Page 1
Table of Contents Index
29817
Operator Manual
40 Foot 3-Section Yield-Pro®
YP4025A-48TR20
Planter
Manufacturing, Inc.
www.greatplainsmfg.com
Read the operator manual entirely. When you see this symbol, the
subsequent instructions and warnings are serious - follow without
exception. Your life and the lives of others depend on it!
Illustrations may show optional equipment not supplied with standard unit or
may depict similar Great Plains implement name models where a topic is
identical.
ORIGINAL INSTRUCTIONS
© Copyright 2019 Printed 2019-03-19 411-198M
Table of Contents Index
EN
Page 2
Machine Identification
Record your machine details in the log below. If you replace this manual, be sure to transfer this information to the new
manual.
If you or the dealer have added options not originally ordered with the machine, or removed options that were
originally ordered, the weights and measurements are no longer accurate for your machine. Update the record by
adding the machine weight and measurements with the option(s) weight and measurements.
Model Number
Serial Number
Machine Height
Machine Length
Machine Width
Machine Weight
Year of Construction
Delivery Date
First Operation
Accessories
Dealer Contact Information
Name:
Street:
City/State:
Telephone:
Email:
Dealer’s Customer
No.:
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Page 3
YP4025A-48TR20 Cover Index iii
Table of Contents
Important Safety Information.................................................1
Safety Decals ....................................................................6
Introduction...........................................................................14
Models Covered ..............................................................14
Description of Unit ...........................................................14
Intended Usage ........................................................14
Document Family .....................................................14
Using This Manual...........................................................14
Definitions.................................................................14
Owner Assistance............................................................15
Further Assistance...........................................................15
Preparation and Setup .........................................................16
Initial Setup......................................................................16
Post-Delivery/Seasonal Setup.........................................16
Pre-Planting Setup ..........................................................16
Hitching Tractor to Product..............................................17
Hydraulic Hose Hookup............................................17
If Weight Transfer is Installed...................................17
Electrical Hookup.............................................................19
Hitching with 3-Point.................................................19
Hitching with Hydraulic Tongue (Option)..................20
Raising/Lowering Tongue.........................................20
Parking Stands ................................................................21
Tank Cart Hitching....................................................22
Making Fertilizer Connections ..................................22
Heights and Leveling .......................................................23
Set Tongue Height ...................................................23
Marker Setup ...................................................................24
Operating Instructions .........................................................25
Pre-Start Checklist...........................................................25
Fold/Unfold Lock Overview..............................................25
Unfolding the Product ......................................................26
Raising/Lowering Product................................................28
Raising Product........................................................29
Lowering Product .....................................................29
Lift Cylinder Lock-Up ................................................30
Re-Phasing Lift System............................................30
Local Float on Hydraulic Tongue..............................30
Folding the Implement Name ..........................................31
Re-phasing Fold System ..........................................33
Transporting the Product .................................................34
Typical Implement Name Weights............................35
Transport Checklist ..................................................36
Loading Materials ............................................................36
Walkboard and Ladder .............................................36
Auxiliary Hydraulics..................................................38
82 bu. Hopper Operation..........................................39
150 bu. Hopper Operation........................................40
Changing the Bulk Box or Hopper............................41
Refuge Hopper Operation ........................................43
Air System Operation ......................................................44
Air System Overview................................................45
Fan Circuit Operation ...............................................46
Fan General Operating Information .........................47
Recommended Fan Speeds ....................................47
Y-Tubes....................................................................48
Airbox Operation ......................................................48
Weight Transfer Operation (Option)................................49
Monitor Operation............................................................49
Electric Clutch Operation.................................................50
Electric Clutch Lock-Up............................................50
®
Air-Pro
Meter Operation ................................................51
Meter Operation .......................................................51
Fertilizer Systems Overview............................................53
Implement Name Tanks System Diagram ...............54
SML Cart Pump System Diagram ............................57
Fertilizer Systems Operation ...........................................59
Implement Name Fertilizer Tanks (Option) ..............60
Implement Name Pump System Operation..............60
Cart Pump System Operation ..................................60
Trailer Operations............................................................61
SML Cart Operations ...............................................61
Other Cart Operations..............................................61
Field Set-Up Checklists ...................................................62
Caster Locks - Field Operations...............................63
Field Operation................................................................64
Marker Unfolding .............................................................65
Marker Unfold (one side)..........................................65
Row Marker Operation .............................................66
Folding the Markers .................................................66
Unusual Marker Operations .....................................66
Monitor Operation............................................................66
Planting ...........................................................................66
Checking Planting Rate...................................................66
Short-Term Parking .........................................................67
Long-Term Storage .........................................................68
Storage: Fertilizer Option .........................................68
Adjustments..........................................................................69
Setting Material Rates.....................................................70
Planting Rate............................................................70
© Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 All rights Reserved
Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been
taken in the preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed
for damages resulting from the use of the information contained herein. Great Plains Manufacturing, Inc. reserves the right to revise and improve its products
as it sees fit. This publication describes the state of this product at the time of its publication, and may not reflect the product in the future.
Registered Trademarks of Great Plains Manufacturing, Inc. include: Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone,
Nutri-Pro, Seed-Lok, Solid Stand, Terra-Guard, Turbo-Chisel, Turbo-Chopper, Turbo-Max, Turbo-Till, Ultra-Till, Whirlfilter, and Yield-Pro.
Trademarks of Great Plains Manufacturing, Inc. include: AccuShot, Max-Chisel, Row-Pro,
Singulator Plus, Short Disk, Swath Command, Terra-Tine, Ultra-Chisel, and X-Press.
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
2019-03-19 Cover Index 411-198M
Page 4
YP4025A-48TR20 Cover Index iv
Height Switch Adjustment................................................70
Marker Adjustments.........................................................71
Marker Disk Adjustment ...........................................71
Fan and Adjustment ........................................................72
Furrow Check:..........................................................73
Fine-Tuning .............................................................74
Seed Delivery Fan Adjustments ...............................74
Liquid Fertilizer Adjustments ...........................................75
Liquid Fertilizer Strainer ...........................................76
Fertilizer Relief Valve ...............................................76
Fertilizer Nozzle Adjustments...................................77
25 Series Row Unit Adjustments .....................................78
Row Unit Down Pressure .........................................79
Adjusting Down-Force ..............................................79
Unit-Mount Coulter Adjustments ..............................81
Coulter Depth Adjustment ........................................81
Coulter Row Alignment.............................................82
Row-Unit Opener Disc Adjustments.........................83
Setting Planting Depth..............................................83
Opener Disc Contact Region....................................83
Adjusting Disc Contact .............................................83
Side Gauge Wheel Adjustment ................................84
Adjusting Gauge Wheel Scrapers ............................85
Seed Meter Setup and Adjustment ..........................86
Meter Rain Cover .....................................................86
Seed Inlet Shutter Adjustment..................................86
Optimal Seed Pool Slopes .......................................87
Meter Re-Fill.............................................................87
®
Air-Pro
Meter Disk Installation................................88
Removing a Seed Disk.............................................89
Sprocket Indexing (Stagger).....................................89
Row Unit Shut-Off ....................................................90
Seed Firmer Adjustments.........................................92
®
Keeton
Seed Firmer Adjustment ............................92
Seed-Lok® Seed Firmer Lock-Up.............................92
Press Wheel Adjustment ..........................................93
Press Wheel Down Pressure ...................................93
Press Wheel Stagger ...............................................93
Press Wheel Centering ............................................94
Troubleshooting ...................................................................95
Planting Rate Problems...................................................95
Suggested Furrow Check:........................................95
Seed Pool Troubleshooting .............................................96
Seed Pool Recovery.................................................97
Population Troubleshooting Charts .................................98
Maintenance and Lubrication............................................106
Maintenance ..................................................................106
Material Clean-Out ........................................................107
Air Box Material Clean-Out.....................................107
Air System Clean-Out ............................................107
Meter Clean-Out.....................................................108
Funnel Conversion .................................................108
Alternate Meter Clean-Out .....................................109
Seed Tube Clean-Out ............................................109
Air Box Residue Clean-Out ...........................................110
Meter Brush Maintenance .............................................111
Meter Brush Replacement .....................................112
Seed Disk Maintenance .........................................113
Cleaning and Storing Seed Disks ..........................113
Hydraulic Maintenance..................................................114
Hydraulic Drive Maintenance .................................114
Bleeding Hydraulics.......................................................115
Marker Maintenance......................................................117
Marker Cylinder Bleeding.......................................117
Marker Shear Bolt Replacement ............................117
Marker Grease Seal Cap .......................................117
Wing Leveling................................................................118
Chain Maintenance .......................................................121
Meter Drive Chain ..................................................121
Spreaders and Scrapers ...............................................122
Row-Unit Side Wheels ..................................................122
Seed Flap Replacement................................................123
Hopper Strap Maintenance (Option) .............................123
Fertilizer System Maintenance ......................................124
Liquid Fertilizer Strainer .........................................124
Lubrication.....................................................................125
Seed Lubricants ............................................................135
Options................................................................................136
Appendix A - Reference Information ................................150
Specifications and Capacities .......................................150
YP4025A-48TR20 ..................................................150
Torque Values Chart .....................................................151
Tire Information .............................................................151
Hydraulic Diagrams .......................................................152
Chain Routing................................................................159
Seed Hose Routing .......................................................162
Appendix B - Initial Setup..................................................164
Pre-Delivery Items.........................................................164
Initial Setup....................................................................165
Marker Extension ...................................................167
Hopper Level Sensor Installation ...........................168
Radar Calibration ...................................................168
Appendix C - Option Installation.......................................169
122-278S Scraper Installation.......................................169
402-520A Low Speed Kit Installation ............................170
Appendix R - Row-Pro™....................................................171
Row-Pro™ Troubleshooting..........................................178
2019-03-19 Cover Index 411-198M
Page 5
YP4025A-48TR20 Table of Contents Index 1
Important Safety Information
Look for Safety Symbol
The SAFETY ALERT SYMBOL indicates there is a
potential hazard to personal safety involved and extra
safety precaution must be taken. When you see this
symbol, be alert and carefully read the message that
follows it. In addition to design and configuration of
equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence and
proper training of personnel involved in the operation,
transport, maintenance and storage of equipment.
Be Aware of Signal Words
Signal words designate a degree or level of hazard
seriousness.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This signal word is limited to the most extreme situations,
typically for machine components that, for functional
purposes, cannot be guarded.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury, and includes hazards that are exposed when
guards are removed. It may also be used to alert against
unsafe practices.
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
Prepare for Emergencies
Be prepared if a fire starts
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctor, ambulance, hospital
and fire department near phone.
Be Familiar with Safety Decals
Read and understand “Safety Decals” on page 6,
thoroughly.
Read all instructions noted on the decals.
Keep decals clean. Replace damaged, faded and illegible
decals.
2019-03-19 Table of Contents Index 411-198M
Page 6
YP4025A-48TR20 Table of Contents Index Important Safety Information 2
PTO-Specific Hazards
Applies only to optional PTO pump.
Even if you are experienced in PTO operations, review
the “Using PTO Safely” topic on page 2 of the PTO
manual (411-015M). Topics in that manual dealing with
PTO hazards include this PTO alert symbol.
PTO hazards include:
Entanglement:
resulting in abrasions, lacerations, crushing,
dismemberment or death. Loose clothing, cuffs, frays,
laces, coattails, drawstrings, hair or scarves are taken up
by a PTO faster than you can react, and with
overpowering torque.
Flailing machinery:
resulting from an unsecured torque arm, resulting in
serious injury or death.
High pressure fluid sprays:
due to hydraulic hose failure, resulting from PTO shaft
over-speed or damaged hoses.,
Wear Protective Equipment
Wear protective clothing and equipment.
Wear clothing and equipment appropriate for the job.
Avoid loose-fitting clothing.
Because prolonged exposure to loud noise can cause
hearing impairment or hearing loss, wear suitable
hearing protection such as earmuffs or earplugs.
The optional PTO pump requires adjustment of a flow
control valve with a hydraulic fan running. The valve is
located near the fan, and the fan is loud.
Because operating equipment safely requires your full
attention, avoid wearing entertainment headphones while
operating machinery.
Handle Chemicals Properly
Agricultural chemicals can be dangerous. Improper use
can seriously injure persons, animals, plants, soil and
property.
Read and follow chemical manufacturer’s instructions.
Wear protective clothing.
Handle all chemicals with care.
Avoid inhaling smoke from any type of chemical fire.
Store or dispose of unused chemicals as specified by
chemical manufacturer.
2019-03-19 Table of Contents Index 411-198M
Page 7
YP4025A-48TR20 Table of Contents Index Important Safety Information 3
Use A Safety Chain
(Optional hydraulic hitch only. 3-Point has no chain.)
Use a safety chain to help control drawn machinery
should it separate from tractor draw-bar.
Use a chain with a strength rating equal to or greater than
the gross weight of towed machinery.
Attach chain to tractor draw-bar support or other
specified anchor location. Allow only enough slack in
chain to permit turning.
Replace chain if any links or end fittings are broken,
stretched or damaged.
Do not use safety chain for towing.
Avoid High Pressure Fluids
Escaping fluid under pressure can penetrate the skin,
causing serious injury.
Avoid the hazard by relieving pressure before
disconnecting hydraulic lines.
Use a piece of paper or cardboard, NOT BODY PARTS, to
check for suspected leaks.
Wear protective gloves and safety glasses or goggles when
working with hydraulic systems.
If an accident occurs, seek immediate medical assistance
from a physician familiar with this type of injury.
Tire Safety
Tire changing can be dangerous and should be
performed by trained personnel using correct tools and
equipment.
When inflating tires, use a clip-on chuck and extension
hose long enough for you to stand to one side–not in front
of or over tire assembly. Use a safety cage if available.
When removing and installing wheels, use wheel-handling
equipment adequate for weight involved.
Use Safety Lights and Devices
Slow-moving tractors and towed implements can create
a hazard when driven on public roads. They are difficult
to see, especially at night.
Use flashing warning lights and turn signals whenever
driving on public roads.
Use lights and devices provided with implement
Keep Riders Off Machinery
Riders obstruct the operator’s view. Riders could be
struck by foreign objects or thrown from the machine.
Never allow children to operate equipment.
Keep all bystanders away from machine during operation.
2019-03-19 Table of Contents Index 411-198M
Page 8
YP4025A-48TR20 Table of Contents Index Important Safety Information 4
22
32
5
Transport Machinery Safely
Maximum transport speed for implement is 20 mph
(32 km/h).
Maximum speed when turning is 13 mph (22 km/h).
Maximum speed when backing is 3 mph (35 km/h).
Some rough terrains require a slower speed. Sudden
braking can cause a towed load to swerve and upset.
Do not exceed 20 mph. Never travel at a speed which does
not allow adequate control of steering and stopping.
Reduce speed if towed load is not equipped with brakes.
Comply with state and local laws.
Do not tow an implement that, when fully loaded, weighs
more than 1.5 times the weight of towing vehicle.
Carry reflectors or flags to mark product in case of
breakdown on the road.
Keep clear of overhead power lines and other
obstructions when transporting. Refer to transport
dimensions under “Specifications and Capacities” on
page 151.
Do not fold or unfold the product while the tractor is
moving
Shutdown and Storage
Lower product, put tractor in park, turn off engine, and
remove the key.
Secure product using blocks and supports provided.
Detach and store product in an area where children
normally do not play.
2019-03-19 Table of Contents Index 411-198M
Page 9
YP4025A-48TR20 Table of Contents Index Important Safety Information 5
Practice Safe Maintenance
Understand procedure before doing work. Use proper
tools and equipment. Refer to this manual for additional
information.
Work in a clean, dry area.
Lower the product, put tractor in park, turn off engine,
and remove key before performing maintenance.
Make sure all moving parts have stopped and all system
pressure is relieved.
Allow product to cool completely.
Disconnect battery ground cable (-) before servicing or
adjusting electrical systems or before welding on
product.
Inspect all parts. Make sure parts are in good condition
and installed properly.
Remove buildup of grease, oil or debris.
Remove all tools and unused parts from product before
operation.
Safety At All Times
Thoroughly read and understand the instructions in this
manual before operation. Read all instructions noted on
the safety decals.
Be familiar with all product functions.
Operate machinery from the driver’s seat only.
Do not leave product unattended with tractor engine
running.
Do not stand between the tractor and product during
hitching.
Keep hands, feet and clothing away from power-driven
parts.
Wear snug-fitting clothing to avoid entanglement with
moving parts.
Watch out for wires, trees, etc., when folding and raising
product. Make sure all persons are clear of working area.
2019-03-19 Table of Contents Index 411-198M
Page 10
YP4025A-48TR20 Table of Contents Index Important Safety Information 6
To install new decals:
1. Clean the area on which the decal is to be placed.
2. Peel backing from decal. Press firmly on surface,
being careful not to cause air bubbles under decal.
29164
29164
Safety Decals
Safety Reflectors and Decals
Your implement comes equipped with all lights, safety
reflectors and decals in place. They were designed to
help you safely operate your implement.
Read and follow decal directions.
Keep lights in operating condition.
Keep all safety decals clean and legible.
Replace all damaged or missing decals. Order new decals
from your Great Plains dealer. Refer to this section for
proper decal placement.
When ordering new parts or components, also request
corresponding safety decals.
Slow Moving Vehicle Reflector
818-055C
On the back of the walkboard platform;
1 total
Red Reflectors
838-266C
On rear face of axle (below Daytime reflectors);
two total
2019-03-19 Table of Contents Index 411-198M
Page 11
YP4025A-48TR20 Table of Contents Index Important Safety Information 7
29164
29164
Daytime Reflectors
838-267C
On rear face of axle (above Red reflectors);
two total
Amber Reflectors
838-265C
On the front of the center section front lower tool bars,
on the rear of the wing tool bars, and
on the sides of the seed box frame;
six total.
2019-03-19 Table of Contents Index 411-198M
Page 12
YP4025A-48TR20 Table of Contents Index Important Safety Information 8
29164
29164
29164
Danger (in Spanish)
818-557C
Advising non-English readers to seek translation
On side of tongue; one total
Danger: Crushing Hazard
818-590C
Top center of 3-point hitch; one total
(not present with hydraulic tongue option)
Danger: Electrocution Hazard
838-599C
One each side of marker upright arm, each side;
four total
2019-03-19 Table of Contents Index 411-198M
Page 13
YP4025A-48TR20 Table of Contents Index Important Safety Information 9
858-0
3
0C
Al
l
driveline gu
a
rds, tractor
and equi
p
m
e
nt sh
ield
s in
pl
a
c
e
PT
O
p
ump assembly securely
a
tt
a
c
hed with
torq
ue
a
r
m
and
c
l
amp
bo
l
t
s
prop
erly to
rq
u
ed
ROTATING DRIVELINE -
CON
TACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT-
DANGER
8
5
8
-0
2
9C
CAPACITY = 13.5 U.S. GALS
U
S
E ANY H
I
GH
Q
U
A
LIT
Y
M
INER
A
L BASE
D
HYD
RA
ULIC
F
L
UI
D
W
I
T
H A VISCOSI
T
Y
R
A
TING
OF
10W-30. OIL
MUST BE CLEAN AND FREE
FRO
M
DIRT
OR CONT
A
MINANT PARTIC
L
ES TO
PREVENT
DAMAG
E
TO PUMP
AN
D M
O
TOR
.
REPLACE FILT
E
R
ELEM
E
NT AFTER EVERY
1
5
0
OP
E
R
A
T
I
NG
HO
U
RS
OR
2
Y
EA
R
S SE
RVICE.
LE
V
EL TOOLBAR BEFORE CHEKING OIL L
E
VEL
OIL FILL LINE
8
5
8-
00
4C
Read
O
w
n
er’s M
anual BEFORE operating
m
a
c
hine.
Keep tr
a
ctor a
t ID
L
I
NG
S
PE
E
D
a
nd
slo
w
l
y
engage
PT
O
t
o pr
e
v
e
nt damag
e
to Hydraul
i
c
Motor
Keep Ra
d
ia
t
or clea
n and f
r
ee of foreign m
a
tter to
prevent
o
ver
hea
ting.
D
o NOT operate with h
y
draul
i
c oil at or
a
b
o
ve 1
80
°
F.
HOT FLUID HAZARD
WARNING
818-240C Rev. A
To avoid Injury or
Machine Damage:
·Operate only with
1000 rpm PTO
CAUTION
34843
858-030C
All driveline guards, tractor
and equipment shields in place
PTO pump assembly securely
attached with torque arm and clamp
bolts properly torqued
ROTATING DRIVELINE -
CONTACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT-
DANGER
29164
29164
818-188C Rev. C
Do Not exceed 20 mph maximum transport
speed. Loss of vehicle control and/or machine
can result.
To Prevent Serious Injury or Death:
EXCESSIVE SPEED HAZARD
WARNING
Danger: Rotating Driveline (Option)
858-030C
On front face of hydraulic reservoir;
one total
Warning: Pinch/Crush
818-045C
On front faces of rockshaft, above gauge wheels,
On inside and outside face, wing caster weldments,
On side face of rear axle weldment;
eight total
Warning: Speed
818-188C
On front of center section, one total
2019-03-19 Table of Contents Index 411-198M
Page 14
YP4025A-48TR20 Table of Contents Index Important Safety Information 10
29164
29164
29164
Warning: Pinch/Shear Hazard
818-579C
Front and rear faces of inner marker arms;
four total
Warning: Overhead Marker
818-580C
Front and rear faces of inner marker arms;
four total
Warning: High Pressure Fluid
838-094C
On side of tongue at hitch;
one total
2019-03-19 Table of Contents Index 411-198M
Page 15
YP4025A-48TR20 Table of Contents Index Important Safety Information 11
858-0
3
0C
Al
l
driveline gu
a
rds, tractor
and equi
p
m
e
nt sh
ield
s in
pl
a
c
e
PT
O
p
ump assembly securely
a
tt
a
c
hed with
torq
ue
a
r
m
and
c
l
amp
bo
l
t
s
prop
erly to
rq
u
ed
ROTATING DRIVELINE -
CON
TACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT-
DANGER
8
5
8
-0
2
9C
CAPACITY = 13.5 U.S. GALS
U
S
E ANY H
I
GH
Q
U
A
LIT
Y
M
INER
A
L BASE
D
HYD
RA
ULIC
F
L
UI
D
W
I
T
H A VISCOSI
T
Y
R
A
TING
OF
10W-30. OIL
MUST BE CLEAN AND FREE
FRO
M
DIRT
OR CONT
A
MINANT PARTIC
L
ES TO
PREVENT
DAMAG
E
TO PUMP
AN
D M
O
TOR
.
REPLACE FILT
E
R
ELEM
E
NT AFTER EVERY
1
5
0
OP
E
R
A
T
I
NG
HO
U
RS
OR
2
Y
EA
R
S SE
RVICE.
LE
V
EL TOOLBAR BEFORE CHEKING OIL L
E
VEL
OIL FILL LINE
8
5
8-
00
4C
Read
O
w
n
er’s M
anual BEFORE operating
m
a
c
hine.
Keep tr
a
ctor a
t ID
L
I
NG
S
PE
E
D
a
nd
slo
w
l
y
engage
PT
O
t
o pr
e
v
e
nt damag
e
to Hydraul
i
c
Motor
Keep Ra
d
ia
t
or clea
n and f
r
ee of foreign m
a
tter to
prevent
o
ver
hea
ting.
D
o NOT operate with h
y
draul
i
c oil at or
a
b
o
ve 1
80
°
F.
HOT FLUID HAZARD
WARNING
818-240C Rev. A
To avoid Injury or
Machine Damage:
·Operate only with
1000 rpm PTO
CAUTION
34843
858-004C
Read Owner’s Manual BEFORE operating machine.
Keep tractor at IDLING SPEED and slowly engage PTO
to prevent damage to Hydraulic Motor
Keep Radiator clean and free of foreign matter to
prevent overheating.
Do NOT operate with hydraulic oil at or above 180°F.
HOT FLUID HAZARD
WARNING
85
8-
0
3
0
C
All driveline guards, tractor
and equipment shields in place
PTO pump assembly securely
a
ttach
e
d
w
it
h
torq
u
e
arm
and
c
l
am
p
bo
lt
s
pr
op
e
rly
t
orqu
e
d
ROTATING DRIVELINE -
CONTACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT-
DANGER
8
5
8-
0
29
C
CAPACITY = 13.5 U.S. GALS
USE ANY HIGH QUALITY MINER
A
L
B
A
SE
D
HYDRAULIC FLUID WITH A VISCOSITY RATING
OF 10W-30. OIL MUST BE CLEAN AND FREE
FROM DIRT
OR CONTAMINANT P
ARTIC
LES TO
PREVENT DAMAGE TO PUMP AND MOTOR.
REPLACE FILT
ER
E
L
EM
E
NT AFTE
R
EVERY
150 OPERATI
NG HO
URS OR 2 YEARS SERVICE.
LEVEL TOOLB
A
R BEFORE CHEKING OIL LEVEL
OIL FILL LINE
85
8
00
4C
Read Owner’s Manual BEFORE
operating machine.
Keep tractor at IDLING SPEED and slowly en
gage PTO
to prevent damage to Hydraulic Motor
Keep Radiator
c
lean
a
n
d fre
e
of foreign
matter to
prevent
overheating.
Do NOT operate with hydraulic oil at or above 180°F.
HOT FLUID HAZARD
WARNING
818-24
0C
R
ev.
A
To avoid Injury or
Machine Damage:
·Operate only with
1000 rpm PTO
CAUTION
34843
818-240C Rev. A
To avoid Injury or
Machine Damage:
·Operate only with
1000 rpm PTO
CAUTION
29164
Warning: Hot Fluid (Option)
858-004C
On front face of hydraulic reservoir;
one total
Caution: 1000 rpm PTO (Option)
818-240C
On front face of hydraulic reservoir;
one total
Caution: Transport Locks
818-351C
Hitch tongue; one total
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Page 16
YP4025A-48TR20 Table of Contents Index Important Safety Information 12
29164
29164
Caution: Tires Not A Step
818-398C
One front face each wing gauge wheel,
One each side front center axle,
One each rear face of rear caster arms;
8 total
Caution: Read Operator’s Manual
818-587C
On center tool bar; one total
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Page 17
YP4025A-48TR20 Table of Contents Index Important Safety Information 13
29164
Caution: Pressure and Torque
838-426C
On outside rim each transport tire;
10 total
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YP4025A-48TR20 Table of Contents Index 14
Figure 1
YP4025A-48TR20 Product
29817
L
R
U
D
F
B
L
R
U
D
F
B
L
R
Introduction
Great Plains welcomes you to its growing family of new
product owners. The 40 Foot 3-Section Yield-Pro®
Planter (YP4025A-48TR20 implement name) has been
designed with care and built by skilled workers using
quality materials. Proper setup, maintenance, and safe
operating practices will help you get years of satisfactory
use from the machine.
Models Covered
YP4025A-48TR20 48-Twin Row, 20 inch (51 cm)
Description of Unit
The YP4025A-48TR20 Product is a pull-type implement
with optional mounted or pull-behind fertilizer capability.
The YP4025A-48TR20 includes 25 Series openers with
Air-Pro
The product accepts optional unit mounted and
frame-mounted row accessories. The product folds for
transport.
Intended Usage
Use the YP4025A-48TR20 Product to seed
production-agriculture crops only. It is suitable for
conventional till, min-till and moderate no-till conditions.
Do not modify the product for use with attachments other
than Great Plains options and accessories specified for
use with the YP4025A-48TR20.
Document Family
ManualM # Operator Manual (this document)
ManualB # Seed and Fertilizer Rate Charts
ManualP # Parts Manual
11001-1662 Planter/Drill Control, User Level 1
11001-1501A Planter/Drill Control, User Level 2&3
110011651 Quick Start Guide YP4025A-48TR20
11001-1126
Other row spacings of model Product # are covered by
separate Operator and Material Rate manuals
(401-627M and 401-627B).
®
meters supporting a wide choice of seed disks.
DICKEY-john
DICKEY-john
®
IntelliAg® manuals:
®
hopper level sensor install
Using This Manual
This manual will familiarize you with safety, assembly,
operation, adjustments, troubleshooting, and
maintenance. Read this manual and follow the
recommendations to help ensure safe and efficient
operation.
The information in this manual is current at printing.
Some parts may change to assure top performance.
Definitions
The following terms are used throughout this manual.
A crucial point of information related to the preceding topic.
Read and follow the directions to remain safe, avoid serious
damage to equipment and ensure desired field results.
Useful information related to the preceding topic.
Right-hand and left-hand as used in
this manual are determined by facing
the direction the machine will travel
while in use unless otherwise stated.
An orientation rose in some line art
illustrations shows the directions of:
Up, Back, Left, Down, Front, Right.
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YP4025A-48TR20 Table of Contents Index Introduction 15
Figure 2
Serial Number Plate
31467
Owner Assistance
If you need customer service or repair parts, contact a
Great Plains dealer. They have trained personnel, repair
parts and equipment specially designed for Great Plains
products.
Refer to Figure 2
Your machine’s parts were specially designed and
should only be replaced with Great Plains parts. Always
use the serial and model number when ordering parts
from your Great Plains dealer. The serial-number plate is
located on the left end of the rear mainframe tool bar,
near the highway lights.
Record your implement name model and serial number
here for quick reference:
Model Number: YP4025A-48TR20
Serial Number: __________________________
Further Assistance
Great Plains Manufacturing, Inc. and your Great Plains
dealer want you to be satisfied with your new product. If
for any reason you do not understand any part of this
manual or are otherwise dissatisfied, please take the
following actions first:
1. Discuss the matter with your dealership service
manager. Make sure they are aware of any problems
so they can assist you.
2. If you are still unsatisfied, seek out the owner or
general manager of the dealership.
If your dealer is unable to resolve the problem or the
issue is parts related, please contact:
Great Plains Service Department
1525 E. North St.
P.O. Box 5060
Salina, KS 67402-5060
Or go to www.greatplainsag.com and follow the contact
information at the bottom of your screen for our service
department.
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YP4025A-48TR20 Table of Contents Index 16
Preparation and Setup
This section helps you prepare your tractor and
YP4025A-48TR20 Product for use, and covers tasks that
need to be done seasonally, or when the tractor/product
configuration changes.
Before using the product in the field, you must hitch it to
a suitable tractor, inspect systems and level the product.
Before using the product for the first time, and
periodically thereafter, certain adjustments and
calibrations are required.
Initial Setup
See “Appendix B - Initial Setup” on page 165 for
pre-delivery items (normally completed by dealer), and
first-time/infrequent setup tasks, including:
• Install seed monitor console in tractor (page 166).
Post-Delivery/Seasonal Setup
On initial delivery, use with a new tractor, and seasonally,
check and as necessary, complete these items before
continuing to the routine setup items:
• Bleed hydraulic system (page 115).
• Wing leveling and alignment (page 118).
• Radar calibration (page 169).
• De-grease exposed cylinder rods if so protected at
last storage.
Pre-Planting Setup
Complete this checklist before routine setup:
Read and understand “Important Safety
Information” on page 1.
Check that all working parts are moving freely, bolts
are tight, and cotter pins are spread.
Check that all zerks are in place and lubricated. See
“Lubrication” on page 125.
Check that all safety decals and reflectors are
correctly located and legible. Replace if damaged.
See “Safety Decals” on page 6.
Inflate tires to pressure recommended and tighten
wheel bolts as specified. See “Tire Information” on
page 152.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 17
Figure 3
Weight Transfer System
36421
Hitching Tractor to Product
Crushing Hazard:
Do not stand or place any body part between implement name
and moving tractor. You may be severely injured or killed by
being crushed between the tractor and implement name. Stop
tractor engine and set parking brake before attaching cables
and hoses.
Hydraulic Hose Hookup
High Pressure Fluid Hazard:
Relieve pressure before disconnecting hydraulic lines. Use
paper or cardboard, NOT BODY PARTS, to check for leaks.
Wear protective gloves and safety glasses or goggles when
working with hydraulic systems. Escaping fluid under pressure
can have sufficient pressure to penetrate the skin causing
serious injury. If an accident occurs, seek immediate medical
assistance from a physician familiar with this type of injury.
Only trained personnel should work on system hydraulics
Great Plains hydraulic hoses are color coded handle
grips to help you hookup hoses to your tractor outlets.
Hoses that go to the same remote valve are marked with
the same color.
If Weight Transfer is Installed
If the optional weight transfer system is not installed, or a
PTO pump is installed, continue at “Color Coded Hose
Handles” on page 18.
The weight transfer cylinders must be free to flex during
all implement name movements where the system is not
in active use.
To allow cylinder flex:
NOTICE
DO NOT MOVE PLANTER FOLDED
OR UNFOLDED WITHOUT CONNECTING
FAN CASE DRAIN AND LOW PRESSURE
RETURN TO THE TRACTOR OR
INSTALLING WEIGHT TRANSFER
SHIPPING LINKS. FAILURE TO DO
SO CAN RESULT IN DAMAGE TO
WEIGHT TRANSFER CIRCUIT.
858-295C
• connect at least the fan case drain and fan return
lines to suitable receptacles (see page 18), or
• install the shipping links (see page 166).
Machine Damage Risk:
Do not move the implement name with a hydraulically locked
weight transfer system. Relieve the system or install shipping
links. If the cylinders are not free to flex, oil loss will result
from even minor movement flexing.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 18
Figure 4
Color Coded Hose Handles
31733
Machine Damage Risk:
Case Drain Hose must be attached first,
prior to inlet and return hoses being connected.
Case Drain Hose must be detached last,
to prevent damage to the fan motor.
Machine Damage Risk:
DO NOT connect the case drain line to a power-beyond-port.
Color Coded Hose Handles
If a PTO pump is installed, hitch hoses are not present
for the fan and hydraulic drive functions.
Color Hydraulic Function
Gray Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Black Fan
Yellow
Hydraulic Drive (standard)
Weight Transfer (option)
Hydraulic Fertilizer Pump (option)
Refer to Figure 4
To distinguish hoses on the same hydraulic circuit, refer
to the symbol molded into the handle grip. Hoses with an
extended-cylinder symbol feed cylinder base ends.
Hoses with a retracted-cylinder symbol feed cylinder rod
ends.
For hydraulic fan and drive motors, connect the hose
under the retracted cylinder symbol to the pressure side
of the motor. Connect the hose under the extended
cylinder symbol to the return side of the motor.
The fan motor further requires hookup of a third line,
which returns hydraulic fluid from the fan motor case.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
1. Attach case drain hose to low pressure drain
connection.
Case drain hose has the smaller
and small, flat-face, connector.
2. Connect low pressure motor return hose to low
pressure return connector. It is distinguished by a
large (1.06 inch/2.7 cm diameter) quick coupler.
3. Connect hydraulic hoses to tractor remotes.
If optional weight transfer is installed, the fan return
and case drain lines are also used by the weight
transfer system.
1
/4inch I.D. hose
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 19
Figure 5
Connector Identification
25236
25237
34694
1
2
3
Figure 6
3-Point Hitch
29242
Electrical Hookup
Refer to Figure 5
Make sure tractor is shut down with accessory power off
before making connections.
1. Mate lighting connector to tractor outlet.
2. Mate monitor connector to tractor harness.
3. Swath Command™ compressor (option).
4. Mate any optional or aftermarket electrical
connectors.
Make connections prior to product movement. Some
product hydraulic circuits are under monitor control.
Hitching with 3-Point
Refer to Figure 6
1. Connect your tractor 3-point to the product 3-point
hitch. If using quick hitch be sure product locks into
hitch securely.
2. Raise tractor 3-point enough to relieve pressure from
parking stands.
Load Sway Hazard:
Adjust 3-point hitch arms and sway blocks to minimize any
side-to-side sway to assure proper tracking in the field, and
safe road travel.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 20
Figure 7
Hitching with Hydraulic Tongue
(Bypass Valve Closed)
28477
1
OPEN
CLOSED
1
2
2
Figure 8
Clutch Folding Module (Hitch)
26033
1
Hitching with Hydraulic Tongue (Option)
Refer to Figure 7
1. Move the tractor to near hitching position.
2. Connect the hydraulic hoses for the tongue circuit.
This needs to be done before hitching in order to
raise and lower the tongue. See “Hydraulic Hose
Hookup” on page 17. Allow slack for hitch
movements. Close the tongue cylinder bypass valve.
3. Make electrical connections for at least the
implement name control circuit (necessary to control
implement name hydraulic systems). See page 19.
4. Check that hitch local bypass valve is closed.
Refer to Figure 8
5. Set the cab Clutch Folding Module Lift/Hitch
switch to Hitch.
6. Retract the Hitch/Lift circuit to set the tongue height
to clear the draw-bar. Back the tractor into alignment
and pin the draw-bar.
7. Connect safety chain to a suitable anchor point on
the tractor.
8. Extend the Hitch/Lift circuit to raise the hydraulic
tongue just enough to relieve pressure from the
parking stand.
9. Remove and store main tongue parking stand. See
“Store Main Parking Stand” on page 21.
Local Float on Hydraulic Tongue
Refer to Figure 7
Equipment Damage Risk:
The hydraulic tongue must be in Float during implement name
moves.
If it is necessary to move the implement name without
first connecting it to a tractor that has a float-capable
circuit for the hydraulic tongue, open the bypass valve
on the tongue cylinder. This provides local floating
capability at the tongue.
Raising/Lowering Tongue
In addition to hitching, tongue raising and lowering is
required during fold and unfold to engage and disengage
the wing locks.
With the standard 3-point hitch, the product tongue is
raised and lowered by raising and lowering the 3-point.
With the optional hydraulic tongue, the product tongue is
raised by extending the hitch cylinder, and lowered by
retracting the hitch cylinder.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 21
Figure 9
Main Parking Stand Stored
29242
2
1
3
4
5
1
234
Figure 10
Storing 3-Point Stands
26034
7
98
6
6
676878955
Parking Stands
Store Main Parking Stand
Refer to Figure 9
1. Raise the tractor hitch slightly to lift parking stands
off ground.
2. Remove the lower pin and the upper pin
holding the parking stand .
3. Move the stand from under the tongue to an inverted
position in the bracket on the left side on the
tongue. Pin in place.
Storing 3-Point Parking Stands
Refer to Figure 10 (shown without tractor for clarity)
1. For the standard 3-point hitch, store the two forward
stands by either of the following methods:
• Remove the top pin , swing the stand out, up
and vertical around the bottom pin , and re-insert
the top pin , or
• Remove the bottom pin , swing the stand inward,
to a horizontal positional under the hitch, and insert
the removed pin at hole under the stand.
Refer to Figure 9
2. Adjust the top link of a 3-point long enough so the
ball swivel does not bottom out when fully raised.
3. Secure hoses so they do not get caught in ball
swivel . Failure to do so could cause hose to be
crushed requiring hose replacement.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 22
Figure 11
Fertilizer Cart Connections
29269
L
C
R
S
G
S
G
L
CRS
G
L
C
R
G
Tank Cart Hitching
If using a fertilizer cart, consult the cart manual for:
• hitching cart tongue to product
• connecting any pump or manifold control electronics
to product
• connecting fertilizer feed hoses to product
Complete the tractor-product hook-up before making any
tank cart connections.
Material Loss Risk:
Open hose and inlet valves when ready to begin planting.
Close them when not in use. Damage to hoses when not
applying material can result in rapid tank depletion.
Fertilizer Connection Types
Type Description
1-section, product manifold and pump:
Inlet only (bypass is local on SML cart; a
2
user-provisioned cart may use the boom gauge line
connection)
3-section, cart manifold and pump:
3
Left, Center, Right inlets & Gauge line
Making Fertilizer Connections
SML-500 or SML-735 tank cart, YP4025A-48TR20 Product with Type 2 Manifold & Product Pump
Product Inlet
Type 2
User-provisioned supply and pump, YP4025A-48TR20 Product with Type 2 and Type 3 Manifolds, & Product Pump
Product Inlet
Left Type 3 Center Type 3 Right Type 3 Type 2
User-provisioned supply and pump, YP4025A-48TR20 Product with Type 3 Manifold (only)
Product Inlet
Left Type 3 Center Type 3 Right Type 3
Gauge Line
N/C
Gauge Line
Gauge Line
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 23
Figure 12
Initial Tongue Height
25316
Level frame in planting conditions.
Failure to do so may result in implement not
producing desired results.
41.5 inches
(105.4 cm)
Figure 13
Center Level Check
29276
Heights and Leveling
All frame sections must be at the correct height and level
to maintain even planting depth.
Periodic frame-leveling adjustments should not be
necessary. If you are having problems with uneven
depth, check product levelness and follow these
procedures.
1. Before making any adjustments be sure the lift
cylinders are re-phased and operating properly. If
not, see “Re-Phasing Lift System” on page 30
2. Complete “Bleeding Hydraulics” on page 115.
3. Unfold the product fully (page 26).
Set Tongue Height
Product must be unfolded for this procedure.
Refer to Figure 12
Set the initial tongue height, using 3-point or hydraulic
tongue cylinder. Distance is measured at top of tongue to
ground level.
• For standard 3-point hitch:
Set depth stop to capture this working height.
If desired height cannot be attained with normal
range of hitch, swivel coupler weldment may be
relocated in tongue bolt holes.
Tractor 3-point control must be in Depth Control
mode, and not Draft Control mode.
• For hydraulic tongue:
Note the scale reading on the tongue for this height.
[Re]set the tongue height to this value when
planting.
Checking Product Height
The product is designed to operate with all sections of
the main tool bar nominally 26 inches (66 cm) above the
planting surface. The height of the center section is not
routinely adjustable. Set planting depth with row unit
adjustments.
When lowering the product for the first time on the
planting ground:
1. Completely lower the main tool bar. If necessary, first
lift off transport locks, remove and stow locks.
2. Set hitch to planting height.
3. Pull forward a few feet or just over a meter.
Height Mis-adjustment Risk:
Fully lower implement name to field position (with openers
into ground) and set hitch height before making side-to-side
adjustments.
4. Check tool bar height across product. See page 118
for further detail and adjustment.
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YP4025A-48TR20 Table of Contents Index Preparation and Setup 24
Marker Setup
Prior to first use, check and adjust:
• “Dual Marker Speed Adjustment” on page 167.
Prior to first use, and whenever changing row spacings,
set or reset:
• “Marker Extension” on page 168.
Prior to each planting session, check and adjust:
• “Marker Disk Adjustment” on page 71.
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Page 29
YP4025A-48TR20 Table of Contents Index 25
High Pressure Fluid Hazard:
Relieve pressure before disconnecting hydraulic lines. Use a
piece of paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems. Escaping fluid under
pressure can have sufficient pressure to penetrate the skin
causing serious injury. If an accident occurs, seek immediate
medical assistance from a physician familiar with this type of
injury.
Figure 14
Fold/Unfold/Lift Locking Features
29855
2
1
3
5
4
1
2
2
3
3
Operating Instructions
This section covers general operating procedures.
Experience, machine familiarity, and the following
information will lead to efficient operation and good
working habits. Always operate farm machinery with
safety in mind.
Pre-Start Checklist
Perform the following steps before transporting the
YP4025A-48TR20 product to the field.
Carefully read “Important Safety Information” on
page 1.
Install seed disks appropriate for crop. See
“Air-Pro
Lubricate product as indicated under “Lubrication”
on page 125.
Check all tires for proper inflation. See “Tire
Information” on page 152.
Check all bolts, pins, and fasteners. Torque as
shown in “Torque Values Chart” on page 152.
Check product for worn or damaged parts. Repair or
replace parts before going to the field.
Check hydraulic hoses, fittings, and cylinders for
leaks. Repair or replace before going to the field.
®
Meter Disk Installation” on page 88.
Fold/Unfold Lock Overview
The YP4025A-48TR20 implement name includes five
sets of locks for the frame, wings and casters:
1. Wing locks: Hooks on the tongue engage locks on
the wings to prevent unfolding in transport. Tongue
must be raised to engage/release. See page 27.
2. Lift cylinder lock channels: These are
operator-installed on a raised plater, these prevent
lowering in transport or when parked. See page 30.
3. Fold cylinder and Caster swing arm cylinder lock
valves: Switch-controlled solenoid valves prevent
motion of the fold cylinders and caster swing arm
cylinders, in transport and field. See page 153.
4. Tongue lock: This engages automatically at unfold,
and lock the tongue/draw bar geometry for field
operations. See page 27.
5. Caster pivot locks: operator-engaged after unfold,
these prevent caster swiveling in the field, which aids
in tracking across hillsides. See page 32.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 26
Figure 15
Clutch Folding Module
26111
2
1
3
4
5
Figure 16
Caster Unlocked
29306
6
7
1235674
Unfolding the Product
The distance between the tractor and the seed structure
decreases by 12 feet (3.7 m) during unfolding. Product,
tractor, or both will move during this operation.
Crushing, Pinch-Point and Overhead Hazards - To prevent
serious injury or death:
Fold only on hard level ground. Allow ample room.
If it is desired that the tractor not move, make sure tractor
is in Park and/or has parking brakes set, otherwise the
telescoping movement of the product is likely to result in
tractor movement.
Do not allow anyone to be on or near the product during
unfolding.
Stay clear of the wing sweep arcs. The sweep arcs of the
wings have numerous pinch and crush points in the
mechanism. Coulters and row openers are sharp.
Allow no one near implement name. The seed structure
usually moves forward during unfolding.
Do not unfold with implement name lowered, or machine
damage will result.
Unfold only with markers resting in transport cradles.
Unfold only if hydraulics are bled free of air and fully
charged with hydraulic oil.
1. Move to level ground.
Refer to Figure 15
2. On the Clutch Folding Module (CFM), set the
following switches to OFF (down):
MASTER switch in the CLUTCH cluster , and
Fert.Pump .
3. If the folded implement name is lowered, raise
mainframe (See “Raising/Lowering Product” on
page 28).
4. If equipped with hydraulic hitch, the CFM Lift/Hitch
switch must be set to Hitch.
Refer to Figure 28
5. At each wing caster, check that lock control
handles and indicators are in the ROAD
position, allowing the casters to swivel. If they are
not, set handle to ROAD position and fully raise and
lower implement name to release load on lock plates
to allow them to come open.
Refer to Figure 15
6. Set CFM Marker/Fold switch to Fold. LED above
switch blinks continuously.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 27
Figure 17
Unfold: Wings Locked
29243
8
8
8
4
Figure 18
Product Unfolding
29279
9
Figure 19
Tongue Lock Engaged
29334
9
Unfolding, Continued ...
7. Raise tractor 3-point hitch or extend (raise) product
hydraulic tongue until tongue wing locks rise and
disengage.
Machine Damage Risk:
Raise hitch before unfolding. If hitch is not raised, wing locks
will remain in transport hooks. Wings will not unfold, and
machine damage is possible.
8. Set CFM Marker/Fold switch to Fold. LED above
switch blinks continuously.
9. Activate (normally Retract) tractor hydraulic circuit to
unfold wings.
10. Operation is complete when the tongue lock
engages.
Refer to Figure 19
Machine Damage Risk:
Do not operate implement name when unfolded unless tongue
lock is engaged. When unlocked, the pull bar system
experiences excess loads. The openers may be damaged by not
tracking straight forward.
11. When fully unfolded, set Marker/Fold hydraulic
circuit to Neutral.
12. For imminent lowered operations, remove lift
cylinder locks (see “Lift Cylinder Lock-Up” on
page 30).
13. Set hitch height to planting position
(“Raising/Lowering Tongue” on page 20).
Machine Damage Risk:
Unfold and fold slowly. Adjust hydraulic flow to take a
minimum of 60 seconds to unfold or fold. Wings are massive,
and damage can occur if they reach the end of travel at high
speed. At lower speeds you also have time to check for hose
pinching or kinking, as well as react to anything unexpected in
the sweep arc.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 28
1
Figure 20
Clutch Folding Module
26113
Figure 21
Product Raised
29280
Figure 22
Product Lowered
29281
Raising/Lowering Product
Refer to Figure 20
Product raising/lowering relies on the four lift cylinders at
the mainframe and wing end gauge wheels.
The product must be raised for folding and unfolding.
The product will not lower if transport locks are installed.
See “Lift Cylinder Lock-Up” on page 30.
When unfolded, if one or both markers are extended,
they may drag or shove if left extended during raise or
lower operations. To avoid this, fold markers prior to
raise or lower.
Machine Damage Risk (Hydraulic Hitch Only):
Do not lower product while folded without using the special
procedure on page 30 (this is a hydraulic hitch restriction product may be lowered while folded with standard 3-point
hitch).
Machine Damage Risk:
Do not lower while any product folding operations are
underway or partially complete, with either hitch.
Machine Damage Risk:
Always raise the product for any reverse/backing operations.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 29
1
Figure 23
CFM: Raising Product
26113
Pinch/Crush Risk:
Keep all personnel clear of center section and seed cart while
raising tool bar. The wheels move inward.
1
1
Figure 24
CFM: Lowering Product
26113
Crushing Risk:
Keep all personnel clear of center section and seed cart while
raising tool bar. The wheels move outward.
1
Raising Product
Refer to Figure 23
1. If the product has hydraulic hitch, set the Lift/Hitch
switch to Lift.
If the product has the standard 3-point hitch, this
switch has no function. The hydraulic circuit is always
in Lift (Raise/Lower) mode.
2. Move the cab lever to Extend the circuit for Lift/Hitch.
Machine Damage Risk:
On tractors with electronic timer controls for hydraulic
circuits, lift timers must be set to no more than 2 seconds
longer than needed to fully raise product.
Do Not Set for Continuous Mode.
For transport, maintenance or storage, install lift cylinder
locks. See “Lift Cylinder Lock-Up” on page 30.
Lowering Product
Refer to Figure 24
1. If lift cylinder locks are installed, first fully raise the
product, and remove the locks. See “Raising
Product” on page 29 and “Lift Cylinder Lock-Up”
on page 30.
2. If equipped with hydraulic hitch, set the Lift/Hitch
switch to Lift On 3-point hitch, this switch has no
function and the circuit is in Lift mode at all times.
3. Move the cab lever to Retract the circuit for Lift/Hitch.
When fully lowered, return lever to neutral.
Machine Damage Risk (Hydraulic Hitch Only):
Never lower product while fully folded, if it is equipped with
the hydraulic tongue hitch, or machine damage can occur
unless a special procedure is followed (see page 30). A
product with a 3-point hitch may be lowered while folded.
Machine Damage Risk:
Never lower product while partially unfolded (with either
hitch). Wing row units can strike main transport wheels.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 30
Figure 25
Lift Cylinder Locks Installed
29283
1
1
2
2
1
2
Crushing Hazard:
Tongue or product components may drop suddenly when
circuit is floated. Before raising or lowering, set CFM
Lift/Hitch switch to Hitch and set tractor circuit to Float. If
tractor is not available, use bypass valve on hitch.
Stand clear and open it slowly.
Figure 26
Local Float on Hydraulic Tongue
28477
1
Lift Cylinder Lock-Up
When moving the raised product more than a short
distance, or over any public road, or when performing
adjustments or maintenance, do not rely solely on the lift
cylinders to keep the mainframe raised.
Install transport locks.
Refer to Figure 25
1. If product is folded, confirm hitch is in Float.
If product is unfolded, hitch may be in any
configuration.
2. Raise the product mainframe. See
“Raising/Lowering Product” on page 28.
3. Remove the transport locks from their storage
positions . Install the transport locks on the
cylinder rods , securing them with the same pins
used for storage.
4. Lower the lift cylinders onto the locks.
Re-Phasing Lift System
In typical use during a single planting operation, it is
normal for the lift cylinders to get slightly out of phase,
resulting in uneven raising and lowering of the Product #
implement name.
Every 8 to 10 passes, or if lifting is uneven, re-phase the
cylinders with this procedure:
1. Raise the product completely, and hold the hydraulic
lever or switch in Extend for several seconds after
the product reaches full elevation, or until all
cylinders are fully extended.
2. When all cylinders are fully extended, momentarily
reverse (Retract) the control to lower the product
1
/2inch (13 mm).
Local Float on Hydraulic Tongue
A hydraulic hitch product may be raised or lowered while
folded using the local float valve.
1. Float hitch circuit before lowering while folded.
Float hitch circuit before raising while folded.
2. Set CFM Lift/Hitch switch to Lift for raising/lowering.
3. Close bypass valve before switching to Hitch. Hitch
circuit operation has no effect with bypass valve
open.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 31
Figure 27
CFM: Wing Folding
26033
2
1
3
4
123
Folding the Implement Name
Fold the YP4025A-48TR20 product for moves between
fields and over public roads, and for storage. The
distance between the tractor and the seed structure
increases by 12 feet (3.7 m) during folding. Product,
tractor, or both will move during this operation.
Pinch Point and Crushing Hazard.:
To prevent serious injury or death:
Fold only on hard level ground. Allow ample room.
If it is desired that the tractor not move during folding,
make sure tractor is in Park and/or has parking brakes
set, otherwise the telescoping movement of the product is
likely to result in tractor movement.
Do not allow anyone to be on or near the product during
folding.
Stay clear of the wing sweep arcs. The sweep arcs of the
wings have numerous pinch and crush points in the
mechanism. Coulters and row openers are sharp.
Allow no one behind the product. The seed structure
moves backward during folding.
Do not fold with product lowered, or machine damage will
result.
Fold only with markers resting in transport cradles.
Fold only if hydraulics are bled free of air and fully
charged with hydraulic oil.
1. Move to level ground.
Refer to Figure 27
2. On the cab Clutch Folding Module (CFM), set the
following switches to OFF (down):
MASTER switch in the CLUTCH cluster , and
Fert.Pump .
3. Raise product mainframe (see “Raising/Lowering
Product” on page 28). Do not raise (hydraulic) hitch
at this point.
4. Install lift cylinder locks (see “Lift Cylinder Lock-Up”
on page 30).
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YP4025A-48TR20 Table of Contents Index Operating Instructions 32
Figure 28
Caster Unlocked
29306
5
6
8
7
66778
4
Figure 29
Fold Commencing
29282
Figure 30
Wings Locked
29243
5
6
6
5
5
6
Refer to Figure 28
If caster locks are engaged (handle in FIELD
position), they must be released before folding.
Machine Damage Risk:
Caster locks must be disengaged for transport.
5. At each wing caster, move the lock control handle
to the ROAD position.
6. If the indicator end of the lock does not
immediately snap up from FIELD to ROAD, some
pivot tension is holding the pawl end of the lock in
the plate detent . Move the product forward or
back a short distance until both locks unlock.
Refer to Figure 27
7. Set CFM Marker/Fold switch to Fold. LED above
switch blinks continuously.
8. Activate (normally Extend) tractor Marker/Fold
hydraulic circuit to fold wings. Sequence begins with
releasing of tongue latch (Refer to Figure 19 on
page 27). Before folding completes ...
9. Raise product tongue (“Raising/Lowering Tongue”
on page 20). This must be done before folding
completes.
If tongue is not raised prior to folding complete, wing
locks will be above transport hooks and unable to
secure wings to tongue.
If this happens, partially unfold product, raise tongue,
and refold.
Refer to Figure 28
10. When fully folded, lower tongue so that wing locks
engage transport hooks .
11. Set Marker/Fold circuit lever to Neutral.
12. 3-point: lower hitch completely
Hydraulic tongue: Set hitch circuit to Float (not
Neutral).
Transport Hazard:
Wing locks must be engaged for safe transport, and product
tongue must be lowered to keep wings locked.
Hydraulic tongue, if installed, must be in Float.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 33
Re-phasing Fold System
In typical use during a single planting operation, it is
normal for the fold cylinders to get slightly out of phase,
resulting in uneven folding and unfolding of the
YP4025A-48TR20.
Every few planting days, re-phase the cylinders with this
procedure:
1. Raise, unfold and fold the product completely, and
hold the fold hydraulic lever or switch in Extend for
several seconds after the product reaches full
folding, or until all cylinders are fully extended.
2. When all cylinders are fully extended, reverse
(Retract) the control to unfold and return to planting.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 34
29284
Transporting the Product
Loss of Control Hazard (Weight):
Do not tow if product exceeds the load rating of the vehicle.
Ensure that the towing vehicle is adequate. An inadequate tow
vehicle is extremely unsafe, and can result in loss of control,
serious injury and death.
Check Bridge Loads: A loaded product, or a product with cart
in tow, can exceed the load ratings of bridges you must cross.
The product can weigh up to 45,000 pounds (20 400 kg),
depending on configuration and seed load. A tank cart hitched
to the product (“in train”) can add another 12,000 pounds
(5400 kg) empty. The tractor unit MUST be rated for the load.
If the tractor is not rated for at least 45,000 pounds, calculate
or obtain a scale weight of the product and cart.
Loss of Control Hazard (Tank Carts):
A tank cart in train must be EMPTY. A full SML-735 cart
weighs 12,000 pounds (5400kg), and, when hitched to the
product, represents an unsafe highway load regardless of
towing vehicle. A loaded nurse cart must be transported
separately.
Loss of Control Hazard (Unfold):
The CFM switch must be set to Hitch, and the hydraulic circuit
must be in FLOAT during transport. Failure to do this may
result in hydraulic system damage, transport hooks
unlatching, a serious highway accident and major
product/tractor damage.
Braking and Loss of Control Hazard:
Do not exceed 20 mph (32 km/h) when driving straight.
Loss of Control Hazard:
Do not exceed 13 mph (22 km/h) in turns. The implement name
is extremely heavy, and can cause “over-steer” with most
tractors. The leading gauge wheels, rear-most transport
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YP4025A-48TR20 Table of Contents Index Operating Instructions 35
Base Model, Empty 34,000 lbs 15 400 kg
Base Model + Material Load 43,000 lbs 19 500 kg
Add for SML-735, Empty 3000 lbs 1300 kg
Planter with Cart
Planter and Cart Empty 36,900 lbs 16 800 kg
Planter and Cart, Full* 54,800 lbs 24 800 kg
Configuration: Markers, UnitMounted Coulters and Hopper
YP4025A-48TR20
150bu Hopper
* Figures included only to emphasize the hazard.
Never tow a loaded tank cart hitched to a planter.
wheels, and tank cart lead wheel fully caster, and provide no
resistance to side sway by the implement name or cart.
Reduction of Control Risk:
Seed may be loaded prior to travel, but increases stopping
distance, increases the need for caution in turns and braking,
and increases tire wear.
Never exceed 3 mph (5 km/h) in reverse.
Never back up with the implement name lowered or with a
pull-type fertilizer tank hitched to the implement name.
If towing other than with a suitable tractor, and the weight
transfer option is present, install shipping links (page 166).
Typical Implement Name Weights
The figures in the table at right represent a limited
number of configurations. The weight of your product
can vary by thousands of pounds, even if it is the
same base model, due to installed options and/or
aftermarket equipment.
If your tractor weight or capability is near its limits,
take your empty product to a scale and get a precise
weight.
Steering
Never exceed 13 mph (22 km/h) in turns. The implement
name is extremely heavy, and can cause “over-steer”
with most tractors. The leading gauge wheels, rear-most
transport wheels, and tank cart lead wheel fully caster,
and provide no resistance to side sway by the product or
cart.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 36
Figure 31
Walkboard Lower Ladder
29321
2
1
1
2
Transport Checklist
Plan the route. If towing a cart hitched to the product,
plan the route so that no reverse movements will be
necessary. Avoid steep hills. Keep Clearances in
mind. Folded, your implement name may be nearly
15 feet (4.6 m) wide and 13 feet (4 m) high.
Hitch.
Make both electrical and hydraulic connections. See
“Hitching Tractor to Product” on page 17.
If markers are unfolded, fold them.
See “Folding the Markers” on page 66.
Raise product.
See “Raising/Lowering Product” on page 28
Install lock-up channels on lift cylinders.
See “Lift Cylinder Lock-Up” on page 30.
Disengage caster locks. See page 32.
Fold and latch lower ladder section. See page 36.
If product wings are unfolded, fold them.
See “Folding the Implement Name” on page 31.
Make sure wing locks are engaged.
3-point hitch:
Lower hitch fully to ensure wings remain locked.
Hydraulic hitch:
Confirm CFM set to Hitch and hitch circuit in Float.
Always have lights on for highway operation.
Comply with all federal, state and local safety laws
when traveling on public roads.
Travel with caution.
Loading Materials
Walkboard and Ladder
Walkboard pin and pivot operation is covered on
page 41.
Refer to Figure 31
The bottom two steps of the walkboard ladder are a
swing-down section. To release this section, pull the
spring-loaded pin forward and pull the top of the free
end of the ladder back.
To re-stow the steps, merely swing them up and forward.
The spring-load pin automatically engages.
Machine Damage Risk:
Ladder steps must be locked up before lowering product or
machine damage will occur.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 37
Figure 32
Walkboard Tool Location
29322
3
3
Figure 33:
Walkboard Swing-Down Rail
29309
1
1
1
Refer to Figure 31
A tool is pinned to the bottom of the walkboard. it is
easier to remove and replace this tool with the product
lowered.
The wrench end fits the nut weldment of the spring force
cam (page 80).
Refer to Figure 33
As necessary for auger clearance, open walkboard top
railing. At each side, pull cross-pins out and make
1
/4turn. Release pin into shallow detents. Swing railing
toward hopper.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 38
Figure 34
Auxiliary Hydraulic Ports
29269
1
12354
Figure 35
CFM: Auxiliary Operations
26122
2
Figure 36
Auxiliary Hydraulic Valve
26048
3
5
4
3
5
Auxiliary Hydraulics
Refer to Figure 34, Figure 35 and Figure 36 (Figure 34
also depicts an optional pintle hitch for a
user-provisioned cart)
The YP4025A-48TR20 product includes, as standard
equipment, an auxiliary hydraulic circuit, intended to
power a seed auger for loading bulk hoppers.
The Aux quick-disconnect ports are on the frame. This
circuit is shared with the markers (if installed).
If markers are not installed, the Aux/Marker circuit is
always in Aux mode.
Operating Auxiliary Hydraulics
The product needs to be unfolded for convenient access
to the manual hydraulic valve.
1. Fold any extended markers and set the tractor lever
for the marker/aux circuit to Neutral.
2. If no markers were unfolded, set the Clutch Folding
Module Marker/Fold switch to “Marker”.
3. If the machine has markers, at the left wing tool bar,
move the lever on the manual valve from
Marker (lever pointing forward) to Aux (lever
pointing back).
4. Connect the implement requiring hydraulic power.
5. Briefly Extend the tractor lever for the Marker circuit,
engage local valve/switch on implement, and confirm
proper implement operation (auger rotation in the
correct direction).
6. Set tractor circuit lever to Extend, and operate
implement with local controls.
7. When operation is complete, set tractor circuit to
Float or Neutral.
8. Set wing valve back to Marker .
Unexpected Marker Movement:
Do not move Marker/Aux valve unless tractor circuit is in
Float, Neutral, or shut down. If circuit is pressurized, markers
begin moving immediately when valve is set to Marker.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 39
Seed Lubricant Required:
Seed lubricant is required for all seeds. Use only Ezee Glide
Plus or Bayer Seed Fluency Agent, depending on local
requirements. see “Seed Lubricants” on page 135 for
crop-specific advice.
System Plugging Risk:
Do not use liquid seed treatments.
Figure 37
82 bu. Hopper Capacities (bu.)
22958
Approximate capacity of 82 bu. bulk seed
hopper, in bushels, at 10 inch increments.
82 bu. Hopper Operation
Tipping Hazard:
Load an 82 bu. hopper only when mounted on the cart. A full
hopper can weigh over 5500 pounds (2500 kg), which is above
the lifting and balance capability of most tractors and farm
forklifts.
Fork lift height capability required is:
Product lowered: 4 feet 2
Product raised: 6 feet 5
The hopper includes a level sensor which is not
factory-installed. If you desire to use the sensor,
install it prior to first use of the hopper. See page 169.
Adding Seed to 82 bu. Hopper
1. When using new meters for the first time, or at the
start of each season, measure out approximately
4 gallons (15 liters) of seed into a pail. Add
(120 ml) of lubricant to the pail. Mix and pour into air
box before mounting the bulk box or hopper.
2. Put tractor in Park.
3. Turn off seed box fan.
4. If the 82 bu. hopper is not yet on the product,
dismount any seed container present, and mount the
empty 82 bu. hopper. See “Changing the Bulk Box
or Hopper” on page 41.
5. Open slide gate at base of hopper. Open lid.
6. Measure the lubricant required, and if loading seed
by bag, determine the amount of lubricant per bag.
5
/8inches (129 cm)
7
/8inches (198 cm)
1
/2cup
If loading with a hydraulic auger, see “Auxiliary
Hydraulics” on page 38. Lower walkboard railing as
necessary.
Entanglement, Chemical and Falling Hazards:
Observe all safety precautions for material handling and use
of loading equipment (particularly augers).
Auger height capability required is:
bulk box, product lowered:
8feet 9
bulk box, product raised:
11 feet
82 bu. hopper, product lowered:
9feet
82 bu. hopper, product raised:
11 feet 3
1
/2inches (2.68 m)
3
/4inches (3.37 m)
1
/4inches (2.75 m)
1
/2inches (3.44 m)
7. Add seed, mixing in lubricant continuously or per bag.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 40
Entanglement, Chemical and Falling Hazards:
Observe all safety precautions for material handling and use
of loading equipment (particularly augers).
Seed Lubricant Required:
Seed lubricant is required for all seeds. Use only Ezee Glide
Plus or Bayer Seed Fluency Agent, depending on local
requirements. See “Seed Lubricants” on page 135 for
crop-specific advice.
System Plugging Risk:
Do not use liquid seed treatments.
Figure 38
150 bu. Hopper Capacities (bu.)
22959
Approximate capacity of 150 bu. bulk seed
hopper, in bushels, at 10 inch increments.
150 bu. Hopper Operation
Tipping Hazard:
Load a 150 bu. hopper only when mounted on the cart. A full
hopper can weigh over 10,000 pounds (4500 kg), which is
above the lifting and balance capability of most tractors and
farm forklifts.
The 150 bu. hopper is incompatible with the optional
cart-mounted liquid fertilizer system. The sides of the
hopper extend into the space occupied by the tank
system.
Fork lift height capability required is:
Product lowered: 4 feet 2
Product raised: 6 feet 5
The hopper includes a level sensor which is not
factory-installed. If you desire to use the sensor,
install it prior to first use of the hopper. See page 169.
Adding Seed to 150 bu. Hopper
1. When using new meters for the first time, or at the
start of each season, measure out approximately
8 gallons (30 liters) of seed into a pail. Add 1 cup
(240 ml) of lubricant to the pail. Mix and pour into air
box before mounting hopper.
2. Put tractor in Park.
3. Turn off seed box fan.
4. If the 150 bu. hopper is not yet on the product,
dismount any seed container present, and mount the
empty 150 bu. hopper. See “Changing the Bulk
Box or Hopper” on page 41.
5. Open slide gates at base of hoppers. Open lids.
6. Measure the lubricant required, and if loading seed
by bag, determine the amount of lubricant per bag.
5
/8inches (129 cm)
7
/8inches (198 cm)
If loading with a hydraulic auger, see “Auxiliary
Hydraulics” on page 38. Lower walkboard railing as
necessary.
Auger height capability required is:
bulk box, product lowered:
8feet 9
bulk box, product raised:
11 feet
150 bu. hopper, product lowered:
9feet 6
150 bu. hopper, product raised:
11 feet 9
1
/2inch (2.68 m)
3
/4inch (3.37 m)
1
/4inch (2.9 m)
1
/2inch (3.59 m)
7. Add seed, mixing in lubricant continuously or per bag.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 41
Figure 39
Walkboard Pin and Keeper
29312
2
3
Figure 40
Seed Box Lock Pins
29267
1
1
2
3
Figure 41
Removing/Mounting Hopper
26121
1
Changing the Bulk Box or Hopper
The Product # product accepts the Great Plains
82 bu. hopper,150 bu.
that meet the PROBOX
Tipping and Overload Hazard:
Place or remove a hopper only when empty. A full hopper can
weigh between 5000 and 10,000 lbs (2700 and 4500 kg),
which is above the lifting and balance capability of most
tractors and farm forklifts.
1. Move the product to an area of level ground and
sufficient room to maneuver a tractor or fork-loader.
2. Unhitch tank cart if present.
Refer to Figure 39
3. Disconnect hopper level sensor (if installed).
4. Remove the pin securing the left end of the
walkboard to the ladder assembly.
5. Swing the walkboard open, and secure it at full open
with the keeper .
6. Raise the product. This causes the rear transport
wheels to move forward, providing closer access for
the lifter.
7. Back up the product about three feet (1 m). This
causes the rear transport wheels to caster forward,
further reducing the reach required for lifting.
8. Turn off the seed box fan.
9. Put the towing tractor in Park. Shut off engine.
Remove key.
10. Close the slide gate at the base of the hopper or
seed box.
Refer to Figure 40
11. Remove the two pins , at opposite corners, used to
retain the seed box or hopper. Remove these pins
even if no container is presently mounted.
Refer to Figure 41 (depicting identical process on
YP24)
12. Align the lifting forks with the slots in the rear of the
seed box or hopper. Slowly drive forward until the
forks are completely under the container.
13. Slowly lift the seed container above the bracket, and
back away from the product.
14. Lower the container to the ground for exchange with
the next seed container.
a
hopper, or bulk seed boxes
®b
specification.
a. The 150 bu. hopper is incompatible with on-board fertilizer tanks.
b. PROBOX
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®
is a registered trademark of Pioneer Hi-Bred International, Inc.
Page 46
YP4025A-48TR20 Table of Contents Index Operating Instructions 42
Inoperable Configuration Risk:
It is possible to lift the hopper or seed box from any side, but it
will only function properly if the seed gate is to the rear of the
product.
Figure 42
Approaching Hopper
25255
15. If mounting a seed container for the first time in a
season, open the new seed container and measure
out approximately 3 gallons (11 liters) of seed into a
pail. Add
1
/3cup (80 ml) of lubricant. Mix and pour
into air box before mounting the container.
Plugging and Inconsistent Population Risks:
Ezee Glide Plus or Bayer Seed Fluency Agent is mandatory for
all seed, especially treated or inoculated seed. Insufficient
seed lubricant can cause system plugging, skips and doubles.
16. If mounting a seed box, add lubricant to the seed box
at this time. It may be easier to add it while the box is
still at ground level.
Refer to Figure 42
17. Approach the hopper or seed box from the back (the
side with the slide gate).
Tipping Hazard:
Do not let anyone stand under or in front of the elevated seed
box. Make sure your tractor or fork lift is rated for and
configured to lift the weight. A full seed box can weight over
2500 pounds (1134 kg); a full 82 bu. hopper over 5000 pounds
(2270 kg).
18. If mounting a seed hopper, confirm that the hopper is
the correct version for that side. The left hopper has
the lid hinge on the left. The right hopper has the lid
hinge on the right.
19. Slowly lift the full seed box or empty hopper, and
place it in the product air box frame.
20. Install the box retaining pins in frame corners.
21. If the hopper has a level sensor, connect that lead to
the “HOPPER 2” lead of the product harness,
located below the hydraulic drive in the center
section.
22. Close and pin walkboard.
23. It may be necessary to make a one-time adjustment
to the seal on the top of the air box, to obtain full
contact between air box and seed box/hopper.
24. If installing an empty hopper for planting, load seed
(and lubricant).
25. Open the slide gate.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 43
Figure 43
Refuge Hopper (rear view)
34851
1
2
2
1
2
Refuge Hopper Operation
The 10 bushel refuge hopper comes attached and ready
to operate if purchased at the same time as implement
name. If purchased separately see installation
instructions in manual 403-287M.
Refer to Figure 43
1. Fill the refuge hopper with appropriate seed for
seeding desired areas of the field.
2. Close the slide gate at the main hopper .
3. Open refuge hopper left and right slide gates .
One slide gate may be left closed if there is a
preferred reason.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 44
A11
A06
A13
A12
A14
A07
A08
A09
A16
A05
Figure 44
Yield-Pro
®
Air System for Air-Pro® Seed Metering
29595
A01
A02
A03
A04
A05
A05
A10
A15
A01
A07
A13
A02
A08
A14
A03
A09
A15
A04
A10
A16
A05
A11
A06
A12
Air System Operation
Hydraulic Fan Pressure Sensor Lines
Split-Air Manifold Pressure Sensor Chamber Row Pressurizing Tubes
Servo-Controlled Vane Feedback Signal Line Row Unit Seed Tube
WSMT Servo Programming Air Box & Seed Manifold
Priority Meter Pressurization Air Seed Delivery Hose
Excess Air to Air Box Air Release Screen
Meter Pressurization System Elements ( shows air direction)
Air-Pro® Seed Meter
IntelliAg® Console
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YP4025A-48TR20 Table of Contents Index Operating Instructions 45
There are console menus for adjustment of metering air, and
manual fall-back modes.
A01
A02
A03
A04
A05
In the case of insufficient fan air, or significant seed delivery air
leaks, seed flow may be irregular or stop.
A10
Meter Pressurization is displayed by a mechanical gauge, and
by sensors connected to the seed monitor system. As these
sensors measure pressure at similar locations, they generally
agree.
A07
A08
A09
If seed delivery air flow is insufficient, the indication will be low
seed rate alarms. If fan speed and direction are as
recommended, check for air leaks in the seed delivery system.
A10
A11
When the meter inlet is filled, and seed fills the tube above the
inlet, the screen becomes blocked by seed, shutting off air
flow to that meter. As the meter consumes seed, the screen
becomes exposed, air resumes flowing, carrying more seed
from the air box manifold to the meter.
A12
A13
Several rows have pressure sensor ports for the meter
pressurization system. Use of the special blank disk is
particularly important when one of these rows is shut off.
Running a normal disk with no seed causes the air system to
over-compensate.
A14
A15
A16
Air System Overview
The hydraulic fan supplies air for both seed delivery
and meter operation. Fan rpm is operator-adjusted
(page 47) via the tractor’s hydraulic flow control, and
reported by the seed monitor system. The rest of the
system is fully automatic.
At the split air manifold , a rotary actuator
operates a vane, under the control of software in the
WSMT , which regulates the air diverted to the meter
pressurization system .
Air not used for metering (typically just under half of it)
flows to the air box for bulk seed delivery. Air
pressure in the seed delivery system is not presently
reported. The meter pressurization air has priority, and
can take all the air.
Several rows have lines to sample metering air
pressure, which is measured in a sensor chamber .
The sensor reading is fed back to the WSMT for
closed-loop pressure control. No operator adjustment is
required for the metering air system.
At the air box , air is mixed with seed from the bulk
hopper or ProBox, and flows out air box manifold ports
into primary seed hoses to the rows. Y-tubes (not
shown) may split primary hoses into secondary hoses to
rows.
An air release screen above each Air-Pro
meter vents the delivery air. The vent has two
functions:
1. It releases delivery air while retaining the delivered
seeds.
2. It is a passive control gate for bulk seed delivery.
It takes about a minute to initially fill the meters.
Separate pressurization tubes provide the air to the
meters that holds the seed in disk cells until released to
the seed tubes .
A detector in each seed tube reports seed passage to
the seed monitor system, which reports counts and rates
on the console .
®
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Page 50
YP4025A-48TR20 Table of Contents Index Operating Instructions 46
Figure 45
Hydraulics at Fan
29800
1
2
3
4
5
123
If the fan is connected in reverse, it may not run at all (due to
no oil source at the return connection). If oil is present, oil
bypass at the check valve prevents the fan from reaching
operating rpms. A reversed fan is incapable of providing
sufficient air flow for planting.
5
451
Fan Circuit Operation
See also “Fan and Adjustment” on page 72.
Refer to Figure 45
Three hydraulic hoses serve the fan, and must be
properly connected
a
for the fan to operate in the correct
direction , at recommended speeds, and without
damage. See “Hydraulic Hose Hookup” on page 17.
1. Always connect the case drain line first.
This line protects the outer shaft seal of the hydraulic
motor. The case drain is a small line to the hitch,
provisioned with a specialized low-seep flat-face
case drain Quick Disconnect. Pressure spikes during
motor operation, and pressure cycles due to
temperature change are bled off by the case drain.
Motor Seal Damage Hazard:
Do not apply pressure to the case drain line. Do not change
the special QD connector. A restricted or sealed case drain
line will promptly result in motor seal damage.
2. Connect the motor return line second, to sump.
The product includes an 1
1
16inch low
back-pressure QD coupler set. Install the receptacle
on a tractor sump port, and not at a normal remote
return port. The unusual size aids in ensuring correct
connection, so that the motor return line handles
high volume at low back-pressure, ensuring full
motor performance.
3. Connect the motor inlet line to a tractor remote
capable of the flow rates shown at “Recommended
Fan Speeds” on page 47.
4. The fan hydraulic circuit includes a check valve ,
which provides a relief path for oil at motor shutoff.
If fan pressure and return hoses are reversed, the
resulting low fan rpm provides strong indication of
bypass flow through the check valve.
Correct fan direction is shown at . If reversed fan is
suspected, observe it during shutoff, as the direction
of motion is easier to see at lower rpms as it slows to
a stop (initial startup is virtually instantaneous,
making observation at start difficult).
Fan speed is controlled by the tractor circuit (and not the
seed monitor). Fan rpm is reported by the seed monitor.
You may stop the fan by setting the circuit to neutral or
float. The check valve slows the blades to a stop by
locally recirculating the oil.
a. Fan hose connections are made only if no PTO pump is installed. With PTO, the connections are made once when the kit is installed.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 47
Recommended Fan Speeds
Low Population Risk at Turns:
The figures above do not include oil for lift/lower or oil for
marker operation. Aggressive lift/lower operations, and
simultaneous lift/marker operations, can reduce fan rpm below
that needed to pressurize meter disks. If seed falls out of
pockets, low population bands will occur shortly after turns.
Unless the tractor has generous oil flow capacity, raise/fold
markers before lift, and lift slowly. Watch manifold pressure
and tune operations to keep it at planting levels in turns.
Before the first planting each season, or when using new
meters or meter wheels for the first time, or at the start of each
season, before filling with seed, add
1
/3cup (80 ml) seed
lubricant to bottom of airbox.
YP4025A Bulk Box
Initial Fan Speed
2700 rpm 2500 rpm
11.6 gpm 10.7 gpm
44 liters/min 40 liters/min
4.5 gpm 4.5 gpm
17 liters/min 17 liters/min
4.0 gpm 4.0 gpm
15 liters/min 15 liters/min
20.1 gpm 19.2 gpm
76 liters/min 72 liters/min
Fan Speed Range
2300 - 3500 rpm 2300 - 3200 rpm
9.9 - 12.9 gpm 9.9 - 12.4 gpm
37 - 49 lpm 37 - 47 lpm
4.5 gpm 4.5 gpm
17 liters/min 17 liters/min
4.0 gpm 4.0 gpm
15 liters/min 15 liters/min
20.1 - 19.2 gpm 18.4 - 20.9 gpm
76 - 72 lpm 69 - 79 lpm
Seed Hopper¹
Fan Oil
Consumption²
Hydraulic Drive Oil
Consumption²
Hydraulic Pump
Oil Consumption²
Total² Oil, Motors,
Initial Speed
Fan Oil
Consumption²
Hydraulic Drive Oil
Consumption²
Hydraulic Pump
Oil Consumption²
Total² Oil, Motors,
Speed Range
¹ This assumes a 2007+ Great Plains hopper, or older hopper
with the vent line update. For an older unvented hopper, use the
rpms recommended for a bulk box.
² Does not include oil for lift/lower or markers.
Values are typical, and may be higher for high seeding or
Fan General Operating Information
Use tractor remote hydraulic valve flow control to set fan
speed. Always start the fan with a low flow setting.
Monitor fan rpm with the seed monitor.
Gradually bring fan up to the recommended initial rpm.
The split-air servo vane engages only above 50 rpm.
Do not run the fan over 3500 rpm or at speeds under
2000 rpm.
At excessive rpm, too much air flow can cause:
• seed to plug the air box
• seed suspension in a bulk seed box
• oil heating
• slow lift times
If the rpm is too low, the split-air system may divert
nearly all the air to the meter pressurization, leaving
none for seed transport (or just enough to plug low spots
in seed hoses).
The monitor console can report meter pressurization.
There is also a Magnehelic
two readings should not disagree by more than a few
tenths of an inch.
The Seed Rate manual provides initial values for
meter pressurization. Normal readings are in the
0.8 inch to 4.0 inch water pressure range, and vary
considerably with crop.
If at suggested fan rpm, desired pressure cannot be
reached, chances are the fan is running backwards. If
the rpm and meter pressurization readings are correct,
but the meters are starved of seed, the fan may be
running backwards and the meter pressurization system
is taking all the air, leaving little or none for seed delivery.
Reverse the inlet/return lines at the hitch.
If air system does not operate suitably with fan speeds
between 2000 and 3800 rpm, see “Seed Delivery
Troubleshooting” on page 101.
When starting empty you must blow seed out to the
meters for two to four minutes to fill meters.
During “FILL METER”, all air is routed to the air box,
The monitor has a level sensor below the hopper or seed
box to warn when seed box is empty. There are three to
four acres of seed in the system when the sensor first
indicates box empty, depending on seeding rate.
and none to the meter pressurization system.
2019-03-19 Table of Contents Index 411-198M
®
air pressure gauge. These
Page 52
YP4025A-48TR20 Table of Contents Index Operating Instructions 48
Figure 46
Seed Y-Tube
29758
Figure 47
Air Box
29309
1
1
Steps for setting and adjusting the air system are found
at “Fan and Adjustment” on page 72.
Y-Tubes
Refer to Figure 46
Y-tube gates can be shut off to feed only one row for
single-row planting on a twin-row machine. In the
photograph, the left meter tube is open and the right
closed.
You can also shut off the Y-tube gates to clean out the air
system and meters. See “Row Unit Shut-Off” on
page 90.
Airbox Operation
Refer to Figure 47
The function of the airbox is to mix seed with turbulent
air from the hydraulic fan, which then exits through a
manifold (not shown) to the seed tubes which serve the
row unit meters.
Before the first planting each season, or when using
new meters or meter wheels for the first time, or at the
start of each season, before filling with seed, add
1
/3cup (80 ml) seed lubricant to bottom of airbox.
When starting empty you must blow seed out to the
meters for two to four minutes to fill meters.
The monitor has a level sensor below the hopper or seed
box to warn when seed box is empty. There are three to
four acres of seed in the system when the sensor first
indicates box empty, depending on seeding rate.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 49
Figure 48
Weight Transfer Valve and Cylinder
36421
2
1
4
3
5
12345
5
Figure 49
Seed Monitor Console
29801
Weight Transfer Operation (Option)
This option provides a control valve , plumbed into the
hydraulic drive circuit, and a cylinder for each wing.
Up to 1000 pounds (450 kg) of mainframe weight may be
transferred to each wing when oil is being supplied to the
hydraulic drive circuit.
Once set, the circuit usually requires little adjustment in
normal field operations. To set the circuit:
1. Unfold and lower the implement name in field
conditions.
2. Supply oil to the hydraulic drive circuit (or operate
the PTO at field rpm if using a PTO pump that
supplies the hydraulic drive). The hydraulic drive
motor itself does not need to be operated.
3. Loosen the lock disc at the valve block. Adjust the
knob until the gauge reads approximately
1000 psi. Tighten the lock disc.
4. Lower the implement name. Engage the hydraulic
drive (with seeding disabled) Pull forward at normal
field speed for a short distance. Stop.
5. Check that the wings are level.
• If the wings ends are lower than the center,
decrease the pressure at the valve .
• If the wing ends are higher than the center,
increase the pressure.
A relief valve in the valve block prevents any
damage from over-pressure.
See page 17 and page 166 for important information
about movements without a suitable tractor. See
page 136 for ordering information.
Monitor Operation
Monitor operation is described in a separate manual
supplied with your implement name.
Operations covered in that manual (and therefore not in
this manual) include:
• hydraulic drive control
• seed rate calibration
• planting rate
• fertilizer rate
• setting rate limits and detecting out-of-limits
• GPS integration
• fan rpm
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YP4025A-48TR20 Table of Contents Index Operating Instructions 50
Figure 50
CFM: Clutch Switches
26120
1
2
3
4
234
1
Figure 51
Electric Clutch Lockup
29329
5
1
2
234123456
6
Figure 52
Clutch Plate Nearly at Cutout
26168
6
4
3
Electric Clutch Operation
The YP4025A-48TR20 product has three clutches in the
seed meter drive system. A clutch enables or disables
groups of row units. The information in the table below is
normally preset at the factory for your product
configuration.
The switches Left / Center / Right correspond to
the left wing row units, center section row units and right
wing row units respectively.
The Master switch controls all row units, regardless of
drive type. For all switches, “OFF” (down) removes
power from the clutch, disengaging that set of row units.
When any switch (plus Master) is ON, the LED for that
switch illuminates steadily.
Clutch Switch Coverage
Clutch Switch Coverage (Rows)
Left Center Right
48 row 01-14 15-34 35-48
Electric Clutch Lock-Up
In case of electric clutch failure, an electric clutch can be
mechanically engaged.
Refer to Figure 51 and Figure 52
1. Remove the rubber plugs from the oil shield
disc to allow access to the lock-up holes. Plugs
simply push out away from the clutch side.
2. Align the cutouts with the holes .
3. Insert the M8-1.25x14 mm long metric bolts .
If you observe half the hole obstructed by a metal
disc , you are not at a cutout.
If the entire hole is obstructed by a metal disc , you
are not at a cutout.
When at a cutout, the bolt will screw in with minimal
resistance until the bolt head reaches the clutch
face.
4. Reinstall the plugs so they are not lost.
Use only the provided 14 mm length bolts. Longer
bolts will damage the clutch. Shorter bolts may not
effect a lock-up.
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Page 55
YP4025A-48TR20 Table of Contents Index Operating Instructions 51
Figure 53
Air-Pro
®
Seed Meter at Row
29825
3
2
1
5
6
4
7
8
9
123456789
Air-Pro® Meter Operation
Refer to Figure 53
The meter disk is driven, top forward, by a chain drive
(not shown) always connected to the section drive shaft
At non-planting rows, use a blank disk (page 90).
Seed is air-delivered to the inlet above the air release
screen . Seed customarily fills to the top of the screen,
blocking further air flow from the seed delivery system,
until the seed level falls below the screen.
Seed enters the meter at the seed inlet shutter (if
open), and forms a seed pool at the base of the meter.
Seed pool size is controlled by the shutter handle
setting (which is the only user adjustment at the meter).
Initial shutter settings are given in the seed rate charts.
Meter pressurization air enters the meter at , and exits
the meter primarily at the seed pockets in the seed disk.
The pressure differential holds seed in the disk
pockets rising from the seed pool. Excess seed at a
pocket is picked off by the tickler brushes .
The strip and drop brushes block meter pressurization
air. Seeds passing the drop brush are free to fall into
the seed tube, and are detected by the seed sensor .
Meter Operation
1. Install disks for your crop/population range per the
Seed Rate manual and the instructions beginning on
page 88 of this manual.
2. Open the shutter at planting rows to the
recommended initial setting (from the Seed Rate
charts). At unused rows, close Y-tube leg
(page 108), install a blank disk (page 90) and close
shutter.
3. Set sprocket indexing if staggering a twin-row crop
(see Seed Rate manual for details).
4. Operate the fan at normal field rpm (page 47).
5. On the seed monitor, perform a “FILL METER”
operation.
6. With all rows primed, rotate meters one turn to fill
pockets to edge of drop brush.
For hydraulic drive, engage all clutches, and use a
“FILL DISK” seed monitor operation.
For ground drive, either disengage all clutches and
rotate the section drive shafts (top forward) with a
7
/8inch (23 mm) wrench, or raise product, engage
clutches and rotate ground drive tires (top forward).
7. Leave fan running (to keep seed in top pockets).
Re-install rain covers. Commence planting.
Meter operation is automatic from this point on.
2019-03-19 Table of Contents Index 411-198M
For hydraulic drive products, an optional Remote Test
Switch is available from DICKEY-john
at-row control of meter rotation for meter fill and seed
pool recovery operations.
See also:
“Seed Pool Troubleshooting” on page 96,
“Seed Pool Recovery” on page 97,
“Meter Clean-Out” on page 108, and
“Meter Brush Maintenance” on page 111.
®
which allows
Page 56
YP4025A-48TR20 Table of Contents Index Operating Instructions 52
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Page 57
YP4025A-48TR20 Table of Contents Index Operating Instructions 53
Refer to Figure 54 above. The “Fert.Pump” switch
on the Clutch Folding Module is not used with any
presently supported Great Plains tank, pump and
boom systems. It might be used to control a clutch
on a user-provisioned system that has a
solenoid-operated clutch.
Figure 54
CFM: Tank Pump Control
26122
1
1
Fertilizer Systems Overview
The YP4025A-48TR20 supports one or two optional
fertilizer boom systems:
• one or two Type 2 single-section booms, typically
used with on-board tanks, trailing SML tank cart, or a
user-provisioned trailing cart, supplied by an optional
product- or cart-mounted hydraulic pump system;
• a Type 3 three-section boom, typically used with a
user-provisioned trailing cart, supplied by a pump
and manifold on the cart.
Use only pre-mixed liquid fertilizer. Do not use dry
fertilizer added to water in the tank.
Agricultural Chemical Hazards:
Avoid contact with skin or eyes. Wear proper protective
equipment as required by chemical manufacturer. Avoid
prolonged breathing of chemical fumes. Wear respirator as
required by chemical manufacturer. Some chemicals will cause
serious burns, lung damage and death. Seek medical
assistance immediately if accident occurs. Know what to do in
case of an accident.
If the fertilizer product is at any risk of precipitation,
stratification or sedimentation, load it shortly before
application. Although the on-board and SML tanks
include bypass return ports, the flow through these lines
is too low to act as agitation (and may even be shut off).
System Plugging Risk:
Do not allow fertilizer to remain in the tanks for extended
periods or settling of material and system plugging will occur.
The next four pages cover plumbing diagrams and
system component identification for the available
on-board system and the available SML cart system.
Operations are described on page 59.
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Page 58
L47
L48
Figure 55
Hydraulic Pump Fertilizer System
36406
L26
L15
L11
L25
L11
L15
L26
L22
L28
L27
L24
L14
L29
L21
L31
L20
L30
L22
L32
L36
L37
L41
L42
L43
L39
L16
L17
L44
L46
L40
L45
L38
L14
L25
L23
YP4025A-48TR20 Table of Contents Index Operating Instructions 54
Implement Name Tanks System Diagram
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Page 59
YP4025A-48TR20 Table of Contents Index Operating Instructions 55
L10
L11
L14
L15
L16
L17
L17
L20
L21
L27
L22
L23
L24
L25
L26
L27
L28
L27
L29
L30
L31
L32
L36
L37
L38
L39
L40
L41
L42
L43
L43
L44
L45
Implement Name Tank Fertilizer System Elements
Liquid fertilizer system callouts are consistent across
this entire manual. No single system includes all
elements.
Tank Lid (not shown)
Tank lids are vented and may be kept tight. Some lids
have a removable center section for easier hose fill.
Implement Name Tank
On-board tanks are 200 gallons (750 liters) each. A
sight gauge at front shows current fill level against a
scale.
Tank Discharge Shutoff Valve
These valves are normally left open, unless the material
is different on each side.
Tank Clean-Out Plug
These plugs are only removed for unusual
maintenance.
Quick-Fill Inlet and Plug
This 2 inch fitting secures either the plug or the fitting of
an external hose using cam locks. Always close the
valve before removing the plug.
Quick-Fill Shutoff Valve
This valve is opened for filling tanks from a pressurized
supply source. It might also be opened for gravity
off-load. It is closed during all other operations.
Pump
The centrifugal pump is powered by a hydraulic motor
controlled by a proportional valve (not shown). The
valve is controlled by the seed monitor.
Pump Outlet
The pump normally operates at a flow rate higher than
required for the booms. The pump output is split into a
a
flow, and a recirculationa/bleed flow.
boom
Air Bleed Line
This small line provides pump priming and recirculation
of excess material afield.
Pump Drain Plug
Remove this plug to drain or flush the bleed line or
pump.
Pump Recirculation Valve
This valve is normally open. It may be closed for
reduced bypass at very high application rates.
Recirculation Lines to Tank(s)
These lines provide pump priming at startup, and
recirculation of excess material afield.
Tank Recirculation Valve(s)
These valves are normally open. They might be closed
for maintenance.
Pressure Relief Valve
This valve protects the system from damage in the
event of overpressure due to blockage or valve
misconfiguration. Above approximately 65 psi, excess
material is returned to both the pump and the tanks.
Pressure Gauge
This gauge reports operating pressure to the boom,
typically in the 15 to 45 psi range. Normally the gauge
is only relied on for setting the relief valve .
Overpressure Dump Line
This line returns the majority of any overpressure
excess material to the tanks.
Pump Outlet Selector Valve
This valve sets the boom flow side of the pump outlet to
boom, off or off-load. A decal on the mount indicates
handle positions.
Offload Quick-Coupler and Plug
This outlet is normally closed. A supply tank 2 inch
hose may be connected for using the implement name
pump to return material to an off-implement name tank.
Boom Supply Strainer
A filter element in the canister traps large particles that
might clog boom orifice plates. See the Seed Rate
manual for maintenance and alternate element screen
sizes.
Flow Sensor
This fitting measures material flow to the boom.
Readings from this sensor are used by the seed
monitor to adjust the pump rate.
Boom Shutoff Valve
This valve is normally open. It might be closed for
maintenance.
Passive Manifold
There are separate boom sections for the implement
name center section and each wing.
Boom
There are separate boom sections for the implement
name center section and each wing.
Boom Clamp
Boom taps are provided for at least the number of rows
present.
Nozzle Body
The standard fitting on an active row is a nozzle body
that accepts various size orifice plates.
Nozzle Gasket
The orifice plate sits inside this rubber seal.
Orifice Plate
These stainless steel plates have precisely sized center
holes that provide flow resistance for optimum boom
pressure. They do not regulate flow rate, but must be
sized to the flow rate. Standard booms include sizes 24,
34 and 48.
VeriFlow Nozzle
These optional nozzles are an alternative to changing
orifice plates. They are spring loaded to maintain a
constant back-pressure over a wide range of rates.
Shutoff Cap
Any unused boom clamps are provisioned with caps
instead of nozzles. Caps may also be used to shut off
rows when changing row spacing.
a. Boom flow may instead be off-load flow for recovery of unused material. The recirculation circuit includes a Relief Valve which
sends excess material back to the tanks in the event of blockage or valve misconfiguration.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 56
L46
L47
L48
End Cap
Each boom section has at least one end cap. These are
removed for flushing booms, such as for winterizing.
Nozzle Drop Line
Each active nozzle is connected to the row applicator
via tubing.
Row Applicator Tube
All standard 25 Series row units include an applicator
tube which can deliver material in-furrow just ahead of
the seed tube. Optional Keeton
®
seed firmers (not
shown) have a delivery tube for applying material
behind the seed tube.
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Page 61
YP4025A-48TR20 Table of Contents Index Operating Instructions 57
L10
L26
L14
L33
L34
L35
L36
L48
L32
L30
L18
L17
L31
L24
L20
L22
L21
L16
L25
L27
L29
L37
L39
L38
L40
L46
L44
L41
L42
L43
L43
L47
L12
L23
Figure 56
Cart Pump Fertilizer System
36414
SML Cart Pump System Diagram
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YP4025A-48TR20 Table of Contents Index Operating Instructions 58
L10
L12
L14
L16
L17
L17
L18
L20
L21
L22
L23
L24
L25
L26
L27
L29
L30
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
L43
L44
L45
L46
L47
SML Cart Tank Fertilizer System Elements
Liquid fertilizer system callouts are consistent across
this entire manual. No single system includes all
elements.
Tank Lid
Tank lids are vented and may be kept tight. Lids have a
removable center section for easier hose fill.
Cart Tank
Cart tanks is 500 or 735 gallons (1900 or 2800 liters)
each. A sight gauge at one end shows current fill level
against a scale.
Tank Discharge Shutoff Valve
This valve is normally left open.
Quick-Fill Inlet and Plug
This 2 inch fitting secures either the plug or the fitting of
an external hose using cam locks. Always close the
valve before removing the plug.
Quick-Fill Shutoff Valve
This valve is opened for filling tanks from a pressurized
supply source.
Quick-Fill Inlet Strainer
This fitting containers an element to trap coarse debris
in the material. Reverse flow through this strainer is not
recommended.
Pump
The centrifugal pump is powered by a hydraulic motor
controlled by a proportional valve (not shown). The
valve is controlled by the seed monitor.
Pump Outlet
The pump normally operates at a flow rate higher than
required for the booms. The pump output is split into a
boom flow, and a recirculation/bleed flow.
Air Bleed Line
This small line provides pump priming and recirculation
of excess material afield.
Pump Drain Plug
Remove this plug to drain or flush the bleed line or
pump.
Pump Recirculation Valve
This valve is normally open. It may be closed for
reduced bypass at very high application rates.
Recirculation Lines to Tank(s)
This line provides pump priming and recirculation of
excess material afield.
Tank Recirculation Valve(s)
This valve is normally open. It might be closed for
maintenance.
Pressure Relief Valve
This valve protects the system from damage in the
event of overpressure due to blockage or valve
misconfiguration. Above approximately 65 psi, excess
material is returned to both the pump and the tanks.
Overpressure Dump Line
This line returns the majority of any overpressure
excess material to the tanks.
Pump Outlet Selector Valve
This valve sets the boom flow side of the pump outlet to
boom, off or off-load. A decal on the mount indicates
handle positions.
Boom Supply Strainer
A filter element in the canister traps large particles that
might clog boom orifice plates. See the Seed Rate
manual for maintenance and alternate element screen
sizes.
Strainer Shut-Off Valve
Normally open, this valve isolates the boom side of the
strainer for servicing.
Cart Outlet Valve
This valve is open for field application and normally
closed at all other times.
Planter Inlet Valve
This valve is open for field application and normally
closed at all other times.
Flow Sensor
This fitting measures material flow to the boom.
Readings from this sensor are used by the seed
monitor to adjust the pump rate.
Boom Shutoff Valve
This valve is normally open. It might be closed for
maintenance.
Passive Manifold
There are separate boom sections for the implement
name center section and each wing.
Boom
There are separate boom sections for the implement
name center section and each wing.
Boom Clamp
Boom taps are provided for at least the number of rows
present.
Nozzle Body
The standard fitting on an active row is a nozzle body
that accepts various size orifice plates.
Nozzle Gasket
The orifice plate sits inside this rubber seal.
Orifice Plate
These stainless steel plates have precisely sized center
holes that provide flow resistance for optimum boom
pressure. They do not regulate flow rate, but must be
sized to the flow rate.Standard booms include sizes 24,
34 and 48.
VeriFlow Nozzle
These optional nozzles are an alternative to changing
orifice plates. They are spring loaded to maintain a
constant back-pressure over a wide range of rates.
Shutoff Cap
Any unused boom clamps are provisioned with caps
instead of nozzles. Caps may also be used to shut off
rows when changing row spacing.
End Cap
Each boom section has at least one end cap. These are
removed for flushing booms, such as for winterizing.
Nozzle Drop Line
Each active nozzle is connected to the row applicator
via tubing.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 59
L48
Figure 57
Material Library Screen
36431
1
123
Figure 58
Fertilizer Rate on Work Screen
36438
2
3
4
4
Row Applicator Tube
All standard 25 Series row units include an applicator
tube which can deliver material in-furrow just ahead of
the seed tube. Optional Keeton
have a delivery tube for applying material behind the
seed tube.
®
seed firmers (shown)
Fertilizer Systems Operation
This information applies to implement names with Great
Plains hydraulic fertilizer pumps. For systems using
customer provisioned components (pump, tanks or
controllers), consult the documentation for those
components.
Refer to Figure 55 on page 54
Flow rate (pump rpm) is controlled by a proportional
valve at the pump motor inlet, under the control of the
IntelliAg
Refer to Figure 58
The default rate is set on the seed monitor console
(Material Setup menu). In this example, the material has
been named “10-34-0”. See the Seed Rate Manual for
details of system setup and configuration.
Refer to Figure 58
The field rate is displayed on the main Work Screen,
and may be adjusted via the Inc/Dec softkeys , once they are configured. See the Seed Rate Manual for details.
The hydraulic fertilizer system may be enabled or
disabled entirely using the Channel On/Off softkey , or
by disabling the Channel in the main Channel Setup
screen (not shown).
®
system.
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Figure 59
Quick-Fill Coupler
29287
L16
L14
L14
Agricultural Chemical Hazards:
Avoid contact with skin or eyes. Wear proper protective
equipment as required by chemical manufacturer. Avoid
prolonged breathing of chemical fumes. Wear respirator as
required by chemical manufacturer. Some chemicals will cause
serious burns, lung damage and death. Seek medical
assistance immediately if accident occurs. Know what to do in
case of an accident.
L16
L30
L14
L30
L16
L26
L30
L14
L24
L37
L16
L26
L30
L34
L35
L14
L24
Implement Name Fertilizer Tanks (Option)
Filling Tanks
Refer to Figure 59, Figure 55 on page 54 and
Figure 56 on page 57
1. Connect nurse-tank hose to quick-fill coupler
located at the rear tool bar. Lock hose in place with
cam-lock levers.
2. Close valve (not shown) going to the in-line filter
located just before the pump.
3. Open valves at each tank and at quick-fill
coupler.
4. Fill tanks, then close valve at quick-fill coupler, and
disconnect the nurse tank hose.
Always close valve at filter when filling or storing
any liquid in tanks. Failure to do so may allow material
to run out of manifold outlets causing contamination
from spillage.
Always fill fertilizer tanks to equal levels. If one tank
fills more quickly, shut that tank valve off to raise the
level in the other tank.
Implement Name Pump System Operation
Refer to Figure 55 on page 54
For normal field operations with fertilizer application,
after loading fertilizer, set the system valves as follows:
1. rear quick-fill: closed
2. tank recirculation (2): open
3. pump main discharge selector: open to pump
and boom
4. tank discharge (2): open
5. pump bypass/recirculation: open briefly to
gravity-prime pump, then closed if desired for high
rate application
6. boom shut-off (strainer isolation) valve: open
Cart Pump System Operation
Refer to Figure 56 on page 57
For normal field operations, when applying fertilizer, set
the system valves as follows:
1. cart quick-fill: closed
2. tank recirculation: open
3. pump main discharge selector: open to pump
and boom
4.
5.
6. tank discharge: open
7. pump bypass/recirculation: open briefly to
cart hose valve: open
rear implement name inlet: open
gravity-prime pump, then closed if desired for high
rate application
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Trailer Operations
SML Cart Operations
A 510 or 735 gallon semi-mounted liquid fertilizer cart
(SML-500 or SML-735) is available for the
YP4025A-48TR20 as an accessory. The cart requires
either the Great Plains hydraulic fertilizer pump option, or a
user-provisioned pump. For the Great Plains system, see
the system overview on page 57.
Checklists in this manual include steps for an SML
configuration. Also consult the SML Operator manual
(407-451M).
Loss of Control and Braking Hazards:
Do not transport with more than 50 gallons in the tank.
Cart wheels and trailing implement name wheels fully caster,
providing no resistance to side sway in turns. Severe under-steer
may result. A full SML-735 cart weighs over 12,000 pounds
(5400 kg), and may cause the tractor’s braking capacity to be
exceeded. An accident could result in serious injury or death,
and certain major equipment damage.
Reverse operations may be performed with care with an
SML cart hitched.
Other Cart Operations
The YP4025A-48TR20 product optionally includes a
trailing pintle hitch, intended for use with user-provisioned
fertilizer tank carts. Hitching/hook-up and operating
instructions are found in the tank cart documentation.
Uncontrollable Load Hazard:
DO NOT EVER transport a pintle-hitched nurse tank cart while
hitched to the product (in train) over roads if there is any liquid
in either tank. Tank(s) must be empty for transport, or the tank
must be towed separately.
Machine Damage Hazard:
Do not attempt reverse operations with a pull-type trailer
hitched to the product. Trailer direction is extremely difficult to
control.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 62
Field Set-Up Checklists
Use the following tables to develop a final checklist for
your tractor/product configuration. Additional or fewer
steps may be necessary depending on tractor features,
product options and planting accessories.
Mechanical Checklist Page
Tongue height preset on 3-point 23
Product unfolded 26
Tongue front latch hook engaged 27
Transport locks moved to storage. 30
Caster locks set to FIELD
(extreme hillsides only)
Side-to-side level at gauge wheels 118
Marker initial length set 168
Marker disk angle set 71
Electrical Checklist Page
Verify electrical hookups solid 19
Check seed monitor terminal and observe any
diagnostic messages
See
With hydraulic circuits in Neutral, check switches
and indicator lights on Clutch Folding Module
switch panel. Confirm Master OFF.
Verify that, when product is lowered, radar speed
sensor is pointed at ground, at an angle
See
approximately 35 below horizontal.
a. Refer to monitor manual.
b. Refer to sensor documentation.
Air System Checklist Page
Manifold to seed box or hopper seal -
Add 1 cup of seed lubricant to each air box, prior
to first use, and prior to loading seed
135
Seed loaded 39
Tube gates turned on to correct rows 48
No air leaks (except from seed box) -
Hose routings - no sags, no pinches (check
wing-folded & field positions)
Hoses fully connected to meters and locked -
63
Treatments (Options) Checklist Page
Confirm Clutch Folding Module “Fert.Pump”
switch OFF
Check tractor-mounted components See
61
a
Ground drive wheel, chain
PFC2000 or PFC1600: Execute Tank Cart
Checklist
Check for correct orifice plates See
Fill system with 100 gallons of water, and check
for leaks
Check all row unit lines connected, free of kinks,
and discharge tube/nozzles clear
See
b
c
-
-
Inlet and hose valves open
SmartBox system loaded, powered up
a. Check supplier manual for tanks and pump. Check fertilizer
a
-
b
section of monitor manual.
b. See PFC2000/PFC1600 Manual (407-158M).
c. Check Seed Rate manual, and manual for fertilizer pump
system.
Row Units Checklist Page
Preset depth handles alike. 83
Preset down force springs alike, except in tracks. 79
Set all unit-mounted coulters to 1/4inch
shallower than opener blades.
81
Check coulter alignment to row 82
Check closing wheel alignment 93
Set press wheels alike. 93
Check action and contact of side depth wheels 84
Check wheel scraper gaps (if installed) 85
-
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Figure 60
Caster Lock
29306
1
3
2
123
Hydraulic System Checklist Page
Check tractor hydraulic reservoir full -
Inspect connections for leaks -
Perform a raise and lower operation 28
Check fan speed and airflow direction See
If equipped with hydraulic drive, confirm Clutch
Folding Module Master switch off, and check
hydraulic product drive rotation
Set Clutch Folding Module switch “Marker/Fold”
to “Marker”
a. Operate fan briefly and observe rotor blades spinning
toward exit port. Check rpm on seed monitor.
50
65
Hydraulic Product Drive Checklist Page
Check chain lubrication and slack 130
See
See
See
a
a
b
a
a
-
Input initial values for desired population See
Pre-run system using manual ground speed
a
mode on seed monitor. Reset to digital
frequency source after test running.
Calibrate radar speed sensor pulses with
product lowered.
Lubricate slider joints on drive shafts 132
Check clutch operation 50
a. Refer to seed monitor manual and Seed Rate manual
ManualB #.
b. Refer to seed monitor manual.
Meters Checklist Page
Correct disks for seed See
Corn?
Check timing of meters for twin-row
Check chain tension. Re-connect any loose idler
tensioning springs.
a. Refer to Seed Rate manual ManualB #.
Caster Locks - Field Operations
For planting in conditions ranging from flat ground to
moderate slopes, the caster locks may be left in the
ROAD position, allowing the casters to pivot freely, and
simplifying fold/unfold operations.
For planting across extreme hillsides, where side drift
might occur, lock the casters after unfolding:
1. Move the lock handle from ROAD to FIELD at
each caster.
The lock arm will automatically capture and hold the
pivot plate detent when the product next moves.
See page 32 for unlocking steps.
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Field Operation
Perform all steps in “Pre-Start Checklist” on page 25
and “Field Set-Up Checklists” on page 62.
First Pass Operation Checklist Page
Set tractor 3-point hitch to “depth control”
1.
operation (and not load control)
Unfold marker on next-row side. 65
2.
Set fan hydraulic circuit to low flow, engage
3.
circuit. Gradually adjust fan hydraulic flow
to obtain recommended initial fan rpm.
Prime meters with seed.
4.
Leave fan running.
Engage hydraulic seed drive via seed
5.
monitor. Refer to seed monitor manual.
If product has a fertilizer system integrated
6.
with the DICKEY-john seed monitor, set the
“Fert.Pump” switch on the Clutch Folding
Module to ON.
In the CLUTCH cluster of the Clutch
7.
Folding Module, set all switches, including
Master, to ON.
Pull forward, lower product, and begin
8.
planting for a short distance.
Stop. Assess:
9.
• planting depth
• seed spacing
• press wheel operation
• fertilizer application (if in use)
Make necessary adjustments 69
10.
47
51
61
50
Ending Planting Checklist Page
Install lift locks 30
-
-
2.
Set caster locks to ROAD 32
3.
Fold product 31
4.
Lights ON -
5.
Transport 34
6.
Sharp Field Turns Checklist Page
Fold marker 66
1.
Raise product 28
2.
Make turn
3.
Lower product 28
4.
Unfold marker on next-row side. 65
5.
Resume planting.
6.
Suspending Planting Checklist Page
Stop tractor
1.
Fan hydraulic circuit to Float or Neutral 46
2.
Fold Marker 66
3.
Raise product 28
4.
Ending Planting Checklist Page
Suspend operations as above, then
1.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 65
Figure 61
CFM: Marker Operation
26119
1
Overhead Crushing and Sharp Object Hazard:
Do not allow anyone to stand near or beyond the end of the
wings during marker operations. Marker arms are heavy and
marker disks may be sharp. Serious injury or death is possible.
Figure 62
Marker Unfolding
29285
1
Figure 63
One Marker Unfolded
29286
Marker Unfolding
Electrocution Hazard:
Beware of overhead electrical lines. If the markers contact
lines, the tractor, raised product and any cart can become
“hot” with no indication. A person standing on the ground and
touching equipment can complete the circuit. Serious injury or
death is likely. At higher voltages electrocution can occur
without direct contact.
If your YP4025A-48TR20 product has markers, unfolding
of the markers is performed only after unfolding the
wings.
The Marker/Aux valve on the left wing must be set to
“Marker”. See “Auxiliary Hydraulics” on page 38.
Before operating markers, make sure cylinders are
properly bled. See “Bleeding Hydraulics” on page 115.
This section presumes correct marker length for your
pass spacing. If this has not been set, or needs to be
changed, see “Marker Extension” on page 168
Dual markers are equipped with an automatic sequence
valve that controls which side activates, as well as
marker deployment.
Folding speed of dual markers is adjusted via set
screws on the sequence valve body. Excessive folding
speed may damage markers. See “Dual Marker Speed
Adjustment” on page 167.
Marker Unfold (one side)
Refer to Figure 62 and Figure 63
1. If the Auxiliary Hydraulic circuit has been used
recently, confirm that the manual Marker/Aux valve
on the left wing is set to “Marker”.
2. On the DICKEY-john
(CFM), set “Marker/Fold” switch to Marker (up).
The LED above the switch illuminates steadily for
normal operation.
®
Clutch Folding Module
3. Move tractor hydraulic control (lever or switch) for
the marker circuit to Extend. Hold until marker is
completely unfolded. Do not leave tractor control in
detent.
4. If the marker side operating is not the desired side,
let it unfold part way, and move the tractor’s circuit
control to “Retract”. When the marker is folded,
move the circuit control to Extend to activate the
other side.
On the CFM, leave the “Marker/Fold” switch in “Marker”
during normal field operations.
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Figure 64
Planting
29264
Row Marker Operation
To alternate which side is marked:
1. Move the tractor’s circuit control to fold marker. Hold
until marker is folded.
2. Reverse the tractor’s circuit control. Hold until the
new side’s marker is fully unfolded.
3. Return tractor control to neutral.
Folding the Markers
If your product has markers, they must be folded and
secured before folding the wings.
1. Move the tractor’s circuit control to Retract. Hold until
marker is folded.
2. Set circuit control to neutral.
Unusual Marker Operations
Both Sides Unfolded
With both markers in their cradles:
1. Unfold either side, and when completely deployed…
2. Move lever/switch to Retract momentarily, and return
to Extend to deploy other side.
Monitor Operation
Monitor operation is described in a separate manual
supplied with your implement name.
Operations covered in that manual (and therefore not in
this manual) include:
• hydraulic drive control
• planting rate
• fertilizer rate
• ground speed
• setting rate limits and detecting out-of-limits
• GPS integration
• meter pressurization adjustment and fan rpm
monitoring
• low hopper alarm
Planting
When all checklist items are complete, a planting pass
normally consists of a few simple steps)
1. Lower product mainframe
2. Extend a marker
3. Drive forward
4. Scan monitors and controls. Check for errors, alerts
and out-of-limits events. Check planting rate reports.
5. Raise marker
6. Raise product mainframe
7. Turn
8. Extend marker as needed for next pass
9. Subsequent Passes resume at step 1.
When reloading seed and fertilizer, check consumption
against anticipated use to that point.
Checking Planting Rate
Although your seed monitor will report useful full pass
results, cautious practice includes manually checking the
seed rate early in the first pass.
The Seed Rate Chart book for this product (manual part
number ManualB #) contains sampling instructions.
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Figure 65
Deploying 3-Point Stands
26034
7
4
6
5
5
5
4
567
Short-Term Parking
1. Fold markers. See “Folding the Markers” on
page 66.
2. Choose a location with level firm ground. Do not
unhitch on a slope.
3. Raise the product.See “Raising Product” on
page 29.
4. Fold the product (optional). See “Folding the
Implement Name” on page 31.
5. Block tires.
6. Re-install the parking stand (“Hitching Tractor to
Product” on page 17).
Refer to Figure 65 (shown without tractor for clarity)
7. For the standard 3-point hitch, deploy the two
forward stands . Remove the inner pin , swing
the stand out, down and vertical around the
bottom pin , and re-insert the pin at .
For hydraulic hitch products, adjust hitch cylinder to
relieve weight from draw-bar.
8. Insert transport locks on all lift cylinders.
9. Disconnect hydraulic lines. Secure them so that they
do not touch the ground.
10. Disconnect electrical cables, capping where
provisioned.
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YP4025A-48TR20 Table of Contents Index Operating Instructions 68
Figure 66
Product Ready for Parking
29290
Possible Chemical Hazard:
Seed disks will have talc and graphite residue, and may have
residues of hazardous seed treatments. Do not wash disks
where food is prepared, or where cookware or dinnerware is
washed. Wear gloves when washing disks. Avoid spray.
Although the disks are dishwasher-safe, do not wash them in
an appliance also used for food cookware or dinnerware.
Removing the seed boxes/hoppers increases the life of the air
box seals, which are otherwise apt to be permanently
compressed if stored under load off-season.
Do not store optional bulk hopper outside on the ground.
Raise it on blocks, securing it in place to prevent from falling
over or blowing around by wind. Store inside if possible.
Long-Term Storage
Complete Parking steps first.
1. Park the implement name indoors if possible, per the
steps above. Great Plains recommends
parking/storing in the raised configuration, folded, on
the parking stands and with all lift cylinder locks
installed.
2. If no hopper or seed box is mounted, cap air box.
3. If empty seed box or hopper is mounted, close the
seed gates and the lids.
4. If partially-loaded seed box is mounted, close seed
gate, and remove seed box. If partially loaded
hopper is present, unload seed via clean-out doors
on air box. Store product only without seed.
5. Open airbox clean-out door. Clean out residual seed.
6. Close airbox clean-out doors. Using product fan,
blow seed to meters, cleaning out the lines.
7. Remove seed disks from meters (this is primarily to
relieve pressure on brushes). Clean disks of residue
build-up (see Caution at right). Use mild soap,
non-abrasive scrubbers, and hot or warm water. If
using sealed storage, dry disks prior to storage.
8. Close seed inlet shutters at meters (to prevent pest
entry to seed hoses). Thoroughly clean seed and
seed treatment residue from seed meters. See
“Meter Clean-Out” on page 108, for more
information.
9. Close all clean-out doors and ports. Shut off all
Y-tubes.
10. Apply grease to exposed cylinder rods to prevent
rust.
11. Flush fertilizer lines (if present). Flush system with
RV anti-freeze if there is any chance of freezing prior
to next implement use.
12. Empty and clean fertilizer strainers.
13. Lubricate all points listed in Maintenance to prevent
rust.
14. Clean product of mud, dirt, excess oil and grease.
15. Inspect YP4025A-48TR20 for worn or damaged
parts. Make repairs and service during off season.
16. Use spray paint to cover scratches, chips, and worn
areas on the product to protect the metal.
17. Cover YP4025A-48TR20 with a tarp if stored
outside.
Storage: Fertilizer Option
The pump, strainer and manifold system require special
attention prior to storage. See “Fertilizer System
Maintenance” on page 124.
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YP4025A-48TR20 Table of Contents Index 69
Adjustments
To get full performance from your implement name, you
need an understanding of all component operations, and
many provide adjustments for optimal field results. Some
Even if your planting conditions rarely change, some of
these items need periodic adjustment due to normal
wear.
of these have been covered earlier in this manual.
Adjustmen t Page The Adjustment Affects
Tongue Height 21 Correct draft load to tractor
Frame height 21 Planting depth consistency
Frame level 23 Planting consistency
Height Switch Adjustment 70 Correct off/on state of meter drive
Wing Leveling 118 Planting consistency
Weight Transfer Operation (Option) 49 Equal available down-force on center and wing rows.
Clutch Lock-Up 50 Temporary operation with a failed clutch
Air System 44
Fan Speed 47 Optimal seed distribution
(values from SRMa)
Planting Rate SRMaRefer to Seed Rate manual
Marker Adjustments
Marker Extension 168 Intended swath spacing
Marker Chain Length Adjustment 54 Marker folding operation
Dual Marker Speed Adjustment 167 Reliable marker operation
Fertilizer Adjustments
Fertilizer Setup (option) 75 Seed germination and growth
Fertilizer Orifices (option) - Refer to Seed Rate manual
25AP Row Unit Adjustments
Opener Depth 83 Planting depth
Row Unit Down Pressure 79 Planting depth uniformity
Row Unit Lock-Up 91 Single/twin-row operation
Coulter Adjustments (Option) 81 Seed depth uniformity
Opener Disc Adjustments 83 Seed depth, seed-to-soil contact
Side Depth Wheels 83 Seed depth, prevents plugging
Adjusting Gauge Wheel Scrapers 85 Consistent seed furrow depth
Seed Meter Setup and Adjustment 86 Consistent seed population
Seed Firmer Adjustments (Option) 92 Seed-soil contact
Press Wheel Adjustment 93 Effective soil coverage
Planting Rate Refer to Seed Rate manual
Monitor Adjustments PDC
a. SRM: Seed Rate Manual (ManualB #)
b. PDC: DICKEY-john
®
Planter/Drill Control manuals
72 Consistent seed flow and disk singulation
b
Refer to Seed Monitor manual
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YP4025A-48TR20 Table of Contents Index Adjustments 70
Figure 67
Seed Monitor Rate Screen
29772
Figure 68
Height Switch Location s/n B1024H+
32347
1
2
3
4
5
6
12345
6
Setting Material Rates
Planting Rate
Adjusting the planting rate requires the following:
1. Monitor configuration:
The seed monitor must be set up with the correct
row count, row spacing and disk cell count. See the
Seed Rate Manual (SRM) and the DICKEY-john
Planter/Drill Control (PDC).
2. Preparing rows:
Correct seed disk selection and Y-tube settings are
required for correct rate. Meter shutter setting and
meter pressurization adjustments assure the rate.
See the SRM.
3. Ground speed calibration:
Seed monitor rate control and reporting is only as
accurate as the speed reported by the radar. See the
PDC manual.
4. Setting seed rate via seed monitor:
See the SRM and the PDC manuals.
5. Checking planting rate:
Although the seed monitor reports a computed
population based on seeds sensed, only an actual
furrow check provides certainty about the actual
seeding rate. See the SRM.
®
Height Switch Adjustment
Refer to Figure 68
The implement name includes a sensing switch that
signals the seed monitor (and activates the optional
hydraulic meter drive), when the product is lowered for
planting. The switch is located at the rear cross tube on
the implement name’s left side.
Although factory-preset for typical planting conditions,
Great Plains recommends adjusting this switch for your
exact field conditions and planting depth.
Crushing Hazard:
Exercise extreme caution when adjusting the switch.
1. Lower the product to the height at which seed
delivery is to begin.
2. Loosen bolt holding switch bracket to plate .
3. Move bracket forward or rearward so that switch
toggle arm makes contact with rear cross tube .
4. Tighten nuts.
Switch is in “Neutral” position when planting. Switch is
“Activated” when raised.
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YP4025A-48TR20 Table of Contents Index Adjustments 71
Overhead Sudden Marker Movement Hazard:
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics
fail. Never allow anyone near the product when folding or
unfolding the markers.
Figure 69
Marker Disk Angle
11757
T
2
1
N
W
T
2W1N2
T
Marker Adjustments
There are three adjustments and two maintenance items
for markers:
• Disk Angle (following)
Even if your row spacing rarely changes, you may
need to adjust disk angle for soil conditions and
planting speed.
• Shear Bolt Replacement (Maintenance, page 117)
If a marker hangs up on an obstruction, a bolt at the
fold is designed to fail.
• Marker Cylinder Bleed (Maintenance, page 117)
If marker operation is irregular, check that system is
not contaminated with air.
• Marker Extension (Initial Setup, page 168)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Speed (Initial Setup, page 167)
Once initially set by your dealer, this rarely needs
modification.
Marker Disk Adjustment
Sharp Object Hazard:
Use caution when making adjustments in this area. Marker
disks may be sharp.
Refer to Figure 69
1. To change angle of cut, and the width of the mark,
loosen
For a wider mark , increase the angle of the
marker with respect to the tube . For a narrower
mark , reduce the angle.
Do not set a marker angle wider than need to make a
useful mark. Excess angle increases wear on all
marker components.
2. Tighten bolts .
The direction of travel tends to drive the disk angle
to Wide. If bolts are not tight enough, or loosen over
time, the disk will slip into the Wide mark
configuration.
1
/2inch bolts holding the disk assembly.
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The meter pressurization system cannot reach full operating
pressure when the hoses, meters and disks are completely
empty. Low initial pressures are normal.
If a meter runs completely out of seed (“starved”),
back-pressure to the air box manifold may prevent prompt
refill. To fill a starved meter, close the seed inlet shutter for
about 15 seconds, then restore it to the original setting.
Fan and Adjustment
1. These steps presume that correct seed disks are
installed (Seed Rate Charts), and the seed inlet
shutters are set for the seed (page 86).
2. With fan off, check meter pressurization reported by
seed monitor. Re-zero as needed (see Seed Monitor
manual).
3. Determine recommended fan rpm based on your
own notes in the Seed Rate Charts, or the table on
page 47.
4. Determine the recommended meter pressurization
based on your own notes or the published value in
the Seed Rate Charts.
5. Start the fan. Gradually increase fan rpm using the
tractor’s hydraulic flow control for the circuit. Adjust
to the developed or suggested value from step 3.
6. Check that at least a small amount of pressure is
being sensed at the meters and meter pressurization
is near suggested value.
7. Perform a “FILL METER” operation for at least one
minute (see DICKEY-john
Control user level 1 manual).
8. Check for meter fill:
With fan running, put the tractor in Park and set the
brakes. Walk behind the wings, remove several rain
covers, and check for seed in meters by looking
through the clear disks. Rows to check are those
with longer hoses or sharper hose bends.
9. Fill the disk pockets with seed:
Run a “FILL DISK” operation.
10. Check control air system pressure. With meters and
disks filled, meter pressurization should be at target
value.
11. Begin planting. Troubleshoot any obvious problems
or alarms.
®
Implement Name/Drill
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Small seeds, such as Milo, may be under-reported. Use
the “Alternate Skip/Double Check” below to verify
seed status at the disc pockets.
Furrow Check:
Expose several seeds in each of several rows, being
careful not to disturb their relative positions. Measure
and average the distance between seeds. Compare this
to the predicted seed spacing for the population in the
Seed Rate manual.
Any instances of no seed where expected may be a
sign of “skips”. Finding two seeds at the same spot is
clear indication of “doubles”
A small varying population deviation between rows is
normal; however, if a row is consistently running lower
or higher than the other rows, it could indicate a meter
or seed sensor problem that needs attention.
“Population Troubleshooting Charts” on page 98.
Insufficient meter pressurization, or unusually rough
fields, can increase the incidence of empty pockets. Be
sure to rule out other causes (such as skipping chains,
meter starvation, incorrect meter disks) before adjusting
meter pressurization to reduce apparent skips.
The suggested increment of change is two presses of
the “SPLIT AIR” softkey, at the factory default value for
change increments.
Excess meter pressurization can increase the incidence
of doubles. Be sure to rule out other causes (such as
incorrect meter disks) before adjusting meter
pressurization to reduce doubles.
12. During the first pass, take note of the average
populations reported on the seed monitor.
Typical Location: Item:
Screen 1, first row
above graphs
Average Overall Population
If the reported population varies from your intentions
by a significant amount, it is imperative to perform a
furrow check. For serious rate variances, for which
the source of the problem and the solution are not
quickly determined, see “Population
Troubleshooting Charts” on page 98.
If the population is only slightly low, the problem can
be skips (periodic empty disk pockets). If slightly
high, the problem can be doubles (period pockets
with double seed). An adjustment to the meter
pressurization may correct either condition (see
step 14).
13. Resume planting. During the next pass, note the
following two readouts on the seed monitor:
Typical Location: Item:
Screen 1, 2nd row
above graphs
Screen 1, 3rd row
above graphs
Minimum Row Population
Maximum Row Population
14. Skips:
If all else is correct, and the overall average
population is running low (or there are gaps upon
furrow check), the cause may be seeds falling out of
disk pockets before delivery to the seed tube.
Increase meter pressurization to correct this. You
can adjust meter pressurization with the product in
motion.
Press the “SPLIT AIR +” softkey on the seed monitor
console. Wait 5 to 10 seconds for the system to
update, while you continue planting. Continue
making small increase adjustments until the reported
population levels out at the target value.
15. Doubles:
If all else is correct, and the overall average
population is running high (or there are double seeds
upon furrow check), the cause may be two seeds in
some disk pockets at delivery to the seed tube.
Decrease meter pressurization to correct this. You
can adjust meter pressurization with the product in
motion.
Press the “SPLIT AIR -” softkey on the seed monitor
console. Wait 5 to 10 seconds for the system to
update, while you continue planting. Continue
making small decrease adjustments until the
reported population levels out at the target value.
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Alternate Skip/Double Check
Small seeds, particularly Milo, are less reliably sensed as
skips or doubles by the seed tube sensors, and watching
monitor population is unlikely to locate the pressure
limits. This test can also be quicker for all seeds.
A. After planting a few passes with initial settings,
remove the rain covers from several rows (use rows
with a variety of seed hose lengths and routes).
B. Make a meter pressurization adjustment. Resume
planting for a pass or less.
C. Stop product motion but leave fan running.
D. Inspect the seed disks closely. Look for empty seed
cells (skips) and cells with multiple seeds (doubles).
E. Repeat step B-step D until limits are established.
Record limits. Re-install rain covers. Plant with
median settings.
Figure 70
Fan and Manifold
29802
U
D
L
R
B
F
1
1
Fine-Tuning
After several passes, and you are comfortable with the
product’s operation, you can optimize meter
pressurization. Use this method during longer passes, so
there are fewer distractions (and see sidebar regarding
Milo).
16. Observe the current overall average population
reported by the monitor.
17. Adjust the meter pressurization down, in discrete
steps, waiting 5 to 10 seconds between adjustments,
until skips occur (actual population begins falling
below target). Note the pressure at which skips
begin.
18. Restore pressure to the initial value at step 16.
19. Adjust the meter pressurization up, by periodic small
increments, until doubles occur (actual population
begins rising above target). Note the pressure at
which doubles begin.
If unable to adjust up to doubles (or skips happen
instead), seed delivery is probably being starved of
air. Increase fan rpm and repeat limit search.
20. Adjust meter pressurization to a value halfway
between the limits established at step 17 and
step 19. This is the ideal value for your crop, disk
and population, providing equal margin against skips
and doubles. Record this value for future use.
Seed Delivery Fan Adjustments
Refer to Figure 70
The primary control for seed delivery air is fan rpm. The
servo vane (not shown), under the control of the split air
system, takes whatever is needed to maintain meter
pressurization (the bottom three manifold outlets ).
Remaining air is sent to the top outlet for seed delivery.
Adjust the basic fan rate with the tractor hydraulic system
and the fan rpm display of the seed monitor. Do not run
at speeds over 4000 rpm or speeds under 2000 rpm.
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YP4025A-48TR20 Table of Contents Index Adjustments 75
Agricultural Chemical Hazards:
Avoid contact with skin or eyes. Wear proper protective
equipment as required by chemical manufacturer. Avoid
prolonged breathing of chemical fumes. Wear respirator as
required by chemical manufacturer.Some chemicals will cause
serious burns, lung damage, and death. Seek medical
assistance immediately if accident occurs. Know what to do in
case of accident.
Liquid Fertilizer Adjustments
Liquid fertilizer distribution systemsa are optional on the
implement name and are optimized for use with the
optional on-board 2x200 gallon tanks and/or the Great
Plains SML-500 or SML-735 tank carts.
If installed, there are several points of fertilizer setup
and/or adjustment:
1. Row orifice setup
Orifice plate sizes are chosen to assure consistent
pressure at all nozzles. Refer to the Seed Rate
manual.
2. Relief valve setting
See “Fertilizer Relief Valve” on page 76.
3. Inlets
Both Type 2 (1-section, single inlet) and Type 3
(3-section, 3-inlet) systems have quick-connect
inlets and shutoff valves at the back of the product.
See page 22 for hook-up details.
4. Strainer setup
The optional ground drive pump includes a strainer.
The mesh screen size must be compatible with the
orifice plates in the distribution system. Refer to the
Seed Rate manual.
5. Seed monitor control channel adjustment.
Once the control channel is set up, rate adjustment,
and channel enable/disable, are operations
performed using the seed monitor screen. The Seed
Rate manual for details.
Great Plains recommends checking with your local
agronomist as soil conditions vary. Soil conditions in your
area may need less or more fertilizer than represented in
these charts. In furrow, do not exceed 12 gallons per
acre in any case.
The liquid fertilizer system is designed to operate
(ideally) between 15 and 40 psi, but in no case more
than 65 psi. Several system elements affect system
pressure, and need initial setup, periodic maintenance,
and adjustment when changing fertilizer rates.
a. Type 2, Type 3, or both, with or without product-mounted ground drive pumps for Type 2. See page 22 for details.
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Figure 71
Strainer
21965
Figure 72
Fertilizer Relief Valve
25164
1
2
3
4
5
6
7
1
2
5
6
7
7
257
5
Liquid Fertilizer Strainer
The optional Great Plains fertilizer pump systems include
a strainer, which may be located on the implement name
or on a fertilizer cart.
The strainer(s) are delivered with a mesh screen. You
need to check that each screen is an appropriate size for
the orifice plates you plan to use.
If changing screen sizes, keep in mind the following:
• Generally, select a mesh screen the same or slightly
smaller than the orifice size.
• A substantially smaller mesh (e.g. 100) will reduce
manifold orifice plates plugging so often, but the
strainer screen will have to be cleaned more often.
• A much larger mesh (e.g. 50 or 30) will pass more
material but should only be considered when using
large manifold orifice plates.
• A plugged or partially plugged screen starves the
pump and results in a reduced application rate.
Monitor the pressure gauge for a reduction in
pressure that indicates a plugged strainer screen.
Fertilizer Relief Valve
Refer to Figure 72
An optional fertilizer system may include a relief valve
and pressure gauge . The relief valve protects the
manifold, lines and fittings from excessive pressure. Any
product that dumps over the relief valve will discharge
from the dump line in relative safety.
To set relief valve:
1. Unlock plastic jam nut from relief valve knob.
2. Unscrew knob clockwise (looking down) until it
loses contact with internal spring.
3. Screw knob counterclockwise two turns.
Start at this setting.
4. Observe manifold gauge and watch for relief valve
dump line discharge while operating in the field.
5. If valve is dumping product and gauge reads under
65 psi, stop tractor and turn knob clockwise
1
/4turn. Continue operating at normal field speed.
Repeat this step as needed until no product is
discharged from relief valve dump line .
6. If the pressure gauge reads above 65 psi, change to
a larger orifice. Go to step 2 and repeat.
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Figure 73
Fertilizer Orifice Plate
29984
1
2
1
2
Fertilizer Nozzle Adjustments
Refer to Figure 73
In general, the orifice needs to be small enough to
create at least 15 psi of pressure in the manifold but
large enough to prevent the manifold pressure from
exceeding 65 psi.
The minimum pressure is required to even out the flow of
fertilizer between rows. To reduce orifice plugging and
pump wear, use the largest orifice practical for your
fertilizer application rate. Alternate orifice plates are
listed in the Seed Rate manual.
The best pressure range to maintain is 20-40 psi to
ensure optimum distribution while minimizing leakage.
Built-in check valves at the row units prevent flow below
15 psi.
The Seed Rate Chart book for this product (manual part
number ManualB #) contains a table of orifice sizes in
gallons per acre.
Agricultural Chemical Hazard:
Wear protective gloves when changing orifice plates.
System Damage/Uneven Application Risks:
Select orifice plates to balance flow. Sizes too small can result
in system rupture. Sizes too large can result in unbalanced
flow. Orifice plates do not set fertilizer rate. Rate is set at the
pump. Plates only create back-pressure to balance flow.
If frequent plate changes are likely, consider replacing
the standard nozzles with SprayTarget VeriFlow
nozzles. The novel spring-loaded design provides
consistent back-pressure over a wide range of rates and
pressures. See page 141 for ordering information.
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Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 74
25 Series Row Unit
36439
2
1
3
4
5
6
7
8
9
10
11
13
14
15
12
6
25 Series Row Unit Adjustments
Refer to Figure 74
(which depicts a row unit populated with most
optional accessories supported for use with the
Product)
From front to back, a Great Plains 25 Series row unit can
include the following capabilities (some optional):
1. Lock-Up Pin Storage Hole (Hole Standard)
See “Row Unit Shut-Off” on page 90.
2. Down-Pressure Cam (Standard)
Row units are mounted on parallel arms. This
parallel-action mounting allows the row-unit to move
up and down while staying horizontal. Springs add
an adjustable force, set by the cam, to the row
weight. See “Row Unit Down Pressure” on
page 79.
3. Air Inlet (Standard)
Pressure-regulated air enters the meter here and
holds seed in the disk pockets. See “Fan and
Adjustment” on page 72.
4. Seed Delivery Hose Inlet (Standard)
Air carrying the bulk seed is vented at the bottom of
the air release cone. Gravity then carries the seed
into the meter at the shutter . The hose is easily
removed for inspection. There are no adjustments.
5. Air-Pro
See “Air-Pro
6. Seed Inlet Shutter (Standard)
This controls the level of bulk seed at the disk. There
are four operating settings, plus fully open
(clean-out) and fully closed (shut-off or storage). See
“Seed Inlet Shutter Adjustment” on page 86.
7. Side Gauge Wheel Depth (Standard)
The T-handle sets planting depth by controlling the
height of the side gauge wheels relative to the
opener discs. See “Side Gauge Wheel
Adjustment” on page 84.
8. Press Wheel Force, Angle, Stagger (Standard)
The press wheels close the furrow, gently pressing
the soil over the seed to ensure good seed to soil
contact for even emergence. See “Press Wheel
Adjustment” on page 93.
9. Row Unit Lock-Up Hole (Hole Standard)
Pins are standard on some models. With the row unit
raised above level, the lock-up pin is inserted here.
See “Row Unit Shut-Off” on page 90.
10. Unit-Mount Coulter (Option)
Coulters cut remaining trash and begin opening the
seed furrow. Working depth is set by row depth and
a mounting hole selection. See “Unit-Mount Coulter
Adjustments” on page 81.
®
Seed Meter (Standard, Choice of Disks)
®
Meter Disk Installation” on page 88.
11. Opener Discs (Standard)
Row-unit double disc openers create the seedbed
furrow. They have adjustments for angle and
spacing. See “Row-Unit Opener Disc
Adjustments” on page 83.
12. Seed Tube with Sensor (Standard)
Requires no adjustment.
13. Scrapers (Optional, not shown)
Inside scrapers require no adjustment. For gauge
wheel scrapers, see “Adjusting Gauge Wheel
Scrapers” on page 85.
14. Seed Firmers (Seed Flap Standard, not shown)
An optional seed firmer (Keeton
seed bounce and improves soil contact. It may also
deliver fertilizer. See “Seed Firmer Adjustments” on
page 92.
15. Press Wheel Type (Choice)
A variety of single and dual press wheel assemblies
are available, some region-specific. Consult your
Great Plains dealer.
®
shown) minimizes
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YP4025A-48TR20 Table of Contents Index Adjustments 79
Figure 75
Checking Furrow
36439
{
Inspect Furrow Here
Light or no side gauge
wheel tracks
Insufficient down-force
Increase down-force
Gauge wheels compress
loose soil only
Ideal
No adjustment required
Side gauge wheels
making deep tracks
Down-force too high
Reduce down-force
Figure 76
Assessing Down-force
1
2
3
Figure 77
25 Series Row Unit Springs
36439
1
1
Row Unit Down Pressure
Refer to Figure 75
The ideal amount of down-force causes the side gauge
wheels to compress any loose surface soil, but not press
a trench into subsoil.
To assess down-force, operate the implement name for a
short distance on typical ground (with or without
seeding), and stop. Leave the implement name lowered
(row units in ground).
At several row units, inspect the furrow created by the
opener discs, but prior to furrow closing by the press
wheels.
Be sure to inspect rows both in and out of tire tracks.
Refer to Figure 76
1. If the side gauge wheels are leaving no tracks, or
light tracks, increase down-force.
2. If the wheels are compressing trash and loose soil,
and leaving clear tracks right at the top of the
subsoil, down-force is probably correct and needs no
adjustment.
3. If the wheels are creating a trench into the subsoil,
down-force is too high and needs to be reduced.
Adjusting Down-Force
The next two pages cover the standard mechanical
down-force system. If the optional Row-Pro™ system is
installed, down-force is set higher than required, and the
Row-Pro™ system automatically lowers it so that each
section runs at optimum down-force.“Appendix R -
Row-Pro™” on page 172 for Row-Pro™ setup details.
Refer to Figure 77
Row unit springs provide the primary down pressure
necessary for row unit discs to open a seed trench. The
weight of the row units themselves contributes about
130 pounds (59 kg) of the total force.
The springs allow the row units to float down into
depressions and up over obstructions. Springs also
provide down force on coulters when using optional row
mounted coulters, and provide the primary down force on
row cleaners (optional), seed firmers (optional) and
press wheels.
With Frame-Mounted Coulters:
With frame-mounted coulters, the seed trench is
primarily opened by the coulters. Row unit springs
provide only additional assistance needed to make a
furrow “V” shaped and ensure furrow closure by the
press wheels.
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Figure 78
25AP Series Row Unit
Spring Adjustment
29605
3
5
2
2
Cam Notch Pounds Kilograms
zero (out of notch) Lock-Up & Maintenance
one 235 105
two 260 120
three 295 135
four 355 160
five 415 190
six 475 215
tip Do Not Use
29831
Figure 79
Row Unit Minimum Cam (at 1)
27065
4
6
3
Figure 80
Row Unit Maximum Cam (at 6)
27065
452
6
An adjuster cam sets down pressure individually for
each row unit. This is useful for penetrating hard soil and
planting in tire tracks. For best results always adjust
tractor tires so they are not ahead of 30 inch or 70 cm
rows.
Refer to Figure 79
Use only enough down pressure to cut the seed trench
and maintain proper soil-firming over seed. Excessive
row unit down force will lead to premature wear on row
unit components, uneven seed depth and gauge wheel
slippage.
Refer to Figure 78 (shown at cam setting 2),
Figure 79 and Figure 80
To adjust down pressure, use a 1
1
8inch (29 mm) open
end wrench or the tool stored under the walkboard.
1. Raise the implement name. Although this adjustment
can be made with the implement name lowered, the
springs will be in tension, and will require more effort.
The extra force required may also damage tools.
2. Install lift cylinder locks.
3. Put tractor in Park and shut it off.
4. Position wrench on the fixed nut near or slightly
forward of vertical.
5. Pull upper spring link back.
6. Move the adjustment cam to the new setting on
the spring adjust bar .
Do not set all rows higher than notch four. Using high
settings across all rows causes uneven planting.
Individual rows may be set higher if running in tire
tracks.
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YP4025A-48TR20 Table of Contents Index Adjustments 81
Figure 81
25 Series Unit-Mounted Coulter
29124
7
Figure 82
Coulter Blade Mounting Holes
29125
1
2
5
4
3
6
7235146
Unit-Mount Coulter Adjustments
Coulters are not factory-installed. Check alignment
and depth prior to first use.
Coulter Depth Adjustment
The ideal operating depth for coulters is
above opener depth. Although they may have originally
been set to this depth, coulter (and opener) blades wear
with time, and may need adjusting.
Adjusting the coulter depth is accomplished by
re-mounting the coulter blade in one of the six mounting
holes arranged in a staggered pattern in the coulter
bracket.
Refer to Figure 81 and Figure 82
Raise implement name and install cylinder locks before
working on coulters. Row unit may be fully lowered or
locked up. Do not attempt to move blade when the
current or new position causes it to contact the ground
during the adjustment. Be careful around the front end of
row units. Row cleaner tines and coulter blades may be
sharp.
To adjust coulter depth:
1. Determine the present opener and coulter depths.
2. Note which bracket hole the coulter is presently
using.
3. Determine which new hole will position the coulter
closer to the
1
/4inch-above depth. See the table
below.
4. Remove the
5
/8-11 x 4 inch bolt, lock washer and
nut (in Figure 81).
5. Move the blade to the new position. Insert the bolt,
and tighten on the lock washer and nut.
1
/4inch (6 mm)
Hole
Number
Depth of (new) coulter blade relative to (new)
opener blades
1 inch (25 mm) above
5
/8inch (16 mm) above
1
/4inch (6 mm) above
0
3
/8inch (9.5 mm) below
3
/4inch (19 mm) below
6. Re-adjust row cleaners, if installed.
If a worn coulter cannot be adjusted to satisfactory
operating depth, replace coulter.
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YP4025A-48TR20 Table of Contents Index Adjustments 82
Figure 83
25 Series Coulter Alignment
26125
1
2
3
123
Figure 84
25 Series Coulter Mount
26126
4
4
Coulter Row Alignment
Refer to Figure 83
For unit-mounted coulters, the ideal alignment is for the
blade to open a furrow directly ahead of the opener
discs.
As a check on coarse alignment, sight along the coulter
blade center-line , the gap between the opener
blades , and the centerline between the press
wheels . If they are clearly out of alignment, either the
coulter or the press wheels (or both) may be in need of
adjustment.
The exacting test of correct alignment is field results.
Operate the implement name on some test ground (no
seed required), and verify that the opener blades are in
the groove opened by the coulter, and that the press
wheels are centered over the furrow. See “Press Wheel
Adjustment” on page 93 for press wheel alignment.
Refer to Figure 84
To adjust coulter alignment, loosen the four bolts that
attach its bracket to the row unit. The holes on the row
unit are slotted, side-to-side, and allow the coulter
bracket sideways and rotational adjustment.
Keep the coulter blade vertical while adjusting.
If the blade cannot be brought into alignment, check that
the blade spindle itself is using the same hole location on
each side of the bracket.
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YP4025A-48TR20 Table of Contents Index Adjustments 83
Figure 85
Opener Adjustments
36439
2
3
1
111
1
Figure 86
Opener Disc Contact Region
26127
4
5
4
Figure 87
Opener Disc Spacers
26128
9
8
6
7
5678989
Row-Unit Opener Disc Adjustments
25 Series openers have three adjustments:
1. planting/seed depth
2. opener disc to disc clearance
3. gauge wheel/opener disc clearance (page 84)
Setting Planting Depth
Refer to Figure 85
The “T” handle sets planting depth by limiting the how
high the side depth gauge wheels ride relative to the
opener discs. The position of the seed tube itself is fixed
relative to the discs, and is not adjusted.
To adjust seed depth, pull the “T” handle up and back,
move it forward or aft, and set it back in a different pair of
holes in the scale.
• For shallower planting, move the “T” handle
forward.
• For deeper planting, move the “T” handle back.
Opener Disc Contact Region
Refer to Figure 86
Opener disc angle and stagger is not adjustable, but
disc-to-disc spacing is, and may need attention as discs
experience normal wear. Spacers will need to be reset
when blades are replaced.
The ideal spacing causes the blades to be in contact for
about one inch . If you insert two pieces of paper
between the blades, they should slide to within zero
(touching) to 1
gap between the blades should not be significantly
greater than the thickness of two sheets of paper.
If the contact region is significantly larger or there is a
large gap, it needs to be adjusted by moving one or more
spacer washers.
Adjusting Disc Contact
Refer to Figure 87
1. Raise the implement name and install lift cylinder
locks.
2. Remove the side gauge wheels on the row unit in
need of adjustment.
3. Remove the bolt retaining the opener disc on
one side. Carefully remove the disc. Do not lose the
hub components and spacer washers , .
4. To reduce the spacing between the discs (the normal
case), move one spacer washer from the inside to
the outside of the disc.
5. Re-assemble and check disc contact.
1
/2inch (3.8 cm) of each other. If zero, the
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YP4025A-48TR20 Table of Contents Index Adjustments 84
Incorrect
Correct
Figure 88
Disc/Gauge Wheel Alignment
Side Gauge Wheel
Opener
Discs
Side Gauge Wheel
Figure 89
Opener-Gauge Wheel Contact
22531
Contact Within this Area
Figure 90
Checking Wheel/Disc Contact
26129
12231
Side Gauge Wheel Adjustment
Refer to Figure 88 and Figure 89
Disc-to-wheel angle and clearance ideally has the wheel
just touching the disc when the wheel is raised to
planting depth (is up against the stop set by the “T”
handle. The goal is to have both disc and wheels turn
freely, but keep soil and trash from getting between
them.
These two adjustments interact with each other.
Changing one requires at least checking the other.
In addition to changing the disc angle due to changing
depth or new field conditions, these two settings may
need attention over time as the disc and wheels wear
from normal use. This adjustment will also need to be made if any opener components are replaced.
Refer to Figure 89
For 2 inch (5.1 cm) planting depth, adjust side gauge
wheel angle so wheels contact row unit discs at the
bottom of wheel. Check with row units in soil so wheels
are held up.
At the same time, keep side gauge wheels close to
opener discs so openers do not plug with soil or trash.
Wheels should be out far enough so discs and wheels
turn freely.
Refer to Figure 91 on page 85
To adjust side gauge wheels:
1. Raise the implement name and install lift cylinder
locks.
2. Loosen hex-head bolt . Move wheel and arm out
on O-ring bushing.
3. Loosen pivot bolt Turn hex adjuster so indicator
notch is at 5 o’clock to 7 o’clock.
Use this as the starting point for adjustment.
4. Move wheel arm in so side gauge wheel contacts
row unit disc. Tighten hex-head bolt to clamp arm
around bushing and shank.
Refer to Figure 90
5. Check wheel-to-disc contact at 2 inch (5.2 cm)
planting depth. Lift wheel 2 inch, check contact and
release. When let go, wheel should fall freely.
• If wheel does not contact disc at bottom to area
where blade leaves contact with soil, move hex
adjuster until wheel is angled for proper contact with
disc.
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YP4025A-48TR20 Table of Contents Index Adjustments 85
Starting Point
Figure 91
Disc/Gauge Wheel Adjustment
22524
22525
2
2
1
3
3
1
112
Figure 92
Gauge Wheel Scraper
25273
3
1
2
4
123234241
• If wheel does not fall freely, loosen hex-head bolt
and slide wheel arm out just until wheel and arm
move freely. Tighten hex-head bolt according to
grade:
1
/2inch Grade 5 bolt on 25 series,
75 foot-pounds (102 N•m).
1
/2inch Grade 8 bolt on 25 series,
110 foot-pounds (149 N•m).
Use “Torque Values Chart” on page 152 for
reference.
6. Keep turning hex adjuster and moving wheel arm
until the wheel is adjusted properly. When satisfied,
tighten pivot bolt to 110 foot-pounds (149 N•m).
Adjusting Gauge Wheel Scrapers
Refer to Figure 92 (bottom view)
Scrapers are optional, and may be useful in moist or
sticky soils that tend to accumulate on gauge wheels and
reduce intended planting depth.
To adjust scrapers:
1. Loosen nut .
2. Slide scraper toward gauge wheel until scraper
touches tire.
3. Slide scraper away from wheel leaving a
1
8inch (3 mm) gap at .
4. Rotate scraper left and right around bolt, making
sure it cannot touch tire if bumped in field. If it can
touch tire, back scraper away from wheel until it
cannot.
5. Center scraper on bolt until gap is constant.
6. Tighten nut .
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YP4025A-48TR20 Table of Contents Index Adjustments 86
Figure 93
Rain Cover Removal
29606
1
2
3
123
Figure 94
Seed Inlet Shutter
29607
0
5
|
II
III
||||
Setting Setting Typically Used For
Top (0) Closed: Row Shut-Off, Meter Re-Fill
| (1)
Small seeds, such as Milo, with little or no
treatments
|| (2)
Small treated seeds and edible beans
(such as Soybeans)
||| (3) Corn, round popcorn
|||| (4) Large corn, or heavily treated corn
Bottom (5) Wide Open: Clean-Out
Seed Meter Setup and Adjustment
There are adjustments for seed inlet, and choice of
disks. There are no other adjustments, in particular no
brush adjustments, at the meter.
Meter Rain Cover
The rain cover keeps side winds from unseating seed in
disk pockets. It also keeps precipitation, sunlight and
field debris out of the meters.
Refer to Figure 93
To remove the rain cover, peel the flexible snap latches,
at top and rear , away from the meter housing. Pivot
the cover forward and down at tab in slot.
When removing a cover, inspect it for damage and
missing parts. If a cover does not have both latches, and
an intact edge seal under the latches, the cover is apt to
be lost during transport or field operations.
To replace a latch, temporarily remove the seal near the
latch. Slide the replacement latch onto the cover lugs
from the meter side, then snap the other end down over
the lugs. Re-install the seal.
Seed Inlet Shutter Adjustment
Refer to Figure 94 (showing the shutter at setting 3)
The seed inlet shutter regulates the volume of bulk seed
presented to the seed disk. The operating settings vary
with crop, seed size and treatments. The shutter also
has settings for row shut-off (completely closed), and
clean-out (wide open).
The Seed Rate Charts include suggested initial shutter
settings. Refine these settings based on experience, and
on inspection of the slope of the seed pool at the bottom
of the seed disk.
The shutter is operated by a handle. Lift the handle away
from the meter plate. Move the handle to half a setting
higher than the new setting, then back to the new setting,
and lower the pawl into that slot.
The table at right is a general summary of shutter
settings.
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YP4025A-48TR20 Table of Contents Index Adjustments 87
Figure 95
Milo: Seed Inlet Shutter at: 1
29602
1
8:00
1
Figure 96
Soybeans: Seed Inlet Shutter at: 2
29604
1
8:30
1
Foreign Object Risk:
After clearing a bridge, or a delivery blockage upstream,
check the seed pool at the meter for any debris that might have
been the original cause. Remove such debris from the meter
before planting. Don’t run the risk of an object lodging in a
seed pocket and causing on-going skips.
Figure 97
Corn: Seed Inlet Shutter at: 3
29603
1
8:30
Optimal Seed Pool Slopes
The optimal seed slope is one that results in the most
consistent seeding, with minimal skips and doubles. The
column at right has photographs of pool slopes found to
be optimal for representative seeds.
If the suggested initial shutter settings do not seem to be
working for your seed, adjust the shutter to achieve
specific reserve slope targets.
Refer to Figure 95
For medium size and smaller seeds that flow easily, the
slope runs from just above the 8:00 (o’clock) position on
the housing wall, forward and down to one or two seeds
deep at the base of the rear strip brush .
Refer to Figure 96 and Figure 97
For medium size and larger, or heavily treated smaller
seeds that flow less easily, the slope runs from at or
slightly above the 8:30 (o’clock) position on the housing
wall, forward and down to 3-6 seeds deep at the base of
the rear strip brush .
In general, the seeds at the base of the strip brush need
to be deep enough that no air escapes there, and so that
just enough seeds are present to begin populating cells.
Keep the top left/rear end of the pool below the 9:00
o’clock position (meter horizontal center-line).
Meter Re-Fill
Once planting is underway with the seed pools set, it is
infrequently possible for bridging at or above the inlet to
starve the meter of seed.
An empty meter causes seed monitor “Row Failure”
alarm, with a report of the row number. Row numbers are
counted from the left wing (outside row is row 1).
Stop, and put the tractor in Park. Leave the fan running.
Locate the failed row, remove the rain cover, and verify
that the meter is empty. Note the shutter setting.
Temporarily open the shutter one of two notches wider. if
the problem was inlet bridging, seed should flow into the
meter immediately.
If inlet bridging is not the problem, little or no seed flows
into the meter with the shutter open wider. In this case,
the problem is further upstream in the seed flow, and
may be bridging at the air release screen at the top of the
meter. Close the shutter completely for about 15
seconds. This prevents meter pressurization air from
opposing seed delivery air. The delivery air pressure
usually collapses the bridge. Re-open the shutter and
see if seed now fills the meter.
If no obvious foreign object was the cause of the
bridging, the shutter setting may have been too small for
the seed. Verify that this and other operating rows were
at the correct initial shutter setting. If so, re-set the
shutters to the next higher opening.
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YP4025A-48TR20 Table of Contents Index Adjustments 88
Figure 98
Disk Removed From Meter
29608
2
1
1
2
Figure 99
Disk on Clamp and Seat
29611
3
1
4
1
3
Figure 100
Disk Clamped
29614
4
Air-Pro® Meter Disk Installation
1. Cross-check Seed Rate Chart data against part
number/description molded into disks to be used.
Population Risk:
Use the same disk in all active rows.
2. Inspect disks to be installed. Do not install damaged
or excessively worn disks. Either can cause irregular
seeding. Chips and cracks accelerate brush wear.
3. Remove meter rain cover (page 86).
Refer to Figure 98 (depicting an empty meter)
4. Inspect meter (see page 111 for details).
5. Make sure clamp is aligned with seat .
Refer to Figure 99
6. With the seed pocket side facing the meter housing,
place the new seed disk on the disk seat.
7. Rotate disk clamp clockwise 45° to clamp disk.
Clamp seats into detents in disk hub.
On a new meter, or with new brushes installed, force
the disk into the brushes to allow the disk clamp to
rotate. This condition eases as the brush fibers are
trained during initial rotations.
With slightly used brushes, when a disk is first
clamped, it is normal for the disk hub to be flat with the
face of the disk seat only on the inlet (rear) side. The
disk fully seats as it first turns. This condition eases as
the brush fibers receive further use.
Brush Mis-Seating Risk:
Rotate disks forward shortly after disk installation. If planting
is not anticipated within an hour or two of disk installation,
rotate the drive system a few turns to ensure that meter brushes
lean in the correct direction. Correct lean improves meter
performance and reduces air consumption. This step is
particularly important for new brushes.
Brush seating may be accomplished with or without seed
present, and may be combined with “FILL DISK”. An
alternate method, which avoids running the tractor,
monitor and fan, is to rotate the section’s meter drive
shaft, top forward, with a
8. Reset seed inlet shutter to setting recommended
by Seed Rate Chart, or to your own developed value.
9. On the seed monitor console, select the new
Material, seed disk Cell Count, and target
population.
10. Re-install rain cover (page 86).
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7
/8inch open-end wrench.
Page 93
YP4025A-48TR20 Table of Contents Index Adjustments 89
Figure 101
Remove Disk
29611
3
1
4
4
1
2
28420
.tif
600 dpi
Removing a Seed Disk
Refer to Figure 101
1. Remove rain cover. If seed is present, close
shutter to prevent more seed from entering meter.
Attach funnel (page 108).
2. Hold seed disk in meter. Rotate disk clamp
counterclockwise 45 to release disk.
3. Tilting top of disk toward meter, slowly remove disk,
allowing seed to collect in funnel. Open shutter to
release remaining seed up to wing tube.
4. Clean seed from all brushes. Clean disk seat ( in
Figure 98 page 88), so that new disks can seat fully.
Inspect brushes for excess wear and damage. See
“Meter Brush Maintenance” on page 111.
5. Inspect removed disks for excess wear and damage.
Set aside any disks requiring replacement. Clean
other removed disks and place in storage. See
“Seed Disk Maintenance” on page 113.
6. Re-install the rain cover (page 86).
Sprocket Indexing (Stagger)
If you are planting:
• twin-row crops,
• at seed interval spacings above 6
1
/2inch (16.5 cm),
you can synchronize each pair of adjacent meters in a
twin row so that you achieve the maximum seed-to-seed
spacing between the units of the pair.
Refer to the Seed Rate manual for details.
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YP4025A-48TR20 Table of Contents Index Adjustments 90
Figure 102
Seed Inlet Shutter Closed
29609
2
1
Irregular Seeding Risk:
Always use a blank disk in a shut-off row. Operating with no
disk, or with a seed disk but no seed, destabilizes the regulated
airflow, particularly at rows with pressure sensor lines.
Figure 103
Shutter Closed, Blank Disk Installed
29610
2
1
Row Unit Shut-Off
Skip-row operations, such as planting from every other
row when switching from 30 inch twin-row to 30 inch
single-row, requires shutting down unused rows.
Shutting off seeding at a row involves 4 to 7 steps:
1. Identify the rows to shut off.
2. Fully close seed inlet shutter (always done).
3. Replace seed disk with blank disk (always done).
4. Close seed flow to row at Y-tube (if present).
5. Lock up row unit to reduce wear (optional).
6. Reset marker extension (if used, page 168).
7. Reset monitor active row pattern and row spacing to
avoid nuisance alarms (always done).
Meter drive is not disabled on 25AP row units during
shut-off.
1. Identify Rows to Shut Off
On twin-row products, openers are installed with short
and long opener mounts. If locking up unused rows of a
twin-row product, shut off the rear (long mount) rows.
On single-row products with mid-length mounts, any
rows may be locked up.
2. Close Seed Shutter
Refer to Figure 102 on page 90
Lift the handle away from the plate. Move it to the top
position, and release the handle into the notch.
Closing the shutter prevents meter pressurization air
from leaking into the bulk seed air system, resulting in
lower pressures in adjacent rows, with risk of skips.
The shutter also stops seed flow from a row as soon as
the meter is empty. Bulk seed flow to the row falls to nil
as soon as the seed backs up to the air release vent at
the top of the meter. If the row is served by a Y-tube, the
Y-tube also needs to be shut off for the row (step 4).
3. Install Blank Disk
Refer to Figure 103
Clean out meter. See “Meter Clean-Out” on page 108.
Remove seed disk and install blank disk. See “Air-Pro
Meter Disk Installation” on page 88.
Blank disks (part number 817-841C) are essential in row
shut-off, both to maintain consistent meter back-pressure
to meter pressurization and to prevent wear on a seed
disk.
Blank disks are engineered to simulate a seed disk with
seed in all pockets. Blanks are particularly important on
the rows with sensor lines to the pressure chamber.
®
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YP4025A-48TR20 Table of Contents Index Adjustments 91
Figure 104
Y-Tube Open and Closed
29758
Figure 105
25AP Row Unit Lock-Up Pin
25269
36439
1
2
3
4
5
123
Certain Machine Damage:
Do not pin the row unit while it is in the lowered position.
If the pin is inserted below the parallel arm, unit damage
occurs as soon as planting begins.
Figure 106
25AP Row Unit Locked Up
29756
3
452
3
4. Close Y-Tubes
Refer to Figure 104
If any shut-off rows are served by a Y-tube, close the
gate for the branch to that row. Rotate the gate cap until
the indicator/handle is perpendicular to the tubes.
Closing the Y-tube prevents seed from entering an
unused hose, reducing waste and simplifying clean-out.
5. Lock-Up Row
Alternate twin-row units (the rear units) can be pinned in
the up position to accommodate single-row spacing.
Refer to Figure 105
The lock-up pins for each front row unit are located in
a storage hole in the row unit mount. To lock up a unit,
the unit must be raised, and the pin moved to the lock-up
hole in the row unit shank.
Crushing and Sharp Object Hazards:
Do not attempt to lift a row unit by hand. The weight of the
unit, plus the force of the springs (even at minimum) is too
great (plus, a free hand is needed for pin insertion). Even with
multiple people lifting, hand-lifting is unsafe - there are
numerous sharp edges, and the row unit snaps down violently
if a grip is lost.
If you lose a pin, the replacement part number is
805-033C.
1. Raise the product. Although this adjustment can be
made with the product lowered, the springs will be in
tension, and will require more effort. The extra force
may also damage tools.
2. Install lift assist cylinder locks. Lower parking stands.
3. Set the down pressure spring cam to zero, per the
instructions on page 80.
4. Raise the row unit high enough that the hole for the
pin is above the lower parallel arm. This can be done
in several ways, including:
a. use a hoist at the rear of the shank
b. use a jack under the shank extension
Crushing Hazard:
Use a jack or hoist. Raising a row unit on a block by lowering
the product is risky. The potential for hydraulic failure creates
a safety hazard. Full lowering can damage components.
Refer to Figure 106
5. Remove the pin from the storage hole and insert
and secure it in the lock-up hole .
6. Lower row unit until lock-up pin rests on lower
parallel arm.
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YP4025A-48TR20 Table of Contents Index Adjustments 92
Figure 107
Keeton
®
Seed Firmer
28316
1
1
Engage the lever stop under the handle when
Seed-Lok
®
is in use. If left disengaged , a furrow
obstruction could cause unintended lock-up.
Figure 108
Seed-Lok
®
Lock-Up
31543
2
3
1
4
2
3
5
6
123145614
5
Seed Firmer Adjustments
Series 25 row units include a standard seed flap, and
accept one of two optional seed firmers (which may be
included in your selected opener bundle).
Sharp Object Hazard:
Row unit disc blades may be sharp. Use caution when making
adjustments in this area. To adjust the Keeton
lower the implement name until the discs of the row units are
resting on the ground.
Keeton
The optional Keeton
®
Seed Firmer Adjustment
®
Seed Firmer is an engineered
polymer shape that slides down the seed trench. It traps
seeds as they exit the seed tube and firms them into the
bottom of the “V”.
Refer to Figure 107
The Firmer is provided with a preset tension which is
recommended for using the first year. Tension screws
can be tightened in subsequent years according to your
needs. Firmers should provide just enough tension to
push seeds to the bottom of the trench.
Seed-Lok
Optional Seed-Lok
®
Seed Firmer Lock-Up
®
firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky
conditions the wheels may accumulate soil. To avoid
problems associated with this, lock-up the firmers.
Refer to Figure 108 (which depicts a row unit with
discs, side depth wheels/arms and press wheels
removed for illustrative purposes - removal is not
necessary for lock/unlock)
To lock up Seed-Lok
®
wheels:
1. Raise implement name. Insert lift assist cylinder
locks.
2. Lift Seed-Lok
free to rotate.
3. Rotate lever stop to side/idle position . Release
lock-up handle .
4. Push up on Seed-Lok
®
lock-up handle until lever stop is
®
wheel until wheel arm
latches up .
To release a locked-up Seed-Lok
1. Insert a
handle . Alternatively, lift up on the wheel .
2. Rotate the handle clockwise (handle arm up) until
the Seed-Lok
1
/4inch tool drive tip in the tool hole of the
®
wheel releases at the latch point
®
:
and falls free.
®
Seed Firmer,
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YP4025A-48TR20 Table of Contents Index Adjustments 93
2
2
Higher press wheel down pressures reduce the down
force on the main row unit shank components, such as
the openers. High press wheel settings may require an
increase in overall row unit down force. See page 79.
Figure 109
Press Wheel Adjustments
25118
1
3
2
1
1
Figure 110
Press Wheel Force & Stagger
22907
1
8
7
6
5
3
4
2
4568782
3. While holding the handle up, rotate the raised portion of the lever stop under both sides of the handle at the
arm end. Remove the tool.
Press Wheel Adjustment
The press wheels close the furrow which gently presses
the soil over the seed to ensure good seed-to-soil
contact for even emergence.
To provide consistent seed firming, the press wheels are
free to move downward from their normal operating
position. This system maintains closing/pressing action
even if the row unit arm is lifted when the discs
encounter obstructions.
There are three adjustments available on the press
wheel assembly:
Refer to Figure 109
1. Down pressure (shown at maximum)
2. Wheel stagger (shown staggered)
3. Centering (see Figure 111 on page 94)
Press Wheel Down Pressure
The handle sets down pressure, which may need
adjustment for different soil types and field conditions.
• Relax the handle forward (in the direction of travel)
for decreased down pressure.
• Pull the handle back for increased down pressure.
Higher press wheel down pressures reduce the down
force on the main row unit shank components, such
as the openers. High press wheel settings may
require an increase in overall row unit down force.
See page 79.
Press Wheel Stagger
The factory stagger setting has been found optimal for
residue flow. If your conditions appear to require even
press wheels, you might try one row before
re-configuring the entire implement name. To change the
stagger:
Refer to Figure 110
1. Raise the implement name and install the lift assist
cylinder locks. See “Lift Cylinder Lock-Up” on
page 30.
2. Remove the bolt , nut and lock-washer for
the left press wheel .
3. Move the spacer and wheel to the forward of
the two mounting holes at .
4. Re-install the bolt, lock washer and nut. Tighten.
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YP4025A-48TR20 Table of Contents Index Adjustments 94
Figure 111
Press Wheel Centering
(View from beneath opener)
25277
3
2
1
4
1
23432
3
Press Wheel Centering
If one press wheel is running in the seed trench, or the
wheels are not centered over the trench, the angle of
the press wheel assembly can be adjusted as follows:
Refer to Figure 111
1. Determine how far, and in which direction, the press
wheel assembly needs to move to center the wheels.
2. Raise implement name and install lift assist cylinder
locks. See “Lift Cylinder Lock-Up” on page 30.
3. Loosen the
Do not loosen the square-head bolts forward of the
hex-head bolts.
4. Turn the hex head cam under the forward hex
head jam bolt , and move the required amount.
5. Tighten both hex head bolts and .
If press wheel adjustments do not provide satisfactory
furrow closing, your conditions may require alternate
press wheels. A variety of wheel assemblies are
available. Consult your Great Plains dealer.
1
/2inch hex-head bolts and .
2019-03-19 Table of Contents Index 411-198M
Page 99
YP4025A-48TR20 Table of Contents Index 95
For seed monitor issues, see also the DICKEY-john®
Planter/Drill Control User Manuals,
“TROUBLESHOOTING & ALARMS” section.
Suggested Furrow Check:
Plant a short distance and dig seeds, or run with the
closing wheels wired up to leave an open seed trench.
Based on seeds found, determine an average distance
between seeds. Compare the distance between seeds
to the seed spacing listed in the charts for your
population. This is listed as “inches per seed”.
Troubleshooting
Planting Rate Problems
When starting up with a new implement name, a new
crop or a new population it is important to physically
double check what the monitor is reporting in the cab by
digging seeds. This is to verify that you are set up
correctly to plant the desired population. Do not rely
solely on the population reported by the DICKEY-john
monitor.
Also during start up it is common to encounter alarms
and readouts on the DICKEY-john
®
console that don’t
seem to make sense. It is critical to troubleshoot these
alarms not only to make sure the implement name drive
is set properly to hit the target population, but also to fix
incorrect entries in the DICKEY-john
®
monitor to
eliminate nuisance alarms.
Before entering the troubleshooting charts to remedy a
monitor or population problem, it is helpful to use the
following flowchart to get a handle on what may be
wrong. The basis for finding what is wrong comes from
knowing exactly what the implement name is actually
doing in the soil. Always dig or observe seed on the ground when checking populations.
®
1. Is the spacing on the
ground correct?
2. Is the reported population
1
/2the actual or is the
reported population too
high by a factor of 2?
No:
Yes: Go to step 2.
No:
Yes:
Check the ground drive transmission and range sprocket selections, or the
population settings on a hydraulic drive unit. See also “Population Too Low” or
“Population Too High” in the troubleshooting charts.
Go to step 3.
An incorrect row spacing value entered in the seed monitor can cause
this. Example: 15 inches instead of 30 inches. Correct the row spacing
error on the DICKEY-john
The system can also be off by a large factor if incorrect range sprockets
are installed. Check seed rate charts against range and transmission
sprockets on the implement name.
3. Is the population on the
screen close to the target
population?
No:
Yes:
Check seed rate charts against transmission sprockets selected. See
“Population Too Low” or “Population Too High” in the troubleshooting charts.
If slightly under, see “Population Too Low” if slightly over, see “Population
Too High”.
®
console.
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YP4025A-48TR20 Table of Contents Index Troubleshooting 96
.eps
100%
Figure 112
Rear Cross-Section of Air-Pro
®
Meter in Normal and Row-Failed Conditions
29743
Normal:2
Filling
Normal:
Filled
Delivery Blockage or
Back-flow Starvation
Bridging:
Screen
Bridging:
Shutter
Seed pool at shutter
prevents back-flow of
meter pressurization
air, allowing seed to
flow from delivery
system, filling inlet to
top of air release
screen.
Once inlet is filled to
top of air release
screen, air flow from
the delivery system
is blocked. No
further seed arrives
until planting
reduces the backlog
at the inlet.
No seed arriving from
manifold. Air back-flow
is occurring. Causes may
include:
• low fan speed
• seed hose blockage
• no seed available
• Y-tube closed
• meter never primed
Oversize matter in seed
has caused a bridge at
the top of the inlet. Air
back-flow is
occurring.
When the bridge is
released, the seed pool
will be insufficient to
prevent back-flow.
A bridge at the
shutter is blocking
flow. Causes may
include:
• oversize seed
• shutter setting
too low
• oversize matter
in seed
Actions: Actions: Actions: Actions: Actions:
No action required.
Continue Planting.
No action required.
Continue Planting.
1. Correct cause of
blockage.
2. Perform a one-row
seed pool recovery
(page 97).
3. Resume planting.
1. Close shutter.
2. Disconnect hose at
meter.
3. Tap on screen cone
and inspect.
4. Check seed pool for
foreign matter.
5. Perform a one-row
seed pool recovery
(page 97).
6. Resume planting.
1. If shutter was at
suggested
opening,
increase one
notch.
2. Check seed
pool for foreign
matter.
3. Resume
planting.
1
1
1
Seed Pool Troubleshooting
2019-03-19 Table of Contents Index 411-198M
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