Page 1
Table of Contents Index
40 Foot 3-Section Yield-Pro®Planter
Operator Manual
YP4025A
®
with Air-Pro
Manufacturing, Inc.
www.greatplainsmfg.com
Seed Meters
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!
29817
Illustrations may show optional equipment not supplied with standard unit or may
depict similar models where a topic is identical.
ORIGINAL INSTRUCTIONS
© Copyright 2013 Printed 2013-04-24 401-627M
Table of Contents Index
EN
Page 2
Table of Contents Index
Table of Contents Index
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Great Plains Manufacturing, Inc. Cover Index iii
Table of Contents
Important Safety Information ......................................1
Safety Decals .................................................................6
Introduction ................................................................13
Models Covered ...........................................................13
Description of Unit ........................................................13
Intended Usage ........................................................13
Document Family......................................................13
Using This Manual........................................................14
Definitions................................................................. 14
Owner Assistance ........................................................14
Preparation and Setup ...............................................15
Initial Setup...................................................................15
Post-Delivery/Seasonal Setup......................................15
Pre-Planting Setup .......................................................15
Hitching Tractor to Planter............................................16
Hydraulic Hose Hookup............................................ 16
Electrical Hookup .........................................................18
Hitching with 3-Point................................................. 18
Hitching with Hydraulic Tongue (Option)..................19
Raising/Lowering Tongue......................................... 19
Parking Stands .............................................................20
Tank Cart Hitching.................................................... 21
Making Fertilizer Connections .................................. 21
Heights and Leveling....................................................22
Set Tongue Height ...................................................22
Marker Setup................................................................23
Lock Up Fertilizer Drive ................................................23
Operating Instructions...............................................24
Pre-Start Checklist .......................................................24
Fold/Unfold Lock Overview ..........................................24
Unfolding the YP4025A Planter....................................25
Raising/Lowering Planter .............................................27
Raising Planter .........................................................28
Lowering Planter ......................................................28
Lift Cylinder Lock-Up ................................................ 29
Re-Phasing Lift System............................................29
Local Float on Hydraulic Tongue.............................. 29
Folding the YP4025A Planter .......................................30
Re-phasing Fold System .......................................... 32
Transporting the Planter...............................................33
Typical YP4025A Planter Weights............................34
Transport Checklist...................................................34
Loading Materials .........................................................35
Walkboard and Ladder .............................................35
Auxiliary Hydraulics.................................................. 36
82bu Hopper Operation............................................ 37
150bu Hopper Operation.......................................... 38
Changing the Seed Box or Hopper .......................... 39
Refuge Hopper Operation ....................................... 41
Air System Operation................................................... 42
Air System Overview................................................ 43
Fan Circuit Operation ........................................... 44
Fan General Operating Information ..................... 45
Recommended Fan Speeds ................................ 45
Y-Tubes.................................................................... 46
Airbox Operation ...................................................... 46
Monitor Operation ........................................................ 46
Electric Clutch Operation ............................................. 47
Electric Clutch Lock-Up............................................ 47
Air-Pro® Meter Operation............................................. 48
Meter Operation ....................................................... 48
Fertilizer Tanks (Option)........................................... 49
Trailer Operations ........................................................ 50
Field Set-Up Checklists................................................ 51
Caster Locks - Field Operations............................... 52
Field Operation ............................................................ 53
Marker Unfolding.......................................................... 54
Marker Unfold (one side).......................................... 54
Row Marker Operation ............................................. 55
Folding the Markers ................................................. 55
Unusual Marker Operations ..................................... 55
Monitor Operation ........................................................ 55
Planting ........................................................................ 55
Checking Planting Rate ............................................... 55
Short-Term Parking...................................................... 56
Long-Term Storage...................................................... 57
Storage: Fertilizer Option ......................................... 57
Adjustments ............................................................... 58
Setting Material Rates.................................................. 59
Planting Rate............................................................ 59
Fertilizer Rate...........................................................59
Height Switch Adjustment ............................................ 60
Marker Adjustments ..................................................... 62
Marker Disk Adjustment ........................................... 62
Fan and Adjustment..................................................... 63
Furrow Check:...................................................... 64
Fine-Tuning ............................................................. 65
Seed Delivery Fan Adjustments............................... 65
Liquid Fertilizer Adjustments........................................ 66
© Copyright 2009, 2010, 2011, 2012, 2013 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.
2013-04-24 Cover Index 401-627M
Trademarks of Great Plains Manufacturing, Inc. include: Singulator Plus, Swath Command, Terra-Tine.
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, Ver ti-Till, Whirlfilter, Yield-Pro.
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
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iv YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Ground Drive Pump ................................................. 67
Liquid Fertilizer Strainer(s) ................................... 67
Fertilizer Relief Valve ............................................... 68
Fertilizer Orifice Plates............................................. 68
Frame-Mounted Row Accessories............................... 69
Terra-Tine™ Adjustments........................................ 69
Frame-Mounted Coulter Adjustments ...................... 70
Vantage I Fertilizer Adjustments .............................. 70
25 Series Row Unit Adjustments ................................. 71
Row Unit Down Pressure......................................... 72
Adjusting Down-Force.......................................... 72
Unit-Mount Cleaner Adjustments ............................. 74
Coulter Adjustments................................................. 75
Coulter Depth Adjustment .................................... 75
Coulter Row Alignment ........................................ 76
Row-Unit Opener Disk Adjustments......................... 77
Setting Planting Depth ......................................... 77
Opener Disc Contact Region ............................... 77
Adjusting Disc Contact ......................................... 77
Side Gauge Wheel Adjustment................................ 78
Adjusting Gauge Wheel Scrapers ........................ 79
Seed Meter Setup and Adjustment .......................... 80
Meter Rain Cover ................................................. 80
Seed Inlet Shutter Adjustment ............................. 80
Optimal Seed Pool Slopes ................................... 81
Meter Re-Fill......................................................... 81
Air-Pro® Meter Disk Installation ............................... 82
Removing a Seed Disk......................................... 83
Sprocket Indexing (Stagger) ................................ 83
Row Unit Shut-Off .................................................... 84
Seed Firmer Adjustments ........................................ 86
Keeton Seed Firmer Adjustment .......................... 86
Seed-Lok® Seed Firmer Lock-Up ........................ 86
Press Wheel Adjustment.......................................... 87
Press Wheel Down Pressure ............................... 87
Press Wheel Stagger ........................................... 87
Press Wheel Centering ........................................ 88
Troubleshooting......................................................... 89
Planting Rate Problems ............................................... 89
Suggested Furrow Check:.................................... 89
Seed Pool Troubleshooting.......................................... 90
Seed Pool Recovery ................................................ 91
Population Troubleshooting Charts.............................. 91
Maintenance and Lubrication ................................. 100
Maintenance .............................................................. 100
Material Clean-Out..................................................... 101
Air Box Clean-Out .................................................. 101
Air System Clean-Out ............................................ 101
Meter Clean-Out .................................................... 102
Funnel Conversion..............................................102
Alternate Meter Clean-Out..................................103
Seed Tube Clean-Out.........................................103
Meter Brush Maintenance ..........................................104
Meter Brush Replacement ......................................105
Seed Disk Maintenance..........................................106
Cleaning and Storing Seed Disks .......................106
Hydraulic Maintenance ...............................................107
Hydraulic Drive Maintenance..................................107
Bleeding Hydraulics....................................................108
Marker Maintenance...................................................110
Marker Cylinder Bleeding .......................................110
Marker Shear Bolt Replacement.............................110
Marker Grease Seal Cap ........................................110
Wing Leveling .............................................................111
Chain Maintenance.....................................................114
Meter Drive Chain...................................................114
Spreaders and Scrapers.............................................115
Row-Unit Side Wheels................................................115
Seed Flap Replacement (s/n B1009K+) .....................116
Seed Flap Replacement (s/n B1008K-) .....................116
Fertilizer System Maintenance ...................................117
Liquid Fertilizer Strainer..........................................117
Lubrication ..................................................................118
Seed Lubricant........................................................129
Options ......................................................................130
Appendix A - Reference Information ......................145
Specifications and Capacities.....................................145
YP4025A North America Models ............................145
YP4025A Export Models.........................................146
Torque Values Chart ..................................................147
Tire Inflation Chart ......................................................147
Hydraulic Diagrams ....................................................148
Chain Routing.............................................................154
Seed Hose Routing ....................................................159
Appendix B - Initial and Option Setup ....................165
Pre-Delivery Items ......................................................165
Initial Setup.................................................................166
Marker Extension....................................................167
Hopper Level Sensor Installation............................168
Radar Calibration....................................................168
Option Installation ...................................................169
YP4025A-3215 3-Point Hitch..............................169
122-278S Scraper Installation ............................170
Appendix C - Row Pro..............................................171
Warranty .....................................................................178
Index ..........................................................................179
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Great Plains Manufacturing, Inc. 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”onpage6,
thoroughly.
▲ Read all instructions noted on the decals.
▲ Keep decals clean. Replace damaged, faded and illegible
decals.
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2 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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.
▲ 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.
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.
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 3
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.
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4 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Transport Machinery Safely
Maximum transport speed for implement is 20 mph (32
kph), 13 mph (22 kph) in turns. 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 planter 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 145.
▲ Do not fold or unfold the planter while the tractor is moving
Shutdown and Storage
▲ Lower planter, put tractor in park, turn off engine, and
remove the key.
▲ Secure planter using blocks and supports provided.
▲ Detach and store planter in an area where children
normally do not play.
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Great Plains Manufacturing, Inc. 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 planter, 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 planter to cool completely.
▲ Disconnect battery ground cable (-) before servicing or
adjusting electrical systems or before welding on planter.
▲ 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 planter 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 planter functions.
▲ Operate machinery from the driver’s seat only.
▲ Do not leave planter unattended with tractor engine
running.
▲ Do not stand between the tractor and planter 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
planter. Make sure all persons are clear of working area.
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6 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 cor-
responding safety decals.
818-055C
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.
Slow Moving Vehicle Reflector
On the back of the walkboard platform;
1 total
838-266C
Red Reflectors
On rear face of axle (below Daytime reflectors);
two total
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 7
838-267C
Daytime Reflectors
On rear face of axle (above Red reflectors);
two total
29164
838-265C
Amber Reflectors
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.
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8 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
818-557C
Danger (in Spanish):
Advising non-English readers to seek translation
On side of tongue; one total
29164
818-590C
Danger: Crushing Hazard
Top center of 3-point hitch; one total
(not present with hydraulic tongue option)
838-599C
Danger: Electrocution Hazard
One each side of marker upright arm, each side;
four total
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 9
818-045C
Warning: Pinch/Crush
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
818-188C
WARNING
EXCESSIVE SPEED HAZARD
To Prevent Serious Injury or Death:
Do Not exceed 20 mph maximum transport
speed. Loss of vehicle control and/or machine
can result.
Warning: Speed
On front of center section, one total
818-188C Rev. C
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10 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
818-579C
Warning: Pinch/Shear Hazard
Front and rear faces of inner marker arms;
four total
29164
818-580C
Warning: Overhead Marker
Front and rear faces of inner marker arms;
four total
838-094C
Warning: High Pressure Fluid
On side of tongue at hitch;
one total
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 11
818-351C
Caution: Transport Locks
Hitch tongue; one total
29164
818-398C
Caution: Tires Not A Step
One front face each wing gauge wheel,
One each side front center axle,
One each rear face of rear caster arms;
8 total
818-587C
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Caution: Read Operator’s Manual
On center tool bar; one total
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12 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
838-426C
Caution: Pressure and Torque
On outside rim each transport tire;
10 total
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Great Plains Manufacturing, Inc. Table of Contents Index 13
Introduction
Great Plains welcomes you to its growing family of new
product owners. The 40 Foot 3-Section Yield-Pro
Planter with Air-Pro® Seed Meters (YP4025A Planter)
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-1630 16-Row, 30in (76cm)
YP4025A-1670 16-Row, 70cm (27.5in)
YP4025A-2420 24-Row, 20in (51cm)
YP4025A-3115 31-Row, 15in (38cm)
YP4025A-3215 32-Row, 15in (38cm)
YP4025A-32TR 32-Twin Row, 30in (76cm) pairs
YP4025A-32TR70 32-Twin Row, 70cm pairs
YP4025A-4810 48-Row, 10in (25cm)
YP4025AR-4810 48-Row, 10in (25cm)
Description of Unit
The YP4025A Planter is a pull-type implement with
optional mounted or pull-behind fertilizer capability. The
YP4025A includes 25 Series openers with Air-Pro
meters supporting a wide choice of seed disks. The
planter accepts optional unit mounted and
frame-mounted row accessories. The planter folds for
transport.
®
R
Figure 1
YP4025A Planter
L
R
F
U
B
L
D
29817
_44%
Intended Usage
Use the YP4025A Planter to seed production-agriculture
crops only. It is suitable for conventional till, min-till and
moderate no-till conditions. Do not modify the planter for
use with attachments other than Great Plains options
and accessories specified for use with the YP4025A.
2013-04-24 Table of Contents Index 401-627M
Document Family
401-627M Owner’s Manual (this document)
401-627B Seed Rate Charts
401-627P Parts
DICKEY-john®IntelliAg® manuals:
110011508 Planter/Drill Control, User Level 1
110011501 Planter/Drill Control, User Level 2&3
110011538 Quick Start Guide: YP4025A-2420
110011539 Quick Start Guide: YP4025A-3115/3215
110011542 Quick Start Guide: YP4025A-32TR
110011542 Quick Start Guide YP4025A-32TR70
110011540 Quick Start Guide YP4025A-4810
11001-1126 DICKEY-john® hopper level sensor install
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14 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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.
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 YP4025A Planter model and serial number
here for quick reference:
Model Number:__________________________
Serial Number: __________________________
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.
Note: 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.
Figure 2
Serial Number Plate
R
F
U
B
L
D
31467
Your Great Plains dealer wants you to be satisfied with
your new machine. If you do not understand any part of
this manual or are not satisfied with the service received,
please take the following actions.
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.
401-627M Table of Contents Index 2013-04-24
For further assistance write to:
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5060
785-823-3276
Page 19
Great Plains Manufacturing, Inc. Table of Contents Index 15
Preparation and Setup
This section helps you prepare your tractor and
YP4025A Planter for use, and covers tasks that need to
be done seasonally, or when the tractor/planter
configuration changes.
Before using the planter in the field, you must hitch it to a
suitable tractor, inspect systems and level the planter.
Before using the planter for the first time, and periodically
thereafter, certain adjustments and calibrations are
required.
Initial Setup
See “Appendix B - Initial and Option 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 108).
• Wing leveling and alignment (page 111).
• Radar calibration (page 168).
• 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 Informa-
tion” on page 1.
❑ Check that all working parts are moving freely, bolts
are tight, and cotter pins are spread.
❑ Check that all grease fittings are in place and lubri-
cated. See “Lubrication” on page 118.
❑ Check that all safety decals and reflectors are cor-
rectly 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 Inflation Chart”
on page 147.
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16 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Hitching Tractor to Planter
Crushing Hazard:
Do not stand or place any body part between planter and moving tractor. You may be severely injured or killed by being
crushed between the tractor and planter. 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.
Current Style Color Coded Hose Handles
Color Hydraulic Function
Gray Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Black Fan
Yellow Hydraulic Drive
Refer to Figure 3
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.
Figure 3
Color Coded Hose Handles
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Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 17
Older Style Hoses with Color Ties
Great Plains hydraulic hoses are color coded. Hoses that
go to the same remote valve are marked with the same
color tie.
Color Hydraulic Function
White Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Orange Fan
Yellow Hydraulic Drive
Refer to Figure 4
To distinguish hoses on the same hydraulic circuit, refer
to hose label. The hose under an extended-cylinder
symbol feeds a cylinder base end. The hose under a
retracted-cylinder symbol feeds a cylinder rod end.
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.
Figure 4
Older Styler Hoses w/Label
27270
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
1. Attach case drain hose to low pressure drain
connection.
Note: Case drain hose has the smaller1⁄4in I.D. hose and
small, flat-face, connector.
2. Connect low pressure motor return hose to low
pressure return connector. It is distinguished by a
large (1.06in/2.7cm diameter) quick coupler.
3. Connect hydraulic hoses to tractor remotes.
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.
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18 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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. Row-Pro™ or Swath Command™ compressor
(option).
4. Mate any optional or aftermarket electrical
connectors.
Make connections prior to planter movement. Some
planter hydraulic circuits are under monitor control.
1
2
Hitching with 3-Point
Refer to Figure 6
1. If the planter is model YP4025A-3215 (“Even Row
15in”), check the configuration of the hitch offset at
“YP4025A-3215 3-Point Hitch” on page 169.
2. Connect your tractor 3-point to the planter 3-point
hitch. If using quick hitch be sure planter locks into
hitch securely.
3. 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.
Figure 5
Connector Identification
Figure 6
3-Point Hitch
3
25236
25237
29242
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Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 19
Hitching with Hydraulic Tongue (Option)
Refer to Figure 7
4. Move the tractor to near hitching position.
5. 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 16. Allow slack for hitch
movements. Close the tongue cylinder bypass valve.
6. Make electrical connections for at least the planter
control circuit (necessary to control planter hydraulic
systems). See page 18.
7. Check that hitch local bypass valve is closed.
1
Refer to Figure 8
8. Set the cab Clutch Folding Module Lift/Hitch switch
2
to Hitch.
9. 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.
10. Connect safety chain to a suitable anchor point on
the tractor.
11. Extend the Hitch/Lift circuit to raise the hydraulic
tongue just enough to relieve pressure from the
parking stand.
12. Remove and store main tongue parking stand. See
“Store Main Parking Stand” on page 20.
Local Float on Hydraulic Tongue
Refer to Figure 7
OPEN
1
CLOSED
Figure 7
Hitching with Hydraulic Tongue
(Bypass Valve Closed)
Figure 8
Clutch Folding Module (Hitch)
28477
2
26033
Equipment Damage Risk:
The hydraulic tongue must be in Float during planter moves.
If it is necessary to move the planter without first
connecting it to a tractor that has a float-capable circuit
for the hydraulic tongue, open the bypass valve on the
1
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 planter tongue is
raised and lowered by raising and lowering the 3-point.
With the optional hydraulic tongue, the planter tongue is
raised by extending the hitch cylinder, and lowered by
retracting the hitch cylinder.
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20 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Parking Stands
3
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:
6
1 2
3
4
5
Figure 9
Main Parking Stand Stored
4
2
1
29242
• Remove the top pin , swing the stand out, up and
vertical around the bottom pin , and re-insert the top
7
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.
5
5
7 6
8
8
9
7
98
6
Figure 10
Storing 3-Point Stands
6
26034
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Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 21
Tank Cart Hitching
If using a fertilizer cart, consult the cart manual for:
• hitching cart tongue to planter
• connecting pump control electronics to planter
• connecting fertilizer feed hoses to planter
Complete the tractor-planter 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
2
3
2-section, planter manifold and pump:
Starter inlet only
3-section, cart manifold and pump:
Left, Center, Right inlets & Gauge line
Description
L
R
C
Figure 11
Fertilizer Cart Connections
G
S
29269
Making Fertilizer Connections
PFC2000 tank cart, YP4025A Planter with Type 2 and Type 3 Manifolds, & Ground Drive Pump
Planter Inlet
L
Left Type 3 Center Type 3 Right Type 3 Type 2
PFC1600 or PFC2000 tank cart, YP4025A Planter with Type 3 Manifold (only)
Planter Inlet
L
Left Type 3 Center Type 3 Right Type 3
a. Gauge Line is supplied with PFC1600 or PFC2000 tank cart
C
C
R
R
S
G
Gauge Line
G
Gauge Line
a
a
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22 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 planter 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 29
2. Complete “Bleeding Hydraulics” on page 108.
3. Unfold the planter fully (page 25).
Set Tongue Height
Planter 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.
Note: 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.
Note: Level frame in planting conditions.
Failure to do so may result in implement not
producing desired results.
41.5in
(105.4cm)
Figure 12
Initial Tongue Height
25316
Checking Planter Height
The planter is designed to operate with all sections of the
main tool bar nominally 26in (66cm) above the planting
surface. The height of the center section is not routinely
adjustable. Set planting depth with row unit adjustments.
When lowering the planter 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 planter to field position (with openers into ground)
and set hitch height before making side-to-side adjustments.
4. Check tool bar height across planter. See page 111
for further detail and adjustment.
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Figure 13
Center Level Check
29276
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Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 23
Marker Setup
Prior to first use, check and adjust:
•“Dual Marker Speed Adjustment” on page 166.
Prior to first use, and whenever changing row spacings,
set or reset:
•“Marker Extension” on page 167.
Prior to each planting session, check and adjust:
•“Marker Disk Adjustment” on page 62.
Lock Up Fertilizer Drive
YP4025A serial number B1026H+
5
Loss of Control and Sharp Object/Crushing Hazards:
Do not lift or lower wheel by spoke or rim; use handle only.
Keep feet out from under wheel. 90 pounds (41 kg.) force is
required to lift wheel. If you lose your grip before pinning, or
after unpinning, the arm snaps down rapidly. The traction
teeth and the force of the wheel impact can inflict serious
injury.
The liquid fertilizer option uses a piston pump driven by a
ground contact wheel. When not using the fertilizer drive,
preserve the pump by locking up the ground wheel. On
older models remove the chain.
Note: Do not operate planter pump when not applying
material.
Refer to Figure 14
For YP4025A planters:
5. Remove clevis pin from storage hole .
6. Release the lock arm , lift handle to lift ground
wheel up to position it in-between lock arm.
7. Secure with pin clevis and cotter pin.
5 7
6
4
7
Figure 14
Locked Up Fertilizer Drive
4
6
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24 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 planter to the field.
❑ Carefully read “Important Safety Information” on
page 1.
❑ Install seed disks appropriate for crop. See
“Air-Pro® Meter Disk Installation” on page 82.
❑ Lubricate planter as indicated under “Lubrication”
on page 118.
❑ Check all tires for proper inflation. See “Tire Infla-
tion Chart” on page 147.
❑ Check all bolts, pins, and fasteners. Torque as
shown in “Torque Values Chart” on page 147.
❑ Check planter 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.
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.
Fold/Unfold Lock Overview
The YP4025A planter 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 26.
2. Lift cylinder lock channels: These are
operator-installed on a raised plater, these prevent
lowering in transport or when parked. See page 29.
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 148.
4. Tongue lock: This engages automatically at unfold,
and lock the tongue/draw bar geometry for field
operations. See page 26.
5. Caster pivot locks: operator-engaged after unfold,
these prevent caster swiveling in the field, which aids
in tracking across hillsides. See page 31.
3
3
2
3
4
1
1
2
2
5
Figure 15
Fold/Unfold/Lift Locking Features
29855
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 25
Unfolding the YP4025A Planter
The distance between the tractor and the seed structure
decreases by 12 ft (3.7m) during unfolding. Planter,
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 planter is likely to result in
tractor movement.
▲ Do not allow anyone to be on or near the planter 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 planter. The seed structure usually
moves forward during unfolding.
▲ Do not unfold with planter 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 16
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 planter is lowered, raise mainframe (See
“Raising/Lowering Planter” on page 27).
4. If equipped with hydraulic hitch, the CFM Lift/Hitch
switch must be set to Hitch.
Refer to Figure 29
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 planter to release load on lock plates to allow
them to come open.
Refer to Figure 16
6. Set CFM Marker/Fold switch to Fold. LED above
switch blinks continuously.
5
6 7
1 2
3
4
1
2
Figure 16
Clutch Folding Module
6
Figure 17
Caster Unlocked
3
4
5
26111
7
29306
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26 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Unfolding, Continued ...
7. Raise tractor 3-point hitch or extend (raise) planter
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
4
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 20
8
8
Figure 18
8
29243
Unfold: Wings Locked
9
Machine Damage Risk:
Do not operate planter 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 29).
13. Set hitch height to planting position
(“Raising/Lowering Tongue” on page 19).
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.
Figure 19
Planter Unfolding
9
Figure 20
Tongue Lock Engaged
29279
29334
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 27
Raising/Lowering Planter
Refer to Figure 21
Planter raising/lowering relies on the four lift cylinders
at the mainframe and wing end gauge wheels.
The planter must be raised for folding and unfolding.
The planter will not lower if transport locks are installed.
See “Lift Cylinder Lock-Up” on page 29.
Note: 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 planter while folded without using the special
procedure on page 29 (this is a hydraulic hitch restriction planter may be lowered while folded with standard 3-point
hitch).
3
1
Figure 21
Clutch Folding Module
26113
Machine Damage Risk:
Do not lower while any planter folding operations are
underway or partially complete, with either hitch.
Machine Damage Risk:
Always raise the planter for any reverse/backing operations.
Figure 22
Planter Raised
Figure 23
Planter Lowered
29280
29281
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28 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Raising Planter
Refer to Figure 24
1. If the planter has hydraulic hitch, set the Lift/Hitch
switch to LIFT.
Note: If the planter has the standard 3-point hitch, this
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 planter.
Do Not Set for Continuous Mode.
For transport, maintenance or storage, install lift cylinder
locks. See “Lift Cylinder Lock-Up” on page 29.
1
switch has no function. The hydraulic circuit is
always in Lift (Raise/Lower) mode.
Pinch/Crush Risk:
Keep all personnel clear of center section and seed cart while
raising tool bar. The wheels move inward.
1
Lowering Planter
Refer to Figure 25
1. If lift cylinder locks are installed, first fully raise the
planter, and remove the locks. See “Raising
Planter” on page 28 and “Lift Cylinder Lock-Up”on
page 29.
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 planter 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 29). A planter
with a 3-point hitch may be lowered while folded.
Machine Damage Risk:
Never lower planter while partially unfolded (with either
hitch). Wing row units can strike main transport wheels.
1
Figure 24
CFM: Raising Planter
Crushing Risk:
Keep all personnel clear of center section and seed cart while
raising tool bar. The wheels move outward.
26113
1
Figure 25
CFM: Lowering Planter
26113
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 29
Lift Cylinder Lock-Up
When moving the raised planter 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 26
1. If planter is folded, confirm hitch is in Float.
If planter is unfolded, hitch may be in any
configuration.
2. Raise the planter mainframe. See
“Raising/Lowering Planter” on page 27.
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.
1
2
2
2
1
1
Figure 26
Lift Cylinder Locks Installed
29283
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 YP4025A
Planter.
Every 8- to 10 passes, or if lifting is uneven, re-phase the
cylinders with this procedure:
1. Raise the planter completely, and hold the hydraulic
lever or switch in Extend for several seconds after
the planter 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 planter
1
⁄2inch (13mm).
Local Float on Hydraulic Tongue
A hydraulic hitch planter may be raised or lowered while
folded using the local float valve.
1. Float hitch circuit before lowering while folded.
Float hitch circuit before rasing 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.
1
Figure 27
Local Float on Hydraulic Tongue
Crushing Hazard:
Tongue or planter 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.
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30 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Folding the YP4025A Planter
Fold the YP4025A planter for moves between fields and
over public roads, and for storage. The distance between
the tractor and the seed structure increases by 12 feet
(3.7m) during folding. Planter, 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 planter is likely
to result in tractor movement.
▲ Do not allow anyone to be on or near the planter 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 planter. The seed structure moves
backward during folding.
▲ Do not fold with planter 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 28
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 planter mainframe (see “Raising/Lowering
Planter” on page 27). Do not raise (hydraulic) hitch
at this point.
4. Install lift cylinder locks (see “Lift Cylinder Lock-Up”
on page 29).
401-627M Table of Contents Index 2013-04-24
1 2
3
1
2
Figure 28
CFM: Wing Folding
4
3
26033
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 31
Refer to Figure 29
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 planter forward or back
a short distance until both locks unlock.
Refer to Figure 28
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 20 on
page 26). Before folding completes ...
8
6
6
7
7
4
5
6
7
8
9. Raise planter tongue (“Raising/Lowering Tongue”
on page 19). This must be done before folding
completes.
Note: 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 planter, raise
tongue, and refold.
Refer to Figure 29
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).
6
Figure 29
Caster Unlocked
Figure 30
Fold Commencing
5
6
29306
29282
6
Transport Hazard:
Wing locks must be engaged for safe transport, and planter
tongue must be lowered to keep wings locked.
Hydraulic tongue, if installed, must be in Float.
2013-04-24 Table of Contents Index 401-627M
5
Figure 31
Wings Locked
5
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32 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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.
Every few planting days, re-phase the cylinders with this
procedure:
1. Raise, unfold and fold the planter completely, and
hold the fold hydraulic lever or switch in Extend for
several seconds after the planter 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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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 33
Transporting the Planter
Loss of Control Hazard:
Ensure that the towing vehicle is adequate for the task. Using
an inadequate tow vehicle is extremely unsafe, and can result
in loss of control, serious injury and death.
The planter can weigh up to 45,000 pounds (20400 kg),
depending on configuration and seed load. A tank cart hitched
to the planter (“in train”) adds another 5,000 pounds
(2268kg) 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 planter and cart.
Do not tow if planter exceeds the load rating of the vehicle.
Loss of Control Hazard:
A tank cart in train must be EMPTY. A full tank cart weighs
nearly 30,000 pounds (13608kg), and, when hitched to the
planter, represents an unsafe highway load regardless of the
rating of the towing vehicle. If a cart must be transported
loaded, tow it separately.
29284
Check Bridge Loads: A loaded planter, or a planter with cart
in tow, can exceed the load ratings of bridges you must cross.
Loss of Control Hazard:
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,
and major planter/tractor damage.
Braking and Loss of Control Hazard:
Do not exceed 20 mph when driving straight.
Loss of Control Hazard:
Do not exceed 13 mph (22 kph) in turns. The YP4025A Planter
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 planter 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 kph) in reverse.
Never back up with the planter lowered or with a pull-type
fertilizer tank hitched to the planter.
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34 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Typical YP4025A Planter Weights
All configurations include:
Markers, UMCs (UnitMounted Coulters), and
a Hopper (bu varies)
Base Model, Empty 28500 lbs 12900 kg 30300 lbs 13700 kg 34000 lbs 15400 kg 24500 lbs 11100 kg
Base Model + Material Load 33500 lbs 15200 kg 40000 lbs 18100 kg 43000 lbs 19500 kg 29500 lbs 13400 kg
Add for PFC2000, Empty 5000 lbs 2300 kg 5000 lbs 2300 kg 5000 lbs 2300 kg 5000 lbs 2300 kg
Planter with Cart
Planter and Cart Empty 33500 lbs 15200 kg 35300 lbs 16000 kg 39000 lbs 17700 kg 29500 lbs 13400 kg
Planter and Cart, Full* 62500 lbs 28300 kg 69000 lbs 31300 kg 72000 lbs 32600 kg 58500 lbs 26500 kg
* Figures included only to emphasize the hazard. Never tow a loaded tank cart hitched to a planter.
YP4025A-32TR
82bu Hopper
YP4025A-32TR
Single RC, 82bu,
400gal Fertilizer
YP4025A-4810
Single RC,
150bu Hopper
YP4025A-1630
82bu Hopper
Transport Checklist
❑ Plan the route. If towing a cart hitched to the planter,
plan the route so that no reverse movements will be
necessary. Avoid steep hills. Keep Clearances in
mind. Folded, your YP4025A Planter may be nearly
15 feet (4.6m) wide and 13 feet (4m) high.
❑ Hitch.
Make both electrical and hydraulic connections. See
“Hitching Tractor to Planter” on page 16.
❑ If markers are unfolded, fold them.
See “Folding the Markers” on page 55.
❑ Raise planter.
See “Raising/Lowering Planter” on page 27
❑ Install lock-up channels on lift cylinders.
See “Lift Cylinder Lock-Up” on page 29.
❑ Disengage caster locks. See page 31.
❑ Fold and latch lower ladder section. See page 35.
❑ If planter wings are unfolded, fold them.
See “Folding the YP4025A Planter” on page 30.
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.
Note: The figures in the table above represent a limited
number of configurations. The weight of your
planter 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 planter to a scale and get a precise weight.
Steering
Never exceed 13 mph (22 kph) in turns. The YP4025A
Planter 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 planter or
cart.
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 35
Loading Materials
1
Walkboard and Ladder
Walkboard pin and pivot operation is covered on
page 39.
Refer to Figure 32
The bottom two steps of the walkboard ladder is a
swing-down section. To release it, pull the spring-loaded
2
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.
1
2
Machine Damage Risk:
Ladder steps must be locked up before lowering planter or
machine damage will occur.
Refer to Figure 32
A tool is pinned to the bottom of the walkboard. it is
easier to remove and replace this tool with the planter
lowered.
The wrench end fits the nut weldment of the spring force
cam (page 73).
Refer to Figure 34
As necessary for auger clearance, open walkboard top
railing. At each side, pull cross-pins out and make
1
toward hopper.
3
1
⁄4turn. Release pin into shallow detents. Swing railing
Figure 32
Walkboard Lower Ladder
Figure 33
Walkboard Tool Location
1
29321
3
29322
1
Figure 34:
Walkboard Swing-Down Rail
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36 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Auxiliary Hydraulics
Refer to Figure 35, Figure 36 and Figure 37
The YP4025A planter 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).
Note: If markers are not installed, the Aux/Marker circuit
is always in Aux mode.
Operating Auxiliary Hydraulics
The planter 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).
5 4
1
2
3
CFM: Auxiliary Operations
1
Figure 35
Auxiliary Hydraulic Ports
2
Figure 36
29269
26122
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 .
3 5
4
5
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.
401-627M Table of Contents Index 2013-04-24
3
Figure 37
Auxiliary Hydraulic Valve
26048
Page 41
Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 37
82bu Hopper Operation
Tipping Hazard:
Load an 82 bu hopper only when mounted on the cart. A full
hopper can weigh over 5,500 lbs (2500 kg), which is above the
lifting and balance capability of most tractors and farm forklifts.
Note: Fork lift height capability required is:
Planter lowered: 4ft 25⁄8in (129 cm)
Planter raised: 6ft 57⁄8in (198 cm)
Note: 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 168.
Adding Seed to 82bu 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. Add1⁄2cup
(120ml) 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 82bu hopper is not yet on the planter, dismount
any box or hopper present, and mount the empty
82bu hopper. See “Changing the Seed Box or
Hopper” on page 39.
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.
Approximate capacity of 82bu bulk seed hopper,
in bushels, at 10in increments.
Figure 38
22958
82 bu Hopper Capacities (bu)
If loading with a hydraulic auger, see “Auxiliary
Hydraulics” on page 36. Lower walkboard railing as
necessary.
System Plugging Risk:
Entanglement, Chemical and Falling Hazards:
Do not use liquid seed treatments.
Observe all safety precautions for material handling and use
of loading equipment (particularly augers).
Note: Auger height capability required is:
ProBox, planter lowered: 8ft 91⁄2in (2.68m)
ProBox, planter raised: 11ft3⁄4in (3.37m)
82bu hopper, planter lowered: 9ft1⁄4in (2.75m)
82bu hopper, planter raised: 11ft 31⁄2in (3.44m)
7. Add seed, mixing in lubricant continuously or per bag.
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38 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
150bu Hopper Operation
Tipping Hazard:
Load a 150 bu hopper only when mounted on the cart. A full
hopper can weigh over 10,000 lbs (4500 kg), which is above
the lifting and balance capability of most tractors and farm
forklifts.
Note: The 150bu 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.
Note: Fork lift height capability required is:
Planter lowered: 4ft 25⁄8in (129 cm)
Planter raised: 6ft 57⁄8in (198 cm)
Note: 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 168.
Adding Seed to 150bu 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
(240ml) of lubricant to the pail. Mix and pour into air
box before mounting hopper.
Approximate capacity of 150bu bulk seed
hopper, in bushels, at 10in increments.
Figure 39
150 bu Hopper Capacities (bu)
22959
2. Put tractor in Park.
3. Turn off seed box fan.
4. If the 150bu hopper is not yet on the planter,
dismount any box or hopper present, and mount the
empty 150bu hopper. See “Changing the Seed Box
or Hopper” on page 39.
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.
If loading with a hydraulic auger, see “Auxiliary
Hydraulics” on page 36. Lower walkboard railing as
necessary.
Note: Auger height capability required is:
ProBox, planter lowered: 8ft 91⁄2in (2.68m)
ProBox, planter raised: 11ft3⁄4in (3.37m)
150bu hopper, planter lowered: 9ft 61⁄4in (2.9m)
150bu hopper, planter raised: 11ft 91⁄2in (3.59m)
7. Add seed, mixing in lubricant continuously or per
bag.
Entanglement, Chemical and Falling Hazards:
Observe all safety precautions for material handling and use
of loading equipment (particularly augers).
System Plugging Risk:
Do not use liquid seed treatments.
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 39
Changing the Seed Box or Hopper
Note: The YP4025A planter accepts the Great Plains
82bu hopper,150bu
a
hopper, or bulk seed boxes
that meet the PioneerbProBox® specification.
Tipping and Overload Hazard:
Place or remove a hopper only when empty. A full hopper can
weigh between 5,000 and 10,000 lbs (2700-4500 kg), which is
above the lifting and balance capability of most tractors and
farm forklifts.
1. Move the planter 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 40
3. Disconnect hopper level sensor (if installed).
4. Remove the pin securing the left end of the
2
walkboard to the ladder assembly.
5. Swing the walkboard open, and secure it at full open
with the keeper .
3
6. Raise the planter. This causes the rear transport
wheels to move forward, providing closer access for
the lifter.
7. Back up the planter about three feet (1m). 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 41
11. Remove the two pins , at opposite corners, used to
1
retain the seed box or hopper. Remove these pins
even if no container is presently mounted.
Refer to Figure 42 (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 planter.
14. Lower the container to the ground for exchange with
the next seed container.
2
3
Figure 40
Walkboard Pin and Keeper
1
Figure 41
Seed Box Lock Pins
Figure 42
Removing/Mounting Hopper
1
29312
29267
26121
a. The 150bu hopper is incompatible with on-board fertilizer tanks.
b. PROBOX® is a registered trademark of Pioneer Hi-Bred International, Inc.
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40 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
t
15. If mounting a seed box for the first time in a season,
open the new seed box and measure out
approximately 3 gallons (11 liters) of seed into a pail.
Add1⁄3cup (80 ml) of lubricant. Mix and pour into air
box before mounting new seed box.
Plugging and Inconsistent Population Risks:
Ezee Glide Plus lubricant mix 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 43
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 lbs
(1134 kg); a full 82bu hopper over 5000 lbs (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 planter 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 planter 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.
Figure 43
25255
Approaching Hopper
Inoperable Configuration Risk:
It is possible to lift the hopper or seed box from any side, but i
will only function properly if the seed gate is to the rear of the
planter.
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 41
Refuge Hopper Operation
The 10bu refuge hopper comes attached and ready to
operate if purchased at the same time as planter. If
purchased separately see installation instructions in
manual 403-287M.
Refer to Figure 44
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 .
Note: One slide gate may be left closed if there is a
preferred reason.
1
2
2
1
2
Figure 44
Refuge Hopper (rear view)
34851
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42 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Air System Operation
9
16
8
7
14
1
2
5
4
3
5
6
11
10
12
13
15
Figure 45
Yield-Pro® Air System for Air-Pro® Seed Metering
Meter Pressurization System Elements ( shows air direction)
1 7 13
Hydraulic Fan Pressure Sensor Lines Air-Pro® Seed Meter
2 8 14
Split-Air Manifold Pressure Sensor Chamber Row Pressurizing Tubes
3 9 15
Servo-Controlled Vane Feedback Signal Line Row Unit Seed Tube
4 10 16
WSMT Servo Programming Air Box & Seed Manifold IntelliAg® Console
5 11
Priority Meter Pressurization Air Seed Delivery Hose
6 12
Excess Air to Air Box Air Release Screen
29595
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 43
Air System Overview
10
1
2 3
5
6
7
9
11
12 13
14
15
16
4
There are console menus for adjustment of metering air,
and manual fall-back modes.
In the case of insufficient fan air, or significant seed
delivery air leaks, seed flow may be irregular or stop.
8
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.
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.
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.
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.
The hydraulic fan supplies air for both seed delivery
and meter operation. Fan rpm is operator-adjusted
(page 45) 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.
Note: 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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44 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Fan Circuit Operation
See also “Fan and Adjustment” on page 63.
Refer to Figure 46
Three hydraulic hoses serve the fan, and must be
properly connected for the fan to operate in the correct
direction , at recommended speeds, and without
1
1
4
damage. See “Hydraulic Hose Hookup” on page 16.
1. Always connect the case drain line first.
This line protects the outer shaft seal of the hydraulic
2
2
5
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.
3
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.
3
Figure 46
Hydraulics at Fan
29800
The planter includes an 11⁄16in 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
4
capable of the flow rates shown at “Recommended
Fan Speeds” on page 45.
4. The fan hydraulic circuit includes a check valve ,
5
which provides a relief path for oil at motor shutoff.
The resulting low fan rpm provides strong indication
reversed connection.
Correct fan direction is shown at .If reversed fan is
1
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
console.
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.
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
5
fan from reaching operating rpms. A reversed fan is
incapable of providing sufficient air flow for planting.
401-627M Table of Contents Index 2013-04-24
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 45
r
d
f
d
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® air pressure gauge. These
two readings should not disagree by more than a few
tenths of an inch.
Note: The Seed Rate manual provides initial values for
meter pressurization. Normal readings are in the
0.8in to 4.0in 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 96.
When starting empty you must blow seed out to the
meters for two to four minutes to fill meters.
Note: During “FILL METER”, all air is routed to the air
box, and none to the meter pressurization system.
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.
Recommended Fan Speeds
YP4025A Bulk Box
Initial Fan Speed
Fan Oil
Consumption²
Hydraulic Drive Oil
Consumption²
Total² Oil, Motors,
Initial Speed
Fan Speed Range
Fan Oil
Consumption²
Hydraulic Drive 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 ProBox.
² Does not include oil for lift/lower or markers.
Seed Hopper¹
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
16.1 gpm 15.2 gpm
61 liters/min 57 liters/min
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
16.1 - 15.2 gpm 14.4 - 16.9 gpm
61 - 57 lpm 54 - 64 lpm
Low Population Risk at Turns:
The figures above do not include oil for lift/lower or oil fo
marker operation. Aggressive lift/lower operations, an
simultaneous lift/marker operations, can reduce fan rpm below
that needed to pressurize meter disks. If seed falls out o
pockets, low population bands will occur shortly after turns.
Unless the tractor has generous oil flow capacity, raise/fol
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) Ezee Glide Plus to bottom of airbox.
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46 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Steps for setting and adjusting the air system are found
at “Fan and Adjustment” on page 63.
Y-Tubes
Refer to Figure 47
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 84.
Figure 47
Seed Y-Tube
29758
Airbox Operation
Refer to Figure 48
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.
Note: 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, add1⁄3cup (80 ml) graphite 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.
1
1
Figure 48
Air Box
29309
Monitor Operation
Monitor operation is described in a separate manual
supplied with your YP4025A Planter.
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
Figure 49
Seed Monitor Console
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 47
Electric Clutch Operation
The YP4025A Planter 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 planter
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.
2 3 4
1
Clutch Switch Coverage
Clutch Switch Coverage (Rows)
1
2
3
Figure 50
CFM: Clutch Switches
4
26120
2 3 4
Left Center Right
16 row 01-05 06-11 12-16
24 row 01-08 09-18 19-24
31 row 01-10 11-21 22-31
32 row 01-10 11-22 23-32
48 row 01-15 16-33 34-48
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
2
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 M8-1.25x14mm long metric bolts .
If you observe half the hole obstructed by a metal
6
disc , you are not at a cutout.
If the entire hole is obstructed by a metal disc , you
are not at a cutout.
3 4
1
5
6
Figure 51
Electric Clutch Lockup
6
1
2
5
29329
4
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.
Note: Use only the provided 14mm length bolts. Longer
bolts will damage the clutch. Shorter bolts may not
effect a lock-up.
Clutch Plate Nearly at Cutout
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3
Figure 52
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48 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 84).
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 .
1
2
3
4
5
6
7
8
9
6
4
1
5
7
2
8
3
Meter Operation
1. Install disks for your crop/population range per the
Seed Rate manual and the instructions beginning on
page 82 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 102), install a blank disk (page 84) 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 45).
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 (23mm) wrench, or raise planter, 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.
For hydraulic drive planters, an optional Remote Test
Switch is available from DICKEY-john® which allows
at-row control of meter rotation for meter fill and seed
pool recovery operations.
See also:
“Seed Pool Troubleshooting” on page 90,
“Seed Pool Recovery” on page 91,
“Meter Clean-Out” on page 102, and
“Meter Brush Maintenance” on page 104.
Air-Pro® Seed Meter at Row
Figure 53
9
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 49
Fertilizer Tanks (Option)
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.
2
2
Filling Tanks
Refer to Figure 54
1. Connect nurse-tank hose to quick-fill coupler
located at 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.
Note: 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.
Note: 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.
2
1
Ground Drive Pump
The liquid fertilizer option uses a ground drive pump
which engages whenever the planter is lowered and in
forward motion. For pump operation and pump
maintenance, refer to the pump manual, supplied in the
liquid fertilizer option package. For fertilizer settings, see
the Seed Rate manual.
1
Figure 54
Quick-Fill Coupler
29287
System Plugging Risk:
Do not allow fertilizer to remain in the tanks for extended
periods or settling of material and system plugging will occur.
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50 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Trailer Operations
The YP4025A planter optionally includes a trailing pintle
hitch, intended for use with Great Plains PFC1600 or
PFC2000 fertilizer tank carts. Hitching/hook-up and
operating instructions are found in the tank cart
Operator’s Manual.
Uncontrollable Load Hazard:
DO NOT EVER transport the tank cart while hitched to the
planter (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 planter. Trailer direction is extremely difficult to
control.
The PFC1600 and PFC2000 tanks include a
ground-driven pump with an electric clutch. The clutch
circuit is controlled by the “Fert.Pump” switch on the
1
Clutch Folding Module. Also, as the pump is
ground-driven, it automatically starts and stops with
planter movement.
Figure 55
Tank Cart Hitched to Planter
1
Figure 56
CFM: Tank Pump Control
29288
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 51
Field Set-Up Checklists
Use the following tables to develop a final checklist for
your tractor/planter configuration. Additional or fewer
steps may be necessary depending on tractor features,
planter options and planting accessories.
Mechanical Checklist Page
Tongue height preset on 3-point 22
Planter unfolded 25
Tongue front latch hook engaged 26
Transport locks moved to storage. 29
Caster locks set to FIELD
(extreme hillsides only)
52
Side-to-side level at gauge wheels 111
Marker initial length set 167
Marker disc angle set 62
Electrical Checklist Page
Verify electrical hookups solid 18
Check seed monitor terminal and observe
any diagnostic messages
a
With hydraulic circuits in Neutral, check
switches and indicator lights on Clutch
Folding Module switch panel. Confirm
-
Master OFF.
Verify that, when planter is lowered, radar
speed sensor is pointed at ground, at an
b
angle 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
Seed loaded 37
Tube gates turned on to correct rows 46
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
129
-
-
Frame Mounted Checklist Page
Row cleaner depth setting. 74
Coulter depth and alignment. 70
Row Units Checklist Page
Preset depth handles alike. 77
Preset down force springs alike, except in
tracks.
Set all unit-mounted coulters to1⁄4in
shallower than opener blades.
72
75
Check coulter alignment to row 76
Check closing wheel alignment 87
Set press wheels alike. 87
Check action and contact of side depth
wheels
78
Check wheel scraper gaps (if installed) 79
Treatments (Options) Checklist Page
Confirm Clutch Folding Module
“Fert.Pump” switch OFF
Check tractor-mounted components a
Ground drive wheel, chain
PFC2000 or PFC1600: Execute Tank Cart
Checklist
Check for correct orifice plates c
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
Inlet and hose valves open
SmartBox system loaded, powered up
a. Check supplier manual for tanks and pump. Check fertilizer sec-
tion of monitor manual.
b. See PFC2000/PFC1600 Manual.
c. Check Seed Rate manual, and manual for fertilizer pump sys-
tem.
50
b
-
-
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52 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Hydraulic System Checklist Page
Check tractor hydraulic reservoir full -
Inspect connections for leaks -
Perform a raise and lower operation 27
Check fan speed and airflow direction a
If equipped with hydraulic drive, confirm
Clutch Folding Module Master switch off,
47
and check hydraulic planter 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.
54
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 planter next moves.
2
3
See page 31 for unlocking steps.
1
Hydraulic Planter Drive Checklist Page
Check chain lubrication and slack 125
Input initial values for desired population a
Pre-run system using manual ground
speed mode on seed monitor. Reset to
a
digital frequency source after test running.
Calibrate radar speed sensor pulses with
planter lowered.
b
Lubricate slider joints on drive shafts 124
Check clutch operation 47
a. Refer to seed monitor manual and Seed Rate manual.
b. Refer to seed monitor manual.
Meters Checklist Page
Correct disks for seed a
Corn?
Check timing of meters for twin-row
Check chain tension. Re-connect any
loose idler tensioning springs.
a. Refer to Seed Rate manual.
a
-
1
2
3
Figure 57
29306
Caster Lock
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 53
Field Operation
Perform all steps in “Pre-Start Checklist” on page 24
and “Field Set-Up Checklists” on page 51.
First Pass Operation Checklist Page
1. Set tractor 3-point hitch to “depth
control” operation (and not load
control)
2. Unfold marker on next-row side. 54
3. Set fan hydraulic circuit to low flow,
engage circuit. Gradually adjust fan
hydraulic flow to obtain recommended
initial fan rpm.
4. Prime meters with seed.
Leave fan running.
5. Engage hydraulic seed drive via seed
monitor. Refer to seed monitor
manual.
6. If planter has a fertilizer system
integrated with the DICKEY-john seed
monitor, set the “Fert.Pump” switch on
the Clutch Folding Module to ON.
7. In the CLUTCH cluster of the Clutch
Folding Module, set all switches,
including Master, to ON.
8. Pull forward, lower planter, and begin
planting for a short distance.
9. Stop. Assess:
• planting depth
• seed spacing
• press wheel operation
• fertilizer application (if in use)
10. Make necessary adjustments 58
-
45
48
-
50
47
Sharp Field Turns Checklist Page
1. Fold marker 55
2. Raise planter 27
3. Make turn
4. Lower planter 27
5. Unfold marker on next-row side. 54
6. Resume planting.
Suspending Planting Checklist Page
1. Stop tractor
2. Fan hydraulic circuit to Float or Neutral 44
3. Fold Marker 55
4. Raise planter 27
Ending Planting Checklist Page
1. Suspend operations as above, then
2. Install lift locks 29
3. Set caster locks to ROAD 31
4. Fold planter 30
5. Lights ON -
6. Transport 33
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54 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Marker Unfolding
Electrocution Hazard:
Beware of overhead electrical lines. If the markers contact
lines, the tractor, raised planter 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 planter 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 36.
Before operating markers, make sure cylinders are
properly bled. See “Bleeding Hydraulics” on page 108.
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 167
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 166.
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 discs may be sharp. Serious injury or death is possible.
1
Figure 58
CFM: Marker Operation
26119
Marker Unfold (one side)
Refer to Figure 59 and Figure 60
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® Clutch Folding Module
(CFM), set “Marker/Fold” switch to Marker (up).
The LED above the switch illuminates steadily for
normal operation.
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.
1
Figure 59
Marker Unfolding
Figure 60
One Marker Unfolded
29285
29286
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 55
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 planter 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 YP4025A Planter.
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 planter 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 planter 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 planter (manual part
number 401-627B) contains sampling instructions.
Figure 61
Planting
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56 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Short-Term Parking
1. Fold markers. See “Folding the Markers” on
page 55.
2. Choose a location with level firm ground. Do not
unhitch on a slope.
3. Raise the planter.See “Raising Planter” on page 28.
4. Fold the planter (optional). See “Folding the
YP4025A Planter” on page 30.
5. Block tires.
6. Re-install the parking stand (“Hitching Tractor to
Planter” on page 16).
Refer to Figure 62 (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 .
5 4
5
6 7
7
4
6
For hydraulic hitch planters, 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.
5
Figure 62
Deploying 3-Point Stands
5
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Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 57
Long-Term Storage
Complete Parking steps first.
1. Park the planter 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 planter only without seed.
5. Open airbox clean-out door. Clean out residual seed.
6. Close airbox clean-out doors. Using planter 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 102, 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 planter of mud, dirt, excess oil and grease.
15. Inspect YP4025A 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 planter to protect the metal.
17. Cover YP4025A with a tarp if stored outside.
Figure 63
Planter Ready for Parking
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.
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.
29290
Storage: Fertilizer Option
The pump, strainer and manifold system require special
attention prior to storage. See “Fertilizer System
Maintenance” on page 117.
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58 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Adjustments
To get full performance from your YP4025A Planter, you
need an understanding of all component operations, and
many provide adjustments for optimal field results. Some
of these have been covered earlier in this manual.
Even if your planting conditions rarely change, some of
these items need periodic adjustment due to normal
wear.
Adjustment Page The Adjustment Affects
Tongue Height 20 Correct draft load to tractor
Frame height 21 Planting depth consistency
Frame level 22 Planting consistency
Height Switch Adjustment 61 Correct off/on state of meter drive
Wing Leveling 111 Planting consistency
Clutch Lock-Up 47 Temporary operation with a failed clutch
Air System 42
Fan Speed 45 Optimal seed distribution
(values from SRMa) 63 Consistent seed flow and disk singulation
Planting Rate SRMaRefer to Seed Rate manual
Marker Adjustments
Marker Extension 167 Intended swath spacing
Marker Chain Length Adjustment 54 Marker folding operation
Dual Marker Speed Adjustment 166 Reliable marker operation
Fertilizer Adjustments
Fertilizer Setup (option) 66 Seed germination and growth
Fertilizer Orifices (option) - Refer to YP4025A Planter Seed Rate manual
Frame-Mounted Row Accessories
Terra-Tine Row Cleaners 69 Row preparation
Coulters 70 Row pre-furrow depth and trash cutting
Vantage I Fertilizer Delivery 70 Fertilizer placement
25AP Row Unit Adjustments
Opener Depth 77 Planting depth
Row Unit Down Pressure 72 Planting depth uniformity
Row Unit Lock-Up 85 Single/twin-row operation
Row Cleaner Adjustments (Option) 74 Row preparation
Coulter Adjustments (Option) 75 Seed depth uniformity
Opener Disk Adjustments 77 Seed depth, seed-to-soil contact
Side Depth Wheels 77 Seed depth, prevents plugging
Adjusting Gauge Wheel Scrapers 79 Consistent seed furrow depth
Seed Meter Setup and Adjustment 80 Consistent seed population
Seed Firmer Adjustments (Option) 86 Seed-soil contact
Press Wheel Adjustment 87 Effective soil coverage
Planting Rate Refer to Seed Rate manual
Monitor Adjustments PDCbRefer to Seed Monitor manual
a. SRM: Seed Rate Manual (401-627B)
b. PDC: DICKEY-john
®
Planter/Drill Control manuals
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 59
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.
®
Figure 64
29772
Seed Monitor Rate Screen
Fertilizer Rate
See page 66 for further detail. The following is a brief
summary of steps:
1. Pump setting dial and sprockets.
2. Row orifice setup.
3. Relief valve setting.
4. Strainer setup.
Figure 65
JohnBlue Fertilizer Pump
26155
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60 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Height Switch Adjustment
s/n B1024H+
Refer to Figure 66
The YP4025A Planter includes a sensing switch that
signals the seed monitor (and activates the optional
hydraulic meter drive), when the planter is lowered for
planting. The switch is located at the rear cross tube on
the planter’s left side.
Although factory-preset for typical planting conditions,
Great Plains recommends adjusting this switch for your
exact field conditions and planting depth.
1
5
6
1
2
3
4
Crushing Hazard:
Exercise extreme caution when adjusting the switch.
1. Lower the planter 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.
Note: Switch is in “Neutral” position when planting.
Switch is “Activated” when raised.
2 3 4
5 6
Figure 66
Height Switch Location s/n B1024H+
32347
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 61
Height Switch Adjustment
s/n B1023H-
Refer to Figure 67
Planter is shown in raised position for clarity of height
switch. The YP4025A Planter includes a sensing
switch that signals the seed monitor (and activates the
optional hydraulic meter drive), when the planter is
lowered for planting. The switch is located at the front of
the right link connecting the rockshaft and rear axle.
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 planter to the height at which seed
2. Loosen U-bolt holding switch bracket to link .
3. Move bracket forward or rearward so that switch
4. Tighten nuts.
Note: Switch is in “Neutral” position when planting.
1
delivery is to begin.
2 3 4
toggle arm makes contact with tool bar .
Switch is “Activated” when raised.
5 6
6
5
4
2
Figure 67
Height Switch Location s/n B1023H-
1
3
29266
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62 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 110)
If a marker hangs up on an obstruction, a bolt at the
fold is designed to fail.
• Marker Cylinder Bleed (Maintenance, page 110)
If marker operation is irregular, check that system is
not contaminated with air.
• Marker Extension (Initial Setup, page 167)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Speed (Initial Setup, page 166)
Once initially set by your dealer, this rarely needs
modification.
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 planter when folding or
unfolding the markers.
Marker Disk Adjustment
Sharp Object Hazard:
Use caution when making adjustments in this area. Marker
disks may be sharp.
Refer to Figure 68
1. To change angle of cut, and the width of the mark,
loosen1⁄2inch bolts holding the disk assembly.
For a wider mark , increase the angle of the
marker with respect to the tube . For a narrower
N
mark , reduce the angle.
Note: 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 .
Note: 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.
2
2
W
1
T
W
N
2
Figure 68
Marker Disk Angle
1
T
T
11757
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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 80).
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 45.
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®Planter/Drill 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.
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.
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64 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
12. During the first pass, take note of the average
populations reported on the seed monitor.
Typical Location: Item:
Screen 1, first row
Average Overall Population
above graphs
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 91.
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
Minimum Row Population
above graphs
Screen 1, 3rd row
Maximum Row Population
above graphs
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. “Popula-
tion Troubleshooting Charts” on page 91.
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 planter in
motion.
Press the “SPLITAIR +” 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 planter 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.
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.
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 65
Fine-Tuning
After several passes, and you are comfortable with the
planter’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 5-10 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.
Note: 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 69
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.
1
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 planter 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.
U
F
L
R
B
D
1
Figure 69
Fan and Manifold
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Liquid Fertilizer Adjustments
Note: For dry fertilizer operations, see manual 403-362M,
which covers the dry fertilizer/seed hopper and air
delivery system operation.
a
Liquid fertilizer distribution systems
YP4025A Planter and are optimized for use with the
optional on-board 2x200 gallon tanks and/or the Great
Plains PFC1600 or PFC2000 tank carts.
If installed, there are several points of fertilizer setup
and/or adjustment:
1. Pump setting dial or sprockets
Basic pumping rate is adjusted at pumps.
For the cart-mounted pump and center section
ground-drive pump, a dial on the pump sets rate.
Refer to the Seed Rate manual and the tank cart
Operator’s manual.
are optional on the
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.
2. Row orifice setup
Orifice plate sizes are chosen to assure consistent
pressure at all nozzles. Refer to the Seed Rate
manual.
3. Relief valve setting
See “Fertilizer Relief Valve” on page 68.
4. Inlets
Both Type 2 (2-section, single inlet) and Type 3
(3-section, 3-inlet) systems have quick-connect inlets
and shutoff valves at the back of the planter. See
page 21 for hook-up details.
5. 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.
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 planter-mounted ground drive pumps for Type 2. See page 21 for details.
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 67
Ground Drive Pump
Refer to Figure 70
With a Type 2 fertilizer system, the pump is driven by a
ground contact wheel . Fertilizer rate is independent of
seed rate. Fertilizer coarse rate is set by a driving
sprocket on the ground drive assembly, and fine rate is
adjusted at the setting hub (dial) on the pump.
3
2
4
1
4
1
Equipment Damage/Material Loss Risks:
If planting without fertilizing, the pump must not be allowed to
run dry. Disconnect the chain or remove a sprocket. The
ground drive contact wheel and chain system operates
whenever the planter is lowered and in motion.
Note: When a Type 3 fertilizer system is installed, the
pump is mounted at the source (not on the planter),
usually on a tank cart.
For sprocket and dial settings, refer to the Seed Rate
manual.
Liquid Fertilizer Strainer(s)
The optional ground drive fertilizer pump systems
include a strainer at the pump. The Type 3 system relies
on strainers at the source, usually on a tank 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.
2
3
Figure 70
John Blue Pump
Sprocket and Dial
Figure 71
Strainer
28416
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68 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Fertilizer Relief Valve
Refer to Figure 72
When a “Type 2” fertilizer system is installed, a relief
1 2
valve and pressure gauge are mounted at each
ground drive pump. 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.
5
6
7
7
2
5
7
5
4
2
5
Figure 72
Fertilizer Relief Valve
3
1
6
7
25164
Fertilizer Orifice Plates
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 planter (manual part
number 401-627B) contains a table of orifice sizes in
gallons per acre.
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.
1
Agricultural Chemical Hazard:
Wear protective gloves when changing orifice plates.
1
Figure 73
Fertilizer Orifice Plate
29984
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Frame-Mounted Row Accessories
Terra-Tine™ Adjustments
Refer to Figure 74 through Figure 76
Note: All adjustments must be made with the planter in
the fully raised position.
Equipment Damage Risk:
Be sure to check that the Terra-Tine Row Cleaner tines DO
NOT touch the coulter blade or any other attachments. Such
contacts will cause excess wear to all parts involved. At least
1
⁄2in (13mm) clearance is recommended.
1. When the blade is out of the soil, adjust the
Terra-Tine lock collar height to set the height of
tine fingers flush with the bottom of coulter blade.
2. For side-to-side alignment, rotate the shank mount
around the vertical shaft and retighten the square
head set screw (set screws not visible in twin-row
illustration).
3. If tines are found to be rolling over, rather than
moving trash, spring tension can be increased.
See the Terra-Tine manual for details.
Using Terra-Tines with Coulters
Refer to Figure 74 and Figure 75
Tines may be set ahead of, behind , and to the
8 9
right or left of frame-mounted coulters.
4. Fore-to-aft adjustment is accomplished by adding or
removing the extension arm to place the
Terra-Tine Row Cleaner to either side of the coulter
hub depending on the desired position or clearance
between other attachments. Testing has shown
better performance behind the hub, but available
space may dictate the mounting position.
2
1
3
1
4
6 7
5
3
3
1
4
5
2
Figure 74
Terra-Tine Twin-Arm and
Single-Arm with Extension
5
26060
26061
5
6
7
8
9
9
8
Figure 75
Terra-Tine / Coulter Hub Positioning
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70 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Frame-Mounted Coulter Adjustments
Refer to Figure 76
Frame-mounted coulters may be run on-row or between
rows.
On-Row
If run on-row, or within 2in (5.1cm) of the furrow, adjust
the shaft to set the coulter depth to be the planting
depth or
Between Row (or Off-Row at least 2in)
At the shaft , adjust the coulter depth for a running
depth of 4 to 41⁄2inch (10.1-11.4 cm) below ground
level . Refer to the Vantage I manual (204-376M) for
further adjustments.
Do not adjust the spring tension. It is factory pre-set.
1 2
1
⁄4inch (6 mm) shallower.
1
2
3
4
1
3
4
2
Vantage I Fertilizer Adjustments
Refer to Figure 77
At the back plate , adjust the tine height for a running
depth of 1 inch (2.5cm) below ground level . Refer to
the Vantage I manual (204-376M) for further
adjustments.
2 3
1
Figure 76
Frame-Mount Coulter
1
Figure 77
Vantage I Applicator
25392
2
3
22951
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 71
l
25 Series Row Unit Adjustments
Refer to Figure 78 (which depicts a row unit populated
with most optional accessories supported for use with
the YP4025A)
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 84.
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 72.
3. Air Inlet (Standard)
Pressure-regulated air enters the meter here and
holds seed in the disk pockets. See “Fan and
Adjustment” on page 63.
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® Seed Meter (Standard, Choice of Disks)
See “Air-Pro® Meter Disk Installation” on page 82.
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 80.
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 Adjust-
ment” on page 78.
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 87.
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 84.
10. Row Cleaner (Option)
Row cleaners clear trash from the row, to a depth set
by an adjustment on the arms. See “Unit-Mount
Cleaner Adjustments” on page 74.
6
2
1
3
4
5
8
6
9
7
14
10
Do not back up with row units in the ground. To do so wil
cause severe damage and row unit plugging.
11. 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 “Coulter Adjust-
ments” on page 75.
12. Opener Discs (Standard)
Row-unit double disc openers create the seedbed
furrow. They have adjustments for angle and spacing. See “Row-Unit Opener Disk Adjustments” on
page 77.
13. Seed Tube with Sensor (Standard)
Requires no adjustment.
14. Scrapers (Optional, not shown)
Inside scrapers require no adjustment. For gauge
wheel scrapers, see “Adjusting Gauge Wheel
Scrapers” on page 79.
15. Seed Firmers (Seed Flap Standard, not shown)
An optional seed firmer (Keeton shown) minimizes
seed bounce and improves soil contact. It may also
deliver fertilizer. See “Seed Firmer Adjustments”
on page 86.
16. Press Wheel Type (Choice)
A variety of single and dual press wheel assemblies
are available, some region-specific. Consult your
Great Plains dealer.
12
11
Figure 78
25 Series Row Unit
13
15
16
29600
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72 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Row Unit Down Pressure
Refer to Figure 79
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 planter for a short
distance on typical ground (with or without seeding), and
stop. Leave the planter 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.
Note: Be sure to inspect rows both in and out of tire
tracks.
Refer to Figure 80
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.
Figure 79
Checking Furrow
Light or no side gauge
wheel tracks
Gauge wheels compress
loose soil only
Inspect Furrow Here
Insufficient down-force
Increase down-force
1
Ideal
No adjustment required
2
{
29600
Adjusting Down-Force
Refer to Figure 81
Row unit springs provide the primary down pressure
necessary for row unit disks 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.
1
Side gauge wheels
making deep tracks
Assessing Down-force
1
25 Series Row Unit Springs
Down-force too high
Reduce down-force
3
Figure 80
Figure 81
29600
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 73
An adjuster cam sets down pressure individually for
2
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 30in or 70cm rows.
Refer to Figure 83
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
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 82 (shown at cam setting 2),
Figure 83 and Figure 84
To adjust down pressure, use a 11⁄8inch (29mm) open
end wrench or the tool stored under the walkboard.
3
1. Raise the planter. Although this adjustment can be
made with the planter lowered, the springs will be in
tension, and will require more effort. The extra force
required may also damage tools.
3
Figure 82
25AP Series Row Unit
Spring Adjustment
4
6
Figure 83
Row Unit Minimum Cam (at 1)
2
5
29605
27065
bottom
2. Install lift cylinder locks.
3. Put tractor in Park and shut it off.
4. Position wrench on the fixed nut near or slightly
4
forward of vertical.
5. Pull upper spring link back.
6. Move the adjustment cam to the new setting on
the spring adjust bar .
5
2
6
Note: 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.
2013-04-24 Table of Contents Index 401-627M
Row Unit Maximum Cam (at 6)
Figure 84
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74 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Unit-Mount Cleaner Adjustments
Refer to Figure 85 and Figure 86
Optional Martin row cleaners are unit-mounted, using:
UMRC: Unit-Mount Row Cleaner (stand-alone), or
UMC-RC: Unit-Mount Coulter RC (on coulter bracket,
with or without a coulter disk present).
There are two adjustments:
1. Wheel placement (forward or aft mounting hole, for
more or less aggressive cleaning), and
2. Wheel height, adjusted by a stop. Cleaner arms
float. The stop only sets the lowest position.
In UMRC mount, a pinned cross-tube on the mount
adjusts the depth. In UMC-RC (coulter) mount, a sliding
down-stop block adjusts how close to the ground the
row cleaners operate.
The row cleaner needs to be adjusted for your
conditions, crop changes, and as coulters and openers
wear. Ideally, cleaners contact only the trash, and do not
disturb the soil. If allowed to “dig”, row cleaners can
reduce seed coverage.
Suggested initial depth is tine tips at ground level.
Make the adjustment with the planter raised. Install
lift-assist cylinder locks. Also check bolt tightness prior
to each planting session, to avoid down-stop slippage.
To adjust the row cleaner:
1. Determine the height adjustment required. Measure
from the lowest tine to the ground. Determine the
desired new measurement.
2. Support most or all of the weight of the arm to
prevent injury and ease the adjustment. Loosen
5 2
bolts on UMC-RC. Remove bent pin on UMRC.
3. Support arm at desired height.
4. UMRC: Slide adjustment tube until cross-tube
contacts arm at target height. Insert bent pin in
whichever hole pair is most in alignment.
5. UMC-RC: Slide the down-stop on the arm :
- back toward the pivot for shallower cleaning, or
- forward toward the tines for deeper cleaning.
Tighten the bolts . Each possible hole pairing
adjusts the tine height by about3⁄4inch (19mm).
6. Check the new height measurement.
Refer to Row Cleaner manual 204-085M-A for further
information on use, adjustment and maintenance of row
cleaners.
6
5
3
5
1 3
2
6 4
Sharp Object Hazard:
Wear hand protection when working in this area. Row cleaner
tines, casting edges and coulter blades are sharp.
UMC-RC: Row Cleaner Adjust
1
2
Figure 85
UMRC: Cleaner Adjust
5
6
Figure 86
3
27308
4
27343
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Coulter Adjustments
Note: Coulters are not factory-installed. Check alignment
and depth prior to first use.
Note: For frame-mounted coulter adjustments, see
“Frame-Mounted Coulter Adjustments”on
page 70.
Coulter Depth Adjustment
The ideal operating depth for coulters is1⁄4inch (6mm)
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 87 and Figure 88
Raise planter 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.
Figure 87
25 Series Unit-Mounted Coulter
7
29124
2. Note which bracket hole the coulter is presently
using.
3. Determine which new hole will position the coulter
closer to the1⁄4in-above depth. See the table below.
4. Remove the5⁄8-11 x 4in bolt, lock washer and nut
(in Figure 87).
5. Move the blade to the new position. Insert the bolt,
and tighten on the lock washer and nut.
Hole
Number
2
3
5
1
4
6
Depth of (new) coulter blade
relative to (new) opener blades
1in (25mm) above
5
⁄8in (16mm) above
1
⁄4in (6mm) above
0
3
⁄8in (9.5mm) below
3
⁄4in (19mm) below
6. Re-adjust row cleaners, if installed.
If a worn coulter cannot be adjusted to satisfactory
operating depth, replace coulter.
2
3
5
1
4
7
6
Figure 88
Coulter Blade Mounting Holes
29125
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Coulter Row Alignment
Refer to Figure 89
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
2
3
1
coulter or the press wheels (or both) may be in need of
adjustment.
The exacting test of correct alignment is field results.
1
Operate the planter 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
2
Adjustment” on page 87 for press wheel alignment.
3
Refer to Figure 90
To adjust coulter alignment, loosen the four bolts that
4
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.
Figure 89
25 Series Coulter Alignment
4
Figure 90
25 Series Coulter Mount
26125
26126
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 77
Row-Unit Opener Disk Adjustments
25 Series openers have three adjustments:
1. planting/seed depth
1
2. opener disc to disc clearance
3. gauge wheel/opener disk clearance (page 78)
Setting Planting Depth
Refer to Figure 91
The “T” handle sets planting depth by limiting the how
1
high the side depth gauge wheels ride relative to the
opener disks. The position of the seed tube itself is fixed
relative to the disks, and is not adjusted.
To adjust seed depth, pull the “T” handle up and back,
1
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 for-
1
ward.
• For deeper planting, move the “T” handle back.
1
Opener Disc Contact Region
Refer to Figure 92
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
4
between the blades, they should slide to within zero
(touching) to 1.5in (3.8cm) of each other. If zero, the 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 93
1. Raise the planter and install lift cylinder locks.
2. Remove the side gauge wheels on the row unit in
5
need of adjustment.
3. Remove the bolt retaining the opener disc on
6 7
one side. Carefully remove the disc. Do not lose the
hub components and spacer washers , .
8 9
4. To reduce the spacing between the discs (the normal
case), move one spacer washer from the inside to
the outside of the disc.
9
8
5. Re-assemble and check disk contact.
2
Figure 91
Opener Adjustments
4
Figure 92
Opener Disc Contact Region
8
7
Figure 93
Opener Disc Spacers
3
29600
5
26127
9
6
26128
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Side Gauge Wheel Adjustment
Refer to Figure 94 and Figure 95
Disc-to-wheel angle and clearance ideally has the wheel
just touching the disk when the wheel is raised to
planting depth (is up against the stop set by the “T”
handle. The goal is to have both disks 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 disk angle due to changing
depth or new field conditions, these two settings may
need attention over time as the disk and wheels wear
from normal use. This adjustment will also need to be
made if any opener components are replaced.
Refer to Figure 95
For 2 inch (5.1cm) planting depth, adjust side gauge
wheel angle so wheels contact row unit disks 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 disks so openers do not plug with soil or trash.
Note: Wheels should be out far enough so disks and
wheels turn freely.
Refer to Figure 97 on page 79
To adjust side gauge wheels:
1. Raise the planter 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
4
notch is at 5 o’clock to 7 o’clock.
Note: Use this as the starting point for adjustment.
4. Move wheel arm in so side gauge wheel contacts
row unit disk. Tighten hex-head bolt to clamp arm
around bushing and shank.
Refer to Figure 96
5. Check wheel-to-disk contact at 2 inch (5.2cm)
planting depth. Lift wheel 2in, check contact and
release. When let go, wheel should fall freely.
• If wheel does not contact disk at bottom to area where
blade leaves contact with soil, move hex adjuster until
wheel is angled for proper contact with disk.
1
2 2
1
Side Gauge
Wheel
Side Gauge
Wheel
Opener
Disks
Incorrect
Correct
Figure 94
Disk/Gauge Wheel Alignment
Contact Within this Area
Figure 95
Opener-Gauge Wheel Contact
Figure 96
Checking Wheel/Disc Contact
22531
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 79
• If wheel does not fall freely, loosen hex-head bolt
1
and slide wheel arm out just until wheel and arm move
freely. Retighten hex-head bolt according to grade:
1
⁄2in Grade 5 bolt on 25 series, 75 ft-lbs (102 N-m).
1
⁄2in Grade 8 bolt on 25 series, 110 ft-lbs (149 N-m).
1
Note: Use “Torque Values Chart” on page 147 for
reference.
6. Keep turning hex adjuster and moving wheel arm
until the wheel is adjusted properly. When satisfied,
tighten pivot bolt to 110 ft-lbs (149 N-m).
2
Adjusting Gauge Wheel Scrapers
Refer to Figure 98 (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
5
6 8
touches tire.
3. Slide scraper away from wheel leaving a1⁄8in
(3mm) gap at .
6 8
7
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 angle on bolt until gap is
5 7
constant.
6. Tighten nut .
5
1
Starting Point
Disk/Gauge Wheel Adjustment
1
4
4
Figure 97
5
7
8
Figure 98
Gauge Wheel Scraper
2
2
22524
22525
6
25273
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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 99
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 100 (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.
1 2
3
2
Setting Setting Typically Used For
Top (0) Closed: Row Shut-Off, Meter Re-Fill
| (1)
|| (2)
||| (3) Corn, round popcorn
|||| (4) Large corn, or heavily treated corn
Bottom (5) Wide Open: Clean-Out
1
Figure 99
Rain Cover Removal
0
|
Figure 100
Seed Inlet Shutter
Small seeds, such as Milo, with little or
no treatments
Small treated seeds and edible beans
(such as Soybeans)
3
29606
II
III
||||
5
29607
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k
d
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 101
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 102 and Figure 103
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.
1
1
Milo: Seed Inlet Shutter at: 1
Soybeans: Seed Inlet Shutter at: 2
Corn: Seed Inlet Shutter at: 3
Foreign Object Risk:
After clearing a bridge, or a delivery blockage upstream, chec
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 see
pocket and causing on-going skips.
8:00
Figure 101
8:30
Figure 102
8:30
Figure 103
1
29602
1
29604
1
29603
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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 80).
Refer to Figure 104 (depicting an empty meter)
4. Inspect meter (see page 104 for details).
5. Make sure clamp is aligned with seat .
Refer to Figure 105
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.
Note: 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.
Note: 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.
1 2
1
3
4
2
Figure 104
Disk Removed From Meter
3
1
Figure 105
Disk on Clamp and Seat
1
29608
29611
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 a7⁄8in open-end wrench.
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 80).
401-627M Table of Contents Index 2013-04-24
4
Figure 106
Disk Clamped
29614
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 83
Removing a Seed Disk
Refer to Figure 107
1. Remove rain cover. If seed is present, close
shutter to prevent more seed from entering meter.
4
Attach funnel (page 102).
2. Hold seed disk in meter. Rotate disk clamp
1
3
counterclockwise 45° to release disk.
3. Tilting top of disk toward meter, slowly remove disk,
4
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
2
Figure 104 page 82), so that new disks can seat fully.
Inspect brushes for excess wear and damage. See
“Meter Brush Maintenance” on page 104.
1
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 106.
6. Re-install the rain cover (page 80).
Figure 107
Remove Disk
29611
Sprocket Indexing (Stagger)
28420
If you are planting:
• twin-row crops,
• at seed interval spacings above 61⁄2inches (16.5cm),
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.
.tif
600 dpi
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d
Row Unit Shut-Off
Skip-row operations, such as planting from every other
row when switching from 30in twin-row to 30in
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 167).
7. Reset monitor active row pattern and row spacing to
avoid nuisance alarms (always done).
Note: Meter drive is not disabled on 25AP row units
during shut-off.
1. Identify Rows to Shut Off
On twin-row planters, openers are installed with short
and long opener mounts. If locking up unused rows of a
twin-row planter, shut off the rear (long mount) rows.
On single-row planters with mid-length mounts, any rows
may be locked up.
2. Close Seed Shutter
Refer to Figure 108 on page 84
Lift the handle away from the plate. Move it to the top
2
position, and release the handle into the notch.
Closing the shutter prevents meter pressurization air
1
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 109
Clean out meter. See “Meter Clean-Out” on page 102.
Remove seed disk and install blank disk. See “Air-Pro
®
Meter Disk Installation” on page 82.
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.
2
1
Figure 108
Seed Inlet Shutter Closed
Figure 109
Shutter Closed, Blank Disk Installed
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 regulate
airflow, particularly at rows with pressure sensor lines.
29609
29610
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Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 85
4. Close Y-Tubes
Refer to Figure 110
If any shut-off rows are served by a Y-tube, close the
valve for the branch to that row. Rotate the valve 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.
Figure 110
Y-Tube Open and Closed
29758
Refer to Figure 111
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
3
hole in the row unit shank.
1
2
1
2
4
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.
Note: If you lose a pin, the replacement part number is
805-033C.
1. Raise the planter. Although this adjustment can be
made with the planter 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 73.
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
4
5
3
5
Figure 111
25AP Row Unit Lock-Up Pin
3
25269
29600
Crushing Hazard:
Use a jack or hoist. Raising a row unit on a block by lowering
the planter is risky. The potential for hydraulic failure creates
Figure 112
25AP Row Unit Locked Up
29756
a safety hazard. Full lowering can damage components.
Refer to Figure 112
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.
2013-04-24 Table of Contents Index 401-627M
2
3
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.
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86 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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 disk blades may be sharp. Use caution when making
adjustments in this area. To adjust the Keeton Seed Firmer,
lower the planter until the disks of the row units are resting on
the ground.
Keeton Seed Firmer Adjustment
The optional Keeton 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 113
The Firmer is provided with a preset tension which is
recommended for using the first year. The tension
screw can be tightened in subsequent years
1
according to your needs. Firmers should provide just
enough tension to push seeds to the bottom of the
trench.
1
Figure 113
Keeton Seed Firmer
28316
Seed-Lok® Seed Firmer Lock-Up
Optional Seed-Lok® 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, you can lock-up the firmers.
Refer to Figure 114 (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 planter. Insert lift assist cylinder locks.
2. Lift Seed-Lok®lock-up handle until lever stop is
1 2
free to rotate.
3. Rotate lever stop to side/idle position . Release
lock-up handle .
4. Push up on Seed-Lok® wheel until wheel arm
latches up .
1
4
5
3
To release a locked-up Seed-Lok®:
1. Insert a1⁄4in tool drive tip in the tool hole of the
handle . Alternatively, lift up on the wheel .
1 4
6
2. Rotate the handle clockwise (handle arm up) until
the Seed-Lok® wheel releases at the latch point
5
and falls free.
3. While holding the handle up, rotate the raised portion
of the lever stop under both sides of the handle
2 2
at the arm end. Remove the tool.
6
1
3
2
4
5
Figure 114
Seed-Lok® Lock-Up
Note: Engage the lever stop under the handle when
Seed-Lok®is in use. If left disengaged , a furrow
obstruction could cause unintended lock-up.
31543
2
3
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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 disks encounter
obstructions.
There are three adjustments available on the press
wheel assembly:
Refer to Figure 115
1. Down pressure (shown at maximum)
2. Wheel stagger (shown staggered)
3. Centering (see Figure 117 on page 88)
Press Wheel Down Pressure
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
• Pull the handle back for increased down pressure.
Note: Higher press wheel down pressures reduce the
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 planter. To change the stagger:
Refer to Figure 116
1. Raise the planter and install the lift assist cylinder
2. Remove the bolt , nut and lock-washer for the
3. Move the spacer and wheel to the forward of
4. Re-install the bolt, lock washer and nut. Tighten.
1
decreased down pressure.
1
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 72.
locks. See “Lift Cylinder Lock-Up” on page 29.
4 5 6
left press wheel .
the two mounting holes at .
8
7 8
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 72.
1
3
2
Figure 115
Press Wheel Adjustments
25118
1
2
5
3
Figure 116
Press Wheel Force & Stagger
7
6
8
4
22907
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88 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
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
1
the press wheel assembly can be adjusted as follows:
3
2
1
Refer to Figure 117
1. Determine how far, and in which direction, the press
wheel assembly needs to move to center the wheels.
2. Raise planter and install lift assist cylinder locks. See
“Lift Cylinder Lock-Up” on page 29.
3. Loosen the1⁄2in hex-head bolts and .
2 3
4
Note: 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.
3
5. Tighten both hex head bolts and .
4
2 3
Figure 117
Press Wheel Centering
(View from beneath opener)
25277
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.
401-627M Table of Contents Index 2013-04-24
Page 93
Great Plains Manufacturing, Inc. Table of Contents Index 89
Troubleshooting
Planting Rate Problems
When starting up with a new planter, 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
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 planter drive is set
properly to hit the target population, but also to fix
incorrect entries in the DICKEY-john
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 planter is actually doing in the
soil. Always dig or observe seed on the ground when
checking populations.
®
monitor.
®
monitor to
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”.
®
1. Is the spacing on the
ground correct?
2. Is the reported population
1
⁄2 the actual or is the
reported population too
high by a factor of 2?
3. Is the population on the
screen close to the target
population?
No: 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.
Yes: Go to step 2.
No: Go to step 3.
Yes: 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® console.
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 planter.
No: Check seed rate charts against transmission sprockets selected. See
“Population Too Low”or“Population Too High” in the troubleshooting
charts.
Yes: If slightly under, see “Population Too Low” if slightly over, see
“Population Too High”.
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90 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Seed Pool Troubleshooting
1
29743
.eps
100%
Rear Cross-Section of Air-Pro® Meter in Normal and Row-Failed Conditions
Normal:
Filling
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.
Normal:
Filled
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.
Figure 118
Delivery Blockage or
Back-flow Starvation
No seed arriving from
manifold. Air back-
1
flow is occurring.
Causes may include:
• low fan speed
• seed hose blockage
• no seed available
• Y-tube closed
• meter never primed
Bridging:
Screen
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.
1
A bridge at the shutter is
blocking flow. Causes
may include:
• oversize seed
• shutter setting too low
• oversize matter in
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 91).
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 91).
1. If shutter was at
2. Check seed pool
3. Resume planting.
6. Resume planting.
29743
Bridging:
Shutter
seed
suggested opening, increase one
notch.
for foreign matter.
401-627M Table of Contents Index 2013-04-24
Page 95
Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 91
Seed Pool Recovery
When a meter has been starved of seed, back-flow of air
through the open shutter reduces delivery air flow. This
causes seed delivery to be slow. If you start or resume
planting with an empty seed pool, the delivery flow may
be too low to keep the meter supplied. The steps below
quickly “prime” the meter by rebuilding the seed pool.
Refer to Figure 119 (which depicts a recovery after an incidence of bridging at air release screen)
1. Close the shutter . This stops the air back-flow.
2. Clear the bridge or blockage that caused the
meter to run empty.
3. With the fan running, listen for seed to fall into the
inlet.
4. Wait for seed fall to taper off and stop.
5. Open the shutter to the operating setting.
6. Start or resume planting.
1
2
3
4
5
2
3
1
29744
Figure 119
Seed Pool Recovery
4
5
29744
Population Troubleshooting Charts
Population Too Low
Problem Cause Solution
Overall
Low
Population
Incorrect seed rate Check seed rate charts
Empty pockets on disk (skips) due to
insufficient air pressure.
Empty pockets on disk (skips) due to sticky
seed treatments not allowing seed to rapidly
fill the pockets.
Empty pockets on disk (skips) due to rough
field conditions causing seeds to fall from
the disks.
Empty pockets on disk (skips) due to seed
pool too low, and seeds are not filling every
pocket on the disk.
Empty pockets on disk (skips) due to disk
speed too high, and pockets are not filling.
Empty pockets on disk (skips) due to
singulation (4 tufted) brush too aggressive.
Empty pockets on disk (skips) due to seed
too big for pocket.
Seeds are not falling from disk, and get
carried past drop zone. Static electricity can
cause small, lightweight seeds to cling to the
pocket and not fall out.
Methodically increase the controlled air to the meter.
See “Fan and Adjustment” on page 63.
Increase seed lubricant.
Decrease field speed or increase the air pressure in
the meter.
Open shutter one notch.
Decrease field speed or change to a higher cell count
disc.
Check for matted, stuck together fibers. Wash, scrape
clean, or replace as needed.
Select the correct disk for the seed size.
The graphite component of Ezee Glide Plus addresses
this issue. Increase the amount of Easy Glide Plus
and/or more thoroughly mix the lubricant into the seed.
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Page 96
92 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Population Too Low
Problem Cause Solution
Overall
Low
Population
(cont.)
Low
Population,
One
Section
Air pressure too low, false information
driving the DICKEY-john
Low fan speed: meter starvation due to
meter pressurization, leaving insufficient air
for seed delivery
Leaking meters in split row: meter starvation
due to meter pressurization leaving
insufficient air for seed delivery
Excess field speed Plant within speed ranges recommended in seed rate
Incorrect speed sensor constant. Perform speed radar calibration per DICKEY-john
Speed sensor angle. With planter lowered, check radar speed sensor angle
Pass gaps too large Check marker extension (page 167).
Actual field size is different Population may be correct, and calculations are not.
Clutch slipping, due to contaminants in
clutch, or wear
Skipping chain from drive to section Check chain slack.
®
software.
Compare the air pressure reported on the monitor
console to the mechanical gage. If they do not match:
• Inspect the1⁄4in sample lines from the row units up
to the sensor chamber for leaks.
• Make sure all non-planting rows have blank disks.
• Re-zero the air pressure with the fan off.
Increase fan speed.
Install blank disks and close shutters on unused rows.
charts.
®
monitor manual. See page 168.
per DICKEY-john® recommendations.
For GPS, check planter size programmed.
Lock-up clutch (page 47) until it can be overhauled or
replaced
Replace worn chain.
Low
Population,
Single Row
401-627M Table of Contents Index 2013-04-24
Shutter opening too wide - interfering with
meter pressurization
Shutter opening too narrow - starving meter
of seed (low seed pool)
Y-tube partially or completely closed,
reducing bulk flow to meter or causing
bridging
Meter starvation due to bridging at shutter Re-adjust for shutter bridging (page 81).
Meter starvation due to bridging above inlet,
caused by low seed delivery air flow
Meter starvation due to bridging above inlet,
caused by high levels of seed treatment
Adjust shutter to lower setting.
Adjust shutter to higher setting.
Open Y-tube for row
If seed is treated, increase seed lubricant.
Clear bridge (page 81). Check that seed delivery
system is getting sufficient fan air, and that there are
no other obstructions upstream.
Clear bridge (page 81). Increase seed lubricant.
Page 97
Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 93
Population Too Low
Problem Cause Solution
Low
Population,
Single
Row, cont.
Skips due to low meter pressurization at one
or several rows
Skips due to skipping chain Check for worn chain, worn idlers, and low chain slack
Skips due to debris in disk pockets Remove rain covers. Inspect and clean out disks.
Row has blank disk installed Replace with seeding disk.
Seed sensor obscured Clean out seed tube (see page 103).
Seed tube plugged Raise planter, expose bottom of seed tube and clean
Check shutter setting.
Check for excess wear on seed drop brush.
Check for loose or leaking pressure hose.
(page 114).
out.
Population Too High
Problem Cause Solution
Overall High
Population
Incorrect seed rate Check seed rate charts
Two seeds per pocket on the disk
(doubles), due to excess meter
pressurization
Two seeds per pocket on the disk
(doubles), due to pockets too large
for the seed
Air meter pressure too high due to
pressure sensor not zeroed properly.
Air pressure too high, false
information driving the
DICKEY-john® software.
False alarms or actual seed rate
errors due to monitor setup with
incorrect row count, spacing or
active rows
Incorrect cell count Replace seed disks with correct disks, or reset rate for
Incorrect speed sensor constant Perform speed calibration per DICKEY-john® monitor
Doubles due to incorrect disk for
crop or seed size
Sticky seeds: excess seed treatment Increase seed lubricant.
Methodically decrease the controlled air to the meter. See
“Fan and Adjustment” on page 63.
Select a disk with smaller pockets.
Re-zero the air pressure with the fan off. Make sure the
displayed pressure reads 0.00.
Compare the air pressure reported on the monitor console to
the mechanical gage. If they do not match:
• Inspect the1⁄4in sample lines from the row units up to the
sensor chamber for leaks.
• Make sure all non-planting rows have blank disks.
• Re-zero the air pressure with the fan off.
When troubleshooting population issues, always first rule out
seed monitor setup. Review planter configuration and
monitor setup.
current disks (if within range).
manual. See page 168.
Use recommended disk for crop and seed size.
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94 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Population Too High
Problem Cause Solution
Overall High
Population,
cont.
High
Population,
Single Row
Speed sensor angle. With planter lowered, check radar speed sensor angle per
DICKEY-john
Incorrect speed sensor constant Perform speed calibration per DICKEY-john® monitor
manual.
Overlapping passes Check marker extension (page 167).
For GPS, check planter size programmed.
Actual field size is different Population may be correct, and calculations are not.
Excess meter pressurization causing
doubles
Worn seed-drop brush and/or strip
brushes allowing excess seed to
pass
Incorrect seed disk with higher cell
count.
Check shutter.
Replace worn brushes.
Install correct disk.
®
recommendations.
Population Related
Problem Cause Solution
Overall
Population
Alarms
Mismatch
Between
Reported and
Furrow
Population
Excessive
Seed
Cracking
False alarms or actual rate errors
due to monitor setup with
incorrect [active] row count or
spacing
Incorrect cell count Replace seed disks with correct disks, or reset rate for current
Improper gap on speed sensor. Check speed sensor on planter for
Incorrect speed sensor constant Perform speed calibration per DICKEY-john®monitor manual.
Small seeds (example milo) are
not reliably sensed in the seed
tube
Seed tube sensor is not counting
all seeds
Seeds / revolution value in the
DICKEY-john® setup does not
match the disk cell count.
Incorrect seed pocket size Use correct disk for seed.
Damaged, old or dried-out seed Use new seed.
Unclean seed Use clean seed.
When troubleshooting population issues, always first rule out
seed monitor setup. Review planter configuration and monitor
setup.
disks (if within range).
gap from wheel. Improper gap can cause erratic speed signal
causing monitor to falsely report improper planting rate.
Run with rain covers in place to minimize ambient light
intrusion. Use the population adjustment factor in the Dickey
John monitor system to compensate for missed seeds. For
example, change the DICKEY-john® Population Adjustment
values from 100% to 130% or 140% as needed. Remember
to set this back to 100% for large seeds.
Clean the seed tube of graphite and dust buildup with long
narrow seed tube brush. Replace sensors that malfunction.
Correct the value in a setup screen or install the correct cell
count disc.
1
⁄
16
in to
1
⁄
in (1.6-3.2mm)
8
401-627M Table of Contents Index 2013-04-24
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Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 95
Population Related
Problem Cause Solution
Skips and
Bare Spots
After Turns
Unable to
adjust air
pressure low
enough.
Seed too
shallow or
scattered on
ground from a
single row
Twin Rows
were timed
but became
out of time.
Fan was turned off at turns Leave fan running. Meter Pressurization must be maintained
during turns, or seed will fall out of disk pockets.
Insufficient hydraulic flow to keep
fan running at speed required to
maintain meter pressurization
Lower limit reached in
DICKEY-john
Fan speed too high, vane rotated
to maximum.
Bottom of seed tube damaged. Replace seed tube. Avoid setting planter straight down. Use
Row not penetrating in tire tracks. Increase down force on parallel arm springs.
Opener depth too shallow. Change side depth wheel setting.
Timing will change when a
population change has been
made.
Chain has jumped. Check sprockets and chain for excessive wear or rusty stuck
®
software.
Check tractor capability against requirements (page 145).
If sufficient:
• Fold markers before engaging lift.
• Use a less aggressive lift rate.
• Monitor fan rpm during end-of-pass operations.
At User Level 2, reduce the controlled air lower limit in the
software.
Reduce the fan speed.
forward motion when lowering.
Re-time meters from the population based timing chart.
links.
System is
unable to
automatically
control air
meter
pressure.
Signal from air pressure sensor
lost. (failed sensor or wiring)
Air pressure may be controlled manually, consult
DICKEY-john® Planter/Drill Control manual, User Level 2/3.
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Page 100
96 YP4025A Table of Contents Index Great Plains Manufacturing, Inc.
Seed Delivery Troubleshooting
Problem Cause Solution
Single row doesn’t fill or keep up with
other rows.
Both rows on one meter outlet low or
not keeping up with other rows.
Multiple rows fail for lack of seed. Fan speed too high/too low. Check/adjust fan speed.
Single or multiple hoses plugging just
ahead of airbox.
All rows fail. Lack of seed. Fan speed too high. Adjust fan speed.
1, 2, 3, or more outlets fail.
Outlets can be side-by-side or random.
Plugging may also move from one
outlet to another.
Little or no seed to a lot of rows with
heavily treated seed.
Y tube is bent/angled off feed
pipe.
Drop tube to meter is too long,
causing seed to pool and plug
hose or Y-tube.
Blockage in air slot in top of
airbox.
Bad hose routing between
delivery hose and airbox on wing.
Out of seed. Add seed.
Fan speed too high/too low. Check/adjust fan speed.
Possible air leak. Check for air leak downstream
Foreign matter in seed chamber in
bottom of airbox.
Seed treatment sticky. Add Ezee Glide Plus to seed to dry out
Treatment mixed unevenly and
plugging outlets.
Loosen pipe and spin so the bend is
straight down and Y-tube is not pointing
to front or rear of air pipe.
Shorten hose (with planter raised, but
row units lowered, to ensure hose is
not too short).
Clear by using a long skinny tool and
taking hose off through hose outlet.
It may be necessary to take top off
airbox or use side access doors to
clear junk from slot.
Correct hose routing.
between box and top of meter.
Extremely high populations may
require slightly reduced field speed.
Clean out seed chamber.
seed treatment.
Clean out seed. Re-mix.
401-627M Table of Contents Index 2013-04-24
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