Great Plains PFH-20 Operator Manual
Operator’s Manual
PH-15, PH-20, PFH-15 and PFH-20
Coulter Command System
Manufacturing, Inc.
P.O. Box 5060 ● Salina, Kansas 67402-5060
Read the operator’s manual entirely. When you see this symbol, the subsequent in-
!
structions and warnings are serious- follow without exception. Your life and the lives of
others depend on it!
© Copyright 2000 Printed
5/31/2001
12611
Cover illustration may show optional equipment not supplied with standard unit.
148-384M
Table of Contents
Table of Contents
Great Plains Mfg., Inc.
Important Safety Information . . . . . . . . . . . . .1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Description of Unit. . . . . . . . . . . . . . . . . . . .4
Using This Manual. . . . . . . . . . . . . . . . . . . .4
Definitions . . . . . . . . . . . . . . . . . . . . . . .4
Owner Assistance . . . . . . . . . . . . . . . . . . . .4
Section 1 Assembly and Setup. . . . . . . . . . . .5
Prestart Checklist . . . . . . . . . . . . . . . . . . . .5
Depth Sensing Wheel . . . . . . . . . . . . . . . . .5
Sensor Box . . . . . . . . . . . . . . . . . . . . . .6
Gauge Wheel Lift Cylinder . . . . . . . . . .7
Speed Sensor . . . . . . . . . . . . . . . . . . . .7
Lift Switch . . . . . . . . . . . . . . . . . . . . . . .8
Wiring Harness . . . . . . . . . . . . . . . . . . .8
Tongue Cylinder . . . . . . . . . . . . . . . . . .9
Hydraulic Control Valve. . . . . . . . . . . .10
Hydraulic Connections . . . . . . . . . . . .11
Control Box . . . . . . . . . . . . . . . . . . . . .12
Sensor Box Adjustments. . . . . . . . . . . . . .13
Section 2 Operating Instructions . . . . . . . . .14
Load Sensing Hydraulics . . . . . . . . . . . . . 14
Hydraulic Hook-Up & Function. . . . . . . . . 14
Operation of Electronic Controls. . . . . . . . 15
Field Adjustments. . . . . . . . . . . . . . . . . . . 16
Lift Switch. . . . . . . . . . . . . . . . . . . . . . 16
Speed Sensor . . . . . . . . . . . . . . . . . . 17
Hydraulic Valve . . . . . . . . . . . . . . . . . 17
Section 3 Troubleshooting. . . . . . . . . . . . . . 18
System Schematics . . . . . . . . . . . . . . . . . 20
Hydraulic Schematic . . . . . . . . . . . . . 20
Electrical Schematic. . . . . . . . . . . . . . 21
Section 4 Maintenance & Lubrication. . . . . 22
Maintenance. . . . . . . . . . . . . . . . . . . . . . . 22
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . 22
Depth Sensing Arm Wheel Pivot . . . . . . . 22
Axle Bearings . . . . . . . . . . . . . . . . . . . . . . 22
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Torque Values Chart. . . . . . . . . . . . . . . . . 23
© Copyright 2000 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.
The following are trademarks of Great Plains Mfg., Inc.: Application Systems, Ausherman, Land Pride, Great Plains, Seed-Lok
All other brands and product names are trademarks or registered trademarks of their respective holders.
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M 6/21/2004
Great Plains Manufacturing, Incorporated T r ademarks
Printed in the United States of America.
Great Plains Mfg., Inc.
Important Safety Information
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. The signal words are:
!
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.
Keep Riders
Off Machinery
Riders obstruct the operator’s view.
Riders could be struck by foreign
objects or thrown from machine.
▲ Never allow riders on implement.
▲ Never allow children to operate
equipment.
For Your Protection
▲ Thoroughly read and understand
Safety Decals, page 4. Read all
instructions noted on decals.
OFF
Shutdown and Storage
▲ Lower machine to ground, put
tractor in park, turn off engine,
and remove key.
▲ Detach and store implement in an
area where children normally do
not play. Secure implement with
blocks and supports.
Handle
Chemicals Properly
Agricultural chemicals can be dangerous. Improper use can seriously
injure persons, animals, plants, soil
and property.
▲ Wear protective clothing.
▲ Handle all chemicals with care.
▲ Follow instructions on container
label.
▲ Avoid inhaling smoke from any
type of chemical fire.
▲ Store or dispose of unused chem-
icals as specified by chemical
manufacturer.
6/21/2004
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M
1
Important Safety Information
Great Plains Mfg., Inc.
Use Safety
Lights and Devices
Slow-moving tractors, self-propelled
equipment 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.
Transport
Machinery Safely
Maximum transport speed for implement is 20 mph. 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.
Use A Safety Chain
▲ Use a safety chain to help con-
trol drawn machinery should it
separate from tractor drawbar.
▲ Use a chain with a strength rat-
ing equal to or greater than the
gross weight of towed machinery.
▲ Attach chain to tractor drawbar
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.
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 implement to ground, put
tractor in park, turn off engine,
and remove key before performing
maintenance.
▲ Allow implement to cool completely.
▲ 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 implement before operation.
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M 6/21/2004
2
Great Plains Mfg., Inc.
Important Safety Information
Prepare for Emergencies
▲ Be prepared if a fire starts.
▲ Keep a first aid kit and fire extin-
guisher handy.
▲ Keep emergency numbers for
doctor, ambulance, hospital and
fire department near phone.
911
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 radio headphones
while operating machinery.
Avoid High
Pressure Fluids Hazard
Escaping fluid under pressure can
penetrate skin, causing serious
injury.
▲ Avoid the hazard by relieving
pressure before disconnecting
hydraulic lines.
▲ Use a piece of paper or card-
board, 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, see a doc-
tor immediately. Any fluid injected
into the skin must be surgically
removed within a few hours or
gangrene may result.
Safety at All Times
Thoroughly read and understand this
manual before operating implement.
Refer to Safety Decals, page 4. Read
all instructions noted on decals.
▲ Be familiar with all implement
functions.
▲ Operate implement from driver’s
seat only.
▲ Do not leave tractor or implement
unattended with engine running.
▲ Do not dismount a moving tractor.
Dismounting a moving tractor could
cause serious injury or death.
▲ Do not stand between the tractor
and implement 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 raising implement. Make
sure all persons are clear of working area.
▲ Do not turn tractor too tight, caus-
ing implement to ride up on
wheels.
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 to allow 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.
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Introduction
Introduction
Great Plains Mfg., Inc.
Great Plains welcomes you to its growing family of new
product owners. This implement has been designed with
care and built by skilled workersusing quality materials.
Proper setup, maintenance and safe operating practices
will help you get years of satisfactory use from the machine.
Description of Unit
The Precision Hitch Coulter CommandSystem couplesa
microprocessor with electro-hydraulicsto provide a stateof-the-art system for maintaining coulter depthregardless
of the terrain or soil type. It also provides coulter depth adjustment from the tractor cab.
The Coulter Command System contains a depth sensing
wheel, an electronic control box, a speed sensor, a depth
sensorbox,a lift controlswitch,a wiring harness, atop link
and a hydrauliccontrol valve. It uses the tongue cylinder
from your Precision Hitch.
This manual applies to the following:
• 148-382A Precision Hitch Coulter Command,
Non Fertilizer
• 148-383A Precision Hitch Coulter Command, For
Fertilizer
Referto the Precision Hitchoperator’s manualfor detailed
informationonsafelyoperating,adjusting, troubleshooting
and maintaining the Precision Hitch. Refer to the parts
manual for Coulter Command part identification.
• 148-365M PH-15, PH-20, PFH-15 and PFH-20
Operator’s Manual
• 148-365P PH-15, PH-20, PFH-15 and PFH-20
Parts 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.
Your machine’sparts 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.
Your Great Plains dealer wants youto 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 dealershipservice manager.Make sure they are aware of anyproblems so
they can assist you.
2. If you are still unsatisfied, seek out the owner or general manager of the dealership.
3. For further assistance write to:
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5060
Using This Manual
This manual will familiarize you with safety, assembly, operation, adjustments, troubleshooting and maintenance.
Readthis manualand followthe recommendationsto help
ensure safe and efficient operation.
Theinformation in this manual iscurrent at printing. Some
parts maychange to assure top performance.
Definitions
The following terms are used throughout this manual.
Right-handand left-hand as used in thismanual are deter-
mined by facing the direction the machinewill travel while
in use unless otherwise stated.
IMPORTANT: A crucial point of information related to
the preceding topic. For safe and correct oper ation,
read and follow the directions provided before continuing.
NOTE: Useful information related to the preceding topic.
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M 6/21/2004
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Great Plains Mfg., Inc.
Section 1 Assembly and Setup
Section 1 Assembly and Setup
Prestart Checklist
Check
All major frame components
Fasteners and pins that were shipped with the Coulter Command System.
NOTE: All hardware from the factory has been installed in the
location where it will be used. If a part or fastener is temporarily
removed for assembly reasons, remember where it goes.Keep
the parts separated.
Have a minimum of 2 people at hand while assembling the
Coulter Command System.
Have a forklift or loader along with chains and safety stands
ready for the assembly task.
If you are unsure where a fastener is used, refer to the Parts
Manual to identify it.
Depth Sensing Wheel
If your Precision Hitch is equipped with liquid fertilizer
(PFH), the fertilizer drive wheel doubles as the coulter
depth sensing wheel and will require additional sensor assembly and adjustment.
If you do not have the liquid fertilizer option (PFH), the
coulter command will contain a coulter depth sensing
wheel which is subassembled and preadjusted.
See Figure 1-1.
Installthe coulter depthsensing wheel assembly(1) to the
front 4” x 4” coulter tool bar tube with the two 5/8 x 6 inch
u-bolts (2), lock washers (3) and nuts (4).
Position the center of the coulter depth sensing wheel
mount bracket2 1/4 inches to the rightof the centerof the
Precision Hitch beam. This will leave about 2 3/4 inch
clearancebetweenthe inside ofthe depthsensing tireand
the edge of the hitch center beam.
6/21/2004
Figure 1-1
Depth Sensing Wheel
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M
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5
Section 1 Assembly and Setup
Great Plains Mfg., Inc.
Sensor Box
Ifthe sensor boxisnot preassembledto the depthsensing
wheel, refer to Figure 1-2 and the following instructions.
1. Assemble sensor spindle (1) to left end of fertilizer
drivewheel rockshaftwith three1/4 x3/4 inch bolts(2)
and lock washers(3).
2. Bolt the bearing (4) betweentwo flangettes (5) andto
theback side of thesensor mount plate (6) with5/16 x
3/4 inch carriage bolts (7), lock washers (8) and nuts
(9). Do not tighten nuts at this time.
NOTE: Position the heads of the bolts against the
flangettes with lock washers and nuts pointing outward.
Locking collar on bearing should point away from the sensor mount plate and toward the coulter depth sensing
wheel.
3. Place rubber gasket (10) between sensor box (11)
and the sensor mount plate (6). Screw sensor box to
sensor mount plate with #10 x 7/16 inch pan head
screws (12) and star lock washers(13).
4. Remove cover from sensor box and inspect the internal linkages.The circular disk (14) should be linked to
the flat bar (15) with a formed round bar link (16).
Make sure the round bar link is in place and secured
witha spring clip extensionspring(17) that is connected between the circular disk and the flat bar through
the small holes.
5. Slide bearing and sensor mount plate subassembly
oversensorspindle(1), andbolt sensormountplate to
drive wheel mount bracket with 1/2 x 1 1/2 inch bolts
(18), lock washers(19) and nuts (20).
6. Place circular disk (13) over threaded end of sensor
spindle (1) and install a 3/8 inch washer (21) and
flange nut (22). Do not tighten flange nut at this time.
7. With the circular disk inplace, slide the sensormount
plate subassembly in or out until the vertical flat bar
link (15) and the circular disk are aligned.
8. Tighten two set screws on the bearing (4) to hold the
subassembly in place.
9. Tighten the flangette bolts (7) being careful not to
damage the internal linkages.
10. Set sensor box cover and cover screws aside and
continue with speed sensor assembly.
Figure 1-2
Sensor Box
PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M 6/21/2004
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