GREAT PLAINS YP-40 Series User manual

Manufacturing, Inc.
www.greatplainsmfg.com
© Copyright 2020 Printed 2020-12-08 401-805M
EN
Table of Contents Index
Table of Contents Index
ORIGINAL INSTRUCTIONS
Operator Manual
YP4425A
44 Foot 3-Section Yield-Pro® Planter
with Air-Pro® 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!
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Illustrations may show optional equipment not supplied with standard unit, and
may show the similar Model YP40 or YP40A, where the immediate topic
applies to all.

Table of Contents Index
Table of Contents Index
Machine Identification
Record your machine details in the log below. If you replace this manual, be sure to transfer this information
to the new manual.
If you or the dealer have added options not originally ordered with the machine, or removed options that were
originally ordered, the weights and measurements are no longer accurate for your machine. Update the
record by adding the machine weight and measurements with the option(s) weight and measurements.
Dealer Contact Information
Model Number
Serial Number
Machine Height
Machine Length
Machine Width
Machine Weight
Year of Construction
Delivery Date
First Operation
Accessories
Name:
Street:
City/State:
Telephone:
Email:
Dealer’s Customer
No.:
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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© Copyright 2009, 2010, 2011, 2012, 2014, 2015, 2016, 2017, 2019, 2020. 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.
Trademarks of Great Plains Manufacturing, Inc. include: AccuShot, Max-Chisel, Row-Pro,
Singulator Plus, Short Disk, Swath Command, Terra-Tine, Ultra-Chisel, and X-Press.
Registered Trademarks of Great Plains Manufacturing, Inc. include: Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone,
Nutri-Pro, Seed-Lok, Solid Stand, Terra-Guard, Turbo-Chisel, Turbo-Chopper, Turbo-Max, Turbo-Till, Ultra-Till, Whirlfilter, and Yield-Pro.
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
Table of Contents
Important Safety Information.................................................1
Safety Decals ....................................................................6
Introduction...........................................................................12
Models Covered ..............................................................12
Description of Unit ...........................................................12
Intended Usage ........................................................12
Document Family .....................................................12
Using This Manual...........................................................12
Definitions.................................................................12
Owner Assistance............................................................13
Further Assistance...........................................................13
Preparation and Setup .........................................................14
Initial Setup......................................................................14
Post-Delivery/Seasonal Setup.........................................14
Pre-Planting Setup ..........................................................14
Hitching Tractor to Planter...............................................15
Hydraulic Hose Hookup............................................15
Electrical Hookup.............................................................17
Hitching with 3-Point.................................................17
Hitching with Hydraulic Tongue (Option)..................18
Raising/Lowering Tongue.........................................18
Parking Stands ................................................................19
Tank Cart Hitching....................................................19
Making Fertilizer Connections ..................................20
Heights and Leveling .......................................................20
Set Tongue Height ...................................................20
Marker Setup ...................................................................21
Fertilizer Drive Lock Up ...................................................22
Operating Instructions .........................................................23
Pre-Start Checklist...........................................................23
Fold/Unfold Lock Overview..............................................23
Unfolding the YP4425A Planter.......................................24
Raising/Lowering Planter.................................................26
Raising Planter .........................................................27
Lowering Planter ......................................................27
Installing Lift Cylinder Locks.....................................28
Rephasing Lift System .............................................28
Local Float on Hydraulic Tongue..............................28
Folding the YP4425A Planter ..........................................29
Rephasing Fold System ...........................................31
Transporting the Planter ..................................................32
Typical YP4425A Planter Weights ...........................33
Transport Checklist ..................................................33
Loading Materials ............................................................34
Walkboard and Ladder .............................................34
Auxiliary Hydraulics..................................................35
82 Bushel Hopper Operation....................................36
150 Bushel Hopper Operation..................................37
Changing the Seed Box or Hopper ..........................38
Air System Operation ......................................................40
Air System Overview................................................41
Airbox Operation ......................................................44
Weight Transfer Operation (Option) ................................44
Monitor Operation............................................................45
3-Section Electric Clutch Operation ................................45
Electric Clutch Lock-Up............................................46
Swath Command™ Clutch Operation .............................46
Air-Pro® Meter Operation ................................................47
Meter Operation .......................................................47
Fertilizer Tanks (Option)...........................................48
Trailer Operations............................................................49
Field Set-Up Checklists ...................................................50
Caster Locks - Field Operations...............................51
Field Operation................................................................52
Unfolding Markers ...........................................................53
Unfolding Single Marker...........................................53
.................................................................................53
Row Marker Operation ....................................................54
Folding the Markers .................................................54
Unusual Marker Operations .....................................54
Monitor Operation............................................................54
Planting ...........................................................................54
Checking Planting Rate...................................................54
Short-Term Parking .........................................................55
Long-Term Storage .........................................................56
Storage: Fertilizer Option .........................................56
Adjustments..........................................................................57
Setting Material Rates .....................................................58
Planting Rate............................................................58
Fertilizer Rate...........................................................58
Height Switch Adjustment ...............................................59
Marker Adjustments ........................................................60
Marker Disk Adjustment ...........................................60
Fans ................................................................................61
Fine-Tuning Meter Pressurization............................63
Seed Delivery Fan Adjustments...............................63
Liquid Fertilizer Adjustments ...........................................64
Ground Drive Pump .................................................65
Fertilizer Relief Valve ...............................................66
Fertilizer Orifice Plates .............................................66

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25 Series Row Unit Adjustments .....................................67
Row Unit Down Pressure .........................................68
Unit-Mount Row Cleaner Adjustments .....................70
Coulter Adjustments .................................................71
Row-Unit Opener Disk Adjustments.........................73
Side Gauge Wheel Adjustment ................................74
Seed Meter Setup and Adjustment ..........................76
Air-Pro® Meter Disk Installation................................78
Seed Firmer Adjustments.........................................80
Press Wheel Adjustment ..........................................81
Troubleshooting ...................................................................83
Planting Rate Problems...................................................83
Seed Pool Troubleshooting .............................................84
Seed Pool Recovery.................................................85
Population Troubleshooting Charts .................................86
Maintenance and Lubrication ..............................................94
Maintenance ....................................................................94
Material Clean-Out ..........................................................95
Air Box Clean-Out ....................................................95
Air System Clean-Out...............................................95
Meter Clean-Out.......................................................96
Meter Brush Maintenance ...............................................98
Meter Brush Replacement........................................99
Seed Disc Maintenance .........................................100
Air Box Residue Clean-Out ...........................................101
Hydraulic Maintenance ..................................................102
Hydraulic Drive Maintenance .................................102
Marker Maintenance......................................................103
Marker Shear Bolt Replacement ............................103
Marker Grease Seal Cap........................................103
Wing Leveling ................................................................103
Chain Maintenance........................................................106
Meter Drive Chain ..................................................106
Spreaders and Scrapers................................................107
Side Gauge Wheels.......................................................107
Seed Flap Replacement ................................................108
Fertilizer System............................................................109
Liquid Fertilizer Strainer .........................................109
Lubrication.....................................................................110
Seed Lubricants ............................................................120
Options ................................................................................121
Hydraulic Tongue ..........................................................121
Markers .........................................................................122
Fertilizer Systems..........................................................123
Pintle Trailer Hitch Weldment........................................127
82 or 150 Bu. Seed Hopper...........................................128
Rigid Row Cleaners ...............................................130
Unit-Mounted Disc Coulters ...................................131
Gauge Wheel Scrapers..........................................131
Inside Disc Scrapers ..............................................132
Clean-Out Container ..............................................134
Seed Tube Brush ...................................................134
Seed Firmers..........................................................134
Row Unit Press Wheels .........................................134
Appendix A - Reference Information ................................135
Specifications and Capacities .......................................135
Tire Information .............................................................135
Torque Values Chart .....................................................136
Hydraulic Diagrams .......................................................137
Chain Routing................................................................144
Seed Hose Routing .......................................................148
Appendix B - Initial and Option Setup ..............................150
Pre-Delivery Items.........................................................150
Initial Setup....................................................................151
Seed Monitor Console Installation .........................151
Weight Transfer Shipping Links .............................151
Marker Extension ..........................................................152
...............................................................................152
Hopper Level Sensor Installation ...........................152
Radar Calibration ...................................................153
Appendix C - Option Installation.......................................154

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YP4425A Table of Contents Index 1
Important Safety Information
Look for Safety Symbol
The SAFETY ALERT SYMBOL indicates there is a
potential hazard to personal safety involved and extra
safety precaution must be taken. When you see this
symbol, be alert and carefully read the message that
follows it. In addition to design and configuration of
equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence and
proper training of personnel involved in the operation,
transport, maintenance and storage of equipment.
Be Aware of Signal Words
Signal words designate a degree or level of hazard
seriousness.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This signal word is limited to the most extreme situations,
typically for machine components that, for functional
purposes, cannot be guarded.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury, and includes hazards that are exposed when
guards are removed. It may also be used to alert against
unsafe practices.
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
Prepare for Emergencies
Be prepared if a fire starts
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctor, ambulance, hospital
and fire department near phone.
Be Familiar with Safety Decals
Read and understand “Safety Decals” on page 6,
thoroughly.
Read all instructions noted on the decals.
Keep decals clean. Replace damaged, faded and illegible
decals.

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YP4425A Table of Contents Index Important Safety Information 2
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.
Confined Space
With grain or fertilizer present, and once used for
hazardous fertilizers, or seeds with hazardous
treatments, your hoppers may become
“permit-required confined spaces”
under applicable statutes, regulations, insurance rules or
business policy.
A full, encrusted or bridged grain hopper can be a rapid
suffocation hazard.
Even when empty, hazardous fumes or low oxygen may be
present. You can be quickly overcome even with the
hopper lid open.
Do not enter a hopper for material loading, material
unloading, hopper cleaning or meter maintenance.
Clean hopper by power washing from outside the hopper
top.
Remove large obstructions, perform meter maintenance,
and perform sensor maintenance by removing meters from
bottom of empty hopper.
+

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Use A Safety Chain
(Optional hydraulic hitch only. 3-Point has no chain.)
Use a safety chain to help control drawn machinery
should it separate from tractor draw-bar.
Use a chain with a strength rating equal to or greater than
the gross weight of towed machinery.
Attach chain to tractor draw-bar support or other
specified anchor location. Allow only enough slack in
chain to permit turning.
Replace chain if any links or end fittings are broken,
stretched or damaged.
Do not use safety chain for towing.
Avoid High Pressure Fluids
Escaping fluid under pressure can penetrate the skin,
causing serious injury.
Avoid the hazard by relieving pressure before
disconnecting hydraulic lines.
Use a piece of paper or cardboard, NOT BODY PARTS, to
check for suspected leaks.
Wear protective gloves and safety glasses or goggles when
working with hydraulic systems.
If an accident occurs, seek immediate medical assistance
from a physician familiar with this type of injury.
Tire Safety
Tire changing can be dangerous and should be
performed by trained personnel using correct tools and
equipment.
When inflating tires, use a clip-on chuck and extension
hose long enough for you to stand to one side–not in front
of or over tire assembly. Use a safety cage if available.
When removing and installing wheels, use wheel-handling
equipment adequate for weight involved.
Use Safety Lights and Devices
Slow-moving tractors and towed implements can create
a hazard when driven on public roads. They are difficult
to see, especially at night.
Use flashing warning lights and turn signals whenever
driving on public roads.
Use lights and devices provided with implement

2020-12-08 Table of Contents Index 401-805M
YP4425A Table of Contents Index Important Safety Information 4
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.
Transport Machinery Safely
•Maximum transport speed for implement is 20 mph
(32 km/h).
•Maximum speed in turns is 13 mph (22 km/h).
•Maximum speed when backing is 3 mph (5 km/h).
•Some rough terrains require a slower speed. Sudden
braking can cause a towed load to swerve and
upset.
•Do not transport the cart in a train with material in the
tank.
•Do not back the planter if PFC cart is attached.
Do not exceed 20 mph (32 km/h). 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 “Appendix A - Reference
Information” on page 135.
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.
32
22
5

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2020-12-08 Table of Contents Index 401-805M
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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YP4425A Table of Contents Index Important Safety Information 6
Safety Decals
Safety Reflectors and Decals
Your implement comes equipped with all lights, safety
reflectors and decals in place. They were designed to
help you safely operate your implement.
Read and follow decal directions.
Keep lights in operating condition.
Keep all safety decals clean and legible.
Replace all damaged or missing decals. Order new
decals from your Great Plains dealer. Refer to this
section for proper decal placement.
When ordering new parts or components, also request
corresponding safety decals.
Slow Moving Vehicle Reflector
818-055C
On the back of the walkboard platform;
one total
Red Reflectors
838-266C
On rear face of axle (below Daytime reflectors);
two total
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.
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YP4425A Table of Contents Index Important Safety Information 7
2020-12-08 Table of Contents Index 401-805M
Daytime Reflectors
838-267C
On rear face of axle (above Red reflectors);
two total
Amber Reflectors
838-265C
On the front of the center section front lower tool bars,
on the rear of the wing tool bars, and
on the sides of the seed cart frame;
six total.
Danger: Read Manual
848-512C
On tongue at hitch;
1 total
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848-512C
WARNING:Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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YP4425A Table of Contents Index Important Safety Information 8
Danger: Crushing Hazard
818-590C
Top center of 3-point hitch (not present with hydraulic
tongue option);
one total
Danger: Electrocution Hazard
838-599C
One each side of marker upright arm, each side;
four total
Warning: Pinch/Crush
818-045C
On front faces of rockshaft, above gauge wheels,
On inside and outside face, wing caster weldments,
On side face of rear axle weldment;
eight total
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YP4425A Table of Contents Index Important Safety Information 9
2020-12-08 Table of Contents Index 401-805M
Warning: Speed
818-188C
On front of center section,
one total
Warning: Pinch/Shear Hazard
818-579C
Front and rear faces of inner marker arms;
four total
Warning: Overhead Marker
818-580C
Front and rear faces of inner marker arms;
four total
34046
818-188C Rev.C
Do Not exceed 20 mph maximum transport
speed. Loss of vehicle control and/or machine
can result.
To Prevent Serious Injury or Death:
EXCESSIVE SPEED HAZARD
WARNING
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YP4425A Table of Contents Index Important Safety Information 10
Warning: High Pressure Fluid
838-094C
On side of tongue at hitch;
one total
Caution: Transport Locks
818-351C
Hitch tongue;
one total
Caution: Tires Not A Step
818-398C
One front face each wing gauge wheel,
One each side front center axle,
One each rear face of rear caster arms;
8 total
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YP4425A Table of Contents Index Important Safety Information 11
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Caution: Read Operator’s Manual
818-587C
On center tool bar; one total
Caution: Pressure and Torque
838-426C
On outside rim each transport tire;
10 total
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WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Read Owner’s Manual before using machine.
Stand clear when folding and unfolding markers.
Stand clear when raising and lowering machine.
Keep all safety shields and devices in place.
Keep hands, feet, and clothing away from
Never ride on machine.
Always lower or properly support machine
Escaping hydraulic fluid can cause serious
Review safety instructions with all operators
moving chains and sprockets.
BEFORE servicing.
818-587C Rev.B
injury.
annually.
CAUTION
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YP4425A Table of Contents Index 12
Introduction
Great Plains welcomes you to its growing family of new
product owners. The 44 Foot 3-Section Yield-Pro®
Planter (YP4425A 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
Description of Unit
The YP4425A Planter is a pull-type implement with
optional mounted or pull-behind fertilizer capability. The
YP4425A includes 25 Series openers with Air-Pro®
meters supporting a wide choice of seed discs. The
Planter accepts optional unit mounted accessories. The
Planter folds for transport.
Intended Usage
Use the YP4425A 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 YP4425A.
Document Family Using This Manual
This manual will familiarize you with safety, assembly,
operation, adjustments, troubleshooting, and
maintenance. Read this manual and follow the
recommendations to help ensure safe and efficient
operation.
The information in this manual is current at printing.
Some parts may change to assure top performance.
Definitions
The following terms are used throughout this manual.
A crucial point of information related to the preceding topic.
Read and follow the directions to remain safe, avoid serious
damage to equipment and ensure desired field results.
Useful information related to the preceding topic.
Right-hand and left-hand as used in
this manual are determined by facing
the direction the machine will travel
while in use unless otherwise stated.
An orientation rose in some line art
illustrations shows the directions of:
Up, Back, Left, Down, Front, Right.
YP4425A-2422 24-Row, 22 inch (55.9 cm)
Figure 1
YP4425A Planter
34086
L
RU
D
F
B
L
R
401-805M Owner’s Manual (this document)
401-805B Seed Rate Charts
401-805P Parts
DICKEY-john® IntelliAg® Manuals:
11001-1662 Planter/Drill Control, User Level 1
11001-1501A Planter/Drill Control, User Level 2&3
110011538 Quick Start Guide: YP4425A-2420/2422
11001-1126 DICKEY-john® hopper level sensor install
403-857M Swath Command™ Operator Manual
403-860M Row-Pro™ Operator Manual
U
D
F
B
L
R

YP4425A Table of Contents Index Introduction 13
2020-12-08 Table of Contents Index 401-805M
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 YP4425A Planter model and serial number
here for quick reference:
Model Number:__________________________
Serial Number: __________________________
Further Assistance
Great Plains Manufacturing, Inc. and your Great Plains
dealer want you to be satisfied with your new YP4425A.
If for any reason you do not understand any part of this
manual or are otherwise dissatisfied, please take the
following actions first:
1. Discuss the matter with your dealership service
manager. Make sure they are aware of any problems
so they can assist you.
2. If you are still unsatisfied, seek out the owner or
general manager of the dealership.
If your dealer is unable to resolve the problem or the
issue is parts related, please contact:
Great Plains Service Department
1525 E. North St.
P.O. Box 5060
Salina, KS 67402-5060
Or go to www.greatplainsag.com and follow the contact
information at the bottom of your screen for our service
department.
Figure 2
Serial Number Plate
31467

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YP4425A Table of Contents Index 14
Preparation and Setup
This section helps you prepare your tractor and
YP4425A 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 150 for pre-delivery items (normally completed by
dealer), and first-time/infrequent setup tasks, including:
•Install seed monitor console in tractor (page 151).
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:
•Wing leveling and alignment (page 103).
•Radar calibration (page 153).
•De-grease exposed cylinder rods if so protected at
last storage.
Pre-Planting Setup
Complete this checklist before routine setup:
Read and understand “Important Safety
Information” on page 1.
Check that all working parts are moving freely, bolts
are tight, and cotter pins are spread.
Check that all zerks are in place and lubricated. See
“Lubrication” on page 110.
Check that all safety decals and reflectors are
correctly located and legible. Replace if damaged.
See “Safety Decals” on page 6.
Inflate tires to pressure recommended and tighten
wheel bolts as specified. See “Tire Information” on
page 135.

YP4425A Table of Contents Index Preparation and Setup 15
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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 have color-coded handle
grips to help you hookup hoses to your tractor outlets.
Hoses that go to the same remote valve are marked with
the same color.
If the optional weight transfer system is not installed, or a
PTO pump is installed, continue at “Current Style Color
Coded Hose Handles” on page 16.
The weight transfer cylinders must be free to flex during
all planter movements where the system is not in active
use.
To allow cylinder flex:
•connect at least the fan case drain and fan return
lines to suitable receptacles (see page 16), or
•install the shipping links (see page 121).
Machine Damage Risk:
Do not move the planter with a hydraulically locked weight
transfer system. Relieve the system or install shipping links.
If the cylinders are not free to flex, oil loss will result from even
minor movement flexing.
Figure 3
Color Coded Hose Handles
31733
Figure 4
Weight Transfer System
36421
858-295C
DO NOT MOVE PLANTER FOLDED
OR UNFOLDED WITHOUT CONNECTING
FAN CASE DRAIN AND LOW PRESSURE
RETURN TO THE TRACTOR OR
INSTALLING WEIGHT TRANSFER
SHIPPING LINKS.FAILURETO DO
SO CAN RESULT IN DAMAGETO
WEIGHT TRANSFER CIRCUIT.
NOTICE

2020-12-08 Table of Contents Index 401-805M
YP4425A Table of Contents Index Preparation and Setup 16
Current Style Color Coded Hose Handles
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 a cylinder base end.
Hoses with 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.
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.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
1. Attach case drain hose to low pressure drain
connection.
Case drain hose has the smaller 1/4inch 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 (1.06 inch/2.7 cm diameter) quick coupler.
Machine Damage Risk:
DO NOT connect the case drain line to a
power-beyond-port.
3. Connect hydraulic hoses to tractor remotes.
Color Hydraulic Function
Green Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Black Fan
Yellow Hydraulic Drive
Weight Transfer (option)