Drive System
| Symptom | Problem | Solution |
|
Both Wheels Lack Pulling Ability On Grade or Pulling
Out Of Ditch
| Loose or worn controls |
Check controls.
Set switch to FIELD
SPEED 1 position.
|
| |
Internal park brakes dragging
|
See your John Deere
dealer.
|
| |
Faulty relief valves
|
See your John Deere
dealer.
|
| |
Failed motors/pumps
|
See your John Deere
dealer.
|
| |
Low charge pressure
|
See "Low Charge Pressure"
in this section.
|
| |
Improper tire inflation
|
See tire inflation pressures.
|
| |
Hydraulic oil overheated
|
See "Hydraulic Oil Overheats"
in this section.
|
|
Both Wheels Will Not Pull In Forward or Reverse
| Low on oil |
Check hydrostatic oil
level and final drives.
|
| |
Tow disconnects still out
|
Engage final drives.
|
| |
Steering controls worn or loose
|
Check control lever
and steering for loose, worn, or broken ball joints and ball joint
rods.
|
| |
Internal park brakes dragging
|
See your John Deere
dealer.
|
| |
Faulty relief valves
|
See your John Deere
dealer.
|
| |
Low charge pressure
|
See "Low Charge Pressure"
in this section.
|
| |
Failed pump
|
See your John Deere
dealer.
|
| |
Broken pump driveline
|
See your John Deere
dealer.
|
|
One Wheel Does Not Pull in Forward or Reverse
| Tow disconnect still out |
Engage final drive.
|
| |
Steering controls worn or loose
|
Check control lever
and steering for loose, worn, or broken ball joints and ball joint
rods.
|
| |
Internal park brakes dragging
|
See your John Deere
dealer.
|
| |
Failed pump, motor, or final drive
|
See your John Deere
dealer.
|
| |
Faulty relief valve
|
See your John Deere
dealer.
|
|
Excessive Noise From Drive System
| LOW ENGINE IDLE/HIGH ENGINE IDLE switch in high engine
idle position |
Set switch to LOW ENGINE
IDLE position.
|
| |
Brakes noisy
|
See “Dragging
Or Overheating” in BRAKES, in this section.
|
| |
Faulty pump or motor
|
See your John Deere
dealer.
|
| |
Cab mounts defective
|
See your John Deere
dealer.
|
|
Windrower Will Not Run Full Speed in Low engine idle
or High engine idle.
| Low charge pressure |
See “Low Charge
Pressure” in this section.
|
|
Leaking Seals or Covers On Pumps or Motors
| Case pressure too high |
Check for kinked hose
or other restrictions in drain lines.
|
|
Low Charge Pressure
| Plugged charge pump suction screen in reservoir
|
Clean screen.
|
| |
Low on oil
|
Check for leaks and
correct. Fill reservoir.
|
| |
Malfunctioning priority valve
|
See your John Deere
dealer.
|
| |
Worn charge pump
|
Replace.
|
| |
Plugged filter
|
Replace filter.
|
| |
Malfunctioning shuttle valve in platform drive motor
|
Check motor for sticking
valve spools or broken springs.
|
|
Low Charge Pressure
| Plugged charge pump suction screen in reservoir
|
Clean screen.
|
| |
Low on oil
|
Check for leaks and
correct. Fill reservoir.
|
| |
Malfunctioning priority valve
|
See your John Deere
dealer.
|
| |
Worn charge pump
|
Replace.
|
| |
Plugged filter
|
Replace filter.
|
| |
Malfunctioning shuttle valve in platform drive motor
|
Check motor for sticking
valve spools or broken springs.
|
|
Hydraulic Oil Overheats
| Low oil supply |
Fill system with correct
oil.
|
| |
Operating in HIGH ENGINE IDLE range over non-flat terrain
|
Set ground drive switch
to LOW ENGINE IDLE range.
|
| |
Oil cooler air passages clogged
|
Clean oil cooler.
Clean air screen.
|
| |
Clogged hydrostatic filter
|
Replace filter.
|
| |
Platform drive motor shuttle spool sticking
|
See your John Deere
dealer.
|
|
Platform Drive Will Not Engage
| Faulty switch, solenoid, or valve cartridge
|
See your John Deere
dealer.
|
| |
Faulty operator presence relay
|
Replace relay.
|
|
Platform Drive Stops
| Faulty operator presence seat switch |
Replace switch.
|
| |
Faulty operator presence relay
|
Replace relay.
|
|
Platform drive speed too slow.
| Low charge pressure |
See “Low Charge
Pressure” in this section.
|
|
|
RC48509,00005C1-19-20120815
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