| Symptom | Problem | Solution |
|
All four tread adjusts do not function.
| Speed range not in field range. |
Shift to field speed
range.
|
| |
Fuse blown.
|
Replace fuse.
|
| |
Faulty switch.
|
Replace switch.
|
| |
Load sense jamming valve not working.
|
See your John Deere
dealer.
|
| |
Engine RPM's set too low.
|
Increase RPM's to 2400.
|
| |
Low or no hydraulic oil.
|
Fill hydraulic reservoir
to correct level.
|
| |
Plugged suction strainer in hydraulic reservoir.
|
Inspect and clean strainer.
|
| |
Faulty tread adjust valve.
|
See your John Deere
dealer.
|
| |
Faulty hydraulic pump.
|
(See Troubleshooting
Of Hydraulic Systems in this section or see your John Deere dealer.)
|
|
One individual tread adjust does not function, but others
do.
| Damaged or corroded electrical connection. |
Repair, replace or clean
electrical connection.
|
| |
Damaged electrical harness.
|
Repair harness.
|
| |
Faulty solenoid valve.
|
Switch coil with good
coil, if function operates, replace coil.
|
| |
Tread adjust shim pads gap adjustment incorrectly set.
|
Adjust tread adjust
shim pads gap correctly. (See Chassis section.)
|
| |
Knee stuck.
|
Lubricate with TY25733 TEFLON® based lubricant.
|
| |
Load sense jam check valve leaking.
|
Clean, repair or replace check valve.
|
| |
Check valve stuck shut in load sense line.
|
Clean, repair or replace
check valve.
|
| |
Broken, damaged or worn shim pads.
|
See your John Deere
dealer.
|
| |
Plugged orifice in combo valve tread adjust ports.
|
Replace orifice (See
your John Deere dealer.).
|
| |
Faulty tread adjust diode.
|
Replace diode.
|
| |
Faulty tread adjust valve.
|
See your John Deere
dealer.
|
| |
Faulty tread adjust cylinder.
|
See your John Deere
dealer.
|