18-Speed Powershift Transmission Troubleshooting

Symptom Problem Solution

Transmission slippage

Low oil supply

Fill system with correct oil

Riding clutch pedal

Remove foot from clutch pedal

Excessive load on tractor

Lower gear and/or reduce load

Transmission filter indicator light on

Change filter element or have your John Deere Dealer repair

Tractor will not move in any gear

Low transmission oil level

Fill transmission with correct oil

Extremely cold transmission oil

Warm transmission oil

Check for active diagnostic code

See your John Deere Dealer

Transmission malfunction

Remove and inspect transmission suction screen for metal particles or See your John Deere Dealer

Transmission drive line broken

Repair or have your John Deere Dealer repair

Tractor lacks power or moves slow

Transmission slipping

Have your John Deere Dealer repair

Transmission in too high a gear

Downshift to lower gear

Excessive load

Transmission in wrong gear for operating conditions

Transmission shifts too slow

Low transmission oil level

Fill transmission with correct oil

Sticking clutch solenoid valve

Have your John Deere Dealer repair

Pump malfunction

Have your John Deere Dealer repair

Transmission filter indicator light on

Change filter element(s)

Have your John Deere Dealer repair

Transmission shifts too fast

High transmission system pressure

Have your John Deere Dealer repair

Transmission requires calibration

See Powershift Transmission Calibration in General Maintenance and Inspection Section

RW29387,00003E9 -19-11MAR09-1/2


Symptom Problem Solution

Transmission shift quality changed

Transmission requires calibration

See Powershift Transmission Calibration in General Maintenance and Inspection Section

Transmission system overheats

High transmission oil level

Check transmission-axle oil level. See Checking Transmission-Axle Oil Level in Lubrication and Maintenance Section-250 Hour Service

Excessive load

Lighten load or use lower gear

Pump malfunction

Have your John Deere Dealer repair

Transmission alarm sounds and indicator light on

Transmission-axle filter(s) restricted

Change filter element(s)

Excessive transmission noise (Under load or no load)

Low transmission oil level

Fill transmission with correct oil

Parts worn or damaged in transmission

Have your John Deere Dealer repair

Excessive tractor vibration

Transmission or transmission pump malfunction

Have your John Deere Dealer repair

Parts worn or damaged in transmission

Have your John Deere Dealer repair

Excessive noise

Transmission pump malfunction

Have your John Deere Dealer repair

Excessive backlash in gear train

Have your John Deere Dealer repair

RW29387,00003E9 -19-11MAR09-2/2