Service Manual User Manual

Transmission
7-11
7.6 TRANSMISSION TROUBLESHOOTING
This section provides an easy reference guide covering
the most common problems that occur during operation
of the transmission.
Note: For further information, refer to:
Clark-Hurth T 12000 Powershift Transmission
3, 4, & 6 Speed Intermediate Drop
Maintenance and Service Manual
part number
SM T12-3,4,6 ID
.
Transmission Troubleshooting
Problem Cause Remedy
1. Low clutch pressure. 1. Low oil level.
2. Clutch pressure regulating valve
stuck open.
3. Faulty charge pump.
4. Broken or worn clutch shaft or
piston sealing rings.
5. Clutch piston bleed valve stuck
open.
1. Fill to the proper level.
2. Clean the valve spool and
housing.
3. Replace the pump.
4. Replace sealing rings.
5. Clean bleed valve thoroughly.
2. Low converter charging
pump output.
1. Low oil level.
2. Suction screen plugged.
3. Defective oil pump.
1. Locate the break and/or stop the
leaks.
2. Clean the suction pump.
3. Replace the pump.
3. Overheating. 1. Worn oil sealing rings.
2. Clogged radiator.
3. Worn oil pump.
4. Low oil level.
1. Remove, disassemble and
rebuild the converter assembly.
2. Clean radiator.
3. Replace the pump.
4. Fill to the proper level.
4. Noisy converter. 1. Worn oil pump.
2. Worn or damaged bearings.
1. Replace the pump.
2. Disassemble the converter and
determine which bearing is worn
or damaged.
5. Lack of power. 1. Low engine RPM causes
converter stall.
2. Worn oil sealing rings.
3. Worn oil pump.
4. Low oil level.
1. Adjust the engine RPM check
governor.
2. Remove, disassemble and
rebuild the converter assembly.
3. Replace the pump.
4. Fill to the proper level.
Model 3606 • Origin 10/99