OPERATOR'S MANUAL MAINTENANCE

Section 3 - Maintenance
Routine Maintenance
Troubleshooting
3-106 3-106
9803/JSM-0412
Travel
Table 55. Insufficient travel force
Table 56. Rough travel
Table 57. Crooked travel
Cause Remedy
Pressure setting for main relief valve is too low
Adjust the pressure
(1)
Defective counterbalance valve
Replace the counterbalance valve
(1)
Performance reduction of travel motor
Replace travel motor
(1)
Swivel joint packing damage
Replace swivel joint packing
(1)
Performance reduction of hydraulic pump
Replace hydraulic pump
(1)
Cause Remedy
Excessively tightened track Adjust to proper tension
Stone or foreign matter caught in track Remove stone or foreign matter
Defective valve
Repair valve or replace
(1)
Performance reduction of travel motor
Replace travel motor
(1)
Air in travel motor Refill with oil
Cause Remedy
Left and right tracks are not equally tightened Bleed air from left and right, adjust tracks to equal tension
Performance reduction of hydraulic pump
Replace hydraulic pump
(1)
Performance reduction of travel motor
Replace travel motor
(1)
Oil leakage inside control valve
Replace valve housing assembly
(1)
Swivel joint packing damage
Replace swivel joint packing
(1)
(1) Indicates jobs which should be done by a specialist.
Loose lever link Adjust