16. TROUBLESHOOTING 16.4.2 CHASSIS 2-88 Problem Main causes Remedy Oil pressure in torque converter fails to rise ‡ Improper tightening of oil pipe, pipe joint, air leaking in or oil leaking out because of damage ‡ Wear, scuffing of gear pump ‡ Insufficient oil in transmission case ‡ Clogged oil filter element strainer in transmission case ‡ Check, repair (‡ Check, replace) ‡ Add oil to the specified level. For details, see CHECK BEFORE STARTING ‡ Clean.
For details, see EVERY 1000 HOURS SERVICE Torque converter is overheats ‡ Loose fan belt ‡ Engine water temperature is high ‡ Clogged oil cooler ‡ Oil pressure too low ‡ Lack of flow of lubricant caused by wear of power train gear pump ‡ Replace fan belt ‡ See Engine related parts (‡ Clean or replace) ‡ Go to “Oil pressure in torque converter fails to rise” (‡ Replace gear pump) Torque converter oil temperature gauge does not work ‡ Defective oil temperature gauge ‡ Defective contact in wiring connection (‡ Replace oil temperature gauge) (‡ Check, repair) Lacks drawbar pull (machine does not pick up speed) ‡ Lack of engine horsepower ‡ Oil pressure in torque converter is too low ‡ Steering clutch is slipping ‡ See Engine related parts ‡ Go to “Oil pressure in torque con- verter fails to rise” (‡ Check, repair) Machine will not move off when joystick is placed at FORWARD or REVERSE ‡ Lack of oil in steering clutch case ‡ Transmission oil pressure does not rise ‡ Steering clutch slips fi Wear, scuffing of gear pump fi Clogged oil strainer element in steering clutch case ‡ Add oil to the specified level.
For details, see CHECK BEFORE STARTING ‡ Go to “Oil pressure in torque con- verter fails to rise” (fi Check, replace) fi Clean. For details, see EVERY 1000 HOURS SERVICE Does not steer even when steering is operated ‡ Brake is not applied on side which is pulled (‡ Adjust linkage) (‡ Check brake pressure) Machine doesn‘t stop when brake pedal are depressed ‡ Defective brake adjustment (‡ Adjust linkage) (‡ Check brake pressure) Track comes off ‡ Track is too loose ‡ Adjust track tension. For details, see WHEN REQUIRED. Sprocket develops abnormal wear ‡ Track is too loose or too tight ‡ Adjust track tension. For details, see WHEN REQUIRED.
Brake rises too slowly or does not rise at all (or blade tilts too slowly) ‡ Lack of hydraulic oil ‡ Work equipment lock lever is at LOCK position ‡ Add oil to specified level. For details, see EVERY 250 HOURS SERVICE ‡ Set to FREE position Ripper moves too slowly ‡ Lack of hydraulic oil position ‡ Work equipment lock lever is at LOCK position ‡ Add oil to specified level. For details, see EVERY 250 HOURS SERVICE ‡ Set to FREE position Insufficient force of ripper ‡ Leakage from piping (‡ Tighten)