TROUBLESHOOTING Chart The following troubleshooting chart is provided for assistance in locating and correcting problems which are most common. Many of the recommended procedures must be done by authorized Bobcat Service Personnel only.
Check for correct function after adjustments, repairs or service. Failure to make correct repairs or adjustments can cause injury or death.
W–2004–1285
PROBLEM
CAUSE 1, 2, 3, 6, 6
Slow hydraulic system action.
1, 3, 5, 6, 7, 8, 9
Hydraulic action is not smooth.
1, 3, 4, 6, 8
Lift arms go up slowly at full engine RPM.
1, 3, 5, 6, 7, 8, 9, 11, 12
The lift arms or Bob–Tach will move with the pedal in neutral position
5, 11
The lift arms come down with the pedal in the neutral position.
5, 12, 13, 14, 15
The bucket does not self–level.
16, 17, 18
The bucket will partially self–level.
16, 17
The bucket has no power to roll forward.
18
The bucket does not roll back.
17 KEY TO CORRECT THE CAUSE
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 53 of 344
Dealer Copy -- Not for Resale
The hydraulic system will not operate.
The fluid level is not correct. The pedal linkage is disconnected. The hydraulic pump has defect. Pressure compensator valve has a defect. The pedal linkage is not adjusted correctly. Drive belt is loose or broken. Check right and left hand auxiliary levers for neutral position. Suction leak in the hydraulic system. Fluid is cold. Using the loader for more than its rated capacity. Spool in the valve section is not centering or the centering spring is broken. Internal leak at the lift cylinder(s). External leak at the lift cylinder(s). Port relief seal is leaking. Load check has a defect in the valve section. Check the flow divider in the bucket position valve. Check the unloading spool in the bucket position valve. Check the relief valve in the bucket position valve. –2–3–
953 Bobcat Loader Service Manual
