OPERATION
11. Troubleshooting Guide
TROUBLE | POSSIBLE CAUSE | POSSIBLE REMEDY |
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Loader slow or will not lift | Hydraulic oil too heavy. | Change to proper oil. |
and/or dump | Oil filter plugged. | Clean or replace filter. |
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| Hydraulic pump worn. | Repair or replace pump. |
| Oil line restricted or leaking. | Check all hoses and tubes for leaks, |
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| damage or restrictions. Replace |
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| damaged or restricted hoses or tube |
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| oil lines. |
| Control valve does not shift | Inspect, clean, repair or replace |
| properly. | valve. |
| Air in hydraulic system. | Cycle lift cylinders and bucket |
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| cylinders several times to free |
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| system of air. |
| Cylinder leaks internally. | Replace seals. |
| Faulty relief valve (tractor). | Clean and replace relief valve. |
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Loader chatters or | Air leak in pump inlet line. | Check, tighten or replace inlet line. |
vibrates when raising |
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or lowering | Air in hydraulic system. | Cycle lift and bucket cylinders. |
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| Oil level too low. | Add oil as required. |
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External leakage | Damaged seals. | Remove leaking component; |
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| replace seals. |
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Pump noisy | Inlet line restricted or leaking. | Check for air leaks, restrictions or |
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| collapsed hose. Tighten or replace |
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| hose. Clean filter. |
| Oil level too low. | Add oil as required. |
| Pump worn or damaged. | Repair or replace pump. |
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Excessive wear on bucket | Bucket is riding on cutting edge | Use boom “FLOAT” position or |
cutting edge | instead of wear runners. | bucket level indicator to ensure |
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| bucket rides on wear runners. |
5211 01/11 | Operation Section |
© 2011 Alamo Group Inc.