OPERATION
OPERATION
10. 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. |
| ||
| Hydraulic pump worn. | Repair or replace pump. |
| Oil line restricted or leaking. | Check all hoses and tubes for leaks, |
|
| damage or restrictions. Replace |
|
| damaged or restricted hoses or tube |
|
| oil lines. |
| Control valve does not shift | Inspect, clean, repair or replace |
| properly. | valve. |
| Air in hydraulic system. | Cycle lift cylinders and bucket |
|
| cylinders several times to free |
|
| 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 |
|
|
or lowering | Air in hydraulic system. | Cycle lift and bucket cylinders. |
| ||
| Oil level too low. | Add oil as required. |
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Oil leakage | Loose connections. | Tighten fittings. |
| Defective fittings or hoses. | Replace defective parts. |
| Worn or damaged | Install a seal repair kit. |
| wiper seal in cylinder rod end. | See “Cylinder Service”. |
| Worn or damaged or rings in | Install an |
| valve. |
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|
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|
Insufficient lift capacity | Load is greater than boom | Check loader specifications. |
| lift capacity. |
|
| Improper hydraulic pump | Repair or replace pump. |
| operation. |
|
| Internal lift cylinder leakage. | Replace any worn parts and install |
|
| a seal repair kit. See “Cylinder |
|
| Service”. |
| Improper hydraulic valve | Repair or replace valve. |
| operation. |
|
2647 01/11 | Operation Section |
© 2011 Alamo Group Inc.
