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4-4 TROUBLESHOOTING
Troubleshooting procedures are listed in Table
dealer. Please have ready your machine name, model number, serial number, purchase date and exact cause or description of problem.
TABLE 4-1 TROUBLESHOOTING PROCEDURES
PROBLEM | POSSIBLE CAUSE | REMEDY | |
Loader slow and/or will not dump. | Hydraulic oil to heavy. | Change to proper oil. | |
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| Oil filter plugged. | Clean or replace filter. |
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| Hydraulic pump worn. | Repair or replace pump. |
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| 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 lines. |
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| Quick couplers not properly connected. | Check connection - Replace if necessary. |
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| Control valve does not shift properly. | Inspect clean, repair or replace valve. |
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| Air in hydraulic system. | Cycle lift cylinders and bucket cylinders |
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| several times to free system of air. |
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| Cylinder leaks internally. | Replace seals. |
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| Faulty valve. | Repair or replace valve. |
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Loader chatters or vibrates when | Air in hydraulic system. | Cycle lift cylinders and bucket cylinders. | |
raising or lowering. | Oil level too low. | Add oil as required. | |
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Oil leaks. | Damaged fittings or hoses. | Replace damaged parts. | |
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| Loose connections. | Tighten fittings. |
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| Worn or damaged | Install a seal repair kit. |
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| wiper seal in cylinder rod end. |
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| Worn or damaged | Install an |
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| valve. |
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Insufficient lift capacity. | Load is greater | Check loader specifications. | |
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| than boom lift capacity. | Check tractor system. |
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| Internal boom cylinder leakage. | Replace any worn parts and install a seal |
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| repair kit. |
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| Improper hydraulic valve | Repair or replace valve. |
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| operation. |
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Slow leakdown. | Worn control valve. | Have authorized Bush Hog dealer replace | |
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| seals. |
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| Worn cylinder piston seals. | Have authorized Bush Hog dealer replace |
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| seals. |
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Excessive wear on bottom of bucket | Float position not used while | Use float position provided on valve. | |
and wear pads. | operating loader. |
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Hydraulic cylinders inoperative. | Hose from control valve improperly | Refer to plumbing diagrams in Section V. | |
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| connected. |
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Pump operating continually on closed | Hydraulic control valve relief stuck | See your tractor manual for proper adjust- | |
center tractor hydraulic system. | open. | ment or Bush Hog dealer for loader valve. | |
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| Hydraulic control valve relief set | (3000 PSI is maximum pressure relief |
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| too low. | setting recommended) |
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Loader lift and bucket tilt controls do not work | Hoses improperly connected. | Refer to plumbing diagrams in Section V | |
according to decal. |
| and correct hose connections. | |
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Valve noisy and/or hot. | Open center control valve on | Install closed center plug on optional valve. | |
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| closed center tractor. |
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Tractor loads/pump squeals. | Closed center control valve on open | Install open center plug on optional valve. | |
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| center tractor. |
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