Section 12: troubleshooting
PROBLEM |
| POSSIBLE CAUSE |
| SOLUTION |
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Jerky Operation | • | Air in hydraulic system | • Cycle cylinders several times to | |
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| purge system of air. |
| • | Cold hydraulic oil | • Run engine to warm oil. | |
| • Low hydraulic oil level | • Add oil to level specified. | ||
| • | Poor oil circulation | • Change oil filter and clean | |
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| screen in tractor hydraulic |
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| system. |
| • Worn or damaged hydraulic pump | • Repair or replace pump. | ||
| • Air leak in pump inlet line | • Check, tighten or replace inlet | ||
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| line. |
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Slow Operation | • | Faulty valve | • Repair or replace valve. | |
| • Air in hydraulic system | • Cycle lift cylinders and bucket | ||
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| cylinders several times to free |
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| system from air. |
| • Hydraulic oil too heavy | • Change to proper oil. | ||
| • | Oil filter plugged | • Clean and replace filter. | |
| • | Slow engine speed | • Increase engine speed rate. | |
| • Cylinder piston seals leaking | • Repair (if available) or replace | ||
| • Valve out of adjustment or malfunctioning | • Adjust, repair or replace. | ||
| • Tractor hydraulic pump malfunctioning | • Repair or replace pump. | ||
| • Hydraulic couplers not completely engaged | • | Connect hydraulic couplers. | |
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Oil Leaks | • | Loose hose connections | • | Tighten fittings. |
| • Fittings or hoses defective | • Use thread sealer on pipe | ||
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| (tapered) threads. |
| • Hydraulic cylinder seals worn or damaged | • Repair seals (if available) or | ||
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| replace cylinder. |
| • Valve components worn or damaged | • | Repair and/or replace. | |
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Cannot Raise Load | • | Low oil supply | • | Check oil level. |
| • | Bucket overloaded | • | Try lighter load. |
| • Hose fittings not fully engaged in couplers | • | Recouple hoses. | |
| • Cylinder piston seal leakage | • | Repair or replace. | |
| • Valve out of adjustment or malfunctioning | • | Repair or replace. | |
| • | Hydraulic pump malfunctioning | • | Repair or replace. |
| • Load is greater than boom lift capacity | • | Check loader specifications. | |
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