Table 4-4 General Troubleshooting
TROUBLE | PROBABLE CAUSE | REMEDY |
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1. Hydraulic Pump Noisy | Cavitation | Check condition of suction strainer and return |
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| line filter. Clean or replace as necessary. |
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| Check for clogged or restricted inlet line to |
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| pump. |
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| Check for loose fittings on suction line. |
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| Clean hydraulic tank breather cap. |
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| Areation | Check all connections on inlet side of pump. |
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| Pour hydraulic fluid over suspected leak. If |
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| noise stops, the leak has been found. |
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| Fill hydraulic tank to bottom of filler strainer. |
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| Check condition of pump shaft seal. |
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| Pump worn or damaged | Overhaul or replace. |
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2. Hydraulic fluid | Pressure too high | Contact authorized Bush Hog dealer. |
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| overheated |
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Fluid dirty or fluid level low | Clean or replace filter and strainer. Add fluid |
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| (above 200º F [93ºC]) |
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| bring up to bottom of filler strainer. |
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| Hydraulic fluid incorrect | Check fluid. Should a change of hydraulic |
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| viscosity. | fluid be required, flush entire system and |
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| change filters before adding new fluid. |
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| Continuously stalling cutter | See Item 3 |
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| Hydraulic fluid bypassing | Overhaul or replace faulty component. |
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| internally due to worn pump, |
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| motor, or relieve valve. |
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3. Cutter stalls | Low hydraulic pressure | Contact authorized Bush Hog dealer |
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| continuously |
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Cutting height too low. | Increase cutting height. |
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| PTO speed too slow | Increase to implement PTO speed rating. |
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| Tractor forward speed too | Use lower gear. |
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| fast. |
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4. Cutter deck will not | Tractor on incline. | Move tractor to level position |
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| pivot down. |
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15
