Elliott Digger Derrick - PUMP MAKES NOISE; OIL OVERHEATING

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Troubleshooting EEC-0023 V1.1

Troubleshooting

PUMP MAKES NOISE

 Low oil

 Oil viscosity too high

 Pump speed too fast

 Suction plugged

 Ball valve closed

 Dirt in pump

 Tank breather plugged

 Air in oil

 Worn pump bearings

 Broken Pump parts

OIL OVERHEATING

 Operator holds control lever in position too long-oil dumps over relief valve

generating excess heat

 Using incorrect oil

 Low oil

 Dirty oil

 Engine running too fast

 Incorrect relief valve settings

 Internal oil leakage in valves, cylinders, motors

 Restriction in pump suction line

 Ball valve closed

 Control valve stuck partially open

 Heat not radiating properly from hydraulic tank, oil lines and cooler

 Excessive operation of winch