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Troubleshooting

Please read before use.

Grease is not provided due to transport conditions. Please provide grease when mounting.
Please refer to enclosed instruction manual for grease points

Choose your product type

Product type

Open/close movement is slow or absent

Cause Treatment
Stop valve isn't open fully open stop valve
Acceleration valve failure Repair or change acceleration valve
Cylinder failure repair or change cylinder
Reduction of pressure or discharge quantity of ... inspect main body of hydraulic shovel and adjust pressure and flow.

Swivel movement is slow or absent

Cause Treatment
Stop valve is closed open stop valve
Hydraulic motor failure repair or change hydraulic motor
Swivel valve failure repair or change swivel valve
Swivel wheel bearing failure change swivel wheel bearing
Reduction of pressure of pressure shovel inspect main body of hydraulic shovel and adjust pressure

It swivels during claw opening

Cause Treatment
Swivel valve failure repair or change swivel valve

Crushing capability reduction

Cause Treatment
Acceleration valve failure Repair or change acceleration valve
Hydraulic cylinder failure repair or change cylinder
Cutter wearing invert or change cutter
Reduction of pressure of pressure shovel inspect main body of hydraulic shovel and adjust pressure

Cutting capability reduction

Cause Treatment
Cutter wearing invert or change cutter
Lag between cutters adjust cutter clearance by a shim
Cutter chipping or breaking change cutter
Acceleration valve failure Repair or change acceleration valve
Hydraulic cylinder failure repair or change cylinder
Reduction of pressure of pressure shovel inspect main body of hydraulic shovel and adjust pressure
Insufficient grease add grease

Noise at open/close movement

Cause Treatment
Pin/push wearing change pin/push

Looseness

Cause Treatment
Hose edge wearing tighten nuts

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