What should I do if the Komatsu PC200-8 excavator Bucket Cylinder is naturally reduced?

What should I do if the Komatsu PC200-8 excavator Bucket Cylinder is naturally reduced?

Common causes and solutions for this fault:

1. Stick cylinder failure: Turn off the engine, be prepared, then run the engine at high idle speed and diagnose the fault.

2. Seal failure of the stick control valve (spool valve): The seal of the stick control valve slide valve may be faulty. Check it directly.

3. Seal failure of the arm control valve (pressure compensation valve): The seal of the pressure compensation valve of the arm control valve may be faulty. Check it directly.

4. Seal failure of the arm control valve (suction valve): The seal of the suction valve of the arm control valve may be faulty. Check it directly. This suction valve can also be checked by replacing it with another suction valve and looking at the change in state.

5. Sealing failure of the safety valve of the locking valve: The sealing of the safety valve of the locking valve may be faulty. Check it directly.

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