What is the reason for the weakness of Komatsu PC220 excavator? Yunnan excavator maintenance

Analysis of Li Shifu Meiruite Excavator Maintenance Factory

The reasons for the failure are as follows:

1 The pilot valve is damaged.

Water in hydraulic oil or dirty hydraulic oil will cause signs of weakness of the whole excavator.

3 The damage or poor sealing of the control valve used by the excavator will also lead to the failure of the whole vehicle.

4 and PC-EPC valve are faulty.

5. The main safety valve of excavator is aging or the pressure is too high or too low, which will cause excavator failure.

Finally, there is another possibility that the pump pressure and flow rate do not match or the accessories in the hydraulic pump are seriously damaged.