Excavator hydraulic pump overhaul 5 tips

The hydraulic pump of the excavator usually consists of a regulator, an auxiliary valve or an oil injection pump, an auxiliary valve or an auxiliary hydraulic pump. The structure is very complicated, and it is difficult to accurately find the cause of the failure. The maintenance hydraulic pump mainly repairs the following components. abnormal situation:

1 Check the filter element of the hydraulic pump for abnormal impurities. For example, check whether the excavator spare parts hydraulic pump foot and the hydraulic cylinder are aging. If there are many metal iron scraps or metal iron scraps, it indicates that the foot part is aging and needs to be drained.

2 Check if the hydraulic pump starts or if there is abnormal noise in the operation. If there is abnormal sound or vibration, check the regulator frequency. In addition, some sounds are caused by cavitation or internal damage of the hydraulic pump.

3 Some faults are caused by the hydraulic pump of the excavator itself or the components downstream of the hydraulic spare parts oil flow. The inspection method is to change the oil pipe of the excavator hydraulic pump to observe whether the fault phenomenon has changed.

4 If the excavator failure is caused by a control problem, the hydraulic pump needs to be disassembled and inspected, and in the case of the oil passage, the pressure needs to be measured.

5 When the hydraulic cylinder, valve plate and swash plate of the excavator wear beyond a certain limit, it needs to be replaced or overhauled. https://jnjmzm.wixsite.com/sdjygcjx