Excavator hydraulic pump maintenance how to find out the reason of failure

1 hydraulic pump maintenance method of the simple leak check arm oil cylinder of the boom rises, excavator hydraulic pump maintenance and improvement methods: excavator hydraulic pump hydraulic steering cylinder hydraulic oil when hydraulic pump serious wear of the excavator has a fatal impact. See if it has a significant free fall. If the whereabouts of apparent check cylinder assembly, the sealing ring should be replaced if worn.

2 check the control valve first cleaning safety valve, check valve is worn, such as wear should be replaced. If there is no change after the safety valve device, check the valve core wear, the clearance limit is generally 0.06MM, wear serious, should be replaced.

3 measure the pressure of the hydraulic pump, if the pressure is low, then adjust, and the pressure is still not adjusted up, it shows that the hydraulic pump is seriously worn.