The excavator hydraulic pump will generally appear certain wear after a period of use, and the wear of the hydraulic pump will affect the service life of the hydraulic pump to a certain extent. There are many reasons for the serious wear of the hydraulic pump. If the excavator driver encounters the serious wear of the hydraulic pump, he must pay attention to it.
The serious wear of the hydraulic pump in excavator repair has a fatal impact on the excavator, so such problems must be solved in time. When using the hydraulic pump of the excavators of Kobelco, find out the cause of the fault from the following three points:
1. Check the internal leakage of the boom cylinder - the easiest way is to raise the boom to see if it has obvious free fall. If the falling is obvious, disassemble the oil cylinder for inspection, and replace the sealing ring if it is worn.
2. Check the control valve - first clean the safety valve and check whether the valve core is worn. If worn, replace it. If there is still no change after the installation of the safety valve, check the wear of the control valve spool. The service limit of the clearance is generally 0.06mm. If the wear is serious, it should be replaced.
1. Measure the pressure of the hydraulic pump - if the pressure is too low, adjust it. If the pressure still cannot be adjusted, it means that the hydraulic pump is seriously worn.
All of the above reasons will cause damage to the hydraulic pump. The excavator maintenance plant gives tips. It is recommended to ask the relevant excavator maintenance personnel to troubleshoot the fault that the owner cannot solve by himself.
In daily use, the hydraulic pump should pay attention to the use of correct operation, and the machine should be inspected and maintained regularly. Only in this way can the wear and tear of the hydraulic pump and even the occurrence of faults be found as soon as possible. There should be a certain knowledge reserve on the solutions to the faults of the hydraulic pump, so as to better deal with the occurrence of various emergencies.
