New 708-3S-00562 PC50mr-2 Hydraulic pump

When the excavator hydraulic pump is seriously worn, it has a fatal effect on the excavator, so the excavator must solve such problems in time. When repairing the hydraulic pump of the excavator, look for the cause of the fault from the following three points: (1) Check the internal leakage of the boom cylinder. The simplest way to repair the hydraulic pump of the excavator is to raise the boom to see if it has a clear free fall. If the drop is obvious, remove the cylinder and check that the seal should be replaced if it is worn. (2) Check the control valve Firstly clean the safety valve and check if the valve core is worn. If it is worn, it should be replaced. If there is no change after the safety valve is installed, check the wear of the valve stem of the control valve. The clearance limit is generally 0.06MM. If the wear is serious, it should be replaced. (3) If the pressure of the hydraulic pump is measured, if the pressure is low, the adjustment is made, and the pressure is still not adjusted, indicating that the hydraulic pump is seriously worn.