Hydraulic plunger pump left rotation group, suitable for SK DH HD R EC SY LG and other 20~25 tons excavator K3V112 hydraulic pump spare parts

Failure Causes and Solutions
(1) When the handle moves upward, the water cannot be sucked up 1. Check whether the suction pipe is blocked by garbage 2. Check whether the switch is tightened
(2) Weakness when the handle moves up and down 1. Check whether the switch is tightened
2. Check whether the sealing ring of the piston shaft is damaged. 3. Check whether the one-way valve in the water outlet joint is dirty. (3) The pressure gauge shows that the pressure is unstable. 1. There is leakage in the pipeline or the water outlet joint, and the sealing ring should be replaced 2. Leakage at the connection of the gauge rod, replace the sealing ring 3. The pressure gauge is damaged, repair the pressure gauge