Luzhou Synthetic Hydraulic Parts Co., Ltd

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Maintenance, repair and troubleshooting of plunger pump

Time：2023-09-14

1. the oil output from the hydraulic pump is insufficient or not

(1) The oil level in the oil tank is too low (2) The oil suction filter is blocked (3) The oil inlet pipe leaks (4) The oil drain is too large (5) The inclined surface of the swash plate is small

2. pressure gauge jitters

(1) The plunger is damaged (2) Foreign matter enters the pump (3) The spring resistance is small

3. the pressure is reduced and cannot be adjusted, the pressure regulating valve is screwed to the * end point or not

(1) Check the overflow valve, one-way valve, reversing valve and hydraulic cylinder in the system for leakage

(2) Open the rear and check the damaged place between the cylinder body and the oil distribution plate. If there is any damage, grind or replace the hydraulic pump.

4. vibration and noise

(1) Whether the two shafts of the motor and the oil pump are concentric or severely worn

(2) Whether the bearing is stuck and the screw is loose.

(3) The suction pipe is too fine, the oil level is too low, and the filter screen is blocked.

Keywords： Maintenance, repair and troubleshooting of plunger pump