How to fix hydraulic pump noise: 8 common causes and 5 repair methods

1, cause analysis

(1) Suction of air phenomenon is serious.

(2) There is air in the pipeline or pump memory.

(3) The suction pipe into the oil surface is shallow or tank oil level is too low.

(4) The pump shaft of the hydraulic pump and the motor shaft coaxiality is poor.

(5) poor coupling Installation, poor coaxiality and jump.

(6) The suction oil filter is partially blocked.

(7) The viscosity of the oil is too high.

(8) The suction pipe or pump suction chamber is not smooth.

2、Maintenance process

(1) air in the pipeline or pump memory, will make the hydraulic pump work when the inhalation of air bubbles, thus generating noise, no-load operation, remove the air can be.

Hydraulic pump working noise causes and maintenance

(2) suction pipe into the oil surface is shallow or tank oil level is too low, so that the hydraulic pump work to produce suction phenomenon, inhalation of air bubbles, resulting in noise. Measures to be taken is to appropriately lengthen the length of the suction pipe or improve the oil level of the tank.

(3) the pump shaft of the hydraulic pump and the motor shaft coaxiality or coupling installation is poor, poor coaxiality and jumping, will make the hydraulic pump noise when working, to rule out the method is to re-install and meet the technical requirements, the coaxiality should be up to 0.03mm or less.

(4) the viscosity of the hydraulic oil is too high, the hydraulic pump will produce suction phenomenon, so that the hydraulic pump noise. Elimination method is to reduce the viscosity of the hydraulic oil, choose the specified oil.

(5) suction oil filter partially cLogged, suction pipe or pump suction chamber is not smooth, etc. will cause the hydraulic pump work, resulting in suction phenomenon, resulting in noise. Elimination method is to clean or replace the oil filter element, clean the suction pipe or pump.