Fault analysis of REXROTH Plunger Pump A4VSO40DFR-10R-PPB13N00

In the process of using the REXROTH plunger pump, if there is slow action of the actuator and the phenomenon of pressure failure, the flow rate of the plunger pump should be comprehensively investigated. According to years of maintenance experience, we make a summary of the REXROTH plunger pump A4VSO40DFR-10R-PPB13N00. I hope this will help you.

(1) The oil level of the tank is too low, the oil pipe, the oil filter is blocked or the resistance is too large and the air leaks. Do not be careless, may affect the service life of the plunger.

(2) The oil pump is not filled with oil before operation, leaving air.

(3) The center spring of the oil pump is broken, so that the plunger can not return, and the cylinder block and oil distribution disc are badly sealed

(4) Improper connection of the oil pump makes the pump bearing subject to axial force, resulting in a gap between the cylinder block and the oil distribution plate, and high and low oil cavity

(5) If it is a variable axial piston pump, the variable Angle may be too small.

(6) The hydraulic oil is not clean, the cylinder block and the oil distribution pan or the cylinder block and the plunger wear, so that there is too much oil leakage.

(7) The oil temperature is too low, the oil viscosity decreases, resulting in the increase of the internal leakage of the pump, and the pump is accompanied by fever symptoms.