Hydraulic pump maintenance
Hydraulic pump maintenance involves inspecting and replacing internal components such as rotors, vanes, rollers, valves, and bearings to maintain system efficiency above 90% and working pressure up to 250 bar. Pump displacement ranges from 10 to 500 cc per revolution, with oil flow from 20 to 300 liters per minute. Shaft and bearing alignment must be controlled within 0.05 millimeters, and seals, including NBR or FKM, are replaced to prevent oil leakage.
Post-repair performance tests include checking pressure and flow under static and dynamic conditions. Operating temperature should remain between 0 and 90°C, and noise below 75 dB. Non-destructive testing NDT, including radiography and ultrasonic inspection, is performed on the shaft and housing. Repairs following ISO 4406 and DIN 51524 standards can extend pump service life beyond 10,000 hours.
