Hydraulic pumps are one of the necessary part of a hydraulic system. That’s why its maintenance becomes very important day by day in order to reduce the breakdown and increase its and hydraulic system’s lifetime. 80% of the common breakdown is because of wrong working conditions and maintenance.
With technology, while their efficiency has been increasing, their lifetime has been decreasing. Knowledge about Hydraulic systems, experience, choises ( oil, usage or nonusage of filter) of end user really effects the lifetime of the hydraulic pumps from the time the first working moment till the moment of breakdown. Hydraulic pumps never breakdown on a sudden but they usually come through with overheat, ripple of pressure, loss of flow etc. There are some simple rules so as not to come across these breakdowns.
- In a hydraulic system, all equipments should be harmonious. (Cylinder, pump, PTO, valve, limitation valve, oil tank, hoses, fittings, etc...)
- Choose the right pump model (gear pump, piston pump, bent axis pump) with right performance values (pressure and flow) according to the purpose of superstructure of the vehicle.
- Determine adequate connection flange type. (UNI, ISO, SAE, Shaft, etc...)
- Rotation of the pump should be determined according to rotation of stimulating components as PTO and electric motor.
- All hoses and fittings sizes in a hydraulic system should be same as inlet and outlet fittings stated in the pump catalogue. Even the pump inlet fitting is appropriate, passing points along feeding line, there should not be any narrowing below the diameters mentioned in the catalogue.
- Notice that while mounting pump to stimulating components (electric motor, PTO, etc...), it should not be swanky, nuts should be completely tightened and balanced, hoses' connections should be flexible.