As an owner, operator, or hydraulic repair technician, lacking sufficient knowledge of hydraulics can result in significant expenses. Therefore, adhering to the following guidelines can increase the lifespan of the hydraulic system, and consequently, the hydraulic pump, while preventing damage and excessive costs:

• Use appropriate hydraulic oil (ISO VG standard at 40°C and viscosity of 68 cSt).
• Recommended oils include Pars Babak 100, 125, or Behran 68, or their technical equivalents.
• Change the hydraulic oil based on standard intervals, weather conditions, and according to the machine’s instructions.
• Ensure the oil tank is thoroughly cleaned before filling, and there is enough oil in the tank.
• Common motor oil 10 available in the market is not suitable for hydraulic systems and will degrade the quality and lifespan of the hydraulic system, especially the hydraulic pump.
• When replenishing oil in the tank, always use the same hydraulic oil as before (the reason for the oil shortage should be investigated).
• Install baffle plates inside the tank to prevent sludge and contamination from moving to the filter and pump.
• Since contamination is the number one enemy of any hydraulic system, ensure no contamination enters the system (contamination can be in the form of solid particles, liquids, or gases)
• In cold weather, do not pressurize the machine before the oil is warmed up. It is better to run the pump without pressure for 10 to 15 minutes until the oil temperature reaches the standard level (the minimum standard temperature is 30°C).
• The best performance of the pump and cartridge is at a temperature between 40°C and 55°C. Therefore, having a cooler and heater to control the temperature and consequently the viscosity in the hydraulic system is essential.
• Ensure the pump suction filter is clean and intact. Its capacity should be 3 to 5 times the flow rate of the pump.

• Ensure that the valves in the system are functional and efficient.
  Installing an oil pressure gauge (manometer) after the pressure control valve in any system is essential for accurate pressure adjustment.

• Always monitor and fix system leaks.

• For installing the pump in the system, ensure proper alignment of the pump shaft, coupling, and drive shaft, then sequentially tighten the connection bolts after fastening.

• After connecting the hoses and before starting the device, fill the pump with the specified hydraulic oil and prime the system.

• Ensure that no air enters the pump through the O-rings of the inlet flange.

• Before pump cartridge assembly in the pump casing, make sure the casing is completely clean. The shaft clearance should not exceed the standard limit.

• Verify the condition of the bearings and seals, then assemble the pump cartridge with attention to the position of the two pins so that they are correctly placed.

• Pay attention to the rotation direction of the cartridge (clockwise or counterclockwise)
  When changing the angle of the pump’s inlet and outlet, be cautious of the following:
  a) The cartridge pins do not come out of their positions.
  b) The casing O-rings do not come out of their positions.

• The maximum operating pressure for the cartridge and vane pumps is 175 bar for continuous operation and 210 bar for intermittent operation.

• The suitable operating speed for the drive is a minimum of 600 RPM and a maximum of 1800 RPM.

• Research shows that over 90% of damages in hydraulic systems are due to the use of inappropriate oil, contamination in the hydraulic system, and neglecting the filters.

• If you follow all the above guidelines and still encounter issues, you can contact the experts from this company.