How do you troubleshoot a Hydraulic system.Learn about Hydraulic solenoid valve troubleshooting.Hydraulic pump trouble shooting gude of CNC machine.
Hydraulic pump troubleshooting guide
| Fault | Root cause | Solution |
| Noise in Pump | 1- Coupling problem.It may misaligned. 2– Air intake from suction pipe. 3- Inlet pipe is pressed/Clogged which will restrict the flow. 4- Air Bubble in Fluid . 5- Inlet filter clogged. | 1- Check the Coupling.Check the shaft bearing.Replace if necessary. 2- Tighten the joints.Pour fluid on joints and listen the sound.If there is air leakage then sound will be changed. 3- Pump should receive oil freely.There should not be any restriction in flow. 4- Check the return line.It should be below Oil level.It should be well separated from inlet line. 5- Clean the filter. |
| Pump Unable to deliver | 1- Low Oil level. 2- Wrong Motor direction 3- Coupling Damaged/Coupling locking damaged.Coupling shaft Key damaged. 4- Inlet line plugged. 5 – Inlet filter clogged. | 1- Check oil level.If low then add oil and ensure the inlet line of pump submerged in fluid. 2- Check the motor direction and pump direction.Both should match.If direction mark in pump is not visible then change the motor direction once. 3- Dismantle the motor and pump .Check the both shaft and coupling.Key or locking of coupling on shaft should be in Proper condition.Replace if necessary. 4—- Clear the inlet line. 5- Clean the Filter. |
| Pump Unable to Develop pressure. | 1- Pressure reducing valve setting disturbed. 2- Relief valve not working. 3- Leakage in valves or cylinder. 4 – Low Oil level . 5- Filter Clogged. 6- Check return line filter or any valve . | 1- Set the pressure reducing valve properly. 2- Check the relief valve .It should be in working condition.Check its spring,oil seal and screw piston. 3- Ensure there should not be any leakage. 4- Check oil level. 5- Check filter and clean or replace. 6- Clean return line filter or replaced.Check if any valve is there .Oil should return freely to tank. |
Hydraulic System Troubleshooting
How do you troubleshoot a Hydraulic system?
- Oil temperature is High
Check the cooling system .Check the Pressure drop or Oil leakage.Oil condition should be proper.Replace if necessary.
- Oil Leakage
Replace the Oil seal of valve and cylinder.Check all the hose pipe joints.Check the oil temperature .If it is high then it will damage the oil seal.
- Faults in Pumps
Read the Hydraulic pump troubleshooting guide of above paragraph.
- Leakage from Cylinder piston
Replace the oil seal.Check the piston.There should not be any scratch.This will damage the oil seal.Replace/repaire the piston if necessary.
- Valve faults
Dismantle the valve check its spool movement,spring,and oil seal (O ring).Replace if necessary.
- Hydraulic system Over heating
Low efficiency causes oil temperature high . And Over heating in Hydraulic system
0 Comments