Troubleshooting of hydraulic cutting machine X

- Feb 27, 2019-

Fault phenomenon:

speed slows down or rises after the crash can not rise or fall


Failure analysis:

1. Cylinder seal aging

2. Solenoid valve spool wear is serious

3. Pressure oil viscosity is reduced

4. The main relay is in poor contact

5. Main road cannot be switched

6. Solenoid valve is stuck


Method of exclusion:

1. Replace the seal

2. Replace the solenoid valve

3. Replace the pressure oil

4. Check the line

5. Cleaning the valve body