common error:
        1. No pressure or insufficient pressure.
        Second, insufficient flow.
        3. The system has vibration and noise.
        4. The temperature of the system heating oil rises.
        Solution:
        One: 1. Check the motor steering; 2. Replace the pump or key; 3. Clean and repair the overflow valve; 4. Replace the spring; 5. Clean, repair or replace; 6. Check the wearing parts in the pump, cylinder and valve Condition and sealing of each connection of the system.
        2. Check the direction of the motor and adjust the speed of the pump to meet the requirements; 2. Replace the oil with suitable viscosity; 3. Replenish the oil to the cursor 4. Replace the spring; 5. Increase the diameter of the suction pipe and increase the passage of the suction filter Oil capacity, clean the filter screen, check whether there is air in; 6. Dismantle or replace the relevant components; 7. Adjust or replace the relevant components; 8. Check whether the pipeline connection is correct and the oil seal is reliable.
        3. 1. Tighten the connecting bolts of the pump and the pipe nuts or replace the sealing elements; 2. Repair or replace.

        4. 1. Increase the capacity of the oil tank properly, replace or add a cooling device; 2. Select the oil with suitable viscosity; 3. Improve the system design and reselect the circuit or hydraulic pump.