How to deal with failures of hydraulic parts

Date:25 Oct 2021

How to deal with the failure of hydraulic accessories, […]

How to deal with the failure of hydraulic accessories, the following is the relevant introduction:
Analysis and troubleshooting of common failures of hydraulic pumps
a. Trouble phenomenon: no oil, insufficient infusion volume, pressure can not go up
Failure analysis:
1. The electric motor turns incorrectly
2. The suction pipe or filter is blocked
3. The axial clearance or radial clearance is too large
4. Leakage at the connection, mixed with air
5. The medium viscosity is too high or the temperature rise is too high
Method of exclusion:
1. Check the motor steering
2. Dredge the pipeline, clean the filter, and replace the new working medium
3. Check and replace relevant parts
4. Tighten the screws at each connection to avoid leakage and prevent air from entering
5. Select the working medium correctly and control the temperature rise.
b. Failure phenomenon: severe noise and severe pressure fluctuation
Failure analysis:
1. The suction pipe and filter are blocked or the filter capacity is small
2. Air leakage or air bubbles in the medium at the seal of the suction pipe
3. The pump and the coupling are not concentric
4. Low oil level
5. Low oil temperature or high viscosity
6. Pump bearing damage
Method of exclusion:
1. Clean the filter to make the suction pipe unobstructed, and select the filter correctly.
2. Add some oil to the connection part or the seal, if the noise is reduced,
The joint can be tightened or the sealing ring can be replaced; the oil return pipe port should be in
The port should be below the oil level and a certain distance from the suction pipe
3. Adjust the concentricity
4. Add oil
5. Heat the oil to the proper temperature
6. Check (touch by hand) the temperature rise of the pump bearing part