- Confirm the position of the oil return hole of the hydraulic tank, the amount of oil, oil return, the position of the return hose and the smoothness.
- Identify whether the seal kit is aging or the chips are accumulated too much in collector result in be pulled into and scratched piston.
- Check the concentricity of the draw tube and confirm that the vertical run-out of the hydraulic cylinder and the connecting pipe is within the standard value.
- If the length of the draw tube is 100mm, the standard value of the run-out precision tolerance is within 0.1mm.
- And so forth, if the draw tube is run-out too much be result in the piston will be damaged.
- Cause hydraulic cylinder oil leakage. It is recommended to use one integrated molding to ensure that both ends are concentric.