- Confirm whether there is any external force caused by the installation of the detective plate or other fixtures.
- When turning test, the piston should be reciprocated in time to allow the oil temperature in the hydraulic cylinder to be evenly heated.
- Otherwise, the hydraulic cylinder will not operate normally.
- Therefore, it is necessary to regularly clean the gap between the sleeve body and the rotary valve to keep it clean and prevent foreign matter from invading.
- And pay attention to the chips or foreign matter in the hydraulic tank, if it is sucked into the hydraulic cylinder, it is easy to cause the hydraulic cylinder to be stuck.