The use and maintenance methods of jacks should achieve:
1. Before using the jack, first check whether the components of each jack are intact, the hydraulic joints are securely connected, the surface of the hydraulic oil pipe is intact and undamaged, and the hydraulic cylinder body is undamaged. During the jacking test, the hydraulic piston is pushed out and retracted normally.
2. Before use, carefully check the instructions and strictly follow the specifications in the main operating instructions. Avoid overloading, otherwise serious oil leakage may occur at the top of the electric hydraulic jack when the lifting height or tonnage exceeds the specifications.