Generally, the hydraulic cylinder is disassembled and the sealing ring is replaced.
The end covers at both ends of the hydraulic cylinder are generally installed in two ways.
The larger hydraulic cylinder mostly adopts flange plate. Screw several bolts onto the middle cylinder block, remove the bolts, and slowly pull out the cylinder cover.
For the smaller hydraulic cylinder, the cylinder body and the cylinder head are threaded, and the rotating end cover can be removed from the cylinder body.
If you don’t know much about the hydraulic cylinder, you’d better ask someone to deal with it. It is easy to damage the sealing ring and internal surface during disassembly and assembly.