1. Use sealant as much as possible, sometimes paint can be substituted to achieve the ideal sealing effect;
2. The appearance quality of rubber seals should be carefully checked before assembling; use special tools to press fit to avoid knocking and deformation;
3. Add lubricating grease according to regulations, clean and dredge the vent and one-way valve regularly;
4. Assemble under extremely clean conditions, without bumps, scratches, burrs and other attachments on the working surface of the parts;
5. Strict operating procedures, seals should be installed correctly to prevent deformation if not in place;
6. Grasp the performance specifications and use requirements of the seals, and replace the failed parts in time;
7. For thin-walled side cover parts, cold sheet metal correction is used; for shaft hole parts that are easy to wear, metal spraying, welding repair, gluing, machining and other processes can be used to achieve the original factory size;
8. The nut should be repaired or replaced with a new one, and the nut should be screwed to the specified torque.