Hydraulic cylinder repair isn’t something that you should try yourself. Not only could the cylinder malfunction while in service, but there is also a clear danger of severe injuries during disassembly. When attempting to open a single-acting hollow cylinder, the force of the compressed spring could shoot the stop-ring into your face, possibly causing serious or even fatal injury.

Preparing to Repair a Hydraulic Cylinder

The first step in preparing to disassemble Hydraulic seals is to clean them to prevent dust, oil, grease, and other debris from entering the cylinder unit. Also, if at all necessary, renovations should be carried out in a safe environment. Simultaneously, emergency repairs can be required in the field; it is often best to perform maintenance and repair in an environment as free of dust and moisture as possible.

Hydraulic Cylinder Repair

There are various types of tubes, and the repair method varies based on which type is involved. Wire rings and threaded heads are the two most common types of cylinders, and that in the case of a rounded head valve, there would be either a fixed screw or a locking ring. During the overhaul process, all parts should be washed with a petroleum-based solvent, blown dry with compressed air, and covered with hydraulic fluid before being assembled.

Repairing a Wire Ring Cylinder

Next, replace the hydraulic cylinder piston seals and locknut—torque the locknut to the required value depending on its scale. The band should be installed to compress the inner wire ring on the head assembly — the band clamp cam mustn’t be over the top of the ring distance. If the band clamp is in place, secure it to ensure the wire ring is firmly seated.

Disassembling a Wire Ring Cylinder

The rod framework should be retracted for a wire ring cylinder and the outer steel wire ring removed. The cylinder seal repair package contains a plastic removal ring that can be straightened and inserted in the internal groove with the feathered end pointed into the tube itself. If the ring is not fully inside the groove as the rod is taken out, it may become entangled and lodged between the tube and the head, which is certainly something to be avoided. If the ring does not fit into the groove, delete it and try again.

Common Aspects of Hydraulic Cylinder Repair

The details for restoring threaded head cylinders vary from those for wire ring cylinders in several ways. However, there are certain parallels between the two procedures. If you are having trouble pressing the cylinder back in due to friction, the input valves can need to be slightly loosened. Polished materials must also be thoroughly investigated. Seals should often be replaced after removal, and when tightening crucial parts, precise torque values should be used. Finally, improperly reassembling or accurately installing Hydraulic seals can result in serious, expensive damage. 

The hydraulic cylinder repair process necessitates diligent attention to detail and meticulous visual examination, both of which may require several years of experience to learn. Hydraulic seal suppliers can do the remainder of the corrections, such as honing tubing and fabricating rods. Professionals may also troubleshoot the root cause of the harm that needs to be repaired.