A cylinder definitely calls for professional repair when you notice any leaking or power loss. When repairing hydraulic cylinders, your servicing professionals will perform the following steps:
Step 1. Disassembly - Remove the cylinder from the equipment. Take off the cap. Loosen the input valves to reduce the pressure and pull out the piston out of the cylinder to check for any damage or defects.
Step 2. Inspection - Visually inspect the piston to determine the problem. If there's a bent in the piston shaft or a scratch in the Cylinder Bore, you need to send it to a professional hydraulic repair service to fix it. A specialized machine and skills are required to create a new shaft or honing of the cylinder bore. This must be done to eliminate the scratches and restore the seal. If the shaft and honing have no issues then it is likely a damaged seal that is causing the leak.
Step 3. Repacking The Seal - Acquire a seal kit for your specific cylinder. The seal kit has all the needed seals and O-rings required to replace the damaged ones. Carefully, remove the old seals and exactly replace it with new ones in place. Be extra careful when handling the seals. Make sure you don't damage it in anyway. Otherwise, you have to repeat the process again.
Step 4. Re-assembly - Oil the seals using an oil or a hydraulic fluid and carefully, slide the piston back inside the cylinder. If it is hard to push the cylinder back due to pressure, check the input valves and loosen it to let the air out. The piston should easily be moved back and forth. If you think it is too tight, check the seals if they are in place. When the piston is already in, put back the cap. Test the cylinder first prior to re-attaching it to the equipment. Connect the hydraulic hoses and check for leaks.
If you think the task is way out of your league, contact ETS Inspection and Testing Services. We guarantee quality repair of your hydraulic cylinder to extend its life for longer.