How to Repair a Hydraulic Cylinder

How to Repair a Hydraulic Cylinder

Step 1

Hydraulic Cylinders Dis-assembly: Take off the cylinder from the machine. Open the cover of the cylinder using the bolts or screws and remove the piston out of the cylinder. Now loosen the input valves to reduce the pressure and slide the piston shaft in outward direction to detach it completely.

Step 2

Hydraulic Cylinders Inspection: This is a crucial stage of hydraulic cylinder rebuild, wherein, you have to perform a visual inspection to find out the main problem. If the cylinder bore is scratched or the piston shafts are bent, the system requires a qualified hydraulic repair shop. In case, if the shafts or bolts are intact, most likely the seals are ruptured leading to excess hydraulic fluid leak.

Step 3

Hydraulic Cylinders Re-pack the Seals: Using the seal kit and the repacking instructions for your cylinder carefully dislodge the old seals from its positions and fix the news ones in place of the old ones.

In this final stage of repair, lubricate the seals with the oil and gently slide the piston back into the cylinder system. Also, make sure the input valves are loosened for the piston to slide in smoothly. Lastly, before attach the cylinder again to your equipment, ensure you check for any leakage and the condition of the Hydraulic Cylinders hoses.

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There are chances of the piston rings to get damaged.

Whenever you indulge in some cylinder repair work, keep your repair tool kit ready for use. Normally, a tool kit consists of lubrication, new shaft seals with O-shaped rings and a new Hydraulic Cylinders rod.

Hydraulic Cylinders range from the most common household types to specialty types.Check out the website that specializes in wrenches at for details.
Or contact us
Company Name: Hang Zhou WREN Hydraulic Equipment Manufacturing Co., Ltd.
Address: No. 24, Xingxing Road, Linping, Hang Zhou, China
Tel: +86 571 8811 5720
Fax: 0571-88110210
Postcode: 311100