How to Repair Hydraulic Cylinders?


To repair a hydraulic cylinder you open the hydraulic cylinder ports, drain the hydraulic fluid and then expand the piston rod and remove the retaining ring. Take off the nut at the end of the piston rod and remove the piston and any other part connected to the rod. Wash and dry the cylinder barrel, piston, rod, piston and all other parts. Connect all the parts back onto the piston rod in the reverse order. Put in the piston rod and all its assembled parts back into the cylinder barrel.
Q&A Related to "How to Repair Hydraulic Cylinders"
Things You'll Need. Cylinder seal kit. Open-end wrenches. Rod end cap removal tool (optional). Torque wrench. Bench vise. Soft-jaw bench vise. Disassemble. Open the cylinder's fluid
Hydraulic equipment is widely used in construction, manufacturing and agriculture. Some heavy equipment that uses hydraulics and needs hydraulic repair and rebuilding are bulldozers
You can replace the rubber gasket.
First you have to diagnose for your. hydraulic cylinder repair. Bent Rods. Bent rods are a common cause of rod seal failure. Bending of cylinder rods can be caused by insufficient
3 Additional Answers Answer for: how to repair hydraulic cylinders
How to Repair a Hydraulic Cylinder
Hydraulic cylinders route fluid into one or more ports to push a piston into an extended or retracted position. The piston attaches to a rod that mounts to some surface or component in order to move it. These cylinders are also known as hydraulic... More »
Difficulty: Moderately Challenging
Hydraulic cylinders are the simplest of all hydraulic components to repair. If the piston seal is distorted, eroded or missing, this indicates that the barrel is oversize. In this case, either the barrel or the whole cylinder should be replaced. Check the rod for cracks at all points where the cylinder’s cross-section changes. Dye penetrant is ideal for this.
To repair a hydraulic cylinder, you have to disconnect it from the piece of equipment it is attached to. Being a pressurized piece of equipment it takes a lot of abuse and is build to withstand it. The cylinders are made of metal with special clips on both ends, and may need special equipment to take apart. All clips and seals must be checked for wear and brakes before re-use, and the cylinder is put back together the opposite of the way is was disassembled.
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