Hydraulic cylinder repair tips from professionals | Magister Hydraulics

Hydraulic cylinders are essential components in many machines and equipment. They convert hydraulic fluid pressure into linear motion, which is used to move objects or perform work. Over time, hydraulic cylinders can wear out and need to be repaired. 

Steering hydraulic cylinders in store


Here is a guide on how to repair hydraulic cylinders:

Before you begin:

  • Safety first: Always wear safety glasses, gloves, and hearing protection when working with hydraulic cylinders.
  • Gather your tools: You will need a variety of tools to repair hydraulic cylinders, including wrenches, sockets, screwdrivers, pliers, a hammer, shop rags, cleaning solvent, hydraulic fluid, new seals and O-rings, and replacement parts (if necessary).
  • Identify the problem: The first step is to identify the problem with the hydraulic cylinder. This can be done by visually inspecting the cylinder for leaks, damage, or wear. You may also need to test the cylinder to see if it is functioning properly.
  • Consult the manual: Before you begin any repairs, consult the manufacturer’s manual for your specific hydraulic cylinder. This will provide you with specific instructions for disassembly, cleaning, and reassembly

Repair process:                                                                                                                                     

  1. Disassembly:
  • Drain the hydraulic fluid: The first step is to drain the hydraulic fluid from the cylinder. Make sure to dispose of the fluid properly.
  • Remove the cylinder head: The cylinder head is usually held in place by bolts or nuts. Remove these fasteners and carefully remove the head.
  • Remove the piston rod: The piston rod is held in place by a nut or cotter pin. Remove the nut or cotter pin and carefully remove the piston rod.
  • Remove the seals and O-rings: The seals and O-rings are located in the cylinder head and piston rod. Carefully remove them and inspect them for wear or damage.


  1. Cleaning:
  • Clean the cylinder bore: The cylinder bore is the inside of the cylinder where the piston rod moves. Clean it thoroughly with a cleaning solvent to remove any dirt, debris, or contaminants.
  • Clean the piston rod: Clean the piston rod with a cleaning solvent to remove any dirt or debris.

Clean the cylinder head: Clean the cylinder head with a cleaning solvent to remove any dirt or debris.

  1. Inspection:
  • Inspect the cylinder bore: Look for any signs of wear or damage, such as scratches, pitting, or scoring. If the cylinder bore is damaged, it will need to be honed or replaced.
  • Inspect the piston rod: Look for any signs of wear or damage, such as scratches, bending, or corrosion. If the piston rod is damaged, it will need to be replaced.
  • Inspect the seals and O-rings: Look for any signs of wear or damage, such as cracks, tears, or swelling. If the seals and O-rings are damaged, they will need to be replaced.

  1. Repair or replacement:
  • Replace worn or damaged parts: If any parts are worn or damaged, they will need to be replaced. Make sure to use the correct replacement parts for your specific hydraulic cylinder.
  • Repair minor damage: If the damage is minor, you may be able to repair it yourself. However, it is important to consult the manufacturer’s manual before attempting any repairs.
  1. Reassembly:
  • Install the new seals and O-rings: Install the new seals and O-rings in the correct locations. Make sure to use a lubricant to help them slide into place.
  • Install the piston rod: Lubricate the piston rod and install it back into the cylinder bore.
  • Install the cylinder head: Install the cylinder head back onto the cylinder and tighten the bolts or nuts to the correct torque specifications.
  • Fill the cylinder with hydraulic fluid: Fill the cylinder with the proper type of hydraulic fluid.
  • Test the cylinder: Once the cylinder is reassembled, test it to make sure that it is functioning properly.


  • It is important to use the correct type of hydraulic fluid for your specific cylinder.
  • Make sure that the cylinder is properly lubricated before operating it.
  • If you are not comfortable repairing hydraulic cylinders yourself, you should take them to a qualified technician.

If you have any additional questions or need help choosing a hydraulic cylinder replacement, do not hesitate to contact Magister Hydraulics customer support.

You can always check local distributors shops nearby!



Posted in faq

Post a Review