How to Remove Piston From Office Chair

Before attempting to remove the piston from your office chair, it is important to understand what it is and how it works. In an office chair, the piston transfers air from the seat cushion to the backrest. The piston inflates the backrest when the user sits in the chair. In this guide, we will be teaching you how to remove piston from office chair. After following these steps, you should be able to safely and easily remove the piston from your office chair.

How to Remove Piston From Office Chair

What is a Piston of Office Chair?

A Piston of an Office Chair is a small, round metal disk that is used to adjust the height of an office chair. A piston of an office chair is a mechanism used to create pressure and lift objects. The piston is powered by compressed air, or hydraulic fluid piston of an office chair is a mechanism used to create pressure and lift objects. Office chairs that use pistons of office chairs are more comfortable and supportive because they provide more support to the back and shoulders.

Easy 8 Steps for How to Remove Piston From Office Chair

If your office chair is stuck at an unnatural height, you may have to remove the piston in order to adjust it. To remove the piston, you will need to disassemble the chair. You can follow these steps to do so safely:

Materials You Will Need:

  1. A screwdriver
  2. Piston removal tool (examples can be found online)
  3. A pipe wrench

Step 1: Start by removing the seat

The seat is the top part of the chair that you sit on. It is made of durable plastic and can be easily removed. If the piston is stuck, you may need to remove the seat to adjust the chair’s height.

Remove the Chair Seat

Step 2: Remove the protective cover

Next, remove the protective covering that covers the gas cylinder. It is firmly attached to the mechanism below the seat. Use the screwdriver to remove the cover.

Step 3: Unscrew the four screw

Remove the screws that secure the chair base to the floor. In order to remove the piston from an office chair, you will need to unscrew the four screws that hold it in place. Use a screwdriver to do so. You will need to hold the screwdriver with the head pointed down and gently unscrew it. It will come out easily. 

Step 4: Remove the armrest

Once the screws are removed, you can remove the armrest by gently pulling it away from the chair. Do not yank or pull too hard, as this may damage the armrest. Be careful not to lose the screws, as they are important for retaining the armrest in place. Once the armrest is removed, forward to the next steps.

Step 5: Remove the Pin

You can take a few steps to remove a pin from an office chair. To start, you will need to remove the rear retaining rings from the seat channel pins. Next, you need to remove the lower pin from the headrest rod. While you are doing this, try to keep the chair one inch off the floor.

Remove the Rear Retaining Rings From the Seat

Step 6: Remove the piston

Once the screws and pins are removed, the piston can be lifted out by hand. If the piston becomes stuck, use a wrench to turn it until it begins to move.

Step 7: Replace a gas cylinder(If needed)

As you removed the screw and seat from the chair previously. If the gas cylinder is attached to the seat, a rubber mallet will help you separate it. Then, remove the cylinder. A pipe wrench is helpful for this job. Once the gas cylinder is out, you should have an easier time installing the new gas cylinder.

Step 8: Reattach the seat and back to the chair

After the new gas cylinder has been installed. For, reattach the seat first tight the four screws that hold it in place. Then place the armrest back in place. Reattach the seat channel pins and the rear retaining rings. Finally, your chair is back together and ready to use.

You can also check out Remove Hair From Office Chair Wheels.

Tips to follow:

  • Never use a hammer to remove the piston from an office chair because it can break the chair.
  • Make sure the chair is one inch off the floor to prevent the gas cylinder from landing on the floor.
  • Place the chair on a flat surface.
  • Be sure to dispose of the screws and the seat in a safe and responsible manner.

In conclusion, removing a piston from an office chair is a relatively easy task that can be accomplished by following a few simple steps. Be sure to use the correct tool for the job and take your time, as this process can be frustrating if done incorrectly. With a little bit of knowledge and patience, you can free your chair from its mounting prison in no time.

Use the Correct Tool

Frequently Asked Questions

Why is My Chair Not Going Up?

The cause of a chair not going up could be due to a number of reasons. Sometimes the piston needs to be replaced, and other times the unit that powers the pistons, the gas cylinder, may need to be replaced. If you are experiencing issues with your chair not going up, it may be helpful to check out our guide on replacing a gas cylinder in an office chair.

Are All Chair Pistons the Same?

Chair pistons are different depending on the brand of the chair. Some brands even have different types of pistons that are specific to their style of chair. It is important to know the type of piston your chair uses in order to avoid having to take it apart or replace it.


In conclusion, this article outlined the steps necessary to remove a piston from an office chair. By following the instructions provided, you should be able to do so without any issues. If you require assistance, be sure to consult a professional. If you have any questions or comments, please do not hesitate to contact us or comment down below.

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