October 30, 2016 2 Comments

Are you constantly sitting down in your office chair only to find out that the cylinder no longer lifts up and down? 

Well, there are three options: Deal with the sinking chair, buy a brand new chair, or replace the broken cylinder with a new one. We'll show you exactly how to complete an office chair cylinder replacement.

Replacing the chair’s gas lift cylinder can be a great option and save you money...IF you replace the cylinder with one of high quality, you have the tools to remove the old one, and you know how to install it.

What tools will I need to complete the entire replacement process?

The older method of removing and installing a chair cylinder required the use of a heavy duty pipe wrench. However, The Office Oasis offers a full Cylinder Replacement Kit that includes cylinder removal tools and gloves.

Both methods will also require a rubber mallet or a basic hammer.

Removal Tools included in The Office Oasis' Office Chair Cylinder Replacement Kit:

Cylinder Removal Tools

Office Chair Cylinder Replacement
(Each and Every Step):

The Office Oasis created this instructional guide to help with the task of replacing your office chair cylinder. Installing a new chair cylinder is easy, but removing the old one can be quite the task. This instruction manual should assist in the entire process. Please follow the step-by-step instructions below.

Safety First! Please remember to use extra care when removing and installing your chair cylinder, wear gloves to protect your hands, and ask a friend, co-worker, or family member for help if you need assistance.

STEP 1:  Raise Chair Cylinder

Raise Chair Cylinder Lever

Use the chair lift lever to raise your office chair or stool to the highest position.(This releases the pressure inside the old cylinder)

Note: If your chair cylinder is so worn out that the piston no longer lifts, proceed to step 2.

STEP 2:  Attach Shaft Collars

Attach Shaft Collarstighten lower shaft collar on cylinder

1.  Gently lay the office chair on its side and gather the included tools that came with the cylinder.

2.  Separate the two provided shaft collars and attach them to the old chair cylinder using the shorter screws and Allen wrench.

3.  Tighten the screws so both shaft collars are hugging the cylinder, but make sure they can easily slide along the cylinder.

4.  Slide both shaft collars as close as you can to the chair seat.

5.  Tighten only shaft collar B so it clamps the cylinder very tightly and is not able to slide(Note: make sure the threaded holes in both shaft collars are not directly aligned)

Don't have these removal tools? 

Get the full Office Chair Cylinder Replacement Kit

Or you can get check out this video on how to remove a chair cylinder using a pipe wrench. (Still an effective method, but can be more difficult.)

STEP 3:  Thread In Screws

thread in screws

1.  Use the 2 longer provided screws to thread into shaft collar B (this one should be clamped tight against the cylinder).

2.  Using the Allen wrench, tighten both screws evenly so they begin to press against the shaft collar A.

STEP 4:  Remove Cylinder From Seat

tighten screws to release chair cylinder

As you continue to tighten these screws, shaft collar A will start to slide and the cylinder will pull away from the chair seat.

Note: If the cylinder is still stuck in the chair seat, return to step 3 and repeat steps 3, 4 and 5 again. Check to make sure shaft collar B is clamped tight!

STEP 5:  Remove Chair Base

Remove chair base

Okay, you’re halfway there! Now to just remove the chair base. This part can sometimes be very difficult. (Patience and Persistence is Key!)

Use a rubber mallet (ideal) or hammer w/ wooden block to strike the bottom edge of the old cylinder until the base is separated from the cylinder. (Make sure to hold the chair base with your other hand so the whole chair doesn’t move)

Note: Depending on the age/usage of the office chair, this step may require a lot of force.

Caution: Please be careful when using a hammer to remove the base to avoid injury.

What if the cylinder still doesn’t budge?

First try applying some WD40 or similar penetrating oil product to where the cylinder meets the chair base. Wait about 5 minutes, and repeat step 5.

If this method still doesn’t work, see step 5a.

STEP 5a:  Remove Chair Base. Take Two

Note: Only use step 5a if you are unable to remove the chair base from step 5. This step can be somewhat messy, so be sure to lay an old towel down under the chair & cylinder.

1.  First, double check that the chair cylinder is fully extended by using the chair lift lever.

2.  Using a standard flat blade screwdriver, take off the retaining clip on the bottom of the cylinder as illustrated in the above figures.

slide chair base away from chair

3. Once the retaining clip is removed, you will be able to slide the chair base and cylinder shell away from the chair. (See figure above)

4. Return to step 5 - The base will be easier to free from the cylinder shell now that it is disconnected from the chair.

STEP 6:  Install New Cylinder

office chair cylinder install

1.  Grab the new chair cylinder, and remove the plastic cap that covers the button - This part is very important, if you do not remove the plastic cap the cylinder will not function correctly.

Don't have a new chair cylinder yet? 

Check out our Office Chair Cylinder Replacement Kit 

(Includes highest quality class 4 cylinder, removal tools, gloves, and printed instructions)

Office Chair Cylinder Replacement


2.  Set the chair base flat on the floor. Place the new cylinder in the 2” hole located in the chair base. (Note: most chair cylinders are made to an industry standard size and will fit ~90% of all office chairs.)

3.  Place the chair seat onto the new cylinder by aligning the chair seat hole with the new cylinder.

4.  Sit on the chair and use the chair lift lever to test the cylinder.

Congratulations, your office chair cylinder replacement is now complete!

2 Responses

The Office Oasis
The Office Oasis

September 02, 2017

Yes, the kit comes with a brand new fully functional chair cylinder which does have a retaining clip.

Ayman Naguib
Ayman Naguib

August 26, 2017

Does the kit include a new retaining clip?

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