How to Replace the Gas Cylinder on a Herman Miller Aeron Classic Chair

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Күн бұрын

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Depending on your year of purchase, the process of replacing the gas cylinder on a Herman Miller Aeron Chair can change a good bit. So we put together this complete guide to take you through both cylinder types with ease.
Link to Purchase Herman Miller Aeron
Brand New From Herman Miller:
amzn.to/3PPZ3rx
Remanufactured From Crandall:
www.crandalloffice.com/shop/c...
► Top Activated Cylinder for Chairs Made Before 06/26/2013:
www.crandalloffice.com/shop/c...
► Side Activated Cylinder for Chairs Made After 06/26/2013:
www.crandalloffice.com/shop/c...
Table of Contents
0:00 Introduction
0:17 Top Activated Cylinder Instructions
0:23 Cylinder Removal
1:19 Cylinder Replacement
2:12 Set Screw Test and Adjustment
3:51 Side Activated Cylinder Instructions
4:03 Disengaging the Cylinder Cable
4:52 Cylinder Removal
6:00 Cylinder Replacement
6:25 Reengaging the Cylinder Cable
7:09 Side Activated Chair Reassembly
7:29 Final Remarks
Top Activated Gas Cylinder Replacement Instructions
1. To begin this process, invert your chair so it can be securely worked on.
2. Next, remove the cylinder and base from the core of the chair by twisting the cylinder out from the core with a pipe wrench. This is held in only by friction, but it can get quite tight from regular sitting. Don’t be afraid to muscle this step.
3. Next, remove the old cylinder from the base by hitting it from the underside with a hammer. This is also a friction fit and may take some time and muscle.
4. Now you can install the new cylinder by inserting the small end into the hole on the bottom of the chair core. The base can also be reinstalled over the thick end of the cylinder at this time.
5. Now flip the chair back to it’s wheels to test the set screw (the screw that activates the cylinder). If your chair doesn’t lower or raise as its suppose to, then this screw is what’s causing that.
6. The set screw is located inside the plastic housing under the seat of your chair directly over the cylinder. Make half turns with an Allen key or a T-25 torx bit to adjust the screw until your chair is working properly.
7. Once everything works as intended, all that’s left is to close up the plastic housing and enjoy your new cylinder.
Side Activated Gas Cylinder Replacement Instructions
1. To begin this process, invert your chair so it can be securely worked on.
2. Before you remove the cylinder, you’ll need to disengage the cylinder cable. This cable can be located in the plastic housing under the seat of the chair.
3. To disengage the cable, first pop the white tube from the clip, and then unloop the metal bead from it’s clasp. Now the cylinder can be removed without damaging this cable.
4. Next, remove the cylinder and base from the core of the chair by twisting the cylinder out from the core with a pipe wrench. This is held in only by friction, but it can get quite tight from regular sitting. Don’t be afraid to muscle this step.
5. Now you can install the new cylinder by inserting the small end into the hole on the bottom of the chair core, orientation doesn’t matter as the cable connects spin. The base can also be reinstalled over the thick end of the cylinder at this time.
6. Now you’ll need to reengage the cylinder cable. To reengage, first place the metal bead in the curved clasp, then press the white cylinder into it’s clip. Try giving the height adjustment lever a press, if the cable compresses, then everything is in order. If the cable does not compress, then the issue is unknown, and our customer service will help you diagnose the cause.
7. Lastly, flip the chair back to it’s wheels and seal the plastic housing. Enjoy your new cylinder!
Crandall Office Furniture has been remanufacturing Steelcase & Herman Miller office chairs since 2002, and since then has grown to become the largest remanufacturer of high-end office seating in the United States. We see and work on thousands of these chairs every year, which gives us a unique insight into how they stand up to long term use, where they fail, and how to fix them. If you're looking to learn more about high end seating, you're in the right place!
► Learn More About our Remanufactured & Refurbished Chairs and our company at: www.crandalloffice.com/

Пікірлер: 250

@CrandallOfficeFurniture 8 ай бұрын

We are now shipping to Canada! Check it out at Crandalloffice.com

@doncaruana 2 жыл бұрын

The set screw is actually a 4mm hex key. The torx is a hack. Also, for anyone getting that cylinder out, you may need some sort of hollow pipe on the end of a pipe wrench to get enough leverage to turn it. Lastly, take the base and a home depot bucket. Put a towel around the edge of the bucket to cushion the base, turn it upside down and tap it with something hard (like a 5lb sledge).

@andynorthway6388 2 жыл бұрын

Second the "tapping" with a sledge hammer

@coxboyd1 2 жыл бұрын

+1 use a bucket

@georgesmith4639 Жыл бұрын

I used a 36" pipe wrench and even with that it barely came out.

@markola Жыл бұрын

@@georgesmith4639 I still can’t get it out :(

@jasontorrey4963 Жыл бұрын

Yes, that's what I found -- the 4mm hex bit worked like a charm which means that the Torx T-25 is the wrong tool/bit.

@BradR4Z0R 2 жыл бұрын

Ive had this chair about haf my life (16 years) the past 5 years Ive been dealing with a broken cylinder. Thanks for saving my day with this video!

@CrandallOfficeFurniture Жыл бұрын

Oh we are glad that this was able to help you!

@windhawk2 2 жыл бұрын

Bravo. Thank you for this! The Set Screw adjustment was so important and really helped me finish the job.

@johnnewell5025 2 жыл бұрын

Thanks, very helpful. It's crazy how tight those cylinders can get.

@andyhill157 Жыл бұрын

Thank you sir! Pneumatic cylinder replacement was easy peasy thanks to this video! And the new cylinder (from Crandall) is solid as a rock -- no more multiple adjustments a day!

@CrandallOfficeFurniture Жыл бұрын

Wonderful! yay! We are happy that we were able to help you. Have a great day!

@EAJoeJD Жыл бұрын

Today received & installed a replacement cylinder for my 1997 Aeron. Works perfectly! Thank you!

@CrandallOfficeFurniture Жыл бұрын

Great to hear!

@RealStuntPanda 2 жыл бұрын

My experience: Twisting the gas cylinder out was easy but that's because I already have an 18 inch pipe wrench and a 36 inch breaker bar pipe so it came right out. The hard part for me was getting the cylinder out of the base! After doing this here are my ProTips: If the cylinder doesn't come out easily spray the edges between the cylinder and the chair base on the top and bottom with silicon lubricant. Let it soak in for a few hours. Never, ever use a petroleum based lubricant on plastic and especially not on rubber as it will deteriorate the polymers over time. When whacking the cylinder out of the chair base make sure to put a piece of wood on the top of it. Otherwise you risk deforming the cylinder's top so it might not fit through the base (high school shop class hint). My classic $1200 Herman Miller Aeron is now fixed; for $34. I don't blame HM for the cylinder failure as the chair _is_ over 12 years old. I'm just glad I could fix it for so cheap, and I already owned all the tools to do so!

@rafi_on_youtube 6 ай бұрын

I’m struggling to even tighten my 18” pipe wrench onto the cylinder. Any advice?

@RealStuntPanda 6 ай бұрын

@@rafi_on_youtube I used a pipe on the handle of the pipe-wrench to give me leverage. Just using the pipe-wrench I couldn't move it a bit. Then I put that pipe on the handle of the wrench and it was a breeze. You need that leverage.

@rafi_on_youtube 6 ай бұрын

@RealStuntPanda Thank you. My issue isn't the leverage (yet), it is more just getting the wrench to fit snug onto the cylinder. It is my first time using a pipe wrench and once the jaw/teeth are around the cylinder, I am finding it difficult to tighten the adjustment nut to the right degree that the jaw/teeth actually grip the cylinder and don't simply oscillate around the cylinder when applying force. Should the cylinder be positioned at the 'back' of the C-Shaped Head?

@cashox4 6 ай бұрын

Mine is nearly 20 years old - but got the pipe wrench and new cylinder in a draw waiting for the swap - and now is the time as my gas cylinder is now really playing up :) cant wait to try this tomorrow - not....

@cashox4 6 ай бұрын

so just finished putting new one in, but taking old one out was *phew* seriously hard work - did the full karma sutra with my chair before the old cylinder started to budge - and it came out with a substantial amount of grime, so yeah - not always easy, thats for sure !

@pwalkleyuk 4 ай бұрын

Thank you from the UK. My aeron is nearly 20 years old and I just hadn't realised how bad the old gas lift had got. Took less than 5 minutes to put the replacement in with this. Thank god I had inherited a big pipe wrench though - no way was it coming out without some serious leverage !

@CrandallOfficeFurniture 4 ай бұрын

Glad to be of service!

@ezraschwartz5201 2 жыл бұрын

Thank you for this video!!! I had my chair since 2007, and I attribute to it solving some back and neck issues I previously had. It looks like new, but now, with a standing desk, and much larger monitors, I found the the highest position I could get the chair to, was still too low for me to look at the top part of my screens without looking up and pressuring my neck. At some point the lightbulb cam on that maybe there are longer cylinders (I had no idea what this part is called). This was the first video I watched, but was not paying attention to the Crandall. After searching online for the parts (including a torx T25 which I did not have), I purchased a longer cylinder and a let rest from Crandall - absolutely fantastic customer experience when I called to make sure I order the right height. Parts arrived quickly, and it was a delight to see that the video was also made by Crandall!. I followed the instruction (I have the first model shown). I used a bit of canola oil to lubricate the old cylinder because it did not budge - that worked extremely well and within minutes I had the chair set up. Need to turn the Torx (T25 worked for me too) about a full circle counter-clock wise and now I’m writing this comment sitting on my renewed chair at a very comfortable position for my neck. Thank you!

@CrandallOfficeFurniture 2 жыл бұрын

Thank you so much for the positive feedback, if you need anything else don't hesitate to reach out!

@EarlOrlandoo 2 жыл бұрын

I want to make the exact same modification to my Aeron. I need to make it about 2 inches taller (compared to the stock cylinder). What cylinder size did you buy?

@dmannion81 6 ай бұрын

Just finished installing a new cylinder in my Aeron Posturefit SL -size C, and was very east thanks to this video.

@CrandallOfficeFurniture 6 ай бұрын

Great to hear!

@lucbegin7334 2 жыл бұрын

Thanks for the great video that allowed me to replace my 2005 Herman Miller Aeron Classic very easily. 2 tips: 1- put the chair on the ground on its side, preventing it from rotating with your foot 2- do use a 24" pipe wrench for easy leverage and no issues Cheers

@risajajr Жыл бұрын

Great suggestion! This worked for me. I don't even have a 24" pipe wrench, more like 16". But with the chair on the ground I was able to use my body weight to hold the chair in place as well as push the pipe wrench down to loosen everything.

@lucbegin7334 Жыл бұрын

Happy it helped!

@jasontorrey4963 Жыл бұрын

I followed these instructions for my 2008 Aeron chair and was able to successfully replace the gas cylinder. It took A LOT of banging on the pipe wrench to loosen the gas cylinder, but once it came loose the rest was pretty straightforward. The new gas cylinder required a set screw adjustment, and I was able to do this with a hex bit vs. the Torx T-25 mentioned in the video.

@CrandallOfficeFurniture Жыл бұрын

Awesome! Thank you for watching.

@rafi_on_youtube 6 ай бұрын

I’m struggling to even tighten my 18” pipe wrench onto the cylinder. Any advice?

@dgarvin57 11 ай бұрын

Had a hard time loosening the cylinder from my older Aeron. I turned the chair over on a box and used a pipe wrench, but couldn't get a good hold on the chair for leverage. Then I saw another video from Crandall's where she turned the chair over on it's front so the front of the seat was firmly on the ground and the legs were sticking up at an angle. That allowed me to me to apply more leverage on the pipe wrench and it turned, then came out easily. Popped the cylinder out from the legs as shown here. Then after putting the new cylinder in, had to adjust it because it went down when I sat on it. Used the 4mm allen wrench and turned about a half to one turn counter-clockwise. All fixed. Thanks for showing us how to get more life out of these expensive chairs.

@CrandallOfficeFurniture 11 ай бұрын

We are so happy that you were able to fix your chair and that we were able to help with that process. Have a great day!

@gavinmaloney6773 8 ай бұрын

Excellent video. Thank you! About to swap out my pneumatic gas lift.

@CrandallOfficeFurniture 8 ай бұрын

Glad to Help! Thank you for watching

@TT-pr9bx 2 жыл бұрын

Nice. I was getting the wobblies when it was near max height. Followed this for the cylinder swap and didn't need to mess with the screw. Done.

@cashox4 6 ай бұрын

finally got serious wobblies, need to do this now - after nearly 20 years with a chair that i purchased second hand in the first place - amazing how sturdy these chairs are ! made to last, unlike so many things today.

@1480750 Жыл бұрын

Another '97 Aeron repaired. The pipe wrench to get the seat off worked well. To get the cylender out of the base I ended up taking the wheels off and then using the base to bash the bottom of the cylender against my concrete basement floor. It worked much better than the mallet I was using. I had to adjust the set screw in mine. Someone has said that it's a 4mm allen but a 5/16" allen worked well in mine. It's such low torque that just about anything you could fit in there will turn it.

@cpljph 2 жыл бұрын

Thank you for this video. I had the cylinder replaced in less than ten minutes!

@CrandallOfficeFurniture 2 жыл бұрын

Glad you found it helpful and were able to get your chair fixed so quickly! :) Thank you for watching!!

@taccos 2 күн бұрын

Saved me so much money thank you!!!!!

@brendonla 10 ай бұрын

Great video - really helped me swap out a bad gas canister. Thanks!

@CrandallOfficeFurniture 10 ай бұрын

Glad it helped

@tank2003ful Ай бұрын

Watched this video fix my chair, Thank You very much

@CrandallOfficeFurniture Ай бұрын

We are so happy that it helped you! Please let us know if there is anything else we can help with.

@gooseblack8485 2 жыл бұрын

Great video. Exactly what I needed. Thanks so much!

@CrandallOfficeFurniture 2 жыл бұрын

Glad it was helpful for you! Thank you for watching! :) Don't forget to subscribe if you haven't already!

@lucasbrown212 2 жыл бұрын

Extremely helpful video. Thank you!

@CrandallOfficeFurniture 2 жыл бұрын

Glad you found it helpful :)

@JeaneAdix Жыл бұрын

thanks fixed my chair thats been broken for 6 years

@CrandallOfficeFurniture Жыл бұрын

Glad to help!

@BBRandom Жыл бұрын

@@CrandallOfficeFurniture Yeah I second this, thought I was going to need to replace the cylinder and figured I'd watch a video on how first. Got to the "set screw test and adjustment" section and was like .... huh well mines not responding so maybe I just need to do this part. Didn't even take 5 minutes and the fudger is working again.

@justonemori 10 ай бұрын

Thanks a million! I used a pipe wrench for the top and a brass hammer for the base. BTW they make heavy duty cylinders if you look around so hopefully I won't have to change it for a long time.

@CrandallOfficeFurniture 10 ай бұрын

Thank you!

@evans1946 11 ай бұрын

Great video! I found that a pipe wrench wasn't enough, I needed to slide a pipe extension on the wrench for about 3 feet of leverage and it still took a lot of force to break the cylinder free. For the base I inverted it over a 5 gallon bucket, held a short piece of wood over the cylinder end, and gave it a hard whack with a 5 lb sledge. Be sure to wrap a towel around the rim of the bucket or as I discovered it will mark the base. Once the bad cylinder is off the rest is easy, though I used an allen wrench to adjust the set screw.

@CrandallOfficeFurniture 11 ай бұрын

Yeah sometimes the cylinders can be really set in there but you did the right thing and I’m glad we were able to help with the video. Thanks for watching!

@raymondoliva4766 2 жыл бұрын

Hello! Curious if following this tutorial could help me change an Aeron stool to a chair?

@cashox4 6 ай бұрын

My chair is probably about 25 years old as I bought mine in central london back in the day - the cylinder has been threatening to give in over the last 2 years or so, but has now finally got the serious wobbles, have the new cylinder and the pipe wrench in a drawer, will be pulling them out tomorrow to hopefully fix this issue :) wish me luck !

@CrandallOfficeFurniture 5 ай бұрын

How'd it go?

@dubcheck2943 2 жыл бұрын

Handy video, thanks. I was too cheap to buy a pipe wrench. Just used a standard set of grips with a pipe over handle for leverage. Wasnt easy but got the job done. Removing from the star base, suprisingly out on first hit.

@coxboyd1 2 жыл бұрын

Vice grips + pipe didn’t work for me. Picked up a pipe wrench at harbor freight for $12. Took the piston right off

@CrandallOfficeFurniture 2 жыл бұрын

Glad we could help, they can be a handful.

@lorimorrissey9616 5 ай бұрын

Thanks so much for this video! You saved my chair :)

@CrandallOfficeFurniture 5 ай бұрын

So happy to hear that! Thank you for watching.

@xtroy.b 2 жыл бұрын

Great video. In what case would you need to adjust the set screw clockwise to tighten it? My chair is very bumpy when I pull the lever but it holds my weight and it's position otherwise

@CrandallOfficeFurniture 2 жыл бұрын

That's correct, you'll want to tighten the set screw in this case, and correct again that you'll want to adjust it clockwise. Only make small adjustments at a time :) Let us know if there's anything else we can do to help!

@Shawns_snapshots 10 ай бұрын

Thank you, I was able to repair my 1997 Aeron, feels factory new.

@CrandallOfficeFurniture 9 ай бұрын

Awesome! You are welcome.

@BenGarcia Жыл бұрын

These instructions work, but it took 3 of us to get the tube off of the chair, two to hold it down, and 1 with a pipe wrench and extension. But it came out. Removing it from the roller base was simple, two solid wacks.

@CrandallOfficeFurniture Жыл бұрын

Yes they can be set in there pretty good

@pashaUCSD Ай бұрын

Very helpful, thanks.

@CrandallOfficeFurniture Ай бұрын

Glad to help!

@StanAllDay 2 жыл бұрын

Thanks ur the man!

@petermadlberger8309 4 ай бұрын

Thank you, greatings from Tyrol!

@CrandallOfficeFurniture 4 ай бұрын

Our pleasure!

@kenspelke5099 2 жыл бұрын

This is very helpful - thank you! Do these replacement steps also pertain to the newest remastered Aeron chairs with side height lever? I need to swap out a high height cylinder with a standard height one.

@CrandallOfficeFurniture 2 жыл бұрын

It should be similar - the remastered switched back to a top activated style cylinder - we will be shooting a video for this in the future.

@johnlay4227 2 жыл бұрын

Where can I get a stand like that? I work on these quite a bit

@ChameleonQuan 2 жыл бұрын

Will replacing the cylinder stop any wobble issues?

@brkatzdad 2 жыл бұрын

Hello I need to replace a similar cylinder from an older Eames Softpad Chair. Can you give me any suggests as to how to remove that cylinder. On the top it seems to be surrounded by a shiny black epoxy ring but perhaps that is not touching the cylinder but it only holding the collar that the cylinder slides into. Thanks for your help

@CrandallOfficeFurniture 2 жыл бұрын

Can you email some pictures of your chair to contact@crandalloffice.com - we'd like to take a closer look before giving any specific recommendations.

@IsaneClimax 11 ай бұрын

THANKS!

@CrandallOfficeFurniture 11 ай бұрын

You're welcome!

@VioletteToussaint 2 жыл бұрын

Hello! Thank you for the info! I have an old red Equa 2 (I think) swivel chair with an all-metal foot and cylinder, and it sinks. I found a replacement cylinder but it's on an US website and they don't deliver in the UK... How could I fix my chair?

@CrandallOfficeFurniture 2 жыл бұрын

We do stock the Equa gas cylinder, but unfortunately we're not currently setup for shipping to the UK. I would try making some calls to local remanufacturers or refurbishers to see if there's anyone over there that could help :)

@LuckyDrew7 2 жыл бұрын

Which gas cylinder do I need (top or side activated chair)? 2006 AE123AWB. Thanks

@ImadeIt4Ever 2 жыл бұрын

Hello, I have an old Herman Miller chair, from 2000. It's a size B and model AU123AWC. Which gas cylinder should fit for it?

@CrandallOfficeFurniture 2 жыл бұрын

Your chair should use the top activated style gas cylinder :) www.crandalloffice.com/shop/chairs/herman-miller/aeron/herman-miller-aeron-gas-cylinder/

@nintenjo64 2 жыл бұрын

Is the process the same for a HM Mirra chair? And can you get taller gas lifts? I am 6' 5" and been advised my chair needs to be around 80mm higher for corrected posture.

@CrandallOfficeFurniture 2 жыл бұрын

Please reach out to Kim via chat @ crandalloffice.com we would love to help you

@ChrisRWoods-px9hy Жыл бұрын

Thanks, for the video. I have a Aeron C. I'm looking to get the higher Stool cylinder and foot rest, can that be done?

@CrandallOfficeFurniture 11 ай бұрын

We don't recommend it!

@ChrisRWoods-px9hy 11 ай бұрын

@@CrandallOfficeFurniture Please elaborate? Can it be done? What parts are needed? I have a requirement but could not get the stool with Aeron C size chair.

@jeffsam16 6 ай бұрын

Should I use a 14 inch pipe wrench - or an 18 inch pipe wrench? Thank you

@nevilenobody606 Жыл бұрын

These videos make it look super simple but the reality is very different if your chair is old. A much smarter way is to disassemble the screw adjuster (very simple to do) and knock out the cylinder using a socket (it's also cheaper than buying a pipe wrench). Also applying WD40 is much easier from the top as it pools up and gradually soaks into the joint. Why? The cylinder has a slight conical shape narrower at the top so you need much less effort to free it when banging down compared to trying to twist it loose.

@big_boy_chris 2 жыл бұрын

When you use the pipe wrench on the gas cylinder, does clockwise/counter clockwise matter?

@CrandallOfficeFurniture 2 жыл бұрын

No it doesn't you are just trying to break the tapered union free -- either direction should be able to accomplish that :)

@hberg321 Жыл бұрын

Thank you for helping me solve a strange mystery with my Aaron chair! I tend to sit with my feet up and found that if I need to lean over to the left or happen to shift such that all my weight is on a certain place then the chair suddenly drops. I couldn't figure this out for the life of me. But what do we see with the "top actuated" style of Aaron chair? Why, we see a big lever sticking up that activates the gas cylinder. So clearly if I put all my weight on just the right spot, I'm bottoming out the seat fabric, pressing on the top of the plastic housing, which is pressing the level and activating the seat height mechanism. Based on the differences shown in your two demos I suspect it won't be possible to convert a top-cylinder model to a side-cylinder model, but maybe I can sand down the level a bit so it doesn't protrude as much or 3D print some reinforcement for the area so that compression of the plastic housing can't press on the lever. Do you by any chance have a solution for my Aaron Chair Gripe #2? The flip locks for the two armrest height adjustments keep coming loose which causes the arms to start sliding down. My armrests have fliplocks that look just like the ones on your sample chairs, not the older thumbscrew/setscrew style. I've been thinking about fabricating some kind of retaining clip to hold the locks closed but I'm all ears if you have something better.

@xtoxicxskorpion5848 2 жыл бұрын

I have a question if you don't mind. I want to buy the Aeron classic but it has the "old" top activated style cylinder but the "newer" Aeron classic has the side activated style cylinder. But why did the Aeron remastered version switch back to a top activated cylinder?? And do you recommend buying an Aeron classic with the top or side activated cylinder?

@CrandallOfficeFurniture 2 жыл бұрын

As long as the chair is in good functional shape, I would not be too concerned about top vs side activated. Not sure why they made the switch on the new remastered, but one is not inherently better than the other.

@larrymelman 2 жыл бұрын

@1:00 Notice how far the old cylinder appears to stick out past the base. Then @2:10 the new cylinder sticks out a LOT less. The cylinder in my 2011 Aeron Classic B sticks out 45mm past the base (leaving 1/2" of clearance to a flat floor). However since my office carpet is worn by having chair wheels in the same place for many years, the carpet bulges up under the center of the chair and the clip on the bottom of the cylinder scrapes into it. Do all cylinders stick out 45mm once they are seated into the base, or are they randomly different?

@CrandallOfficeFurniture 2 жыл бұрын

Depends on the cylinder and where that taper on the bottom of the chair interfaces with the base. The one we installed in the video is about ~1/2" difference in how far it sticks out the bottom of the base (it will seat further into the base once weight is applied & it gets fully seated)

@KidAMRadio 10 ай бұрын

Does this work for other Herman Miller chairs as well? I have a Celle I'd like to make taller.

@CrandallOfficeFurniture 10 ай бұрын

Not 100% sure, we will have to get back to you on that. Great question though!

@____HEISENBERG____ 14 күн бұрын

I have a Teknion Contessa. How do i adjust the screw on that? I bought a new chair cylinder and same things is happening. Sinks right back down completely when i sit on it.

@abledog006 2 жыл бұрын

I just found your video, and my cylinder is on there extremely tight. I purchased it way back in 2000! Is it a good/ bad idea to use a bit of WD-40 to help loosen it?

@Mr2greys 2 жыл бұрын

WD40 may work in a pinch but it isn't a very good lubricant (it's primarily a Water Dispersant). Get something like Jigaloo

@CrandallOfficeFurniture 2 жыл бұрын

If you are going to use anything, we recommend leaving the chair upside down overnight and applying penetrating oil to the interface between the cylinder and the mechanism. WD40 typically doesn't do much, but we've had mixed results with penetrating oil :)

@bac3phi Жыл бұрын

Does this tutorial apply to the HM aeron stool as well?

@CrandallOfficeFurniture Жыл бұрын

Yes it does

@WarfullSwan 2 жыл бұрын

I bought my chair a couple years ago second hand and not sure which year it was made, know the best way to find that out is?

@CrandallOfficeFurniture 2 жыл бұрын

There is a sticker under the seat that should have a year on it and if it doesn't after July 25th 2013 it will have a side activated cylinder and before will have a top activated.

@coolbugfacts1234 Жыл бұрын

My Aeron is from 97 and all I have is a pair of 10” water pump pliers so it took me getting it down on the ground and holding on while stepping down as hard as I could, even my entire body weight wasn’t enough. Luckily the cylinder popped out of the base no problem

@CrandallOfficeFurniture Жыл бұрын

Yea they get stuck in their pretty good!

@dragospetrache7493 2 жыл бұрын

Is there any possibility to adapt a side activated chair to a regular top activated cylinder? thank you! Need help because i cannot find any side activated cylinder in my country

@CrandallOfficeFurniture Жыл бұрын

No sorry we can't find anything that looks like this is a possibility.

@heheneji 10 ай бұрын

Id like to ship my aeron and would like to save some money on shipping. Can I still reuse the cylinder if it's still very new?

@CrandallOfficeFurniture 10 ай бұрын

definitely!

@johnathankim6721 2 жыл бұрын

Just bought a used classic Aeron. When I sit the chair feels a wobbly. Would changing the gas cylinder get rid of the wobbliness?

@CrandallOfficeFurniture 2 жыл бұрын

Please reach out to our customer service team contact@crandalloffice.com and we would love to help and get into more details about your chair

@killias2 2 жыл бұрын

I started this process, but I had to give up taking the cylinder for the day because it was just too difficult. However, I'm noticing that the raising/lowering isn't working any more, even after I adjust the set nail. Is this expected, due to the attempt to take the base off the chair, or should I be concerned that I broke something?

@mikej4730 2 жыл бұрын

Did get the cylinder out?

@killias2 2 жыл бұрын

@@mikej4730 I ended up using one of those kits to get it out of the top. With a buddy's help, I was able to get it out of the bottom. Everything is working fine now!

@mikej4730 2 жыл бұрын

Great you were able to change cylinder. I deal with these chairs on a regular basis, if not I would have told you how to change cylinder with minimal tools.

@BeerGogglesFTW 5 ай бұрын

This was helpful. However, removing the cover at 2:34 didn't seem accurate to mine. As if, in the video it was already partially lifted loose. My cover did not come off easily. And when it finally did, several clips broke. I would recommend a plastic prying tool instead. But I think the replacement cover on your website is reasonably priced, so I went ahead with that order today.

@Celexanomnom Жыл бұрын

so i changed my cylinder and now my chair is very wobbly where the cylinder meets the main chair body. the chair works but its extremely wobbly all around front back side to side. any thoughts on what the problem might be?

@CrandallOfficeFurniture Жыл бұрын

Please reach out to our customer service team and we would love to help you address this problem. If you can send a video to contact@crandalloffice.com of what exactly it is doing that would be great.

@briandress2448 Жыл бұрын

so i went to lower my chair and a long hisssssss and then now it won’t go up or down. do you think i need a new cylinder or just to adjust the set screw?

@CrandallOfficeFurniture Жыл бұрын

Try the set screw adjustment and if that doesn't work then you may need a new cylinder.

@Black1andGold1 Жыл бұрын

Need to use a pipe wrench was the only way to remove the old cylinder. The set screw hex adjustment was important as the amazon cylinder replacement did not have any instructions on the set screw

@mrshnatter9959 2 жыл бұрын

Thanks for the great video! A question though - these are expensive chairs, right? Should you need to be doing this? Looking to buy a bunch for a new office we are setting up. Their website says With limited exceptions, our products are covered by a 12-year warranty that includes parts and labor. (but then does have a long list of models that have shorter warranty). If we are going to spend that much, should we have to be replacing the piston a) at all - shouldn't it last under the warranty? and b) if it does fail in less than 12 years, why get your hands dirty? Just have THEM replace it under warranty?

@CrandallOfficeFurniture 2 жыл бұрын

Yes these are indeed expensive chairs, and they use the highest grade of gas cylinder you can buy (both OEM and our aftermarket replacements for our refurbished chairs). I'm not sure which website you are referring to with that verbiage, but our refurbished Aeron Classic chairs come with a 12 year warranty (which also covers the gas cylinder) - many cylinders make it much longer than that, but that can vary quite a bit based on the user and how much use the cylinder gets. If it does fail within that 12 year window, we will send you a replacement cylinder, though our warranty does not cover the labor to replace the cylinder. I hope this answers your questions - if you have any others or would like to speak with someone over here, please reach out to us through crandalloffice.com or email us at contact@crandalloffice.com

@blissfularrogance Жыл бұрын

Mr Schnatter - I've just replaced the gas cylinder in my Aeron (which I bought 2nd hand in 2002 and have been using on a daily basis ever since) - during the repair I noticed a sticker on the inner cover saying it was manufactured in 1997... Any office chair that lasts 25yrs (& can then be repaired for $30) has my vote!

@Oscar99929 2 жыл бұрын

Hi Mike, Replaced my top loading cylinder with your replacement cylinder but seat would not stay elevated. I adjusted the set screw out, but chair still stayed bottomed out. I then adjusted the set screw down a little at a time to no avail. When I got it all the way down, I sat on the chair and pulled the lever to go back up, and the plastic piece (at the cylinder) end broke. Chair is now up but fixed in place. What happened?

@CrandallOfficeFurniture 2 жыл бұрын

Is there any way you can email over a few pictures of your cylinder and set screw? Not sure what happened here, but with some additional information we will absolutely do our best to help you out! :) contact at crandalloffice.com

@leedilkie4028 2 жыл бұрын

did you remember to pull the protective plastic cap off the new cylinder?

@Oscar99929 2 жыл бұрын

@@leedilkie4028 I tried and it was hard to pull off so I thought it was supposed to be there. Plus - was not mentioned in the video I watched from the place of purchase! Thanks.

@Debkghtulvkfjkjfxjjcj Жыл бұрын

Anyone know if this procedure will work for a aeron remastered?? Thanks.

@CrandallOfficeFurniture Жыл бұрын

It should yes

@DGK284 Жыл бұрын

I purchased a replacement cylinder from Crandall's, and the installation went smoothly, just as shown in this video. The new cylinder works well, though I wonder if it will hold up as long as the OEM one. The weight of the replacement is 2.4 pounds; the OEM weighs 3 pounds. This suggests that the replacement is of inferior quality, though I'm guessing it would be difficult to find an OEM replacement for a discontinued chair.

@levigoldson4242 Жыл бұрын

No, it suggests it weighs less. It speaks nothing of quality.

@DGK284 Жыл бұрын

@@levigoldson4242 You'll notice that by using the word "suggests," I was indicating an uncertain, though plausible, assessment of it's inferior quality. Typically aftermarket parts (such as those used for cars) cut costs by using less material. I suspect the same is true here. Of course it's possible that the manufacturer could have saved weight and maintained quality by using more exotic materials for the structural members and seals, though the part would have cost much more.

@nickf7883 Жыл бұрын

Will this same process work for the remastered version?

@CrandallOfficeFurniture Жыл бұрын

Yes it should

@scotts4298 29 күн бұрын

Hello, will the hammer damage the old cylinder? Mine is still new but I want to modify the chair.

@CrandallOfficeFurniture 18 күн бұрын

Yes the hammer can damage the old cylinder as far as cosmetically but not function wise.

@scotts4298 18 күн бұрын

@@CrandallOfficeFurniture Awesome thank you!

@danvecchio5403 2 жыл бұрын

Is that white cap supposed to be removed?, if yes, how do you get it off? I see you did not remove it in your video.

@CrandallOfficeFurniture 2 жыл бұрын

Which white cap?

@BiggProduction 2 жыл бұрын

How do you know if your chair is top or side activated ?

@CrandallOfficeFurniture 2 жыл бұрын

Good question, if you remove the mechanism cover and there is a set screw at the top then it is a top activated, here is a video about that process. kzfaq.info/get/bejne/eZaIf5N1p9jLZXk.html

@automaticfantastic 7 ай бұрын

Wow you did not swear or marr it nearly as much as i did. Thanks for the help

@CrandallOfficeFurniture 7 ай бұрын

lol Glad it helped

@coredumperror 2 жыл бұрын

No matter how hard I try to force it, I can't get the cylinder to start spinning as part of the first step. Any advice? I'm using a Power Grip pipe wrench, which *seems* like the right tool, but maybe not? EDIT: A few minutes after I left this comment, I tried again after taking a closer look at exactly how you held the chair. Maybe adding to the text instructions about exactly where to grip the chair to apply maximum leverage would be a good idea.

@CrandallOfficeFurniture 2 жыл бұрын

If you need immediate assistance for any of your chair questions please reach out to us via chat on our website crandalloffice.com and we will respond asap thank you! Have a great day.

@buckleyrobinson7415 Жыл бұрын

Worked as expected, except my cylinder appeared to be in two pieces where it attached to the chair, like a sleeve. I had attach the pipe wrench to inner tube to get it out. You won't need a breaker bar for this. It's tight, but put some muscle into it and it'll spin. Biggest issue was bracing the chair from spinning. I had to place it on the floor and step on one side to make sure the entire chair didn't spin around. My cylinder popped right out of the legs with a good whack. No baby sledge needed.

@CrandallOfficeFurniture Жыл бұрын

We are glad you were able to get it out!

@mbiehl2 2 жыл бұрын

I own a herman miller aeron chair and is there an easy way to know if my chair is a side activated cylindar or a top activated cylindar?

@CrandallOfficeFurniture 2 жыл бұрын

The date of the chair on the sticker underneath should help identify which style of cylinder your chair has. Aeron Classic Chairs Made Before 06/26/2013 use a top activated cylinder, and Classics chairs made after this date use a side activated cylinder.

@mbiehl2 2 жыл бұрын

@@CrandallOfficeFurniture Thank you for the reply. I had to replace my seat pan back at the beginning of 2021 and I didn't keep the sticker that would have this info - is there possibly another, other than taking the cover off the bottom of the chair and looking?

@CrandallOfficeFurniture 2 жыл бұрын

@@mbiehl2 Removing the mechanism housing and looking will be the best way to tell without the sticker :)

@Will.M3 2 жыл бұрын

Anyone know how I can tell if my chair is top or side activated? Cheers guys!

@CrandallOfficeFurniture 2 жыл бұрын

if you have a top activated you will see a set screw under the mechanism cover, which this is how to take it off. kzfaq.info/get/bejne/d91pktiB1pm7inU.html

@danieleriksson1657 2 жыл бұрын

I have a new remastered Aeron that has a play or wobble in the cylinder that gives like 6-7 mm movement on the top of the chair, and you can feel it's in the cylinder, is that normal?

@CrandallOfficeFurniture 2 жыл бұрын

That does not sound normal based on the description - can you email over a video of what's going on there to contact@crandalloffice.com ? We'd be happy to take a look and see if we can help! :)

@danieleriksson1657 2 жыл бұрын

@@CrandallOfficeFurniture thank you very much for that! I have sent an email!

@soccerstarstud 2 жыл бұрын

Did you figure out what made your chair wobble? I'm having the same issue. My aeron gaming chair tilts front to back and side to side. It's driving me nuts! Please help!

@mikkelguy Жыл бұрын

hello everyone. hoping someone can help me. i just built a new desk and now my chair is slightly too low even when maxed out. can someone tell me where to buy one that is taller than the one that's already in the classic?

@CrandallOfficeFurniture Жыл бұрын

We have a video here that might be of some help with links in the description to purchase a stool cylinder. kzfaq.info/get/bejne/qtJhasKrx5edh58.html

@MejorNoLoDigo 13 күн бұрын

Do you have one for a Steelcase Amia 842?

@CrandallOfficeFurniture 11 күн бұрын

Here you go! www.crandalloffice.com/shop/chairs/steelcase/482-amia/steelcase-482-amia-gas-cylinder/

@slsperry27 2 жыл бұрын

I have 1998 Herman Miller Aeron chai. I received the top activated gas cylinder from you. I have tried several times to remove the cylinder. It does not budge. What should I do?

@CrandallOfficeFurniture 2 жыл бұрын

What kind of tools are you using to get the cylinder out? If you've got a pipe wrench, you may want to try putting an extension bar over it to give yourself some additional leverage. Also if you can get a friend to help, a second pair of hands to hold the chair can be a big help :)

@slsperry27 2 жыл бұрын

@@CrandallOfficeFurniture I used a 3/4 inch pvc pipe for an extension. With WD 40 on top and bottom of the cylinder, it came off. I am 75, so any one can do it. Taking off the seat helped.

@KorbinoSmeef 2 жыл бұрын

How can I tell if my aeron has a top or side activated cylinder?

@CrandallOfficeFurniture 2 жыл бұрын

The quickest and easiest way is by the date on the tag under the chair - if your Aeron Classic was manufactured prior to 06-26-2013, it should use the top activated style gas cylinder. If it was made after that, it uses the side activated style cylinder. This is only for Aeron Classic chairs, as the Remastered went back to a top button activated cylinder again.

@myanranana416 3 жыл бұрын

Aeron tilt cover noise fix next!!

@CrandallOfficeFurniture 3 жыл бұрын

We'll see what we can do :)

@rosscoghlan 14 күн бұрын

Any tips to get the gas cylinder out. It is not budging, I'm tearing the thing to shreds trying to get it out.

@CrandallOfficeFurniture 11 күн бұрын

Maybe a cheater bar to get more leverage?

@ragnarok7668 Жыл бұрын

Does this damage the cylinder? I was planning to disassemble the chair and ship to back to my home country.

@CrandallOfficeFurniture Жыл бұрын

just scuffs up the outer can but shouldn't cause anything to not function properly.

@ragnarok7668 Жыл бұрын

@@CrandallOfficeFurniture thank you for confirming this!

@CrandallOfficeFurniture Жыл бұрын

You're welcome

@rwoosh_master 4 ай бұрын

hi crandall! I am trying to replace my gas cylinder, how do I know if my chair is top or side activated?

@CrandallOfficeFurniture 4 ай бұрын

You will need to take the top part of the mechanism cover off and if you see a cable attached to the cylinder its side activated and if not and looking down you see a set screw with a bar going across then it's a top activated. 6/26/13 is the date where they changed over to side activated cylinders so if you know the manufacture date that will tell you too.

@rwoosh_master 4 ай бұрын

@@CrandallOfficeFurniture Thanks for the informative reply. Mine is made in 2007 so it's top sided. Thank you!!

@CrandallOfficeFurniture 4 ай бұрын

Of course, glad to help.

@heheneji 8 ай бұрын

Is this the same for the remastered one?

@CrandallOfficeFurniture 8 ай бұрын

They are both top activated cylinders, however the process will be different in regards to the set screw adjustment and the removal of the mechanism cover if needed.

@rc451x 2 жыл бұрын

What does top vs side activated mean?

@rc451x 2 жыл бұрын

And how do you tell which you have?

@patrickwalsh5655 3 ай бұрын

How do I know if my Aeron is side activated or top activated?

@CrandallOfficeFurniture 3 ай бұрын

Top activated has a set screw and the side doesn't

@RicardoCanFly Жыл бұрын

would changin the cylinder would make my chair higher?

@CrandallOfficeFurniture Жыл бұрын

If you got a stool cylinder then it definitely will. if you don't know if your chair is a side or top activated we can help you figure that out if you reach out to us via chat at crandalloffice.com and get you the correct cylinder.

@RicardoCanFly Жыл бұрын

@@CrandallOfficeFurniture i have a Herman miller aeron classic. I’m having trouble with the measurements. I’m looking at the 10 inch cylinder, does that mean 10 inches higher than stock?

@CrandallOfficeFurniture Жыл бұрын

The 10" Stool Cylinder raises 10" in length from its lowest point to highest point. at its lowest it is 26" at seat hight to 36" at its highest. They don't base the height from stock. Each cylinder has a min and a max extension and variable seat heights.

@sarirochford1405 Жыл бұрын

Does Crandall sell the cylinders?

@CrandallOfficeFurniture Жыл бұрын

Sure do here is the link. Here is the top activated link. www.crandalloffice.com/shop/chairs/herman-miller/aeron/herman-miller-aeron-heavy-duty-gas-cylinder/ Side activated link if your chairs age is after June 2013 www.crandalloffice.com/shop/chairs/herman-miller/aeron/herman-miller-aeron-side-activated-8-stool-gas-cylinder/

@tawaren 9 ай бұрын

I am unable to remove the cylinder from the legs, any recommendations?

@CrandallOfficeFurniture 9 ай бұрын

Here is a Video of more in depth on how to help that.kzfaq.info/get/bejne/pb5mns92y8XTm58.html

@tawaren 9 ай бұрын

@@CrandallOfficeFurniture Thanks, I've already tried wd40 but it still doesn't work, I've even broken the hammer already XD Now I'm going to try cold to see if that works.

@butopiatoo 3 жыл бұрын

How do you remove old cylinder if it is not extended? I can knock it off the base but nothing visible to unscrew from the seat bottom. HELP!!!!!

@CrandallOfficeFurniture 3 жыл бұрын

If you can't get the cylinder extended, remove the clip on the bottom of the cylinder and the entire black cover can should come off, allowing you to gain access to the part of the cylinder you need to grab with the wrench. Hope that helps!

@butopiatoo 3 жыл бұрын

@@CrandallOfficeFurniture thanks I’ll try that

@butopiatoo 2 жыл бұрын

@@CrandallOfficeFurniture Found another way to get the collapsed gas cylinder off (see my newer post above) that seemed easier to me. It worked and I got the new cylinder and new arm pads installed, but now I have a clearance issue where the your new cylinder scratches the floor if I am sitting in the chair and toll around. What is the solution to this problem? This is an original design B chair with the original casters.

@HMJM9 Жыл бұрын

Can you put the cylinder back once you have removed it?

@CrandallOfficeFurniture Жыл бұрын

Sure can!

@HMJM9 Жыл бұрын

@@CrandallOfficeFurniture Thanks!

@CrandallOfficeFurniture Жыл бұрын

You're welcome!

@bigrndahouse 4 сағат бұрын

I think my chair is toast. I put all my weight on the wrench and I heard the frame crack. The cylinder is still in there as if someone welded the thing to the receiver. I tried kicking it, standing on it, no go. It's in there so I guess new chair in my future

@yoshirainz 3 жыл бұрын

How do I identify if they are top or side activated? Also tapping as you did on the plastic housing did not remove it and I'm afraid to pry it open and causing damage to it.

@CrandallOfficeFurniture 3 жыл бұрын

The date of the chair on the sticker underneath should help identify which style of cylinder your chair has. Chairs Made Before 06/26/2013 use a top activated cylinder, and chairs made after this date use a side activated cylinder. Here's a picture of the mechanism housing removed, I've circled the two main attach points so you can see them. This is where you'll want to pry the housing off. imgur.com/a/MQn3i6w

@Bestself2015 3 жыл бұрын

Worked like a charm. I could not get the cylinder out with a 24” Pipe Wrench I bought from Harbor Freight. Then blasted PB Blaster and let it sit for 90 minutes. Tried again and came loose within a minute. The adjustment was helpful too with T25 as my chair would not raise initially with the lever.

@davidking77 3 жыл бұрын

@@CrandallOfficeFurniture My chair does not have a sticker that identifies when the chair was made. Is there another way to verify if the cylinder is top or side activated?

@CrandallOfficeFurniture 3 жыл бұрын

@@davidking77 The best way would be to remove the top cover and take a peek at the top of the cylinder - there will either be a set screw, or a little lever with a cable hooked into it

@davidking77 3 жыл бұрын

@@CrandallOfficeFurniture Thanks! I will take a look!

@brendonla 10 ай бұрын

how do u know the cylinder is going bad?

@CrandallOfficeFurniture 10 ай бұрын

Normally the cylinder either won't activate when lever is raise or the cylinder is constantly moving. If you think your cylinder is going out you can share a video with us in more detail to our email Contact@crandalloffice.com and we would love to help you out. Have a great day!

@GX9900 2 жыл бұрын

Honestly, if you bought a used aeron, using the pipewrench method is gonna be a nightmare. save yourself the energy and use the socket method from this vid kzfaq.info/get/bejne/mbyHmdKbtd6xpas.html