Powered by Outside

Zero stack headset remove/install question

PB Forum :: Mechanics' Lounge
Zero stack headset remove/install question

 Post Message | Latest Comment
Author Message
flag greywolf999
Posted: May 9, 2021 at 17:57 Quote
I am replacing the headset on my bike. It's a zero stack headset from what I understand. Anyway, got the old bearings out and inner races, but now I need to remove the outer races. Looks like they are being held in by some kind of retainer that is either pressed in or hammered into the frame. It's a carbon frame. Here's a pic of what I mean, if it's not clear:

photo

As my note says in the picture, how do I remove this thing? I have a set of long punches with round edges made for removing outer races on differentials in cars (I'm an auto mechanic), I was thinking I could use one of those to gently tap on the race to push this retaining ring out with the race. Is that a bad idea? Don't want to risk damaging the frame. Otherwise, any other ideas? Thanks!
flag greywolf999
Posted: May 9, 2021 at 21:34 Quote
Wait a minute, after looking at that picture, I think I just exposed how much of a noob I am. I'm talking about removing the cup from the frame. That bearing race that's still in there is probably just stuck from build up of dirt and grease I think.

Anyway, can I use a long punch to carefully remove that cup from behind? Or should I really just get a LBS to use special tools to remove it and install the new one at the same time? I think I need a special press to install the new cup, right?
flag Reaperactual
Posted: May 10, 2021 at 3:13 Quote
The cup is one piece and press fit so not sure what you mean by separate bearing race but shouldn't be stuck, just normal tight fitting.

There is a specific tool for safer removal which avoids damaging/gouging inside of your headtube.

Example:-

https://www.amazon.co.uk/Quality-Headset-removal-extractor-Headtube/dp/B011IOU8WQ

You could make your own version with 1 inch diameter plastic pipe.

I used a long flat head screwdriver and hammer (alloy frame) to carefully and evenly knock out from inside with a few taps around circumstance which worked fine.

To press in new cups safely and evenly I greased the cups/head tube and used a homemade press tool, something like this which did the job perfectly well too:-

https://www.ebay.co.uk/itm/114548622646

Can't say if it's advisable to do yourself or not with a carbon frame so up to you but pretty sure if you're careful and take your time it's easily doeable Buddy. Wink
flag greywolf999
Posted: May 10, 2021 at 17:16 Quote
Cool, thanks for your help! Yeah, I don't think it'll be too hard. I have access to all kinds of bearing and seal drivers at my work, and if I can't make one of those work, and I don't want to risk damage, I can always take it to a shop and get them to do it for me. Probably wouldn't cost much. I'm gonna definitely try to do it myself though!
flag Reaperactual
Posted: May 10, 2021 at 22:25 Quote
No worries. You got this and you'll do it easily, worth it for the experience and reward.

Like anything it's a bit nerve wrecking but after the first time it's something you won't hesitate doing yourself again in future. Happy wrenching Buddy! Salute
flag the-one1
O+
Posted: May 11, 2021 at 6:03 Quote
I've used a wooden dowel (broom stick girth). Tap it from underside with a hammer.
flag greywolf999
Posted: May 21, 2021 at 17:33 Quote
Incase anyone was interested, I got it all done last weekend. Used one of my long punches and a hammer to get the old parts out. Then I built my own tool out of a piece of threaded rod and some nuts, washers, and the old races to press the new ones in. Worked like a charm! Thanks for your help!
  • Previous Page
  • Next Page

 


Copyright © 2000 - 2026. Pinkbike.com. All rights reserved.
dv65 0.009036
Mobile Version of Website