Bearibg cartridge from free hub side

I am trying to replace the free hub side bearing cartridge on this Formula RX-142 rear hub. It came stock on my 2018 Fuji Jari 1.7 and was not available after market and I can’t get docs on it.

Do I just push forcefully from the opposite side to force the cartridge out? I’m trying to avoid needing to buy a new hub and wheel set so I don’t want to damage the hub.

Update: here’s a better direct view Better view

  • 1
    That slot between 10 and 11 o'clock in the photo - is it a circlip? I'd explore that with some circlip pliers and see if it comes out. – Criggie Dec 19 '18 at 2:22
  • @Criggie - Had to look up circlip. I don’t think it is. Added a new photo above with better top view. – MikeJansen Dec 19 '18 at 2:39
  • Can you get the freehub off? – Andrew Henle Dec 19 '18 at 20:11
  • @Andrew - I have not been able to yet. – MikeJansen Dec 20 '18 at 0:51
  • I cant remove the lock nuts to get to the bearings? Am i right in saying you need 23mm cone spanners to remove them? Please help, I just want to remove the front wheel bearings. – Muz Nov 17 '20 at 14:37

Ideally you'll need a blind bearing puller to extract the bearing, most decent bike shops should have one handy. There doesn't appear to be anything preventing removal of the bearing, so the indents are not for bearing extraction. If you're lucky you can get in from the back of the bearing and simply punch it out with a hammer and punch, as bearings are simply a press fit. The tooling indents are most likely for the freehub mechanism removal. You may have to remove the freehub if you choose to go with the hammer/punch technique; they're not always easy to undo, as most designs tighten under pedalling forces.

  • Something like this? amazon.com/DASBET-Bearing-Puller-Hammer-Removal/dp/B074YMMFMG I try to do most of my repairs if I can especially if I can get the tools reasonably priced. – MikeJansen Dec 20 '18 at 16:16
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    @MikeJansen Yep just like that. You'll need to double check the kit you get fits the inner diameter of the bearing. This tool is also used often for dual suspension frame pivots if you work on mountain bikes. – fryshaun Dec 23 '18 at 1:28
  • The ID is 15mm which is well in range of the 4 different adapters that kit has. I have a bolt, nut and 1" OD washers to use as a press :) The OD of the bearing is 26mm so that should be perfect. – MikeJansen Dec 23 '18 at 15:03
  • Following up: Bearing puller that I referenced above worked great. – MikeJansen Jan 11 '19 at 21:10

Found a drawing of the hub.

Hope this helps. Hub

  • It's an exploded view of the hub. I will try to upload the picture. – Michiel Apr 29 '19 at 13:10

Based on the second photo, it looks like a threadded retainer ring of some sort.

Perhaps a park FR2 or similar would fit it ?

Image of FR2 tool

from https://www.parktool.com/product/freewheel-remover-fr-2

You might also be able to use some sort of 2-pin spanner to engage the slots and rotate it.

  • There is threading inside the freehub body but it stops a bit before the cartridge and that ring, so I’m guessing that ring doesn’t unscrew. Not sure what that threading is for though. The cassette goes over the body. – MikeJansen Dec 19 '18 at 5:14
  • The threads are for the cassette lock ring. Don't know what I was thinking :) I upvoted your answer because I think I need a similar tool to what you showed to get the freehub off. Not sure that specific tool has the outer clearance I'd need but I'm guessing there's a similar tool. – MikeJansen Mar 5 '19 at 15:04

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