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Old 2007-08-02, 05:01 PM   #1
Evan Byrne
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Bearing problem: Stuck/Shifted bearing

So I was riding my uni yesterday and as I'm taking a break I see some shavings of powdercoat on my cranks and I see that my right bearing had shifted out and was almost hitting the cranks, this caused the lips of my yuni bearing holder to scrape the crank.


Normal :


Messed:



Its quite stuck, I can't move it with a screwdriver and a hammer. What shal I do?
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Old 2007-08-02, 05:04 PM   #2
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is there a spacer there?
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Old 2007-08-02, 05:06 PM   #3
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You can see the black spacer next to the hub, normaly the bearing should be touching that.
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Old 2007-08-02, 05:07 PM   #4
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Thats so weird.
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Old 2007-08-02, 05:13 PM   #5
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well theres to spacers on one side and only one on the other, unless thats the inside of the bearing. that would mean you've killed the bearing
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Old 2007-08-02, 05:14 PM   #6
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could the metal have expanded due to heat?

your in cali rihgt? so its going to be hot
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Old 2007-08-02, 05:20 PM   #7
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I think the part coloured in red has broken free
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Old 2007-08-02, 05:28 PM   #8
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No...That metal sleeve you see to the left of the bearing and to the right of the shim is a sleeve that goes over the axle to get the bearing to fit. The ID of the bearing is bigger than the axle so it needs this.
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Old 2007-08-02, 05:32 PM   #9
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Shouldn't there be spacers between the crank and the bearing also? That way it cant move.
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Old 2007-08-02, 05:34 PM   #10
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Well, i dont belive moment cranks extend farther over the spline, i may be wrong though, Can someone take a pic of thier moment crank on a moment hub for me? But even before i put another spacer on there, i need to move the bearing, its quite stuck right now.
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Old 2007-08-02, 05:50 PM   #11
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Take the crank arm off, get a deep well socket that just fits over the axle and tap the bearing back down evenly. Using a screwdriver doesn't put even pressure around it and will just tweak the bearing.
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Old 2007-08-02, 05:51 PM   #12
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Quote:
Originally Posted by Racenut
Take the crank arm off, get a deep well socket that just fits over the axle and tap the bearing back down evenly. Using a screwdriver doesn't put even pressure around it and will just tweak the bearing.


I don't have a socket that big.
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Old 2007-08-02, 07:30 PM   #13
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That looks like a KH Onza crank

Like my 05 KH24, and unlike my 07 KH20 (with the moment hub. So, if I am right, you can just take out the center axle Allen bolt, and remove the crank without a puller, as that should be a non tapered spline (unlike the tapered spline moments)
Find a pipe, buy- borrow a socket to drive the bearing back. It is important not to hit the outer race driving on the bearing, or it will be damaged.
Hows the bearing ? Does it turn smooth, or is it sticking ? One good thing about the older 05 hubs is that they use a standard bearing you can buy locally. A 20x42 I think. Just copy the # off the side of the bearing and work the phone. The new moments use a 22x42 which is a screwy non standard size (why couldn't they pick the standard 22x44 ?). So in this case you should be in luck, and able to find the bearing at a parts store in your town. Hopefully it turns smooth, and all you need to do is tap it back on. Don't mess with the seal !
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Old 2007-08-02, 07:50 PM   #14
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Quote:
Originally Posted by Evan Byrne
I don't have a socket that big.

how about a pipe or any cylindrical piece of metal that size.
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Old 2007-08-02, 08:17 PM   #15
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Quote:
Originally Posted by feel the light
Like my 05 KH24, and unlike my 07 KH20 (with the moment hub. So, if I am right, you can just take out the center axle Allen bolt, and remove the crank without a puller, as that should be a non tapered spline (unlike the tapered spline moments)
Find a pipe, buy- borrow a socket to drive the bearing back. It is important not to hit the outer race driving on the bearing, or it will be damaged.
Hows the bearing ? Does it turn smooth, or is it sticking ? One good thing about the older 05 hubs is that they use a standard bearing you can buy locally. A 20x42 I think. Just copy the # off the side of the bearing and work the phone. The new moments use a 22x42 which is a screwy non standard size (why couldn't they pick the standard 22x44 ?). So in this case you should be in luck, and able to find the bearing at a parts store in your town. Hopefully it turns smooth, and all you need to do is tap it back on. Don't mess with the seal !

The bearing is perfectly intact. I've only riden the uni for like an hour. The bearing is just stuck on the outside of its sleeve.
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