Rear bearing problems... - Wrist Twisters
 
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post #1 of 8 Old 06-19-2014, 07:11 AM Thread Starter
Milites Gregarius
 
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Rear bearing problems...

So I'm starting to think that I should just stay the hell away from anything more complicated than an oil change...

Couple months ago me and a buddy of mine decided to wing it and swap the rear bearings on my niner ourselves with tools borrowed from autozone. Anyway, aside from it being a bitch to get the old bearings out, it seemed to have gone smoothly and everything went in OK... until I took off the rear wheel the other day to swap tires and found this:



The bearing just fell out of the kush drive side when I pulled the wheel. Now, what I'm concerned about is that there is a ridge along the wall inside of where the bearing goes, a few millimeters in (about half the bearing width). Should that be there, or is that damage from riding on a broken bearing? Above the ridge, a new bearing falls right in to about half-way. Am I gonna need a new wheel or is this fixable?

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post #2 of 8 Old 06-19-2014, 07:26 AM
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Are those "All Balls" bearings?

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post #3 of 8 Old 06-19-2014, 07:27 AM Thread Starter
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Yep.

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post #4 of 8 Old 06-19-2014, 07:38 AM
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It certainly doesn't look very good. I have an extra rear (900rr) wheel with the bearings removed in the shop. I can grab you a few pics when I get home tonight so we can compare.

Just afew quick questions...

- Do you have a picture of the bearing bore?
- What "tools" did you use to install/remove the bearing?

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post #5 of 8 Old 06-19-2014, 07:39 AM
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There is a collar that inserts inside the inner diameter of that bearing (part 8 on the diagram) and fits pretty tight. Did that get left out when you installed the new bearing. It may have caused the problem if there was play between the axle and inner race of the bearing.
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post #6 of 8 Old 06-19-2014, 07:49 AM
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Thats your problem right there. Toss that & get some OEMs or get the Japanese Nachi bearings.

Rear wheel bearing (You need 2):

6204-2NSE Nachi Bearing 20x47x14 Sealed C3 Japan Ball Bearings: Deep Groove Ball Bearings: Amazon.com: Industrial & Scientific

Cush drive bearing:

Honda Motorcycle Parts 2007 CB900F A REAR WHEEL Diagram

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post #7 of 8 Old 06-19-2014, 08:35 AM Thread Starter
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Quote:
Originally Posted by HeliMech View Post
It certainly doesn't look very good. I have an extra rear (900rr) wheel with the bearings removed in the shop. I can grab you a few pics when I get home tonight so we can compare.

Just afew quick questions...

- Do you have a picture of the bearing bore?
- What "tools" did you use to install/remove the bearing?
Don't have a pic at the moment and the wheel is still on the bike (had to get it home). The ridge is probably a millimeter tall and half a millimeter wide.. doesn't seem even all around and feels a bit rough.


Tools were a slide hammer bearing puller and another one to get them back in (pretty much a customized equivalent of a socket to put on top of the bearing.. forgot what it was called)

Quote:
Originally Posted by marylandmike
There is a collar that inserts inside the inner diameter of that bearing (part 8 on the diagram) and fits pretty tight. Did that get left out when you installed the new bearing. It may have caused the problem if there was play between the axle and inner race of the bearing.
Will have to check again when I get the wheel back off but yeah.. that may have been the problem.

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post #8 of 8 Old 06-19-2014, 09:35 AM
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Quote:
Originally Posted by marylandmike View Post
There is a collar that inserts inside the inner diameter of that bearing (part 8 on the diagram) and fits pretty tight. Did that get left out when you installed the new bearing. It may have caused the problem if there was play between the axle and inner race of the bearing.
Actually, I was looking at the pic wrong and thinking that was the cush drive bearing. It's actually the wheel bearing. Disregard the above.

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