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Old 17-08-11, 09:04 PM   #2
Sid Squid
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Join Date: Jul 2003
Location: Skunk Works, Nth London
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Default Re: Replacing wheel bearings

The circlip won't be all that's holding them in - they're an interference fit in the housing/hub. But not that tight - if you're doing it right they'll come out with minimal force.

You'll need a long drift to get them out, and preferably a suitably sized drift/socket/the old bearing run down on a grinder to fit the new ones. Make sure they come out neatly and squarely, and that they go back in the same way, if they're cocked they'll be difficult to move, and in an extreme case the bearing recess can get damaged.

The sprocket carrier bearing almost always fits into a recess so you'll know when to stop tapping, but many wheels nowadays only have one bearing that stops in place, the other one is simply in a machined hole with no backing stop, that one goes in second and must *just* be brought up to the bearing spacer, so that there is no play, (ie the spacer is held neatly by the bearing inner races), but with no load and the bearings will turn freely.

Make sure that the seals and spacers are in good nick, and that the recess has a bit of grease in between the bearing and the seal.
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