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post #2 of (permalink) Old 29th February 2016
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Re: clio mk 2, bearings, wheel cylinder

Could have been a faulty bearing.
Or could have been the way it was pressed in.
The pressing load should be on the part of the bearing that is a press fit.
In your case the outer ring as this is the part being forced in.
If the load is on the inner ring, it can be forced out of groove or even snapped.

Minimum is that the tool should be flat faced and only slightly smaller then the outer ring of the bearing.
Ideal is that the tool is recessed so no chance of any load on the inner ring.
Flat faced cannot be used if the inner ring is thicker then the outer.

Seen it happen when fitters pick up a piece of bar and think this'll do when it is too small a diameter.
Even if the bearing doesn't collapse, there may have been too high a side load and the balls/race can be distorted... leading to premature failure.
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