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Jim Adney wrote:
On 18 May 2006 at 17:37, Chris Wright wrote:
It's quite likely that a wheel bearing is worn or loose and allowing the hub/brake disc to rock and rub on the pads. The pads are indeed self centring and not adjustable and normally would have a minute gap between themselves and the spinning rotor, which of course goes to nothing if the wheel bearing allows some rocking, so the pad squeaks on the disc. It's likely to happen more when side forces are on the wheel as when cornering and it may push the pad back in the cylinder a little when cornering harder so it then doesn't rub/squeak until it's eased itself out of the cylinder again. Check/adjust the free-play in the bearings before you do anything else.
This is all true, but I'll also add that if the car in question was made before early '68, then it's possible that it has an incorrect inner wheel bearing installed on one or both sides. VW changed the bearing dimensions in mid-68 and sometimes early cars get the late bearings installed by accident, just because people don't know about the change.
The wrong bearing will give you play that you can't adjust away.
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