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Rear Caliper Rattle

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Old 12-17-2008, 01:53 PM
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Default Rear Caliper Rattle

Anyone else have this problem? It seems my rear calipers rattle pretty loudly when the brakes are not applied. It goes away instantly when I apply the parking brake or foot brake. This is only noticeable when the windows are down.

It seems as if the pistons in the calipers are retracting too far. This allows the caliper to be 'loose' on its mounting bolts. Ive tried resetting them by pushing the pistons in and then reapplying the brakes, but it comes back exactly as before.

Its almost as if Im missing a retaining spring or something. Can someone post a bentley diagram of the rear S8 brakes? Any other suggestions?
Old 12-17-2008, 02:18 PM
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Can the pads glide easily. Is everything clean and lubed ?
Old 12-17-2008, 02:46 PM
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Yes, yes.
Old 12-17-2008, 08:00 PM
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Default Re: Rear Caliper Rattle

You can get a free parts ETKA diagram on vagcat.com. It looks like the same program as the dealers.
Old 12-18-2008, 12:04 PM
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Did you recently do brake work Tim? I'd hate to think the caliper mounting bolts are loose.
Old 12-18-2008, 12:36 PM
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nope. im gonna check it out again this weekend.
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