[Biturbos4] cv joint & caliper

[Douglas A. Jones]

Sorry this reply is so late...

I had this same problem when I replaced my rear pads about a year ago, as it turned out there was some kind of gunk built up on the piston.  After I forced the piston back into the caliber the brakes would bind.  I ended up pulling the piston completely out of the caliber and cleaning them up with a wire wheel.  The most difficult part is getting the rubber boot back on but after a couple tries it when on without an issue, I ended doing it to both sides.  The other down side is the brakes need to be completely bleed afterwards.

-Doug

-----Original Message-----
From: biturbos4-bounces at www.audifans.com [mailto:biturbos4-bounces at www.audifans.com] On Behalf Of mike
Sent: Saturday, December 17, 2011 11:45 AM
To: biturbos4 at audifans.com; quattro at audifans.com
Subject: [Biturbos4] cv joint & calliper

having discovered that the split & loose abs ring on the rear of my B5 S4 is part of the cv joint rather than a separate item a new joint has been sourced, anyone got any pointers as to how it comes off & goes back onto the driveshaft?

along similar lines, whilst doing a disc and pad change I discovered the calliper piston won't rotate more than about 10 degrees, it not seized as such because it still grips the disc when the brakes are applied but it won't push/screw back so new pads can be fitted. It has free movement for the 10 degrees but then goes solid,  I tried applying some force with the rewind tool and it broke the tool. I'm guessing some sort of internal unrepairable derangement but open to suggestions. _______________________________________________
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