Rear brake not releasing correctly

[Fred Munro]

There are two common problems with the rear brakes, Mike. Note that my
experience is with the Girling brakes on the Type 44, not the S2 - I don't
know if you have the same system.
Remove the cable from the e-brake cam at the caliper. Pry the cam to apply
the brake and release. The cam should return to the stop on it's own. If it
doesn't, it certainly won't return with the cable attached. On the Type 44,
these cams can be popped out of the caliper body about 1/2", allowing you to
clean and lubricate the shaft. This usually restores free movement and
allows the cam to return to the stop. It should actually return to the stop
on it's own without the return spring installed if it is properly freed up.
While the cable is off, push/pull the cable in and out. It should move
easily. If it drags in the housing, the e-brake cam return spring will not
be able to return the cam to the stop.
Most of the problems I've seen have been a combination of a sticking cable
and a sticking e-brake cam.

HTH

Fred Munro
'94 S4  125k km

----- Original Message -----
From: "Michael Dewar - Sun Scotland" <Mike.Dewar at uk.sun.com>
To: <quattro at audifans.com>
Sent: Thursday, March 01, 2001 9:45 AM
Subject: Rear brake not releasing correctly


> Hi all,
>
> Hoping someone can advise on a small problem. Patient is an S2 coupe
> with Girling rear calipers.
>
> The handbrake arm can be moved freely by hand and with the handbrake
> off, the arm can be moved freely towards the stop. If the handbrake is
> applied and then released, the arm does not return to the same position
> against the stop. It stops (no pun intended) about 1cm short and
> therefore does not release the piston from the disc properly. What
> would cause this ?
>
>
> Regards,
> Mike
>