caliper return spring cam cleaning

[Fred Munro]

Hi Megan;

It doesn't come right out, it just pops up about 1/2" and stops. If it comes
right out, you've got other problems - and need a caliper rebuild :o).
I pop up the cam, use a thin strip of fine emery cloth to clean the rust off
the shaft, lube it well with FluidFilm, and pop it up and down a few times
to distribute the lube.
If you turn it side to side, you will clamp the pads so hard against the
rotor you'll have to beat the caliper off with a dead blow hammer to crank
the pistons back it. BTDT during the "learning process".

HTH

Fred Munro
'94 S4

----- Original Message -----
From: <WAUFX at aol.com>
To: <quattro at audifans.com>
Sent: Sunday, February 10, 2002 9:50 PM
Subject: caliper return spring cam cleaning


> Hello--
>
> I am in the middle of trying to free up the return springs on my old
> off-the-car 90q rear calipers, inspired by Fred Munro's post about his
> webpage for doing this on S-4 calipers.
>
> I just need to confirm one thing, the cam that rotates and is all rusty is
> NOT supposed to completely disconnect from the caliper, right? It's just
> supposed to pull out about 1/2" from the caliper?
>
> Fred says "Pop the cam in & out a few times, liberally applying lube. The
cam
> should now return to the stop on
>  its own, even without the assistance of the return spring."
>
> Fred, or anyone, do you mean push it in and out or completely separate it
> from the caliper? Thanks!
>
> Megan