2000 A6 2.7T brake squeal

[Mark R]

The squeal is the pads vibrating on the backing plates.  You need a
lubricant.  The sticky glue type of products don't work well.  Use the same
type of product you lubricate slider pins with.  Permatex makes a product
called ultra disk brake caliper lubricant.  I personally use the 3M Brake
Lube.
http://solutions.3m.com/wps/portal/3M/en_US/3MAutomotive/Aftermarket/Products/Product-Catalog/?PC_7_RJH9U5230GE3E02LECFTDQCEK3_nid=GSHRZTXMBNbeGSGRCGLTDBgl

Lubricate any place where a pad comes in contact with a carrier or caliper
(but obviously not the friction face).

Guaranteed fix.

Mark Rosenkrantz

On Sat, Apr 19, 2008 at 10:07 PM, <kf21857 at comcast.net> wrote:

> I have taken the pads out twice and sanded them to remove the glaze.  Once
> they warm up after a couple of miles and a few stops, the squeal comes right
> back.  Because of the locating pins, there is only one way the pads will go
> into the calipers so no question of things being assembled correctly.  I
> even tightened up the metal fingers that hold the pads in place, thinking
> that maybe one of the pads was chattering.  I did notice that the Bentley
> refers to removing protective foil from the backing plates and that the old
> pads seem to have the remains of some kind of black goop that apparently
> stuck them to the pistons.  The new pads didn't have this.  Could this be my
> problem?  Has anybody else encountered this?  I have done quite a few brake
> jobs on various Audis over the years and I am not a novice at this but this
> has me baffled.  Should I just bag it and try a different set of pads?
> thanks,
> Dave
>