2000 A6 2.7T brake squeal

[kf21857 at comcast.net]

Thanks, I'm sure my local NAPA will carry that.  I will give it a try.  I did notice some shiny places on the back of some of the backing plates so you are probably correct.
Dave
 -------------- Original message ----------------------
From: "Mark R" <speedracer.mark at gmail.com>
> 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/Pr
> oduct-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
> >