[s-cars] Re: S-CAR-List digest, Vol 1 #1639 - 14 msgs

[Peter Schulz]

At 11:41 AM 7/15/2003 -0400, Bill Mahoney wrote:
>Message: 14
>From: "" <wmahoney at disk.com>
>To: "'Scar'" <s-car-list at audifans.com>
>Date: Tue, 15 Jul 2003 10:37:23 -0500
>Subject: [s-cars] More on rear brakes
>
>Needing just a guide pin for a rear caliper carrier, I made inquiry to
>the stealer and I learned that a whole new caliper carrier is a cool
>$190, I sat down and thought and thought..  hmmm  didn't Jim Klein make
>me retrieve my old G60 front calipers from the trash just because??
>Took me forty minutes to find them and low and behold the guide pins
>look to be identical with the rear calipers.  Nice!  Nothing to buy.
>Thanks Jim!

Bill:
Pin guides and boots are available from Rod at TPC, the come in a Lucas/girling box.

>Also, while searching for an elusive guide pin, I came upon some S2
>sites and something I hadn't heard before was that a big contributor to
>the ebrake failure is weak release springs.   The answer to these weak
>springs is of course to Hapersize(tm) them.  Apparently a euro 1990 or
>so Ford Granada (not to be confused with the old US "BoxRide") has these
>hefty springs that will fit.

Bullocks ( to quote my S2 list brethren).
Problem is moisture getting through the seal and corroding the ebrake mechanism shaft.
A stronger spring will not prevent the corrosion from occurring.
It may prolong the operation of the caliper before it either needs to be rebuilt or replaced, however.

Rebuilt rear calipers can be bought from suppliers for less than $150 each.  The jury is out on how well they have been rebuilt
( I needed to repack the ebrake mechanism on three year old calipers rebuilt by Morse (mounted on the Indigo wagon))

Its critical when rebuilding the calipers to completely disassemble the mechanism, clean, polish, regrease the ebrake bore with waterproof high temp brake grease, and if necessary, replace the shaft seal ( I posted a Chicago Rawhide part number 6405 (CR 16x24x7 HMS4 R) available from NAPA for $3...)

Having examined and rebuilt a number of these now, i think that Audi could have used a better quality seal and a better, waterproof grease to deter corrosion.

-Peter




>I couldn't find any euro Ford parts places, so how about it?  Can anyone
>pick up the ball and provide an idea of where to find these ebrake
>springs on steroids?  The part numbers are 6141147 and 6141148.
>Plan B would be to create a new spring or add to the existing springs.
>Engineers?
>Bueller?
>Cheers'
>Bill M
>95 1/2 Avant - very fast, no brakes (for the moment)

Peter Schulz
1990 CQ (awaiting S2 3b engine transplant)
1991 200 20v TQW indigo mica
1991 200 20v TQW titanium grey
Chelmsford, MA USA
peschulz at cisco.com