[s-cars] RE: S-CAR-List Digest, Vol 19, Issue 60

[Peter Schulz]

Paul:

Lucas instructions are HERE:
http://www.20v.org/brakere.htm

The parking brake mechanism (PBM) seal can be replaced with: NAPA part 
number 6405:
http://www.napaonline.com/cgi-bin/ncommerce3/ExecMacro/NAPAonline/search_results_part_num.d2w/report?Search_Part=NO&ic_exact=YES&part_number=CR%2016X24X7

NAPA's price is $2.99 USD per seal.

It's a transmission seal in the same style as the crank seal on the audi 
engines and is a perfect fit to the Caliper body and PBM.

The most challenging task in overhauling the brake caliper is to compress 
the piston spring so that you can remove the circlip retaining the cage 
around the spring - during removal and reinstallation - the caliper piston 
spring must be removed so that you can extract the PBM from the caliper body.


HTH

-Peter




At 09:37 AM 5/18/2005, Paul Heneghan wrote:
>Four things can do this:
>- sticking slide pins on callipers
>- sticking pads in carriers
>- sticking Parking Brake Mechanism (PBM) in callipers
>- sticking handbrake cable
>
>I'm assuming they're the same as the old 4kq and 100q in which case
>there's some good stuff on the following sites:
>
>http://members.aol.com/c1j1miller/brake.html (Chris Miller/Peter Schulz)
>http://www.s-cars.org/postnuke/print.php?sid=149 (Fred Munro)
>
>If those methods don't work, you can try dismantling the PBM like I did:
>http://www.heneghan.e7even.com/audi/parkingbrake.html
>
>Somewhere on the internet, there's a pdf of a Lucas instruction sheet
>that comes with a seal kit - I can't remember where I came across it
>though.  A pity, because it is one of the few official documents that
>deals with the PBM.

1991 200 20v Q Avant Titan Grey
1991 200 20v Q Avant Indigo Mica
1991 90 20v Q Red
1990 CQ silver (awaiting S2 engine transplant)

Chelmsford Ma, USA