[urq] [s-cars] Rear Calipers

[Rich Assarabowski]

You need to use a brake retraction tool with two "pegs" that engage the slots in the piston, so you turn and push at the same time.   Your local AutoZone should be able to rent you their caliper tools, it's made by "OEM" (P/N 27111).  Use the appropriate disk that mates with the piston.
The hand brake cam should be well-lubricated, you can disassemble the spring and pull out the shaft and clean the rust before regreasing. 
-- Rich A.



----- Original Message ----
From: Rbade12 <rbade12 at aol.com>
To: Jack Walker <jack at walkerperformancegroup.com>; S-CAR-List at audifans.com; urq at audifans.com
Sent: Friday, September 5, 2008 10:42:35 AM
Subject: Re: [s-cars] Rear Calipers

I always have a heck of a time screwing pistons in, even with the "proper" tool. Was the tool mated to the piston well enough that it was turning it as pressure was applied? I've found that a well placed c-clamp and a big 'ol channel locks carefully applied to the piston works well. I assume the caliper is off the car, therefore the e-brake isn't engaged. 
Your experience could differ, but, I once bought a set of rebuilt calipers and a couple years later they started acting wacky, so, I took them apart, there was barely any grease on both e-brake mechanisms. and one piston was pretty badly pitted. Since I've been a rebuilder, the hardest part of which are the circlips that are inside the caliper. [I alterd a lock ring tool to reach inside]. Try turning the piston again, unless it's really corroded it'll turn.

Bob    91 200q20v



In a message dated 09/05/08 00:33:58 Central Daylight Time, jack at walkerperformancegroup.com writes:
But, I’ve tried to wind back the calipers with a wind back tool and it bent 
the metal rod that’s supposed to twist the piston as it is compressed and 
wound back into the caliper body. So I must be doing something wrong? I’ve 
got like 4 of the rear calipers as parts to mess around with and they all 
seem to have the same problem, so it’s got to be me! 
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