Rear Calibers addendum

[Kneale Brownson]

The stronger spring doesn't stop the corrosion, just helps the lever return to rest position until the rust gets bad enough to overcome its strength too.  It may even contribute to further deformation of the seal around the lever.

mike <mikemk40 at yahoo.com> wrote:  And I think there is a stronger spring which might help. As I recall it’s a Ford part


--- On Wed, 11/6/08, Kneale Brownson wrote:

> From: Kneale Brownson 
> Subject: Re: Rear Calibers addendum
> To: "Kneale Brownson" , "Max Hoepli" , Urq at audifans.com, audi_owners_usa at yahoogroups.com, quattro at audifans.com, w-t_audifans at yahoogroups.com
> Date: Wednesday, 11 June, 2008, 1:23 AM
> There's a bit more information about rebuilding to go
> with those pix at 
> http://www.20v.org/brakprob.htm#handbrake
> 
> Kneale Brownson wrote: The
> parking brake activation fails to release because the
> chamber in which the parking brake lever resides gets
> corroded up with rust.
> 
> If you look at the drawing at http://20v.org/brakere.htm
> the item that gets rusty and binds is #13. Scroll down to
> near the bottom of the page and you'll see an example
> of a rusty one.
> 
> Only way to fix this completely is to take the caliper
> apart, clean out the rust, relubricate with a caliper
> lubricant and reassemble. If you can get the lever to
> release and then never apply the parking brake again, the
> rears won't seize up any more. Some folks have reported
> temporary relief from the seizing while still using the
> parking brake by pulling the lever as far out of its
> chamber as possible (like an 1/8th inch), cleaning off the
> rust and applying lots of something like Kroil or PB
> Blaster. I found that process very temporary. The only VAG
> product in my yard (which includes four Audis) that I use
> the parking brake on regularly is the VW diesel, which has
> drum rears.
> 
> 
> 
> Max Hoepli wrote:
> Hi all,
> 
> Only my rear left caliber seizes after the handbrake has
> been set for a long
> time.
> 
> Will the rear left seize if I apply the hydraulic brake
> hard and/or for a
> longer time?
> 
> Patient: 1986 Type 44 Turbo Quattro
> Max
> 
> 
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