Brake master cylinder

[PeterBergin at aol.com]

Hate to ask, but how much is a new one.  I bought one from a local  auto 
parts store 12 years ago for an old 5000 avant that preceded my 200 which  
preceded my S6.
 
I was only $75
 
Pete
 
 
In a message dated 12/1/2011 8:05:44 A.M. Central Standard Time,  
jkempf at madriver.com writes:

That has not been my experience with 20 year old seals. They  turn to hard 
plastic and stop working like a seal eventually. There are a few  Dorman 
part numbers for kits for different bore diameters for VWs of the same  
vintage. I just need a MC off the car. For me sourcing seals is not a problem.  I 
have been in the trenches in engineering for decades so I know how to  
measure and find the right seal even if I don't have a part number. So back to  
anyone got a dead one they would like to donate to the experiment? Boils down  
to two lip seals normally in Nitrile Rubber for DOT 3/4. 
 


jfk


-------------------------
Jay  Kempf
jkempf at madriver.com
802 272 5868  


 
____________________________________
 From: Tony Hoffman [mailto:auditony at gmail.com]  
Sent: Thursday, December 01, 2011 8:25 AM
To:  jkempf at madriver.com
Cc: PeterBergin at aol.com; b.benz at charter.net;  200q20v at audifans.com
Subject: Re: Brake master  cylinder



Jay,
 
I'm one that agrees with Bernie on this. Take it apart and clean  
everything, inspect closely. If the rubber is not torn, no reason to replace  it. It 
will seal well, not intermittently. If you can get a rebuild kit, by  all 
means replace everything if you wish. However, they are not available for  any 
of these older Audi's that I'm aware of, and therefore a real PITA to  
source each little piece. So, I jsut dissassemble, clean out all the gunk  
(which is what is giving you problems IME) and reassemble. 
 
Tony




Jay, DFWAB!
Your MC is probably OK if the pedal does  not go to the floor, however
slowly.
And one does not need rebuild kits  for MC or calipers unless a boot is torn
and needs replacement.
Just  clean the parts well and  reassemble.