Brake master cylinder

[Jay Kempf]

Yup,
 
Did the farthest first, right rear, left rear, right front, left front, then
around again about 4 times. Paranoid I am. I also with a helper checked
every caliper for proper operation. Does it clamp, does it release. Then we
started working on the emergency brake initial settings and tweaking. We are
going to do all that again but from what I can tell the calipers and
bleeding is correct. If fluid was bypassing at the ends of the system I
would see weeping somewhere. The master cylinder is the only place where
fluid can bypass internally as far as I know. 
 
I would still like to get another master cylinder and rebuild that away from
a working car. Any one got one? I'll share all the seal numbers and sources
when I get it figured out....
 



jfk


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

 

  _____  

From: PeterBergin at aol.com [mailto:PeterBergin at aol.com] 
Sent: Wednesday, November 30, 2011 7:20 PM
To: jkempf at madriver.com; b.benz at charter.net
Cc: 200q20v at audifans.com
Subject: Re: Brake master cylinder


When you bled the brakes did you follow the proper sequence?  I did it wrong
one time and did not get all the air out.  I think it was RR, LR, RF, LF.
Pete
 
In a message dated 11/30/2011 4:33:30 P.M. Central Standard Time,
jkempf at madriver.com writes:

Pedal is not reliable at this point. Sometimes it feels like it is dropping
slowly. Other times it feels solid. The distance to steady with moderate
pressure doesn't seem to be in the same place each time. You can pump it and
get it back. I will bleed it all again and continue to settle the hydrualics
but I am getting no hydrualic pressure faults on the dash and the booster
seems to be working fine so I am guessing that I am going to have to deal
with the master. I am not the type to clean and reassemble. I just blasted,
painted and completely rebuilt everything in the brakes and hydraulics
including lines, hoses, bomb, calipers, brake cables, yadda... Can't stop :)
The seals may swell back up and work but my experience tells me that once
they are dry and hard they are done. I have had much lesser mileage parts
and younger fail this way. The hydrualic servo and brake master are the only
things left other than clutch stuff that I haven't done. The clutch feels
old and a bit rattly but that is normal for high miles on these cars. It is
strong and working fine so I ain't bothering to mess with that. That isn't
going to cause a crash like a brake failure would. 

Got injectors off of ebay today, a whole set for cheap off of a 200 20v. 




jfk


-------------------------
Jay Kempf
jkempf at madriver.com
802 272 5868 
-----Original Message-----
From: Bernie Benz [mailto:b.benz at charter.net] 
Sent: Wednesday, November 30, 2011 3:31 PM
To: jkempf at madriver.com
Cc: 200q20v at audifans.com
Subject: Re: Brake master cylinder

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.

Bernie

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