[Vwdiesel] bad brakes on 2001 Jetta

[lbaird119 at aol.com]

  I had a new one fail but that was because the other tech, at the dealer, wanted me to MASH it to the floor, first thing (basically dry).  I never mash, rarely pump up and generally push a bit further than normal operation but do use a faster movement.  Haynes book said to push faster in order to push any bubbles past any high spots that may happen.
    Loren



-----Original Message-----
From: Brian and Ruth Decker <decker at toledotel.com>
To: vwdiesel <vwdiesel at vwfans.com>
Sent: Sun, Jul 7, 2013 11:23 am
Subject: Re: [Vwdiesel] bad brakes on 2001 Jetta


Hi Andrew;
Your experience is way different than mine. I have been into Dead
abbit Rescue for about 20 years. Before I learned to pressure bleed about 4
r 5 years ago I think I had to replace a master cylinder at least one in
our times I used the pump it up and hold it to the floor method to bleed
rakes. We are not talking about catastrophic failure just the fact that
hen you are done with the job the master cylinder would slowly bleed down
s you were applying the brakes.
rian Decker
-----Original Message-----
rom: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
ehalf Of Andrew .Libby
ent: Sunday, July 07, 2013 11:00 AM
o: Kneale Brownson
c: vwdiesel at vwfans.com
ubject: Re: [Vwdiesel] bad brakes on 2001 Jetta
While that is feasible, it's not at all likely, IMO.  Over the last 20+
ears I have bled numerous brake systems and hydraulic clutch systems by
tomping the pedal to the floor and never, not once, had it damage the
aster cylinder.  If that ever were to happen I would count myself lucky as
'd sure rather have the master fail when bleeding the brakes than to have
t do so on a panic stop.

n Sun, Jul 7, 2013 at 10:51 AM, Kneale Brownson
knealeski at sbcglobal.net>wrote:
> The problem with pushing the brake pedal to bleed the system is you 
 can get the piston to travel farther in the master cylinder than 
 usual, so the seal can encounter debris accumulated there and hardened 
 so it can tear the seal.

 Sent from my iPhone


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