RE: Behavior of failing bomb?

[Aleksander Mierzwa <alex@matrix.com.pl>]

When the bomb fails, it is rarely an intermittent problem. You are right
about suspecting the brake servo. To test it remove the return line (the
one between the servo and the reservoir). Only few drops should escape
from the servo. If the fluid escapes in constant flow, the servo is
faulty and should be renewed.

Aleksander Mierzwa
Warsaw, Poland
mailto:alex@matrix.com.pl
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)

> -----Original Message-----
> From:	JIM_WARREN@HP-FtCollins-om4.om.hp.com
> [SMTP:JIM_WARREN@HP-FtCollins-om4.om.hp.com]
> Sent:	Wednesday, September 17, 1997 5:02 PM
> To:	quattro@coimbra.ans.net
> Subject:	Behavior of failing bomb?
> 
> Item Subject: cc:Mail Text
>      
>      Can anyone confirm the behavior of a failing bomb?  Sometimes my
> bomb 
>      passes the "pump the brakes test" fine after sitting overnight.
> (I 
>      can get 35-39 pumps out of it before I loose pressure.)  On other
> 
>      mornings I have no brake boost at all.  Is this intermittent
> behavior 
>      typical of a failing bomb?  Is there anything else that could be 
>      broken (like the booster unit behind master cylinder, or should I
> just 
>      buy a new bomb and replace it myself.  I hate to spend the money
> on a 
>      new bomb and not solve the problem.
>      
>      Jim Warren