Hesitation/Stumble -- Vacuum Leak @ Brake Booster/Master Cylinder

#11

It looks like you need Sealing Washer 171-611-089A which is the rubber
gasket (vacuum seal) between the Brake Master Cylinder and the Brake
Booster. double check with the dealer on this part number!

I don't have any new masters that come with seals like that. :-(

"dave AKA vwdoc1" <vwdoc1 (AT) ameritech (DOT) net> wrote

Quote:

lol
Yeah I remember that you asked about that. ;-)
I will send myself some email so hopefully I won't forget while at the
garage. <g

IIRC (If I Recall Correctly) it is not a perfectly round O-ring and it
looks like a circular triangular seal.

"jfruniontown" <rothring (AT) peoplepc (DOT) com> wrote in message
news:1161203553.057451.240670 (AT) m7g2000cwm (DOT) googlegroups.com...
I hate to get off subject, for as you know my quest is to ascertain the
size of the "vacuum seal o-ring" for a westmoreland (U.S. built '81
Rabbit) but I will say i do not like to type, & i am normally not
verbose. You are right I should have put '81 Rabbit, FI, A/C, 4Speed in
the title, but being a long time reader and a first time poster, i am
not adept at the many acronyms used in the forum. I had to look up BTW
to find out what that stood for. The word Rabbit attracts aficionados
(habitués) to forums and threads, and obviously that is what i was
trying to do, attract a knowledgeable person

#12

i have a daughter who is working on her masters at Indiana Univ in
Bloomington, and she is my parts chaser, (she also drives the 1983
Rabbit) I will send my grad student to the VW dealer with the info.
Thank you very much for your assistance.

#13

http://tech.bentleypublishers.com/th...26241&tstart=0

At the above site I have attached a jpg (entitled vacuungasket.jpg) of
three vacuum gaskets, called on the packaging a "washer". As one can
see what Bentley calls a vacuum o-ring seal, is called a washer by VW,
and it flat with an inner diameter of 35mm, an outer of 41mm, a
thickness of 2mm (meaning deep) and a width of the face of the washer
of 3mm, ergo an inner of 35, outer of 41. It is flat soft rubber with
adhesive on one side, although i am not sure if the adhesive side goes
on the master cylinder or on the booster. If anyone knows please let me
(and the World know).
The part number is 171-611-089-A, which is the same part number
specified by a "dave AKA vwdoc1", above, who obviously knows what he is
talking about.
If i kwew how to post the photo here i would.

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Hesitation/Stumble -- Vacuum Leak @ Brake Booster/Master Cylinder

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Re: Hesitation/Stumble -- Vacuum Leak @ Brake Booster/Master Cylinder '81 Rabbit - 10-19-2006 , 05:19 PM

Re: Hesitation/Stumble -- Vacuum Leak @ Brake Booster/Master Cylinder '81 Rabbit - 11-03-2006 , 09:40 PM