Is the hissing coming from the base of master brake cylinder? You can
grab a piece of hose and lend an ear. There's an o-ring there, if
it's toast, it will leak. Might be worth wile first to check that o-
ring's integrity before you yank the whole booster. I would say it's
about a five hour job removing the dash, etc and putting it back
together, roughly. Then again I can be a bit of a spastic turtle at
times.

Matthias

On Jun 8, 2007, at 6:15 PM, Jonce Fancher wrote:

> Hi all
> Ive got to figure out the Hissing noise coming from my brake
> booster area when Im idling at a standstill and step hard on the
> brakes. Ive got 2 spare boosters but
> I think it maybe the hose connecting to the booster. I will check
> it but the Question is How long of a job is it to swap one out? Ive
> pulled a few out in the past
> when Gutting a vanagon or 2 but never careful of it suroundings.
> Thanks Jonce
>
> Jonce Fancher
>
> 56 Single Cab
> 66 Sunroof Bug
> 66 Variant Squareback
> 66 Porsche 912
> 71 Sunroof Bus
> 84 Vanagon "Gottfried"
> 85 Vanagon Westi
> 2003 10 Passenger Sprinter
>
> Fancher's Upholstery Inc. -  www.fanchers.com
> Not-A-VW Club- http://mywebpages.comcast.net/jaransont3/notavwclub/