Date:         Sat, 27 Mar 2010 14:26:38 -0700
Reply-To:     Shawn Wright <vwdiesels@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Shawn Wright <vwdiesels@GMAIL.COM>
Subject:      Re: Brake Proportioning Valve: Traps Air?
Comments: To: neil n <musomuso@gmail.com>
In-Reply-To:  <c4e7c5f91003271204p535fdbe2qbd2771559e445362@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

My old '82 didn't have a bleeder at the valve, but you're right about the
rusted up part - I ended up replaced both solid lines when I decided to
replace the flex lines at each rear wheel, and couldn't get them apart
without damaging the steel lines. There was a lot of swearing when I had to
remove the inner ends of those steel lines at the valve, and there was no
way they were coming off without damage! The is a job best done next time
you have the tranny out - it's tight in there...

On Sat, Mar 27, 2010 at 12:04 PM, neil n <musomuso@gmail.com> wrote:

> Hi all.
>
> Searched but didn't find an answer.
>
> My '81 Vanagon proportioning valve:  http://tinyurl.com/y8q7e3x  is
> similar or the same as those used on later T2's. My T2 Haynes says
> that some MY's (pre '73?) have a bleeder screw. (there's a nice
> drawing on P 130)
>
> I understand the valve design changed within the T2's, and again in
> the T3's, but reading of this bleeder screw made me curious.
>
> Are the older T3 proportioning valves prone to trapping air bubbles
> when hydraulic system opened/serviced? If so, is there any use in
> bleeding valve at the connection(s)?
>
> Likely not I bet. And possibly risky since nut and line might be
> "welded" to valve with rust. Something a shade tree might want to
> leave alone til' line replacement required.
>
> Neil.
>
> --
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
>
> http://tubaneil.googlepages.com/
>
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>