I think you're right and that is exactly the reason I pulled the servo;
fluid emptying from the reservoir into the cannister. The seal between the
hydraulic and vacuum sections is bad and is letting fluid into the vacuum
section, which is getting sucked into the engine through the vacuum hose and
burned through the exhaust. Lots of white smoke for a few minutes and brake
fluid smell. Thanks to the list for identifying the problem a few months
back.
----- Original Message -----
From: "Bob Spidell" <bspidell@comcast.net>
To: "Frank Magnusson" <fmags@cox.net>
Cc: <healeys@autox.team.net>
Sent: Saturday, September 13, 2008 2:39 PM
Subject: Re: [Healeys] Brake servo repair - Pt. 2 (redux)
> On further thought regarding (my words):
>
> "Ironically, if you could get to the bolts attaching the canister to the
> body without opening the canister you probably wouldn't need to open the
> vacuum canister at all; I think the rubber diaphragm should last a long
> time and there's nothing you can do to service or replace it anyway (this
> type doesn't need the dry lube on the inside of the canister as the
> perimeter of the diaphragm is pinched to between the two halves of the
> canister). "
>
>
>
> I think this is not entirely correct; what often fails on these servos is
> the "gland seal" which seals around the conrod from the vacuum piston to
> the M/C piston. They either wear so they don't seal properly or get
> brittle and crack from age and non-use; either way this allows brake fluid
> into the vacuum canister which can find its way into the intake manifold.
> If I recall correctly, you have to "break" the vacuum canister from the
> servo body to get at this seal.
>
>
>
> bs
>
>
>
> *******************************************************************
> Bob Spidell San Jose, CA bspidell@comcast.net
> *******************************************************************
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://www.team.net/archive
|