I had this problem with a PBR VH40 unit fitted to my car. Turned out to be a
split in a rubber boomerang shaped joiner on an external pipe joining both
sides of the diaphragm (typical new rubber !) which caused a vacuum leak. I
don't know what your unit is like but sounds like the same problem. Sounds
like you have a vacuum leak of some sort.
Do you hear a air-releasing sound when you depress the pedal. If not, that
is the problem
John Rowe
Qld Australia
BN1 BT7
-----Original Message-----
From: healeys-bounces@autox.team.net [mailto:healeys-bounces@autox.team.net]
On Behalf Of patrick williams
Sent: Sunday, 28 March 2010 9:57 PM
To: Alan Seigrist; Healeys@autox.team.net
Subject: Re: [Healeys] Brake booster won't release
My booster is brand new. The brand is Powertune which looks just like the
Lockheed unit. Lots of suppliers carry it now. If it's junk are there
alternatives? I saw on a Lotus list that someone ordered a Lockheed and got
a Powertune (Lockheed doesn't produce boosters anymore?).
On Sat, Mar 27, 2010 at 6:49 PM, Alan Seigrist <healey.nut@gmail.com> wrote:
> Oh wait - are you using an aftermarket unit, or the original Girling
> unit but rebuilt?
>
>
>
> On 3/28/10, 2x2doc@gmail.com <2x2doc@gmail.com> wrote:
> > I'm redoing the brakes on my 1959 BT7. I've replaced the brake lines and
> > added a Powertune brake booster. I bled the brakes using an Ezeebleed
> > system. The problem is that the booster won't release once I've applied
> the
> > brakes (it eventually releases but can take a couple of minutes) I've
> > mounted the booster just like the instructions say. The brakes work fine
> if
> > I disconnect the vacuum line (and plug the manifold). I've bled the
> brakes
> > numerous times and it always hangs up. Anyone have any ideas?
> > Pat Williams
> > _______________________________________________
>
> >
>
> --
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