Thanks Alan, I'll investigate along those lines. So frustrating!!!
Hey Patrick,
I'll write you an article.
But My brake fluid dripping hands were not in the mood for a camera....
I can include a pic of my BJ8 stopped, which may infer the brakes were locked
on. I can also include a pic of the offending brake booster, which I didn't
assault with a large hammer, because I want to fix it.
Deal?
;-)
Best
Chris
On 23/05/2012, at 8:30 PM, "Patrick and Caroline Quinn" <p_cquinn@tpg.com.au>
wrote:
> G'day Christopher
>
> Yes had the same experience with a Mk2 Jaguar that used to be our everyday
> car. Yes it locked solid on Pennant Hills Road in the middle of peak hour.
I
> was later told that that the booster was the same as a BJ8. I didn't know
of
> course as you would realise I'm from the era when real Austin-Healeys
didn't
> have brake boosters. ;)
>
> Took it to a few so-called Jaguar experts, but most were just that -
> 'sperts'. In the end took it to Better Brakes in Parramatta who said that
it
> was a dooverhicky inside that wasn't letting the fluid return. I took that
> as technical talk for valve. Anyway first of all they actually found the
> booster in the car which is tucked away upside down and underneath the
right
> hand side innerguard and then rebuilt it.
>
> Worked like a charm after that.
>
> Now Christopher as you have experienced a spanner wielding moment with your
> Austin-Healey it seems to me that you should have taken photos of what you
> have done and we can prepare an article for Flat Clat. What say you?
>
> Hey guys,
> Ever had a BJ8 brake booster fail so it locks your brakes on?
> My brake booster (BJ8 std type) effectively pushed the pedal high, and
> locked
> all the brakes on. Solid
> Pushing hard on the pedal released the brakes, but next time you touched
> them,
> same thing. 4 wheels locked solid.
> This isn't a diagnosis question. I had replaced calipers, hoses, rebuilt
> wheel
> cylinders, rebuilt the brake master cyl, replaced the reseviour with a new
> one, and fitted a rebuilt BJ8 Booster. fitted new linings and shoes. And a
> New
> one way valve in the booster vacuum line.
> Thats when the problem started...
> So I re rebuilt master cylinder. Twice. Checked and double checked
everyting
> Checked the booster one way valve.
> Glimmer of hope was disconnecting the "new" booster. Problem vanished - but
> no
> booster.
> Today I put my old booster back on. Std BJ8, rebuilt 14 years ago. Brakes
> are
> now perfect again.
> This preventative maintenance has hairs all over it....
> So the question is.... What's wrong with my newly rebuilt BJ8 booster that
> it
> doesn't release the vacuum????
> Ideas?
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