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Re: Potential Brake Failure Warning - looking for bpw switch

To: "Dodd, Kelvin" <doddk@mossmotors.com>, <Healeys@autox.team.net>
Subject: Re: Potential Brake Failure Warning - looking for bpw switch
From: "Hans Duinhoven" <h.duinhoven@planet.nl>
Date: Wed, 27 Nov 2002 21:17:54 +0100
Kelvin,

This rang me a bell.
>From the start of the brake system restoration I'm looking for a new brake
pressure warning switch.
The electrical part only will do.
Many local MG parts dealers tell me it's nla.
Any idea how I can get one?

Thanks,

Hans

'71 February BGT (USA spec)


----- Original Message -----
From: "Dodd, Kelvin" <doddk@mossmotors.com>
To: <Healeys@autox.team.net>
Cc: <BritishCars@autox.team.net>; <MGs@autox.team.net>;
<Triumphs@autox.team.net>
Sent: Wednesday, November 27, 2002 1:07 AM
Subject: FW: Potential Brake Failure Warning


> Scott:
>
> The picture on your web site is of an oil pressure switch, not a brake
light
> switch.
>
> The switch pictured appears to be the three prong type normally used on
> later TR6 and TR7 for control of the anti-run on valve.  GPS113
>
> The correct brake light switch should have only two contacts.  So far as
I'm
> aware the brake light switches normally supplied by Intermotor, etc have
> proved to be very dependable.  (thankfully)
>
>
> I think this may explain your problem, as the hydraulic brake system
creates
> far higher pressure than the oil pressure switch would be designed to
> handle.
>
>
> regards
>
> Kelvin Dodd
>
>
> > -----Original Message-----
> > From: Scott H. [mailto:austrheamgafun@arczip.com]
> > Sent: Tuesday, November 26, 2002 3:39 PM
> > To: Healeys@autox.team.net
> > Cc: BritishCars@autox.team.net; MGs@autox.team.net;
> > Triumphs@autox.team.net
> > Subject: Potential Brake Failure Warning
> >
> >
> > Hello everyone,
> >
> > This is a warning to anyone who may possibly have the same
> > type of hydraulic
> > brake light switch on their car as I "had" on mine.  I don't
> > recall right off
> > hand which of the vendors I purchased this switch from, nor
> > does the sensor
> > have a manufacturer's name on it, but I will eventually
> > figure out who the
> > unique mold symbol belongs to.  I am only interested in
> > warning them of the
> > potential safety problem.  It could save a life.
> >
> > I am in the process of restoring an Austin Healey.  I have
> > purchased a lot of
> > very good quality new components for this car, but
> > unfortunately one of them
> > appears to be defective.  The other day while bleeding my
> > brake system, I was
> > pressing on the brake pedal while my son was at the bleed
> > screw to allow the
> > air to be forced out of the new brake lines.  During the
> > process of pumping
> > the brake pedal, I was able to build up fluid pressure, but
> > then all of a
> > sudden the pedal went to the floor and I immediately heard
> > fluid pouring onto
> > my garage floor.  After tracing the origins of the leak, I
> > found brake fluid
> > dribbling from the brand new brake light switch that I had
> > installed.  From
> > the body of the unit, not the threaded portion. Fortunately
> > my car is sitting
> > in the garage on jack stands, but if I were braking for, God
> > knows who or
> > what, I might not be sitting here typing this letter.
> >
> > Anyway, you can view the switch on the web site I have
> > constructed for this
> > purpose (see below).  Please take a look at the images and
> > make sure you don't
> > have the same switch on your car.  If so, the rest is up to
> > you.  Since these
> > switches are used for many different models, please feel free
> > to FWD this
> > message to anyone else who may benefit.  Meanwhile, if anyone
> > knows of a
> > well-known quality brake switch that I could buy, please let me know.
> >
> > Thanks,
> >
> > Scott Helms
> > http://users.arczip.com/zntech/switch.html

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