[Mgs] Brake pressure balance switch

Simon Matthews simon.d.matthews at gmail.com
Thu Jun 7 10:23:51 MDT 2018


Aren't the brakes split diagonally, not front/rear?

On Tue, Jun 5, 2018, 12:45 AM PaulHunt73 <paulhunt73 at virginmedia.com> wrote:

> Possibly, but you can't discount the brakes.  If it's the rear circuit
> that
> has the problem then it would barely be noticeable in driving.
>
> Firstly disconnect the wiring from the switch and if the warning light
> goes
> out it is a brake or switch problem, and not wiring.  If it stays on it's
> wiring, although from 76 on the same warning lamp also comes on with the
> handbrake.
>
> If it is brake or switch pre 76 to centralise the switch you have to open
> the good circuit and operate the brakes slowly to move the shuttle valve
> across until the light goes out, and if you keep pressing it will come
> back
> on again when the shuttle valve has moved to the other side.  However if
> the
> light stays on all the time you still don't really know if it is a switch
> or
> brake problem, except that if it is the brakes you should be losing fluid
> from somewhere.
>
> 77 and later you can partially unscrew the switch and it should
> recentralise
> automatically i.e. the light goes out.  If it doesn't go out then it's
> probably the switch.
>
> PaulH.
>
> ----- Original Message -----
>
> > My daughter's MGB is showing the brake pressure balance switch on all
> > the time. Is it likely that the switch is broken and not a real
> > problem with the brakes?
> >
>
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