Anthony,
that 1/8" clearance does two things.
It ensures that the switch does in fact release when you take your foort off
the pedal. You do not want to drive around with the rear brake lights
permanantly on.
Secondly, it ensures that there is a slight pedal movement before the lights
come on to allow for the free movement in the braking system that must be
taken up before the brakes begin to operate.
Guy
----- Original Message -----
From "Antony Gelberg" <antony at antgel.co.uk>
To: "Spridgets" <spridgets@autox.team.net>
Sent: Saturday, May 08, 2004 10:34 PM
Subject: Re: getting there
> On Sat, May 08, 2004 at 04:07:17PM -0500, David Lieb wrote:
> > > I have no idea what this means. I assume that I screw it in to the
point
> > > where the contact is being pressed in, but the pedal is still at the
top
> > > (hence not activating the brakes)?
> >
> > The idea is that the switch not prevent the mastercylinder piston from
> > freely returning to its proper position. If you screw the switch in too
far,
> > you can prevent the residual pressure in the brake lines from releasing
and
> > have to ask the list why your brakes are always on. Both Haynes and
Bentley
> > illustrate this adjustment in their manuals.
> > David Lieb
> >
>
> I gathered that - just didn't see how free play came into it. Logic
> suggests that there is a point at which the switch is pushed in, but the
> piston isn't moved. This would seem to be the optimum location. I have
> the Bentley manual, and the illustration of free play is clear as mud.
> Yes, 1/8" from the top of the pedal movement. Until what? What should
> or shouldn't happen in the first 1/8"? Perhaps I can't see the wood for
> the trees.
>
> A
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