[urq] Brake lines/proportioning valve hookup

[fdekat]

> ------------------------------
> 
> Message: 2
> Date: Fri, 03 Dec 2010 12:53:22 -0500
> From: "Ben Swann" <benswann at verizon.net>
> Subject: [urq] Brake lines/proportioning valve hookup
> To: <urq at audifans.com>,	<quattro at audifans.com>
> Cc: 'Ben Swann' <benswann at verizon.net>
> Message-ID: <2D8EC855704A4FE9A9058187958AD892 at swansong>
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> 
> To cut to the question - read the last line.
> As I'm looking at the existing hookup, I realize I don't understand how
> this works or is
> supposed to work.  I referred to ETKA diagram for clarification, but still
> confused.
> 
> It appears there is both front and rear connection from master cylinder to
> the original
> proportioning valve on opposite sides.  I'm not sure exactly what I'm
> looking at, but
> there seems to be a line from the front master cyl.  port as well as one
> from a rear
> port.  Both of these are going into the existing/original proportioning
> valve - one on
> each the two ports on the valve   



How the existing works:

Existin unit 'interupts' the rear circuit  (Goes *between* master and
calipers), so it can limit the rear line pressure. You'll want  your wildwood
to do the same.  (Be between master and calipers)

The existing unit uses the front circut 'signal' to know if the front circuit
had failed, so it would then know to give rear circuit full braking pressure
(but only under front failure condition).  Wildwood doesn't support this
function, so Wildwood shouldn't need to see front line pressure.

(Except that your unit has 5 ports, so you should see the Wildwood
documentation to see *exactly* how it's supposed to be setup)

Hope this helps?

=Frank=