[V6-12v] Loss of Braking power on 100CSQ Avant

[Elliott Potter]

David Torrey wrote:
> 
> Hi All -
> 
> Thanks to all who replied, (Todd Young, Elliott Potter,Tony Lum and Andrew
> Lundy).  The Bentley manual is such a joy to read.  I don't think the 100
> has the accumulator either.  The Bentley makes the transition from the 100,
> A6 to the S6 with such clarity.  In looking at it again, I think only the S6
> has the accumulator.  There is also a pressure regulator attached to the
> body near the rear brake caliper.  It has an arm with a spring attached and
> it must move when the brakes are applied,  according to the Bentley.  It is
> not clear to me if the 100 has this or not.  I'll just have to look.
 
It sounds like you're describing the rear brake proportioning valve,
which is attached to the rear axle on FWD models, but is a flat shiny
box in front of the ABS computer on quattro models.  So odds are that
you don't have that one (too bad!  It's an easy one to check).
--
Elliott