Airk Brakes won't pressure up

[one_dusty_hoot]

John,
I am inclined to agree with David. When checking
the air ride I came across some in-line regulators
that close when the pressure drops to 60-65#. They
are about 2" long in series with the air piping to
systems. Their purpose is to limit air to auxillary
sytems so that you will always have brakes. Since
you don't have air ride, I would look at all the
places air is used, don't leave out the steps and
cruise control. If you can't hear air escaping over
the noise of the engine you might try connecting air
from a shop compressor. It could even be the governor
on the compressor, it could be anywhere except the
brake system. Whatever the problem it should be tracked
down now rather than have a failure on the road.
bob janes, 87fc35, greenville, sc

--- In WanderlodgeForum@yahoogroups.com, "dthollis1961"
wrote:
>
> John,
>
> There is a safety valve in the system that doesn't allow air to
flow
> to the accessories until there is about 60 psi on the system.
Since
> your getting to 60, I'd check the step, air horn and air chuck in
> side compartment. When I bought my '78, it wouldn't go above 60
> till I whacked the air chuck that was spewing air. My '78 didn't
> have an air dryer.
>
> David Hollis 84FC35 Springfield,IL
>
>
> --- In WanderlodgeForum@yahoogroups.com, "bluebirdfitz"
> wrote:
> >
> > I just started up my 1978 Wanderlodge FC31 bus after a long winter
> > hiatus. It started right up (in a sea of blue smoke), but the
air
> > brakes won't pressure up past sixty. The same thing happened last
> > year, but it seemed to fix itself when I went back out a week
> later.
> > The bus is old, but only has about 30,000 miles on it. Any ideas
> of
> > what I should be checking first.
> >
> > Thanks very much for any help.
> >
> > John Fitz
> > 78 Bluebird FC 31
> > Maynard, MA
> >
> > http:http://www.johnfitz.com
> >
>