Airk Brakes won't pressure up

[Gardner Yeaw]

I has a similar experience on my '78 after I drained the brake
tanks to install new lanyard bleed valves. The brakes wouldn't come
up to presure. I waited a while and restarted the engine and it
worked! I bled them down and the same thing happened again. I ended
up putting a new regulator on the compressor. This year I started it
up after sitting for the winter and everything worked fine.

Gardner
78FC33

--- In WanderlodgeForum@yahoogroups.com, "one_dusty_hoot"
wrote:
>
> 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
> > >
> >
>