Airk Brakes won't pressure up

[James Harvie]

I saw a simular post in here, a week or so ago, Someone had the same problem. I
don't think he posted his repair, but I think if I had a valve or two sticking,
I'd remove the air discharge hose from the compressor, (the one that goes from
the compressor, to supply the tank), and dump about a half of cup or so of
Alcohol, into the hose. then put hose back on start it up and pump the pedal.
Alcohol will eventually dry up the "O" rings, if you use it all of the time, but
it can also turn a long repair, into a short one. Sometimes a small piece of
debris, or sludge blocks the valve internally, and they get hung up, half way.
When you work for Brown, the name of the game is to get the vehicle rolling as
quick as possible, so it works for them. I saw a tractor trailer get towed in
once, because the driver lost the windshield wiper, on the passengers side, and
refused to drive it. Good luck.

Jimmy Harvie

82FC 35 SB

Boston Ma

Gardner Yeaw wrote:
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
> > >
> >
>






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