Airk Brakes won't pressure up

[Terry Neal]

Thanks Jimmy for your experience/expertise on this. I will try this on
a stuck pressure regulator on my air system. Good info & I really
appreciate it.

Terry

Terry Neal
Bozeman, MT
82PT40 6V92TA
74FC34 6V53T



James Harvie wrote:

> 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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