Air leak

[Gardner Yeaw]

Stephen,

You are correct, there is a pump behind the screen, however, it
is in a state of partial disassembly and has been disconnected. Back
to the drawing board.It is possable the air operated vacuume
generator was retro-fitted, or I just have a missing connection.
Looks like a little more digging is in order.

Thanks,
Gardner
78FC33

--- In WanderlodgeForum@yahoogroups.com, "Stephen Birtles"
wrote:
>
> Gardner
> is there a small screenned in portion inthe front bin if there is
> look behind that It took me 2 years before I found mine just never
> paid attention to the screened in box
> Stephen 77fc35
>
> --- In WanderlodgeForum@yahoogroups.com, "Gardner Yeaw"
> wrote:
> >
> > Jeff,
> > I don't believe I have a pump, at least I have never heard it
run
> > and there is nothing in the compartment. I will study the
diagrams
> > and such and begin looking for the vacuume lines and cruise
control
> > components. In the meantime I will seal up the leak and skip the
> > cruise control.
> >
> > Gardner
> > 78FC33
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Jeff Miller"

> > wrote:
> > >
> > > If your '78 has a mechanical (Ghast) vacuum pump in the back
of the
> > > compartment under the co-pilot's seat, this is not an
> > > aspirator/vacuum-generator. If it is, look for vacuum leaks in
the
> > > cruise control as others have mentioned.
> > >
> > > - Jeff Miller
> > > in Holland, MI
> > >
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "Gardner Yeaw"

> > > wrote:
> > > >
> > > > I have an air leak in the front of my 78FC33. Lying on the
ground
> > > > and reaching up in the left front there is what looks like a
> > > > distribution valve. It has at least two thin black hoses
attached
> > > > with screw on caps. When I shut off the coach it leaks for a
few
> > > > minutes then stops. The brake tanks keep about 75 lbs of
> > preasure,
> > > > but the step stops working.
> > > >
> > > > There is a tube that is designed to have a rubber hose
sliped
> > over
> > > > it on one side of the valve, I can't see it, but that is
where
> > the
> > > > air is leaking from, It seemed odd that there would be a
slip on
> > > > connection when all the others are the standard black tube
with a
> > > > screw on connector.
> > > >
> > > > Does anyone have any idea what this valve may be for? I
had
> > read
> > > > that the cruise control used air passing over a venturi to
> > generate
> > > > vacuume, could this be it?
> > > >
> > > > Thanks
> > > > Gardner
> > > > 78FC33
> > > >
> > >
> >
>