'81 FC air leak

[doug_ngl]

Howdy Crew,
Well, I got the Bird moved into its garage for the winter and when I
parked it, there was a sizeable air leak (noise) coming from the front
end. Upon investagation, I found the leak coming from whats looks like
a small vaccum solenoid that appears to be on the end of an air
manifold. It is on the drivers side, pretty much inside and just above
the step hole in the bumper. I think the manifold distributes air to
the suspension. The air is leaking out of a small (1/8") tube coming
out of the bottom of this gizmo. Any ideas? It's cold here and I
suppose an ice crystal could be in there, but what is this thing, what
does it do, why is it leaking air? What is the meaning of life. Any
and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB

[putneyflash@...>]

I am thinking it might be the cruise control. Does the cruise work? My vacuum
unit set right behind the foot step of the bumper. I recently bought a new
vacuum unit from john blakey Motors but have not installed it as of yet. you can
take it off start the bird and see if it doesn't start leaking air at about 75
pounds. if you plug it it will go to regular pressure

re brake 1983 fc-35 sb " sagecoach"
>
> From: "doug_ngl"
> Date: 2006/11/27 Mon PM 08:55:00 EST
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] '81 FC air leak
>
> Howdy Crew,
> Well, I got the Bird moved into its garage for the winter and when I
> parked it, there was a sizeable air leak (noise) coming from the front
> end. Upon investagation, I found the leak coming from whats looks like
> a small vaccum solenoid that appears to be on the end of an air
> manifold. It is on the drivers side, pretty much inside and just above
> the step hole in the bumper. I think the manifold distributes air to
> the suspension. The air is leaking out of a small (1/8") tube coming
> out of the bottom of this gizmo. Any ideas? It's cold here and I
> suppose an ice crystal could be in there, but what is this thing, what
> does it do, why is it leaking air? What is the meaning of life. Any
> and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
>
>
>

[Gardner Yeaw]

Doug,
It may be the vacuum generator for the cruise control. They use
the flow of air past an oriface to generate vacuum. I was told that
if it continues to leak then there may be a leak in the cruise
control system.

Gardner
78FC33
--- In WanderlodgeForum@yahoogroups.com, "doug_ngl"
wrote:
>
> Howdy Crew,
> Well, I got the Bird moved into its garage for the winter and
when I
> parked it, there was a sizeable air leak (noise) coming from the
front
> end. Upon investagation, I found the leak coming from whats looks
like
> a small vaccum solenoid that appears to be on the end of an air
> manifold. It is on the drivers side, pretty much inside and just
above
> the step hole in the bumper. I think the manifold distributes air
to
> the suspension. The air is leaking out of a small (1/8") tube
coming
> out of the bottom of this gizmo. Any ideas? It's cold here and I
> suppose an ice crystal could be in there, but what is this thing,
what
> does it do, why is it leaking air? What is the meaning of life.
Any
> and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
>

[Stephen H]

Doug,

Mine does the same thing. I have an 81 as well. It's normal from what I read
on here.



There has been much talk about that noise on these forums recently--Kerry
will probably chime in.. I believe he took his vacuum generator out and
replaced the cruise control with another system. I am going to try to get
mine working here soon, by replacing all my vacuum lines going to and from
it.



Stephen H

81 FC-33SB

Plant City, FL



_____

From: WanderlodgeForum@yahoogroups.com
[mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Gardner Yeaw
Sent: Monday, November 27, 2006 9:43 PM
To: WanderlodgeForum@yahoogroups.com
Subject: [WanderlodgeForum] Re: '81 FC air leak



Doug,
It may be the vacuum generator for the cruise control. They use
the flow of air past an oriface to generate vacuum. I was told that
if it continues to leak then there may be a leak in the cruise
control system.

Gardner
78FC33
--- In WanderlodgeForum@
yahoogroups.com, "doug_ngl"
wrote:
>
> Howdy Crew,
> Well, I got the Bird moved into its garage for the winter and
when I
> parked it, there was a sizeable air leak (noise) coming from the
front
> end. Upon investagation, I found the leak coming from whats looks
like
> a small vaccum solenoid that appears to be on the end of an air
> manifold. It is on the drivers side, pretty much inside and just
above
> the step hole in the bumper. I think the manifold distributes air
to
> the suspension. The air is leaking out of a small (1/8") tube
coming
> out of the bottom of this gizmo. Any ideas? It's cold here and I
> suppose an ice crystal could be in there, but what is this thing,
what
> does it do, why is it leaking air? What is the meaning of life.
Any
> and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
>





[Non-text portions of this message have been removed]

[davidkerryedwards]

Yep, it's the vacuum generator. You've been messing with the cruise control
haven't you!!
If there's a leak in the cruise control system, it will cause the generator to
bleed off. It also
could be bad vacuum generator. They are NO LONGER AVAILABLE. Plug the main
line
coming out of generator and see if the leak stops. If it does, there's a leak
somewhere up
in the cruise control system.

kerry
82
fc 35
Denver

--- In WanderlodgeForum@yahoogroups.com, "Gardner Yeaw" wrote:
>
> Doug,
> It may be the vacuum generator for the cruise control. They use
> the flow of air past an oriface to generate vacuum. I was told that
> if it continues to leak then there may be a leak in the cruise
> control system.
>
> Gardner
> 78FC33
> --- In WanderlodgeForum@yahoogroups.com, "doug_ngl"
> wrote:
> >
> > Howdy Crew,
> > Well, I got the Bird moved into its garage for the winter and
> when I
> > parked it, there was a sizeable air leak (noise) coming from the
> front
> > end. Upon investagation, I found the leak coming from whats looks
> like
> > a small vaccum solenoid that appears to be on the end of an air
> > manifold. It is on the drivers side, pretty much inside and just
> above
> > the step hole in the bumper. I think the manifold distributes air
> to
> > the suspension. The air is leaking out of a small (1/8") tube
> coming
> > out of the bottom of this gizmo. Any ideas? It's cold here and I
> > suppose an ice crystal could be in there, but what is this thing,
> what
> > does it do, why is it leaking air? What is the meaning of life.
> Any
> > and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
> >
>

[davidkerryedwards]

Are you saying you found a replacement vacuum generator? If so, can you give me
the
phone number or website for the source. Everyone I checked with said they are
no longer
available and I'm about to install an electric cruise.

Kerry
82 FC 35
Denver

--- In WanderlodgeForum@yahoogroups.com, wrote:
>
> I am thinking it might be the cruise control. Does the cruise work? My vacuum
unit set
right behind the foot step of the bumper. I recently bought a new vacuum unit
from john
blakey Motors but have not installed it as of yet. you can take it off start the
bird and see if
it doesn't start leaking air at about 75 pounds. if you plug it it will go to
regular pressure
>
> re brake 1983 fc-35 sb " sagecoach"
> >
> > From: "doug_ngl"
> > Date: 2006/11/27 Mon PM 08:55:00 EST
> > To: WanderlodgeForum@yahoogroups.com
> > Subject: [WanderlodgeForum] '81 FC air leak
> >
> > Howdy Crew,
> > Well, I got the Bird moved into its garage for the winter and when I
> > parked it, there was a sizeable air leak (noise) coming from the front
> > end. Upon investagation, I found the leak coming from whats looks like
> > a small vaccum solenoid that appears to be on the end of an air
> > manifold. It is on the drivers side, pretty much inside and just above
> > the step hole in the bumper. I think the manifold distributes air to
> > the suspension. The air is leaking out of a small (1/8") tube coming
> > out of the bottom of this gizmo. Any ideas? It's cold here and I
> > suppose an ice crystal could be in there, but what is this thing, what
> > does it do, why is it leaking air? What is the meaning of life. Any
> > and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
> >
> >
> >
>

[putneyflash@...>]

I think you can get a replacement vacuum from john bleckly motors in macon. i
will get the name and number of the contact and send on.

re brake "sagecoach"
>
> From: "davidkerryedwards"
> Date: 2006/11/27 Mon PM 10:37:45 EST
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: '81 FC air leak
>
> Yep, it's the vacuum generator. You've been messing with the cruise control
haven't you!!
> If there's a leak in the cruise control system, it will cause the generator to
bleed off. It also
> could be bad vacuum generator. They are NO LONGER AVAILABLE. Plug the main
line
> coming out of generator and see if the leak stops. If it does, there's a leak
somewhere up
> in the cruise control system.
>
> kerry
> 82
> fc 35
> Denver
>
> --- In WanderlodgeForum@yahoogroups.com, "Gardner Yeaw" wrote:
> >
> > Doug,
> > It may be the vacuum generator for the cruise control. They use
> > the flow of air past an oriface to generate vacuum. I was told that
> > if it continues to leak then there may be a leak in the cruise
> > control system.
> >
> > Gardner
> > 78FC33
> > --- In WanderlodgeForum@yahoogroups.com, "doug_ngl"
> > wrote:
> > >
> > > Howdy Crew,
> > > Well, I got the Bird moved into its garage for the winter and
> > when I
> > > parked it, there was a sizeable air leak (noise) coming from the
> > front
> > > end. Upon investagation, I found the leak coming from whats looks
> > like
> > > a small vaccum solenoid that appears to be on the end of an air
> > > manifold. It is on the drivers side, pretty much inside and just
> > above
> > > the step hole in the bumper. I think the manifold distributes air
> > to
> > > the suspension. The air is leaking out of a small (1/8") tube
> > coming
> > > out of the bottom of this gizmo. Any ideas? It's cold here and I
> > > suppose an ice crystal could be in there, but what is this thing,
> > what
> > > does it do, why is it leaking air? What is the meaning of life.
> > Any
> > > and all input is appreciated. Doug Engel, Gunison,CO 1981 FC35SB
> > >
> >
>
>
>
>