Help with Air Throttle

[pattypape]

We fired up the Bird, after not running it for about two months,
and we have no foot throttle acceleration.

Our 88 FC has a Williams air control foot trottle.
And a Bendix Cruise Controll.

Both the foot throttle and the cruise control, share the same air
throttle cylinder.
This air cylinder with the attached cable to the injection pump,
works great, for the high / low idle, that is set by the Resume/Set
switches on the Bendix Cruise.
The foot brake also lowers the idle.

It appears that the Cruise control is out of the circuit
when turned "Off". The cruise worked great on our last trip.

So is there a check valve or air solenoid switch in the air plumbing
between the air supply and the foot throttle?? Where is it located??

Any help or ideas are needed and welcome.

I was able to get some information from the drawings, that Ralph has
in the files.
But these seem to be for a 6V or 8V and may be different than our FC.

Bill 88 FC Michigan

[Ralph L. Fullenwider]

Bill:

I missed one item on that air throttle. The out put air from the air
throttle valve, the copper tubing should go to an air throttle control
cylinder modulator. It will be or should be located in the general area of
the throttle valve.

Safe travels,

Ralph and Charolette Fullenwider
84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 02:03 AM 1/25/2008 +0000, you wrote:
>We fired up the Bird, after not running it for about two months,
>and we have no foot throttle acceleration.
>
>Our 88 FC has a Williams air control foot trottle.
>And a Bendix Cruise Controll.
>
>Both the foot throttle and the cruise control, share the same air
>throttle cylinder.
>This air cylinder with the attached cable to the injection pump,
>works great, for the high / low idle, that is set by the Resume/Set
>switches on the Bendix Cruise.
>The foot brake also lowers the idle.
>
>It appears that the Cruise control is out of the circuit
>when turned "Off". The cruise worked great on our last trip.
>
>So is there a check valve or air solenoid switch in the air plumbing
>between the air supply and the foot throttle?? Where is it located??
>
>Any help or ideas are needed and welcome.
>
>I was able to get some information from the drawings, that Ralph has
>in the files.
>But these seem to be for a 6V or 8V and may be different than our FC.
>
>Bill 88 FC Michigan
>
>

[Mike Hohnstein]

If you turn the wheels to the right full lock, you can see the treadle valve for the air throttle. Verify air is getting there, then crack the supply line to the throttle actuator and see if air is getting there. As it's been sorta cold, you might have some ice blocking supply. The bendix 'mess' is on the inside battery box wall. I think I'd start with a heat gun on all the lines with the air supply at pressure. Many potential blockage opportunities in that system.

MH

----- Original Message -----

From: "billpatty@hotmail.com"

To: "WanderlodgeForum@yahoogroups.com"

Sent: Thursday, January 24, 2008 8:03 PM

Subject: [WanderlodgeForum] Help with Air Throttle

We fired up the Bird, after not running it for about two months,
and we have no foot throttle acceleration.

Our 88 FC has a Williams air control foot trottle.
And a Bendix Cruise Controll.

Both the foot throttle and the cruise control, share the same air
throttle cylinder.
This air cylinder with the attached cable to the injection pump,
works great, for the high / low idle, that is set by the Resume/Set
switches on the Bendix Cruise.
The foot brake also lowers the idle.

It appears that the Cruise control is out of the circuit
when turned "Off". The cruise worked great on our last trip.

So is there a check valve or air solenoid switch in the air plumbing
between the air supply and the foot throttle?? Where is it located??

Any help or ideas are needed and welcome.

I was able to get some information from the drawings, that Ralph has
in the files.
But these seem to be for a 6V or 8V and may be different than our FC.

Bill 88 FC Michigan

[erniecarpet@...]

In a message dated 1/26/2008 6:45:51 P.M. Central Standard Time, billpatty@... writes:

Inside this box are all the associated parts for the Bendix cruise,

When I had my FC, and before I knew Ralph, I explored that box. Once, open and closed it back up. Too much "stuff" for me to figure out. Glad I know Ralph. You can't have too many good friends.

Ernie Ekberg
83PT40
Weatherford, Tx

---

Who's never won? Biggest Grammy Award surprises of all time on AOL Music.

[pattypape]

Vroom, Vroom, What a Happy Sound.

Late model FC's and many 6V's and 8V's have the Bendix Cruise
Control, which also incorporated the air treadle foot throttle.

There are ten valves, these include: inversion valves,
reducing valves,check valves, double check valves and solenoid
metered orifice valve switches. .
The electronic module gets input from the ignition, air brakes,
park brake, speed sensor, cruise, resume and set controls.
The reason for the above description, is the fact that the Bendix
is no longer supported, and it is a very complex system.

If an owner has trouble or problem , I would suggest evaluating
a complete updated replacement unit,
Although the Bendix is a very reliable system, information
to repair and trouble-shoot is rare and hard to find. The wiring
and the numerous copper tubing lines are very difficult to trace.
Parts are not in stock and difficult to locate.

Fortunately, I was successful in repairing our no foot throttle
acceleration problem, But many phone calls and trouble shooting
hours were needed. Our problem was a 12V solenoid that controls
air pressure flow.

Bill 88 FC Michigan



--- In WanderlodgeForum@yahoogroups.com, "pattypape"
wrote:
>
> We fired up the Bird, after not running it for about two months,
> and we have no foot throttle acceleration.
>
> Our 88 FC has a Williams air control foot trottle.
> And a Bendix Cruise Controll.
>
> Both the foot throttle and the cruise control, share the same air
> throttle cylinder.
> This air cylinder with the attached cable to the injection pump,
> works great, for the high / low idle, that is set by the Resume/Set
> switches on the Bendix Cruise.
> The foot brake also lowers the idle.
>
> It appears that the Cruise control is out of the circuit
> when turned "Off". The cruise worked great on our last trip.
>
> So is there a check valve or air solenoid switch in the air
plumbing
> between the air supply and the foot throttle?? Where is it
located??
>
> Any help or ideas are needed and welcome.
>
> I was able to get some information from the drawings, that Ralph
has
> in the files.
> But these seem to be for a 6V or 8V and may be different than our
FC.
>
> Bill 88 FC Michigan
>

[erniecarpet@...]

Hi Bill, I, indeed have a black box and inside that box is just about the same stuff as in your coach. Best thing is to keep the cover on that box at all times~O]

Ernie Ekberg
83PT40
Weatherford, Tx

---

Who's never won? Biggest Grammy Award surprises of all time on AOL Music.

[maureyroad]

Bill, Where is the 12V solenoid that controls
air pressure flow?
Dan
88pt38
Jackson, MS
>
>
>
> --- In WanderlodgeForum@yahoogroups.com, "pattypape"
> wrote:
> >
> > We fired up the Bird, after not running it for about two months,
> > and we have no foot throttle acceleration.
> >
> > Our 88 FC has a Williams air control foot trottle.
> > And a Bendix Cruise Controll.
> >
> > Both the foot throttle and the cruise control, share the same air
> > throttle cylinder.
> > This air cylinder with the attached cable to the injection pump,
> > works great, for the high / low idle, that is set by the
Resume/Set
> > switches on the Bendix Cruise.
> > The foot brake also lowers the idle.
> >
> > It appears that the Cruise control is out of the circuit
> > when turned "Off". The cruise worked great on our last trip.
> >
> > So is there a check valve or air solenoid switch in the air
> plumbing
> > between the air supply and the foot throttle?? Where is it
> located??
> >
> > Any help or ideas are needed and welcome.
> >
> > I was able to get some information from the drawings, that Ralph
> has
> > in the files.
> > But these seem to be for a 6V or 8V and may be different than our
> FC.
> >
> > Bill 88 FC Michigan
> >
>

[pattypape]

Hi Dan,

This solenoid, that I referred to in the post, controls the air flow
to the Foot throttle, in conjuction with the Bendix Cruise Control.
On the 88 FC front engine it is located, under the coach between
the engine and battery box on the driver side. It is behind a steel
cover mounted to a steel box about 12" x 14" x 2".
Inside this box are all the associated parts for the Bendix cruise,
including the valves, solenoids, electronic module and lots of copper
pipe connecting all the stuff together, It is quiet a RAT's nest.
On an SP it is in the rear, driver side on the engine fire wall, open
and easy to see and work on. BB used this valve in several areas to
control air flow.
I do not know if your 88 PT Bird uses this system or where it would
be located.

The valve looks like this:
http://www.allenair.com/2-3wayvalves.htm

Or a better view here:

http://www.allenair.com/pdf/2-3WayValves.pdf

go to page #3 and scroll to the bottom , left side,
it is labeled " Grommet Housing Suffix G"

Bill 88 FC Michigan



--- In WanderlodgeForum@yahoogroups.com, "maureyroad"
wrote:
>
> Bill, Where is the 12V solenoid that controls
> air pressure flow?
> Dan
> 88pt38
> Jackson, MS
> >
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com, "pattypape"
> > wrote:
> > >
> > > We fired up the Bird, after not running it for about two months,
> > > and we have no foot throttle acceleration.
> > >
> > > Our 88 FC has a Williams air control foot trottle.
> > > And a Bendix Cruise Controll.
> > >
> > > Both the foot throttle and the cruise control, share the same
air
> > > throttle cylinder.
> > > This air cylinder with the attached cable to the injection
pump,
> > > works great, for the high / low idle, that is set by the
> Resume/Set
> > > switches on the Bendix Cruise.
> > > The foot brake also lowers the idle.
> > >
> > > It appears that the Cruise control is out of the circuit
> > > when turned "Off". The cruise worked great on our last trip.
> > >
> > > So is there a check valve or air solenoid switch in the air
> > plumbing
> > > between the air supply and the foot throttle?? Where is it
> > located??
> > >
> > > Any help or ideas are needed and welcome.
> > >
> > > I was able to get some information from the drawings, that
Ralph
> > has
> > > in the files.
> > > But these seem to be for a 6V or 8V and may be different than
our
> > FC.
> > >
> > > Bill 88 FC Michigan
> > >
> >
>

[pattypape]

Hey Ernie, that is funny,,,.....

But you may have a similiar or a more complicated system on your PT.

Bill 88 FC


--- In WanderlodgeForum@yahoogroups.com, erniecarpet@... wrote:
>
>
> In a message dated 1/26/2008 6:45:51 P.M. Central Standard Time,
> billpatty@... writes:
>
> Inside this box are all the associated parts for the Bendix
cruise,
>
>
> When I had my FC, and before I knew Ralph, I explored that box.
Once, open
> and closed it back up. Too much "stuff" for me to figure out. Glad
I know
> Ralph. You can't have too many good friends.
>
> Ernie Ekberg
> 83PT40
> Weatherford, Tx
>
>
>
>
> **************Biggest Grammy Award surprises of all time on AOL
Music.
> (http://music.aol.com/grammys/pictures/ne...-a-grammy?
NCID=aolcmp003000000025
> 48)
>

[Donald Spithaler]

Bill
I'm glad you have it fixed. Nothing like having trouble in your own
drive way. I don't even mind that.I have one of those valves for my
Horton fan on the curb side engine compartment on the frame rail & I
have seen the one in my drivers side engine compartment for the Bendix
cruise control. Where were you able to find one?
Don spithaler
89 SP 36'
Butler, PA In Zephyrhills, FL

On Jan 26, 2008 7:45 PM, pattypape wrote:
>
>
>
>
>
>
>
> Hi Dan,
>
> This solenoid, that I referred to in the post, controls the air flow
> to the Foot throttle, in conjuction with the Bendix Cruise Control.
> On the 88 FC front engine it is located, under the coach between
> the engine and battery box on the driver side. It is behind a steel
> cover mounted to a steel box about 12" x 14" x 2".
> Inside this box are all the associated parts for the Bendix cruise,
> including the valves, solenoids, electronic module and lots of copper
> pipe connecting all the stuff together, It is quiet a RAT's nest.
> On an SP it is in the rear, driver side on the engine fire wall, open
> and easy to see and work on. BB used this valve in several areas to
> control air flow.
> I do not know if your 88 PT Bird uses this system or where it would
> be located.
>
> The valve looks like this:
> http://www.allenair.com/2-3wayvalves.htm
>
> Or a better view here:
>
> http://www.allenair.com/pdf/2-3WayValves.pdf
>
> go to page #3 and scroll to the bottom , left side,
> it is labeled " Grommet Housing Suffix G"
>
> Bill 88 FC Michigan
>
> --- In WanderlodgeForum@yahoogroups.com, "maureyroad"
>
>
> wrote:
> >
> > Bill, Where is the 12V solenoid that controls
> > air pressure flow?
> > Dan
> > 88pt38
> > Jackson, MS
> > >
> > >
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "pattypape"
> > > wrote:
> > > >
> > > > We fired up the Bird, after not running it for about two months,
> > > > and we have no foot throttle acceleration.
> > > >
> > > > Our 88 FC has a Williams air control foot trottle.
> > > > And a Bendix Cruise Controll.
> > > >
> > > > Both the foot throttle and the cruise control, share the same
> air
> > > > throttle cylinder.
> > > > This air cylinder with the attached cable to the injection
> pump,
> > > > works great, for the high / low idle, that is set by the
> > Resume/Set
> > > > switches on the Bendix Cruise.
> > > > The foot brake also lowers the idle.
> > > >
> > > > It appears that the Cruise control is out of the circuit
> > > > when turned "Off". The cruise worked great on our last trip.
> > > >
> > > > So is there a check valve or air solenoid switch in the air
> > > plumbing
> > > > between the air supply and the foot throttle?? Where is it
> > > located??
> > > >
> > > > Any help or ideas are needed and welcome.
> > > >
> > > > I was able to get some information from the drawings, that
> Ralph
> > > has
> > > > in the files.
> > > > But these seem to be for a 6V or 8V and may be different than
> our
> > > FC.
> > > >
> > > > Bill 88 FC Michigan
> > > >
> > >
> >
>
>