Troubleshooting Bendix Fast Idle/Cruise Control on 89 35FC 3208 ATAAC

[Richard Hayden]

Still is not working even with the new CC-5. I'll look into it later after
we've settled at the winter quarters. Leaving tomorrow morning.

Dick Hayden - '87 PT 38 - Lake Stevens, WA

----- Original Message -----
From: Curt Sprenger
To: WanderlodgeForum@yahoogroups.com
Sent: Monday, October 15, 2007 3:20 PM
Subject: Re: [WanderlodgeForum] Re: Troubleshooting Bendix Fast Idle/Cruise
Control on 89 35FC 3208 ATAAC


Dick,

FYI in case you need a CC-5 unit. The CC-5 unit is no longer manufactured. A
couple of us just purchased CC-5 potentiometer units through Brake & Clutch
Supply, Seattle, Washington. Talk to Spark. I bought one for possible
future need. Dick Hayden bought one because his CC was not working.

On 10/15/07, Richard Gideon >
wrote:
>
> Thanks for the reply Ralph: Early this morning I got into my "blue
> box" and retrieved the booklet describing the operation and
> troubleshooting the Bendix Cruise Control System (SD-10-1)and on page
> 15 of the booklet I found the symptoms, cause & remedy for what
> appears to be ailing the CC on my FC.
>
> V. Cruise Control System oscillates above and below the speed
> setting. Will not hold a specific speed setting within plus or minus
> 1 mph on level highway.
>
> Cause, CC-5 potentiometer or its wiring is defective.
>
> Remedy. Visually inspect for broken or obviously damaged wiring to
> the CC-5 potentiometer (Figure 13). Disconnect wiring connector 3 in
> Figure 13 and check the resistance between the sockets shown:
>
> 1 and 3 3600-4400 ohms
> 2 and 3 1080-1320 ohms
> 1 and 2 4320-5280 ohms
>
> If these readings are not obtained, replace the CC-5 potentiometer.
>
> I'll post later this week, with the results of my testing. Thanks
> for the guidance...I"ll dig out my digital volt/ohmeter.
>
> Dick Gideon
> Freedom Bird
> 1989 35FCSB
> Rolla, MO
>
> --- In
WanderlodgeForum@yahoogroups.com lodgeForum%40yahoogroups.com>,
> "Ralph L. Fullenwider"
> wrote:
> >
> > PT cruise/air throttle/high idle
> >
> > Some time back, I posted to the files section, a couple of files
> on how
> > these systems work and inter act.
> >
> > As for the FC's it is a little difference because the factory <BB>
> dip
> > switch settings allowed the fc cruise controls to work slightly
> different
> > than the PT's.
> >
> > As for the problem in the FC, where it is on or off and no in
> between, I
> > would suspect the CC5 potentiometer internal of the cylinder to be
> faulty.
> > All this can be checked with a decent Multimeter and following the
> checks
> > in the Bendix manual that should be in the blue box.
> >
> > The only thing I have found that was done a little funky form the
> factory,
> > is how the clutch switch was wired up since there are no clutches
> in the
> > Birds and that was done with 2 solenoids in the system. I have
> actually
> > taken those out of the system to get my cruise working properly and
> that
> > was done with a pair of side cutters! One snip and you have
> cruise.
> > Now the problem with the break pedal not canceling the cruise is or
> has
> > generally been a bad set switch or corroded contacts in a
> connector. And
> > can usually be cleared up by cleaning the pin contacts coming from
> the
> > Bendix control.
> >
> > Remember that our Coaches put out 120 to 130 psi of air and there
> is a
> > regulator with the bendix set up to drop that pressure to 80 to 90
> psi,
> > thereby making the working difference of only a few psi
> differential that
> > the electronics of the bendix system reads and enacts on.
> >
> > >
> >
> > Safe travels,
> >
> > Ralph and Charolette Fullenwider
> > 84FC35
> > Duncan, Oklahoma
> >
>
>
>

--
Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA

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