FC Air Throttle

[Richard Gideon]

Allenair Solenoid Valve

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Quote:
Originally Posted by Bill Pape
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: I'm so 'glad' you had this problem with the treadle pedal air
throttle this past year. Your troubleshooting skills led me to a
recent 'fix' on my late model FC. The same 'no foot throttle' problem
happened to me a few days ago after squirting some CRC heavy duty
silicone spray lube into the Bendix solenoid assembly and the
Allenair solenoid pilot valve, (bad idea).

Anyway I restored the air throttle operation by replacing the
Allenair solenoid valve inside the cruise control system black box
(drivers side behind bank of 4 batteries). Air throttle and cruise
control is now smooth as silk and the new metric cable from Midwest
Control Products Inc http://www.midwestcontrol.com/push-pull-
cables.php is working great. Thanks for the help and thanks to all
who make this forum work.

The Allenair solenoid valve is a 3-way, normally open, 1/4" ports,
12VDC.

Allenair part number 3OBY4A G 12VDC $46.67 plus shipping.

http://www.allenair.com/Catalog/Onli...Way_Valves.pdf
__________________
Dick Gideon
Freedom Bird
1989 35FCSB
Rolla, MO