list, i'm still needing a part for my #1 '69 atc unit, known as a
"transducer" which is located in the servo power unit. i thought i had one
coming but haven't heard from the guy for quite a while so i guess that one
is down the tubes. this car will be for sale as soon as i get around to
putting it on the sell list. many new/rebuilt parts: transmission, front
calipers, carb, tires, top, etc. this has been a fun project and i have
learned a bunch from this car (especially the sequential tail lamps !) . i
will then be able to turn my attention to my #2 '69 "green weinie"! contact
direct.
mo jo
-----Original Message-----
From: jdporter@xxxxxxxxxxx <jdporter@xxxxxxxxxxx>
To: mailing-list@xxxxxxxxxxxxxxxx <mailing-list@xxxxxxxxxxxxxxxx>
Date: Wednesday, November 07, 2001 12:14 AM
Subject: IML: atc servo problem
> i may need a little help from the list. i have discovered a problem in
>the servo power unit of the atc in my #1 69. to be more specific, i'm
>needing a device from inside the power unit called a transducer. it is
about
>2 inches square with three electrical terminals and three vacuum ports. it
>functions as a vacuum switch using two electrical signals to switch from
one
>port to the other. mine has one of the two solenoid windings open so it can
>only switch one way. so......does anyone have a spare or salvage unit i can
>get the transducer from ? please reply privately.
> mo jo 2x69
>-----Original Message-----
>From: jdporter@xxxxxxxxxxx <jdporter@xxxxxxxxxxx>
>To: mailing-list@xxxxxxxxxxxxxxxx <mailing-list@xxxxxxxxxxxxxxxx>
>Date: Sunday, November 04, 2001 10:42 AM
>Subject: Re: IML: atc servo repro
>
>
>>i don't know abt anyone else here, but i would be interested in the
contact
>>information for the tennessee co. of the atc servo replacements dave.
>> mo jo 2x69's
>> no substitute for cubic inches
>>-----Original Message-----
>>From: Dave Duricy <desoto@xxxxxxx>
>>To: mailing-list@xxxxxxxxxxxxxxxx <mailing-list@xxxxxxxxxxxxxxxx>
>>Date: Saturday, November 03, 2001 2:57 PM
>>Subject: Re: IML: Dual AC unit for 73 Imp
>>
>>
>>>At 11:30 AM 11/3/01 -0800, you wrote:
>>>>When I purchased my 73, it came with a dual ac unit
>>>>that the owner had pulled out of a junk yard car. Are
>>>>these units pretty rare? Was it a popular option? I
>>>>Is there a way that the temp could
>>>>stick so that even when I set it at 85 it still blows
>>>>65? I later got it working by fiddling with the dial.
>>>
>>>Chad,
>>>
>>>Oh, yeah, there is a way it can stick!
>>>
>>>Inside the AutoTemp servo (mounted on your passenger-side fender) is a
>>>small universe whose axis is an electric motor and gear set.
>>>
>>>The motor and gear set propel three rotating systems within the servo:
>>>
>>>1) The hot water valve at the bottom of the unit.
>>>2) The vacuum valve/gate/switch in the top.
>>>3) The electric switch sweep arm also at the top.
>>>
>>>All three work simultaneously to set the blower speed, water flow, and
>>>air-door position that together create your interior temperature.
>>>
>>>Normally this arrangement works very well. However, it can stick -
usually
>>>for three reasons:
>>>
>>>1) The hot water valve becomes stuck within its housing due to lack of
use
>>>or dirty coolant.
>>>2) The plastic housing of the AutoTemp servo has cracked allowing coolant
>>>to contaminate the electric motor and gear set. This results in rust or
>>>sticky goo that jams the rotating action.
>>>3) The metal contact has fallen off the end of the electric switch sweep
>>>arm and jammed the arm halting the rotating action.
>>>
>>>Reason 1 is the most common cause for AutoTemp sticking. Since your
system
>>>recovered after you fiddled with it, this is probably your reason.
>>>
>>>To prevent this type of stickage make sure that your coolant is clean
then
>>>run your AutoTemp system for several minutes on Hi-Def. Hi-Def causes the
>>>water valve to open to its widest position thus wetting the valve and
>>>running the motor, gear set, and vacuum gate through their widest range
of
>>>motion.
>>>
>>>It helps to know that you can hear a healthy AutoTemp servo working.
>Listen
>>>carefully to the unit just after hitting Hi-Def. You should hear a steady
>>>whirring sound with a metallic tone. The servo can also be heard
>>>immediately after turning of the car and the AutoTemp. The system will
>whir
>>>while it parks.
>>>
>>>If the sound stops and starts or is absent, well. . .
>>>
>>>If you drive your Imperial every day, I recommend replacing the original
>>>AutoTemp servo with the aluminum bodied reproduction made in Tennessee.
>>>It's expensive, but worth every penny.
>>>
>>>As for the dual air-conditioning, my 1971 Imperial, which is now owned by
>>>Elijah Scott, has/had the dual air. It was great! Maybe Elijah could
>>>photograph the system to show you how yours could be installed?
>>>
>>>Good Luck!
>>>Dave Duricy
>>>The Imperialist
>>>w3.one.net/~desoto
>>>DeSotoland
>>>desotoland.com
>>>
>>>
>>>
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>>
>>
>>
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