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Discussion Starter #1
Hi,
I’ve got a question to especially A/C-Montreal-owners (and of course to all others) :

Can anybody tell me the function (task) of the long wire at the rear end of the A/C-switch, I think it is a capillary tube ?
And how can I test the function ?
And the last question : should the wire bend to a spiral (coil), as shown in the picture in the spare parts catalogue ?

Hope someone knows the part from his own car and recognize the look like:detective:

greetings from foggy Bavaria
Andreas
 

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Hi Andreas I just happened to have a N.O.S. version of the exact part sitting on the desk next to me. The label on the part says:
"3ART5RF8 COLD CONTROL VOLTS A.C.120, 240 AMPS F.L. 10.0 5.0 AMPS L.R. 60.0 30.0"
There is a capillary tube on the part and the one in the NOS box has the tube wrapped around the cold control. I believe this part is a primitive type of thermostat to regulate the cabin temperature to the desired ‘set point’.
Hopefully someone with more A/C experience will come along and direct us further. I also have 105.64.10.027.00 (NOS) here as well that mounts on the compressor (I see one on eBay in Australia for about $575!).

Mark
 

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Andreas,

Hopefully, someone on the BB can advise you how to test this switch but, in the meantime, here are some photos of one in my collection that I do not need. I also have other new old stock air conditioning parts.

Greetings from a wet England (as usual),

Alex.
 

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Discussion Starter #4
Hello,
thank you both for your reply's, now I am one step further :
Mark, I agree with you that this capillary tube is a type of thermostate.
After knowing the text on the label (mine is unreadable) with all the electricity numbers, I guess the capillary tube disconnect at it's shortening (while decreasing ambient temperature) at a certain point the current and so the A/C-compressor is switched off.

I will test this theory per laying the switch in our refrigerator (providing that my wife will agree with that:whistling:).

If this theory is right, wouldn't be the Montreal one of the first car even with an automatically controled air-conditioning (1972 !) ?

At least I intend to bend the wire to a spiral, as shown in the picture of the spare parts catalogue and in the foto of Alex (by working very very carefully !).

Thank you again,
Andreas
 
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