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Heater Door Spring

ties581006

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Good day. I'm roughly 6 years into the ten year project of restoring a Longbridge 100-6, #50101. I'm doing the work myself, learning as I go and loving every minute I spend working on it and learning about it.

The Big Healeys have two heater vent doors below the dash that control airflow to the footwell area. Moss sells the heater vent assembly as 363-122, item 165 in the Heater diagram of their on-line catalog. My original vent doors are in excellent condition but they are both missing the little torsion spring. Does anyone know of a source for just the spring or know of a workable substitute? Without the spring, the two doors just hang open.

I'm not even sure how that spring worked. Does it hold the door in the open AND closed positions? I can't visualize how it would work beyond the picture in the Moss catalog.

Any ideas or help would be much appreciated. Thank you in advance.

Mike T. in Minnesota
 
Looks like the spring holds the door in open or closed position
The spring itself does not look complicated

Air Vent front closed.jpg Air Vent side.jpg Air Vent open.jpg Air Vent back.jpg
 
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