I'm in the process of rebuild/replacing the heater core on my 69 with AC. There is a selector box vaccuum actuator on the back side of the box (the one between the inside firewall and the selector box). The AIM isn't very clear as to what the part number is,but DR Rebuild shows the location in their catalog volume 27 page 56 column one item "B" part number 9222308. They no longer have this item in stock and can't give me delivery date. Does anyone know where I can get one or tell me how to check it to see if it's OK? I have check the actuator but I'm not sure if it is working correctly. The actuator has two vacuum ports one on the outside of the selector box and one on the inside. The one on the outside holds vacuum but the one on the inside doesn't. Is this correct? I would like to replace it before puting it gack together since it would be impossible to do once it back together and I don't really want to have to take it apart again.
Thanks
Thanks
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