Well, I have good news to report. I've just finished removing, refurbishing and reinstalling the Deluxe Fresh air heater in my '50 1/2 ton. And guess what.......it actually blows hot air and does not leak!! It only took me a couple of weeks.
I'm really proud of how it turned out and that I actually did the job myself. I know most of you are laughing right now about how simple it is to do, but when you've never done it before it can raise doubts about ones abilities. I kept at it and now have a working heater for this winter to show for my considerable efforts. It's a nice feeling of accomplishment, and a feeling I'm sure all of you get whenever you fix something on your old AD and then enjoy the results. Thanks to all of you who gave advice and/or sent schematics and photos. I really appreciate having you guys to come to with my technical questions. It made the job a lot easier for me.

Now to report the condition of the heater core that my new friend John in Kerrville, TX promised me, and then to report the estimated cost of a heater recore from Rudy at the radiator shop. I'll be talking to him this week and will try to post his prices, phone number and address after he gives them to me.

Spot