Last couple days I did a lot of reading about blower motors and conversions and such for 12V motors in the AD trucks (and some others). I read all about resistors and other methods of dropping the voltage... Except my old 6V motor is toast, and I don't mind a non original 12V motor if it is an easy swap, easy to get, and very functional.
Yesterday I took some of the part numbers I found mentioned and went to NAPA to see what they could get.
One of the restoration parts vendors sells a Unimotor 14504 04054 (from the picture of it) for near $60
Siemens PM354 is one option mentioned and Autozone list them for $28
NAPA gave me their part numbers: 655-1022. This one has 1/4" shaft and bushing for 5/16", will run either way depending on polarity, and is approx size as the original Delco in my original GM/Harrison recirculating heater. Cost $33 655-1020. This one is longer and has 5/16" shaft. Might fit the fresh air heater? Other than shaft size I think it would fit the recirculating heater I have too. Cost $27 The motor sticker shows VDO part number PM354, box has the NAPA number.
Attached, PICTURE of motors side by side
In my searching I didn't find many clear answers on what motor, hope this helps someone else in the future. And should save anyone about half the money for often the same motor from the online vendors.
I'll have more pictures as I get the heater back together.
More pictures attached of my heater
Grigg
Last edited by Grigg; 08/23/20175:43 PM. Reason: add pictures
