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Old 05-10-2020, 04:21 PM   #1
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1982 28' Airstream 280
Grantsburg , Wisconsin
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'82 Diesel Excella Heater motor replacement

My heater motor needed replacement. It's very accessible so I thought it would be a piece of cake. Bought a new motor/fan assembly from O'Rileys. It was easy to install and started right up but I hardly get any blown air through the ducts. Everything is open so I am assuming that I must have gotten a slightly different assembly than came with the camper. I can't find the VIN so I'm not exactly sure what model Chevy chassis this is. Can anyone guide me to the right place to buy a heater motor and fan assembly?
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Old 05-11-2020, 03:19 PM   #2
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1982 28' Airstream 280
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I think I may be learning something here about old Airstreams. Apparently they didn't use the standard Chevy parts for their heating/cooling equipment. I'm talking with the possible supplier now, but they are asking me for a picture or model number of the heater fan. Of course I threw that away thinking this would be an easy fix. Does anyone have a picture of your blower motor/fan assembly that you might share with me? If this works I will give everyone the contact info for these replacement blowers.
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Old 05-11-2020, 04:07 PM   #3
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Curious why the motor was replaced? Same symptoms as new motor?

VIN. Look on registration or title.

Old v new units, any visible why does it look like ???? This.
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Old 05-11-2020, 04:39 PM   #4
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1985 32.5' Airstream 325
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Do you have a pic of the assembly
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Old 05-11-2020, 08:59 PM   #5
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1982 28' Airstream 280
Grantsburg , Wisconsin
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Blower motor pictures

There is another Excella in town and I was able to pull the motor and get a picture of it. the vanes are in the opposite direction than the ones available for a Chevy P20, so this is not a stock item, and the face width is narrower which doesn't seem to matter; there is enough room in the housing for a bigger fan.
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Old 05-12-2020, 10:04 AM   #6
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1972 31' Sovereign
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Blower

You could reverse motor rotation by changing the motor wires around to see if it would blow better.
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Old 05-12-2020, 10:08 AM   #7
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Or swap fan blades
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Old 05-12-2020, 11:22 AM   #8
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1982 28' Airstream 280
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I tried that. This particular fan doesn't blow well in either direction. It appears to me that I need a CCW rotation (when looking at the face of the fan). I see a Four seasons model 35333 that actually looks like a pretty good match but the vanes are different. 35333 rotates CCW and 35334 rotates CW, but the vane designs are totally different. And the catalog says it is CCW looking at the fan, but the sales guy at Four Seasons thinks that the CCW rotation is when viewed from the back of the motor. Aaaaaargh!
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