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Old 10-26-2015, 08:09 AM   #1
WBCCI 8562
Jim in Pima's Avatar
1975 31' Sovereign
Pelzer , South Carolina
Join Date: Nov 2007
Posts: 225
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Question Remove Duo Therm 66117 furnace

I have a small Duo Therm 66117 furnace in my truck camper. The fan
motor is really sick, so want to take the furnace out to repair the motor.
Problem is, this camper lived in Florida for years and the outside vent
I believe has to come off, is well rusted in. Have soaked it with "Kroil"
several times to no avail.
any none destructive suggestions appreciated.

Jim in Pima Az, enjoying our 1975 31 ft Airstream Sovereign
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Old 10-26-2015, 05:55 PM   #2
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1987 32' Excella
Nepean , Ontario
Join Date: Mar 2006
Posts: 1,007
Had an issue like this when I had a '94 LY motor-home that had been in FL. It took about 10 days of liberally spraying WD-40 on the bolt that held the inner and outer assemblies together and trying to unscrew the nut. Even did a bit of careful heat from a propane torch. As I was about to give up, the nut loosened and came off.
AIR 12148
1987 Excella 32-foot
1999 Dodge Ram 2500HD Diesel
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