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Removing 8531-lll complete furnace from a Westwind WW275 Susan 11-5-15  
I need to remove the complete furnace from my Westwind WW275 fifth wheel. The motor is a 8531-lll Hydro Flame. I haven't been able to find anything on YouTube to show me how it's done.
Re: Removing 8531-lll complete furnace from a Westwind WW275 Keith 11-5-15  
Hi Susan, yeah it's getting to be that time of year again... if you're just replacing the motor there is no need to remove the whole furnace. That is a good thing about Atwood most have an access door. There is very little that can't be repaired/replaced with it installed in the RV. Here's how to replace the motor or remove what you have to to do other repairs. Turn off propane and T'stat, remove one screw from the timer relay (has 4 wires going to it on left front cover, series IV may/may not have) loosen the other and pull it loose, you don't have to remove the wires this way. Remove 4 screws from the plastic cover it is on and remove the cover, remove the PC board, remove the exhaust tube, take the propane line loose, take the igniter wire(red)loose and one quick disconnect wire (both on propane line side), remove 3 - 4 screws from around the exhaust hole area that hold the burner in and one on the round edge (not on IV), pull out the burner, loosen set screw on the small fan, hold the large fan and rock the small one while pulling to remove it. You may have to sand rust off the shaft end if it won't come off. There are 3 hex screws behind the small fan (not on IV see note below) remove them and you should be able to pull the motor and blower fan out as one assembly. Remove and install fan on new motor. Reverse all this to install. You may have to change one wire connector on the new motor to hook it up. Pay attention to where the motor wires were connected as the motor will run backwards if you reverse them. Note: this is for II & III series. IV is similar, but the motor is held in with a hose clamp, it isn't hard to figure out the difference's. Check LP connection for leaks with soapy water after installation.
If you really have to remove the whole furnace for some reason, turn off the LP, disconnect the LP line, disconnect the wires going to the unit from the back, remove the ducting by twisting and pulling at the furnace, remove any screws mounting the furnace to the floor, remove the outside screws around the front lip, remove the furnace. Good luck
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