110 cheap NAPA heater fan replacement - Defender Source
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  #1  
Old March 20th, 2018, 09:12 PM
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110 cheap NAPA heater fan replacement

Just finished rebuilding the heater box on my 110. The fan was full of crap and rusted. Reading prior post about modifying a fan so you can use the switches ground I found a fan at Napa that requires no rewiring. Part number 655-1778 also known as PM137. Cost $30!! Had to file the flats down a little bit farther on the shaft to allow the fan to be in the proper position. Also drilled new mounting holes with rivnuts in the housing. My studs had broken off when removing the old fan so was using rivnuts anyway.
Only had my old weak fan to compare to but this fan puts out some air!!! Make sure the polarity is correct. If it's wrong it blows but not hard.
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Old March 20th, 2018, 09:51 PM
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Good to know. Thanks!
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Old March 20th, 2018, 10:31 PM
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I’m guessing this was the prior thread you referenced (uses PM136):
http://www.defendersource.com/forum/...tml#post396404
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  #4  
Old March 20th, 2018, 11:37 PM
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Jeremy, this was a RHD heater box rebuild, correct? Assuming the fan blows the right direction?

Thanks!
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Old March 21st, 2018, 09:45 AM
defender425
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Quote:
Originally Posted by nathanwind View Post
I’m guessing this was the prior thread you referenced (uses PM136):
http://www.defendersource.com/forum/...tml#post396404
Yes that's what got me started
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Old March 21st, 2018, 09:49 AM
defender425
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Quote:
Originally Posted by steinhnj View Post
Jeremy, this was a RHD heater box rebuild, correct? Assuming the fan blows the right direction?

Thanks!
Correct mine is RHD. The PM137 does run the wrong way according to the fan blades. The connector is two 1/4" spade terms so I just hooked it up so it ran the correct way. It blows running both ways. Backwards you get meager air flow, correct way it will blow your socks off!
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Old March 21st, 2018, 01:02 PM
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Quote:
Originally Posted by defender425 View Post
Make sure the polarity is correct. If it's wrong it blows but not hard.
should turn/blow in the opposite direction if polarity is reversed
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