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Topic: Atwood furnace Fan Screech (Read 539 times) previous topic - next topic

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Atwood furnace Fan Screech
Atwood propane furnace in 99 U270 has developed a screech that comes and goes, is from a small noise to a lot of noise. It's a bit cold here to be pulling it out and after reading old posts i am assuming I have to pull it out to oil the bearings...

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  • jor
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Re: Atwood furnace Fan Screech
Reply #1
It is likely the motor rather than the fan. The only real repair is to replace the motor. they are inexpensive and the job isn't bad. Sometimes the screeching will go away for awhile.
jor

Re: Atwood furnace Fan Screech
Reply #2
Thanks, it has done the screech a few times over the last 4 months for a second and not repeated itself so did not pay it much attention.
David

  • Gary Bouland
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Re: Atwood furnace Fan Screech
Reply #3
Search the forum for Atwood fan motor and you will find fixes for it.  Quick fix is oil on motor shaft close to bearing with a long spout oiler, won't last but will solve it quickly.
Gary B

  • bbeane
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Re: Atwood furnace Fan Screech
Reply #4
While you have the motor out oiling it take a picture of the numbers on it. There are many to choose from.

Re: Atwood furnace Fan Screech
Reply #5
Atwood propane furnace in 99 U270 has developed a screech that comes and goes, is from a small noise to a lot of noise. It's a bit cold here to be pulling it out and after reading old posts i...


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Re: Atwood furnace Fan Screech
Reply #6
It is not necessary to pull the motor to lubricate the bushings.

A light-viscosity non-detergent oil such as sewing machine oil is best.

Put drops on the shaft on each side of the motor.  Let the oil wick in.

I have used oil on the end of a long...

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Re: Atwood furnace Fan Screech
Reply #7
Brett, can I oil from the inside the coach or do I remove the burner and go to it from the outside?
David

Re: Atwood furnace Fan Screech
Reply #8
From the outside.

Re: Atwood furnace Fan Screech
Reply #9
Thanks Brett
Of course it's the outside!!!

Re: Atwood furnace Fan Screech
Reply #10
Zoom spout oiler is the handy tool for this job.

https://www.homedepot.com/p/DIAL-4-oz-Evaporative-Cooler-Zoom-Spout-Oil-5714/100128593

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Re: Atwood furnace Fan Screech
Reply #11
Thanks all, got both bearings oiled with the zoom spout oiler with turbine oil in it, back to normal for the moment, appreciate the help.

  • Twig
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Re: Atwood furnace Fan Screech
Reply #12
Replace the motor. You'll be oiling again.

Re: Atwood furnace Fan Screech
Reply #13
I will go ahead and order a replacement motor and hope I don't need to install it until the weather warms up!!!
It's too cold to be working outside on stuff like that!

  • nitehawk
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Re: Atwood furnace Fan Screech
Reply #14
Huh? I replaced the entire rear axle housing and axles on my Jeep pickup while laying outside, in the snow, in February. (Back when I was too dumb to know better) But I needed the truck for snow plowing.
Now, that was cold!!

Re: Atwood furnace Fan Screech
Reply #15
We put up with fan motor screech on start up for two years, bought a replacement fan motor and had it replaced this year in Yuma. Its a two hour job if it goes right. Releasing the shaft from the bearing is the tough part if its corroded at all...

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Re: Atwood furnace Fan Screech
Reply #16
Well the screech did not last long, even with oil. The day after ordering the replacement the screech stopped because the motor was destroyed by the play in the shaft. The excessive play in the shaft as it died destroyed the blower cage, it's...

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  • Last Edit: February 01, 2020, 07:08:27 am by "Irish"

Re: Atwood furnace Fan Screech
Reply #17
Changed my fan motor today. The combustion blower fan was not going to come off the shaft. Heated it with a grill lighter for 20 seconds, presto! Total time for the change was about 15 minutes. My large blower fan was not true and wobbled....

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