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Old 11-11-2015, 09:08 AM   #1
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Is a/c fan bearing easy to replace?

started to use heat pump. the front a/c fan (duo-thermo) is smooth and quiet but the bedroom fan has a louder and an uneven whining sound. could the bearing be worn? has anyone replace the bearing diy and how hard is it?

thoughts are welcome.
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Old 11-11-2015, 10:54 AM   #2
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No sir, you replace the whole motor in most cases.
Opening up the motor is like opening up a can of live worms.
I'm not sure if you can even find the bearing for sale.
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Old 11-11-2015, 10:56 AM   #3
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Replacing the assembly isn't hard at all for the typical DIY'er.
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Old 11-11-2015, 11:05 AM   #4
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thanks dan for the quick info. if need be, i should be able to replace the whole assembly by diy
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Old 11-11-2015, 12:15 PM   #5
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Mine front AC was doing the same thing last year. It was louder and had a harmonic type sound. It also started to kick the breaker upon startup.

After we got back from a trip in Sept I decided to take a look. I took the shroud off and could barely turn the motor by hand. I also found that the squirrel cage fan blade was actually hitting the sheet metal.

When I pulled the fan motor off/out I found that the small rubber bushings that support the fan motor had worn to the point that it let the motor sit lower causing it to hit the metal. You don't have to completely take out the entire assembly, I was able to unscrew the set screw that held the front blower unit on and just slipped the motor off of it. This saved me tearing apart the house side of the AC unit. I also found that the motor bearings could not be replaced, they were sealed into the end casing of the motor assembly.

I went to this site to find the correct part number
https://edometic.com/allusr/sp.nsf/spc?ReadForm

Enter the model # of the AC unit and it will bring up a parts list/diagram. You can then find the part you are looking for. NO guessing.

I then did a search on the internet for a replacement. I found an open box special at Adventure RV for ~$110 including shipping.

In all it took me about 4 hours to fix but considering what a new unit cost it's worth if for a DIY. Besides, I've read that newer units are failing quickly, there has been some sort of production problem.
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Old 11-11-2015, 12:38 PM   #6
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Big thanks Jim!! Your info is exactly what I was looking for!!
I will climb up and check it out. it might well be the exact cause.

Happy trails!!
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Old 11-11-2015, 02:41 PM   #7
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Countryfit

Here is the part that I ordered,
Dometic Penguin Motor kit with Cap Bracket - $115.95

Mine was an open box special (returned) and cost $80 + tax + shipping, came to $103.

One other thing you should check for is to make sure there are not mud dabber nests in the squirrel cage fan blade, this could cause it to be unbalanced.

Good Luck and send me a PM if you need more advice.
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Old 11-11-2015, 04:09 PM   #8
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thank you again Jim!!
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