A/C fan motor

[bill-karen]

Has anyone replaced the fan motor in the A/C unit?



Mine is vibrating bad , Shaking the whole unit. I took off the shroud to see if anything was interferring with the fan; but found nothing. When I touch the fan motorit's vibrating like it's out of balance.I think the problemmight bethe motor bearings. It doesn't seem to be too bad of a job to replace the motor.



Anyone out there have a problem like this?





Bill

[mwebber78]

Looks like a bolt on/off job when i was cleaning mine (Dometic). Sure there isn't a small nest on the underside of the blades or shaft? Did you check to see if the motor itself is loose?

[Hunter11]

You sure there is not something stuck to one of the fan blades like a dirt duabers nest or something making it out of balance? I would think it would be a fairly easy job to replace the fan motor if that is what it is. You could probably get a replacement at Grainger or an online source.

[fhenn]

I am with every body else check for a nest underneath the blades

[Chrisnan23]

The other thing to chck is the screw that holds the fan to the shaft. Make sure it is on the flat and tight.

[CamperBob]

+1 Check for critters.

Reminds me of the night that a mouse ended up in the squirrel cage fan of my Terry's furnace. It shook so bad that I thought the damn thing was going to blow up. The next day when I found the mouse it was dead...not sure if it was from dizziness, the excessive G forces or the sail switch he bent during his ride.

[bill-karen]

Well turns out it was critters. Your replys made me look closer.

Mud daupper nest. Not on the fan blades but on the front face of the fan.



When I first looked at it, I couldn't see the front face of the fan so I just looked at the fan blades on the outside and the squirrel cage on the inside. Well turns out a big mud daupper nest on the front face covering half the face, thus the unbalance. The only way I found it is by feeling the front face of the fanbecause you can't see it.



I think I'm going to get some #8 screening (1/8" mesh) and attach it to the inside of the A/C shroud. It's a Duo-therm unit .When I first took off the shroud , there was 4 wasp nests that I sprayed. Yes I got stung twice before I could get off the roof. Now with the mud daupper nest, I need to do something to prevent the critters from setting up home in my A/C unit.



Thanks everyone for your replys, you saved me both time and money.





Bill