New vibration passport fan and air

[tomc]

I took my 2012 Passport out of storage and was unwinterizing it. Turned on the fan and or the air and it shakes the whole camper. Was fine last year. Took off the inside cover and the squirrel fan seems fine. What do I look for??

[LHaven]

With a small tool hook, gently pull each vane on the squirrel cage and look for invisible breaks. A broken vane bends outward at operating speed, unbalancing the unit and causing quite a racket. I had this happen last year on my furnace fan.

[dwall]

Also check for dirt dobber nest on blade.

[Customer1]

Air conditioner what you are talking about? Go on the roof and remove the shroud, the problem will probably be obvious. Watch out for nasty things that want to sting you.