ac making strange noise

[rthibodaux]

The bedroom ac cools great but makes a noise like something is flapping inside the unit. It hard to explain but it not squealing like a bad bearing. It just started on our last trip. We used it for 10 days . It loud enough to wake you up when it kicks on.
thanks

[poohbear]

Blower wheel clamp could have loosened allowing wheel to move maybe hitting chassis.
I just replaced my main AC motor ( 10 yr old Coleman 15000 BTU) which was makeing kind of a banging noise and that was bearings. It's a Fasco D1095 & most HVAC supply house have a source, way cheaper than rv dealers. May be same motor on the 13k , but I don't know