Mazda Protege5 2003 a/c works well but is squealing. The noise changes when turning a/c on and off. The belt is new. So I'm checking the a/c pulley's bearing.
When a/c clutch is not engaged (a/c off), the pulley does not spin freely by hand like in this video or this video. It spins but there is great resistant. Is it because of bad bearing? I could not find any video showing that bad bearing makes hard to spin, can somebody also link a video?