mhayek

My car went into a ditch and engine went partially under water. I changed oil and filter, tranny fluid, replaced alternator cuz it got wet. Works ok but I hear a "whir" from the right side of engine and my guess is the AC compressor bearing. Dealer says $250 for clutch/pulley/bearing assembly. Can I pull pulley and press out/replace bearing? I see ebay has OEM (NSK) bearing for $30 but before I buy it I wanted someone with knowledge in this area.

ezone

It isn't real tough to get the pulley off to replace it if you have the tools and know what you are doing. It can be a bear if the compressor has a lot of age and corrosion on the hub though.
I don't even have to discharge the system to replace the clutch set. I do it all with the compressor still attached on most. Occasionally I have to unbolt the compressor for access, but I try like hell to do the work without having to discharge the system.

But I have never tried to change ONLY its bearing.

Pull it off, take it to a press, try it?
The worst you can do is ruin it, and you already needed the new one.