My alternator decided to crap out last week on my 1990 740 GLE- and I didn't really have time or a car to get a pick n pull alternator so I opted for the cheap rebuilt autozone one that doesn't come with they pulley attached. I think it's quite possible I bent the fan/pulley removing it from the old bosch, but right now I have a very squeaky/loud alternator pulley.

Anyone have thoughts on this? I'm just wondering if I either didn't tighten the nut enough (what exactly do you do to keep everything from turning as you tighten down the nut!?), or if I overlooked a spacer of some sort or I just need to take it apart and lube it all up, but people are definitely looking my way as I cruise down the street.