My serpentine belt was due for replacing so I installed a new Motorcraft belt, and while the old belt was off I spent some time spinning the pullies to find that it was my alternator that was squeeking so badly in the winter or when it was cold.

What should I do? Is there a bearing rebuild kit or can I just oil up the stock bearings? Any help appreciated!

 

If it were my truck, I would replace the alternator. Bearing is sealed.

 

If it were mine, I'd find a local expert to rebuilt it...

 

Alright thanks guys, I will get a rebuild done this summer!