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originally posted by: lordcomac
a reply to: worldstarcountry
When those bearings go, they'll either seize, or blow apart.
Either way, you're getting a tow home. It will inevitably happen at the most inconvenient time.
If they seize, the belt will probably be destroyed before you cut the engine.
There's a chance you can just replace the bearings in the alt, but you'll most likely need to take it apart to figure out what bearings it takes... might not be worth the effort.
If you're broke, check out a junkyard for a replacement alt.
originally posted by: CharlesT
All of the above. Don't wait.
Remove the serpentine belt and spin the alternator. You can feel for rough bearings or even hear them if you spin it fast. If it doesn't spin smoothly, get it repaired or replaced.