The large pulley seemed like it broke away on the outside leaving some rubber behind. I am wondering what would make that happen hopefully not a lock up of any sort. The motor did start chirping this week like a bird so I was thinking waterpump? I will look into now this morning and maybe turn the motor over once I get the broken pulley out of the way.

Would it be smart to replace the pulley with billit style pulleys now that it's off or original parts..?