water pump belt problem

i was out crusing tonight and my new belt just popped off and over heated of corse. has any one had this happen before, nothing looks bent to the point where the belt came off i put a thicker belt that a car buddy gave to me and got home and it seems to be ok just weird the alt. pully looks like a bigger v then crank and water pump jw seems to be fixed just one of those thing that makes me scratch my head.

thanks matt
Author: admin