Evidently the shaft breaks off from the impeller. If you can pull the pulley out, think that's proof that the pump is done.
Only other really low odds chance is that someone had the belts off recently and put them on the wrong way...like I said...low odds, but it's happened before.
Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840
A recent set