PAS pump pulley wheel disintegrates !!!

[steveshutt]

Anyone heard of this happening before. I now have a pulley wheel, who's middle has been ripped out.
anyone know how it could happen.
Could a new fan belt that was overtight cause this, along with a kink in the pipe going from the pump to the steering rack, causing additional pressure on the pump. SEems incredible that the pulley wheel could get twisted and sheered off its mounting bolts.