replace power steering belt, what has to come off on 1994 Pontiac Grand Am

the belt is showing wear and needs to be replaced

Asked by for the 1994 Pontiac Grand Am
Please check the repair information available from AutoZone. There website is www.autozone.com.
2 answers
i need to know if the screw that goes in to the pully is a screw or a nut cause it broke an i cant tell