Leave the belt on to help hold the Pully, The fan Clutch Nut is Left Hand Threds use a cressent wrench and wack it with something / Hammer, The water pump has Two threded extraction holes tapped in the housing. Be ''Carefull'' not to cock it, must come out stright cause it will get in a bined spray some kinde of liquid wrench in the gap to loosen any corrosion & O-Ring. Good Luck!