Water Pump

Disconnect the battery and then drain the coolant.  Remove the serpentine belt from the pump's pully and then remove the hoses from the pump. Remove the bolts holding the pump in place and then remove the gasket and any remaining residue from the gasket from around the block...be thorough here, as any pieces of the gasket getting into the engine block can cause you problems later that you don't want to deal with. Re-install the pump in the exact opposite manner as removal, using a new o-ring in the pressure fitting on the hose, and tighten all bolts accordingly. You should be good for another 100,000 miles now! Well, how about we know the engine first.. say 4cyl, 2.3L car has to be on jack stands, 2 bolts from the bottom, plus the tensioner, 1 bolt from the top, have to have small hands, long extension socket, check your manual or fix it book. Good luck