Clean mating surfaces of water pump housing and engine block as necessary.Place new O-ring in groove in water pump housing. Install water pump and retaining bolts. Torque bolts to 24 N·m (212 in. lbs.).Install both inner and outer timing belt covers (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) - INSTALLATION).Refill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).Connect negative battery cable.