You need to drain the coolant from the radiator, remove the upper fan shroud, the drive belt and the fan, the fan clutch, and the pulley from the coolant pump. Disconnect the radiator outlet hose from the coolant pump, the heater hose from the coolant pump, and the bypass hose. Then you can remove the
Water Pump bolts and the coolant pump from the engine block and clean the mating surfaces on the coolant pump and the engine block.