How do you change a water pump on a 1992 Nissan Pulsar hatchback?

To change the water pump on a 1992 Nissan Pulsar hatchback, first, disconnect the battery and drain the coolant. Remove the serpentine belt and any components obstructing access to the water pump, such as the timing cover. Unbolt the old water pump, clean the mounting surface, and install the new pump with a new gasket. Reassemble the components, refill the coolant, and reconnect the battery before starting the engine to check for leaks.