How do you replace water pump on B3000 Mazda pickup truck?

To replace the water pump on a Mazda B3000 pickup truck, first, disconnect the negative battery cable and drain the coolant from the radiator. Next, remove any components obstructing access to the water pump, such as the serpentine belt and timing cover. Unbolt the old water pump from the engine block, clean the mating surfaces, and install the new water pump with a new gasket. Finally, reassemble everything, refill the coolant, and reconnect the battery.