How do you change water pump on peugeot 306td?

To change the water pump on a Peugeot 306 TD, first, ensure the engine is cool and disconnect the battery. Drain the coolant, then remove the timing belt cover and the timing belt by loosening the tensioner. Detach the old water pump from the engine, clean the mounting surface, and install the new pump with a new gasket. Finally, reassemble the timing belt, cover, refill the coolant, and reconnect the battery.