The timing chain functions just as that a timing belt does. The difference between the two is merely the material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were used first, belts were presented into automobiles in the 1960s. Belts are quieter and due to their material, less expensive to create. Timing chains are housed within the engine and receive lubrication from engine essential oil and can last a considerably long time, while timing belts can be found outside of the engine and tend to dry out and crack. Within the last few years, however, more automobile manufacturers have integrated timing chains back into some timing chain china vehicles with vast improvements such as a reduction in noise and 
vibrations, different a timing belt not all drinking water pumps are powered by the timing chain. Examine your owner’s manual to determine what kind of timing operation your vehicle utilizes because they can vary greatly from year to calendar year and by a car manufacturer.