The cam and the fuel injection pump drive systems are considered as a critical chain drive systems in the engine, typically these chains are maintaining the ignition timing in the engine and generally classified as Timing chain. The timing chain which drives the cam shaft is transmitting power from the crank shaft to the cam shaft. Similarly the chain drives the fuel injection pumps transmitting power fro the crank shaft to the fuel injection pump shaft. Few applications a single chain transmits power to the number of driven systems such as cam, fuel injection pump and the oil pump