Engines are held in place with a series of Engine Mounts. These support the weight of the assembly and reduce vibrations when accelerating or slowing down. A similar role is assigned to the Balance Shaft to effectively cancel out jolting or shaking from pistons moving at high speeds. If left unchecked, worn mounts or faulty balancers can lead to wear in the various Crankshaft Components, particularly the crank hubs that control timing in the valves and other Camshaft Parts that ensure smooth power delivery.