Tensioners maintain correct tension on the belt to prevent slippage and ensure an efficient operation.Belts are described as flexible bands that transfer power to pulleys.They transmit power from one area to another. Pulleys, which are circular devices that have belts that are looped around them.V belt diagrams demonstrate how multiple V-shaped belts are placed in older engines, or in other systems that are specialized.This ensures that the engine's timing is correct. Timing diagrams demonstrate how a timing belt connects to the crankshaft.Serpentine diagrams are used for a single belt that is used to drive multiple devices such as an alternator or power steering pump or an air cooling compressor.This is helpful to mechanics, engineers as well as DIY-lovers who are working on HVAC, engines, or any other belt-driven equipment. They illustrate the arrangement of belts around various parts. John Deere Lt180 Belt Diagram - Belt diagrams assist you in understanding how belts are organized within various mechanical systems.