This V-belt drives the cleaning fan or shaker mechanism on a combine harvester. It transmits power from the drive pulley to the cleaning-system input, maintaining the rotational speed needed for proper grain separation. A worn or stretched belt slips under load, reducing cleaning-fan speed and leading to incomplete separation or material loss out the rear of the machine. This belt is manufactured to the original cross-section and length specification, so it seats correctly in the pulley grooves without requiring tensioner adjustment beyond the standard range.