This V-belt transmits power from the engine to the cleaning fan and sieve drive on a combine harvester. It sits in the sheave grooves on the cleaning-system pulley train, maintaining the correct tension to keep the fan and sieves operating at their designed speed. A worn or slipping belt reduces cleaning airflow and sieve agitation, leading to poor grain separation and increased losses. This belt is manufactured by Gates to match the original cross-section and effective length, so it seats properly in the pulley grooves without requiring shimming or adjustment beyond standard tensioning. On installation, check that the belt runs true in all sheaves and tension it to the manufacturer's specification.