This V-belt transmits power from the engine to the hydraulic pump and drive components within the combine harvester. It sits in the pulley groove and relies on wedge friction to transfer torque without slipping. A worn or stretched belt causes reduced hydraulic flow and slower drive speeds, which can lead to uneven threshing or material handling. The manufacturer machines the belt to the original cross-section profile so it seats fully in the pulley groove and maintains the correct tension range. On installation, check pulley alignment and adjust tension to the specified deflection.