This V-belt transmits power from the engine to the hydraulic pump in the drive system of a grain harvester. It runs in a single-groove pulley arrangement and drives the pump that supplies pressurized fluid to the machine’s hydraulic circuits. A worn or slipping belt reduces pump output, causing slow or weak operation of the header lift, reel drive, and other hydraulic functions. The belt is manufactured by Gates to match the original cross-section and length specifications, ensuring correct tension and pulley contact without the need for shimming or adapter pulleys. When replacing, verify the belt is seated fully in the pulley groove and adjust tension to the manufacturer’s specification.