This V-belt transmits power from the engine to the threshing mechanism on the host combine. It sits on the pulley set that drives the threshing drum and related rotating assemblies. A worn or slipping belt reduces drum speed, leading to incomplete grain separation and increased losses. The belt is constructed by Gates to match the original cross-section and pitch length, which keeps the tension within the design range of the tensioner system. On installation, verify the belt sits fully in the pulley grooves and adjust the tensioner to the specified deflection.