This elevator chain transfers crop material from the header or pickup into the threshing mechanism. It runs on sprockets at the top and bottom of the elevator housing, carrying flights that move the crop mat upward. A worn or stretched chain causes flight misalignment, leading to material bunching or plugging at the elevator throat. The chain is constructed to the original pitch and link count, so it maintains proper engagement with the drive sprocket and tensioner without requiring shimming or modification. On installation, verify the chain tension and align the flights perpendicular to the housing sides.