This rubber cover shields the cleaning-system components from crop debris and dust during operation. It mounts over the cleaning-shoe assembly, where it prevents material ingress that could interfere with the movement of the sieves and the airflow from the cleaning fan. A torn or missing cover allows chaff and grain to accumulate on moving parts, leading to uneven cleaning and increased wear on the linkage. The cover is formed to match the contour of the housing and includes pre-cut openings for the fastening points. On reinstallation, ensure the cover is seated fully and that all retaining hardware is tightened evenly to avoid gaps.