The invention concerns the discharge arrangement of an agricultural harvesting machine with a lower ejection tower connected to the frame of the harvesting machine and an ejection elbow that includes the outlet end of the discharge arrangement supported in bearings, free to rotate, relative to the ejection tower by a slewing rim about a substantially vertical axis of rotation. A removable intermediate element is removably inserted between the ejection tower and the ejection elbow, the surface of the intermediate element that is in contact with the ejection tower and the surface in contact with the slewing rim extend at an angle to each other.