A bevel gear drive arrangement for a grain conveyor of an agricultural harvester (100), wherein the agricultural harvester (100) comprises a chassis (102), wheels (104), a grain tank (118), and a grain elevator (114, 116), the bevel gear drive arrangement comprising a frame (408) a first shaft (406) supported on a first bearing (532) a first bevel gear (404) fixed to the first shaft (406) a second shaft (400) a second bevel gear (402) fixed to the second shaft (400), wherein the second shaft (400) is translatable along its axis (510) to a plurality of operating positions with respect to the frame (408).