An agricultural vehicle includes a chassis； a threshing and separating assembly carried by the chassis； and a cleaning system carried by the chassis and configured to receive crop material that has passed through the threshing and separating assembly. The cleaning system includes a pan configured to receive crop material from the threshing and separating assembly on a pan surface and to shake in a fore-to-aft direction； at least one sieve located below the pan and configured to shake in fore-to-aft and lateral directions, the sieve including a sieve surface configured to receive crop material from the pan； and at least one divider associated with and extending at least 3 centimeters above at least one of the pan surface and the sieve surface.
