A combine side-shaking control system (400, 600) that includes a sieve (402) for separating crop material from other material, located in a plane having an X dimension and a Y dimension and configured to move in a fore-aft direction in the X dimension, in a side-to-side direction in the Y dimension and in an up-down direction in a Z dimension. The system also includes a side-shaking assembly (406, 602) configured to move the sieve (402) in the side-to-side direction in the Y dimension. The fixed arm (410) is attached to the sieve (402) and configured to move with the sieve (402) in (i) the fore-aft direction in the X dimension, (ii) the side-to-side direction in the Y dimension and (iii) the up-down direction in the Z dimension. The side-shaking coupling portion (604) comprises a moving portion (606) configured to move in a diagonal direction having a fore-aft component in the X dimension and an up-down component in the Z dimension.
