An agricultural harvester (10) includes a grain processing section (26) having a sieve assembly (48). The sieve assembly (48) is connected to mechanism (110) for producing a side to side oscillation by a single cast structural link (128) having an input through slotted openings (156) to the drive mechanism (110) to accommodate misalignment. The link (128) has vertical and horizontal flanges (140, 142) connected to a main body (136) for interconnection between the right and left frames (72, 70) and structural supports (150, 152) interconnecting the right and left frames (72, 70). The main body (136) of the link (128) extends through a slot (160) in a rubber wall (158) to accommodate the movement and seal against loss of grain.
