This repair insert is a flat steel plate used to restore the worn surface of a walker assembly in a grain harvester. It is installed on the walker bed, where the oscillating motion separates grain from the straw mat. Over time, the original walker surface wears thin from constant abrasion, leading to grain loss through perforations or structural failure. This insert is welded or bolted into place to rebuild the contact area, restoring the original clearance and separation efficiency. On installation, ensure the insert lies flat against the existing walker frame and that all fasteners are torqued to the specification for the host machine.