R108285: Draft Link BumperThe sway blocks and bumpers are designed as wear parts to not only keep the hitch in a tightly centered position in relation to the tractor, but also to protect the drawbar support and rear casting from side to side impact. Replacement of these wear parts is critical for proper 3 point hitch alignment and to keep implements from wandering. Symptoms of worn out sway and bumper blocks: 1. Excessive play of the rear hitch and loud clanging. 2. GPS