John Deere 3-point hitch parts diagram and troubleshooting guide. Crooked, loose, or missing something? A John Deere 3-point hitch diagram is where to begin. It shows how the linkage should be put together and where things go wrong. The main parts include the center link, lower lift arms, lift links, sway links or turnbuckles, and rockshaft linkage. The center link sets implement angle. Lower arms carry the load. Lift links level the implement side to side. Sway links limit side movement. If the implement leans, check the lift link. If it tips forward or back, adjust the center link. If it sways too much, check the turnbuckles. Slow lift or no lift often points to the hydraulic side or rockshaft linkage.