Sector Shaft Preload
Disconnect center link from steering gear arm. Start engine and run at idle. Turn steering wheel from lock-to-lock, counting number of turns, and then turn back halfway to center position. Loosen adjusting screw until backlash is just felt in steering gear arm. Tighten adjusting screw until backlash just disappears, then turn adjusting screw 3/8-1/2 turn more. Tighten lock nut.