TM 9-2320-209-20-3-4 b. Replacement. FRAME 1 1. Slide headlight guard (1) on screw (2). 2. Put headlight guard (1) in place in brush guard (3). 3. Aline holes in headlight guard (1) with holes in brush guard (3). 4. Put two screws (4) through holes in headlight guard (1) and brush guard (3) 5. Using 9/16-inch wrench, screw on two nuts (5). 6. Using 9/16-inch wrenches, hold two screws (4) and tighten two nuts (5). 7. Using 3/4-inch wrenches, hold screws (2) and screw on and tighten nut (6). END OF TASK 20-3/(20-4 blank)