TM 9-2320-209-20-3-3 c. Replacement. FRAME 1 1. Hold box (1) up near wall (2) and pull four wires (3) through hole in rear of box . Pull wire (4) through hole in side of box. 2. Hold box (1) in place on wall (2) with conduit nipple (5) in hole in side of box and aline screw holes. 3. Using ratchet, extension, socket wrench, and 7/16-inch wrench, screw in and tighten two screws (6) and two nuts (7). 4. Screw bushing and conduit locknut (8) on conduit nipple (5) as shown. 5. Using hammer and punch, tighten conduit locknut (8). GO TO FRAME 2 18-377