TM 9-2320-209-20-3-2 c. Replacement. FRAME 1 1. 2. 3. NOTE Some trucks will have bracket (1) and male elbow (2). Other trucks will not have bracket and will have female elbow. Using 1 1/4-inch wrench, hold nipple (3). Using 1 3/8-inch wrench, screw on and tighten valve (4). Using 1 3/8-inch wrench, hold valve (4). Using pipe wrench, screw on and tighten elbow (2) as noted. Put valve assembly (4) in place as shown. GO TO FRAME 2 13-273