TM 9-2320-209-20-3-2 c. Replacement. FRAME 1 1. Using adjustable wrench, screw in and tighten tee fitting (1). 2. Using 7/16-inch wrench, screw in and tighten straight fitting (2). 3. Using 3/16-inch allen wrench, screw in and tighten pipe plug (3). GO TO FRAME 2 13-262