TM 9-2320-209-20-3-3 c. Replacement. FRAME 1 1. Put gasket (1) in place on six screws (2). 2. Put gasket (3) on end of tube (4). 3. Put discharge valve (5) in place on six screws (2). Make sure it is pointing to tube (4). Using 3/4-inch wrench, screw on and tighten six nuts (6). GO TO FRAME 2 18-70