TM 9-2320-209-20-3-3 b. Replacement. FRAME 1 1. Put discharge valve operating lever (1) in place, feeding four cables (2) through guides (3). 2. Using 7/16-inch wrenches, screw in and tighten eight bolts (4) and eight nuts (5). 3. Using 3/4-inch wrench, screw on and tighten four coupling nuts (6). GO TO FRAME 2 18-136