TM 9-2320-209-20-3-3 d. Disassembly of Seat Assembly. FRAME 1 1. Using 9/16-inch socket wrench, hold machine screw (1) at each of five channels (2). Using 1/2-inch wrench, unscrew and take off five self locking nuts (3). Take away screws and five legs (4). GO TO FRAME 2 18-58