TM 9-2320-209-10-1 FRAME 11 1. Unhook end of boom chains (1) from boom chain brackets (2). 2. Turn trunion (3) to unlock it. 3. Take trunion (3) out of yoke of each of both gin poles (4). 4. Take ring ends of both boom chains (5) off ends of trunion (3). GO TO FRAME 12 4-288