TM 9-2320-209-10-1 FRAME 2 1. Put trunion (1) through ring ends (2) of both boom chains. 2. Put trunion (1) through yoke ends (3) of both gin poles. 3. Turn trunion (1) until it locks into place. 4. Lock hook end of boom chains (4) into boom chain bracket (5), thirty links from hook. NOTE Chain lengths must be the same. GO TO FRAME 3 4-272