TM 10-3930-669-34 (3) Loosen bezel lock. (4) Turn   bezel   until   zero   is   aligned   with   pointer. Tighten bezel lock. (5) Place mark (15) on pulley (7) at the point indicated by the pointer. (6) Using retainer, turn pulley (7) to the right one half rotation. (7) Using retainer, turn pulley (7) to the left until the dial gauge pointer begins to move. 3-13