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TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download

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TM 9-2350-311-10 2–12 PREPARATION FOR FIRING — CONTINUED 2-12.2 Boresighting — Continued g. Boresighting — Distant Aiming Point Method — Continued 8 9 10 NOTE Make sure you have done steps 1 through 3. In order to prevent damage to M118A2/M118A3 elbow telescope, stow against upper stop when not in use. Do not use as a handhold under any circumstances. Turn wormshaft assembly knob (39) to center bubble in level vial (40). Rotate deflection knob (22) and elevation knob (23) to lay M118A2/M118A3 elbow telescope (32) reticle on the upper left-hand corner of distant aiming point (38). Without moving deflection knob (22) and elevation knob (23), set M146 telescope mount (24) elevation dial (25) and deflection scale dial (26) to elevation 4, azimuth 4. Check to be sure sight picture did not move when elevation dial and deflection scale dial were set to 4. Weapon is now boresighted. M118A2/M118A3 ELBOW TELESCOPE RETICLE 2-192