TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5.1-24. M15 QUADRANT FINAL INSPECTION AND ADJUSTMENT - continued c. BAR (GUNNER’S QUADRANT SEAT) FINAL ADJUSTMENT 1 2 3 4 5 6 Ensure that bar (1) is installed on M15 quadrant with one straight pin (2). Ensure that spring (3) and screw (4) have been installed. Place known good gunner’s quadrant on machined quadrant seats of bar (1) and adjust screw (4) until bubble of gunner’s quadrant is centered. Using feeler gage between housing and bar (1), determine the number of shims (item 19, appx B) necessary to hold bar in place for drilling and reaming for straight pin (2). Install shims as necessary between bar (1) and housing and tighten screw (4) to secure bar (1) for drilling. Remove M15 quadrant from cross-leveling fixture. 5.1-64 Change 1