TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 6 Place zeroed gunner’s quadrant (7), with end-for- end correction applied, on quadrant seats (8) of M15 quadrant. 7 Center bubble on gunner’s quadrant. 8 Recheck to be sure that bubble of fire control level (3) is in agreement with bubble in gunner’s quadrant (7). 9 If fire control level (3) does not agree with gunners quadrant (7), loosen ring (9) and readjust eccentric bushing (10) until fire control level (3) and gunner’s quadrant (7) agree. 10 Tighten ring (9) and seal with adhesive (item 1.1, appx B). 11 Using suitable clamp, secure 6-inch parallel bar on surface A perpendicular to bar (gunner’s quadrant seat). 12 Place zeroed gunner’s quadrant (7), with end-for- end correction applied, on parallel bar. 13 Turn cross-level knob (11) until bubble of gunner’s quadrant (7) is centered. 14 Using fabricated eccentric tool (fig. C-2, appx C), loosen ring (12) and adjust eccentric bushing (13) until bubble in fire control level (14) centers. 15 Tighten ring (12) and seal with adhesive (item 1.1, appx B). 16 Remove 6-inch parallel bar and cross-level knob (11). Change 1 5.1-33