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TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download

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TM 9-1240-400-34&P SETTING UP AND ADJUSTING CROSS-LEVELING FIXTURE 1 Secure cross-leveling fixture (1) on a solid stand bolted to the floor. 2 Place precision level (2) on square shaft (3), perpendicular to axis of rotation, and center bubble. 3 Place precision level (2) on square shaft (3), parallel to axis of rotation. 4 Set cant vernier scale (4) and elevation vernier scale (5) to "0". 5 Install test fixture adapter (6) on cross-leveling shaft end (7). Make sure adapter keys (8) are parallel to top of square shaft (3) within 0.1 mil. 6 Tighten setscrew (9) lightly. 5-53