TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 1 2 Install M15 quadrant on cross-leveling fixture (ref. Section a, para 5.1-24). Perform steps 7 thru 9 of fixture setup procedure (ref. Section a, para 5.1-24). Turn spur gear (1) until correction counters register 00 mils. Turn elevation handwheel (2) until elevation counter registers 0000 mils. 3 4 5 Adjust elevation handwheel (2) to center bubble of fire control level (3). Loosen three screws (4) to disengage differential spur gear (5) from spur gear (6). Rotate differential spur gear (5) to zero counter, then tighten three screws (4). Change 1 5.1-67