TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P ELEVATION LOCKING TORQUE 1 Using torque wrench with torque adapter (figure 3, appx D), check torque resistance of lever (1). A torque of 15.00 in.-lb (1.69 N-m), applied counterclockwise, shall not move lever from the detent position. 2 With lever (1) in detent position, use torque adapter (figure 1, appx D) with torque wrench to apply a torque of 5.00 in.-lb (0.56 N-m) to worm (2). The line of sight of the collimator telescope (3) shall not change. ELEVATION ADJUSTING RANGE 1 Turn lever (1) clockwise to pin (2) to release worm (3). 2 Rotate worm (3) to elevate and depress collimator telescope (4) at least 25 degrees (444.45 mils) as measured by gunner’s quadrant (5), held by hand on parallel bar on top of locking clamp (6). 4-27