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TM-9-1290-262-24&P Technical Manual for M2A2 Aiming Circle Download

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ARMY TM 9-1290-262-24&P MARINE CORPS TM 00476C-24&P AIR FORCE TO 49A7-3-7174 ADJUSTMENT OF TARGET Adjust position of the test target (fig. E-6, appx E) until its vertical (1) and horizontal (2) crosslines coincide with reticle lines on the aim- ing circle. BACKLASH IN ELEVATION WORM 1 2 3 4 5 NOTE During setup, the aiming circle line of sight should be directed toward the test target. While sighting through elbow telescope eyepiece (1), rotate elevation knob (2) to superimpose aiming circle horizontal reticle line on test target horizontal line. Record reading of elevation micrometer scale (3). Rotate elevation knob (2) two full turns clockwise. Rotate elevation knob (2) counterclockwise to record reading without overtravel. Sight through elbow telescope. Error be- tween aiming circle horizontal reticle and test target horizontal line should not ex- ceed 0.6 roil. If tolerance is proceed to steps 6 thru 17. met, proceed to torque test, exceeded, If tolerance is page 3-39. 3-37