TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P Item No. Item To Be Inspected Procedures 6 CORRECTION COUNTER Check light sources. Check that light is present and even throughout the correction counter. Check that correction counter numbers are clear and legible and that total excursion registers a minimum of 50 mils at each stop. 7 ELEVATION COUNTER Check light sources. Check that light is present and even throughout the elevation counter. Check that elevation counter numbers are clear and legible and register at least 1383 at maximum elevation and not more than 9772 at maximum depression. 8 CROSS LEVEL KNOB Operate cross-level knob. Check that operation is smooth without binding or rough motion and that no more than 8 pound-inches (0.904 N-m) of torque is required to rotate it. Change 1 5.1-5