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 49A7-3-72/74 3-7. TEST AND ADJUSTMENT PROCEDURES (cont). BACKLASH IN ORIENTING WORM (cont) 18 19 20 21 22 Install adapter (14) on orienting knob. Install 0 to 80 in.-oz torque wrench (15) on adapter and check for a running torque of 24.00 to 48.00 in.-oz (0.17 to 0.34 N-m). Remove torque wrench and adapter. If torque is out of tolerance, repeat steps 7 thru 20 and recheck torque. Fill setscrew holes with sealing compound (item 8, appx D). ELEVATION STOP MECHANISM 1 2 3 4 5 Bring elbow telescope reticle into coinci- dence with test target (fig. E-6, appx E). Set all scales, indexes, and micrometers to zero. Rotate elevation micrometer knob (1) to elevate elbow telescope to limit of stop rings. Elbow telescope must not touch housing cover (2). Reading on aiming circle elevation scale and micrometer must beat least 1130 roils above horizontal. Rotate elevation micrometer knob (1) to depress elbow telescope to limit of stop rings. Elbow telescope must not touch housing cover (2). Reading on aiming circle elevation scale and micrometer must be at least 430 roils below horizontal. If conditions of steps 3 and 4 above can- not be met, proceed to steps 6 thru 17. 3-44