TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
Page 158 of 344
TM 9-1240-400-34&P 5-5. CATEGORIES OF INSPECTION (CONT). Table 5-1. INITIAL INSPECTION-Mi37 TELESCOPE MOUNT (CONT) ITEM NO. ITEM T0 BE INSPECTED PROCEDURE 8 Elevation Counter Operate mount through 1333 mils elevation and minus 89 mils depression. Counter must be accurate within 0.5 mils as read on the gunner’s quadrant. Counter numbers must be alined within 1/6 in. (1.59 mm). 9 Correction Counter Counter must add or subtract an equal number of mils (5 and 9) from the elevation counter. The correction counter must be accurate within 0.2 mil at the plus and minus 2, 5, and 9 mil settings. Counter numbers must be alined within 1/16 in. (1.59 mm). 10, 11 Elevation and Cross-Level Elevation bubble and cross-level bubble must be Vials centered within 1 graduation for each vial. 12 Lights Must illuminate sufficiently to clearly define markings on counters and level vials. 5-4