TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5.1-19. M15 QUADRANT MAINTENANCE INSTRUCTIONS - continued c. Assembly - continued NOTE Steps 13 through 24 apply to replacement of shouldered shaft assembly. Steps 25 through 31 apply to reinstallation of existing 13 14 15 16 17 18 19 20 shouldered shaft assembly. Slide ball socket seat (29) onto long end of new shouldered shaft assembly (30) with internal beveled portion of ball socket seat (29) positioned against bearing of shouldered shaft assembly (30). Slide spur gear (31) onto shouldered shaft assembly (30) with raised portion of gear away from bearing. Slide worm gear (32) onto shouldered shaft assembly (30) with setscrew hole of worm gear (32) facing spur gear (31). Temporarily install two setscrews to secure worm gear (32) and spur gear (31) tightly against shoulder of shouldered shaft assembly (30) until holes for tapered pins (33) are drilled and reamed. Drill and ream two holes in shouldered shaft assembly (30) for tapered pins (33). Remove setscrews and apply grease (item 6, appx B) to gears. Remove gears (31 and 32) from shouldered shaft assembly (30). Install shouldered shaft assembly (30) and ball socket seat (29) through boss on housing (10) and install gears (32 and 31) on shouldered shaft assembly (30). Aline holes in worm gear (32) and spur gear (31) with holes in shouldered shaft assembly (30) and install two tapered pins (33). 5.1-42 Change 1