TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 7 Remove four screws (5), four lockwashers (6), four flat washers (7), and rotating counter (2) from base (4). 8 Drill spur gear (1) and shaft of rotating counter (2) and install straight pin (9). 9 Position rotating counter (2) on base (4). Install but do not tighten four screws (5), four lockwashers (6), and four washers (7). 10 Aline holes of rotating counter (2) with holes in bass (4). Install two straight pins (3) and tighten four screws (5). 11 Remove setscrew temporarily installed in spur gear (1) and apply grease (item 6, appx B) to spur gear (1). NOTE If elevation counter is to be reinstalled, perform steps 12 thru 14. 12 Aline holes of spur gear (1) to holes in shaft of rotating counter (2) and install straight pin (9). 13 Apply grease (item 6, appx B) to spur gear (1) and position rotating counter (2) over two straight pins (3) on base (4). 14 Install four screws (5), four new lockwashers (6), and four washers (7). Change 1 5.1-51