TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P c. Assembly 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Apply grease (item 6, appx B) to large diameter of gear shaft (1). Apply grease (item 7, appx B) to new preformed packing (2) and install into groove on gear shaft (1). Apply grease (item 6, appx B) to shaft of gear shaft (1) and to 12 key washers (3). With keys facing away from gear, install 12 key washers (3) and flat washer (4) on gear shaft (1). If removed, install headed straight pin (5) into detent plate (6). Apply grease (item 6, appx B) to surface of detent plate (6) where ball (7) rides. Install gear shaft (1) and related parts into detent plate (6). Install new preformed mechanical felt (8) into groove of detent plate (6). Apply lubricating oil (item 9, appx B) to preformed mechanical felt (8). Apply grease (item 6, appx B) to spring (9) and install in knob (10). Apply grease (item 6, appx B) to detents of detent plate (6) and install ball (7) in one of the detents. Aline spring (9) with ball (7) placed in detent of detent plate (6). Aline hole in gear shaft (2) with hole in knob (10) and install headless grooved pin (11). Rotate knob (10) clockwise, then counterclockwise from stop to stop to ensure that stops are engaging. Install two setscrews into detent plate (6). Do not tighten. Change 1 5.1-25