TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Remove four cap screws (9) and four lockwashers (10). Discard lockwashers. Separate lower housing (11) from upper housing (12). Remove and discard preformed packing (13). Remove headless straight pin (14), only if dam- aged. Remove headless straight pin (15), only if alarm aged. NOTE Steps 15 through 19 refer to M117 panoramic telescope only. Remove cap (16). Remove contact assembly (17). Remove cap (18). Remove retaining ring (19). Remove bushing insulator (20), grooved pin (21). and wire (22). Remove plug (23) and spring (24). Using adjustable spanner wrench, remove threaded ring (25) with worm shaft (26) and related parts attached. Remove plunger (27). Position worm shaft (26) on V-block and remove tapered pin (28) and gear (29). Remove threaded ring (25), spring (30), and two flat washers (31 and 32) from worm shaft (26). Remove setscrew (33), self-locking nut (34), and ring spacer (35). Discard self-locking nut. Remove self-alining bearing (36). Remove preformed packing (37) from threaded ring (25) and discard. 5-27