TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 3-13. EYEPIECE AND ERECTOR LENS SUBASSEMBLY MAINTENANCE INSTRUCTIONS - continued a. Disassembly 1 2 3 4 5 6 7 8 9 10 11 12 13 Remove retaining ring (1) and flat washer (2) from manual control lever (3). Remove two setscrews (4) from lock-release lever (5). Remove manual control lever (3) from lock-release lever (5). Remove lock-release lever (5) from eyepiece arm (6). Remove two setscrews (7). Lever spool is under spring tension. Exercise care when removing tapered pin which se- cures lever spool. Support lever spool (8) with a V-block and drive out tapered pin (9) from bellows assembly (10). Pull lever spool (8) and helical spring (11) from bel- lows assembly (10). Remove threaded ring (12) from bracket (13). Remove two machine screws (14) and two lock- washers (15) from bracket (13). Discard lock- washers. Unscrew bellows assembly (10) to disengage it from eyepiece arm (6). Remove bracket (13) con- taining tube (16) and bellows assembly (10) from eyepiece arm (6). Remove two headless straight pins (17) only if damaged. Carefully pull bellows assembly (10) through tube (16). Remove tube (16) from bracket (13). Remove preformed packing (18) from end of bel- lows assembly (10). Discard preformed packing. 3-10