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TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download

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TM 9-1240-400-34&P 13 Remove four screws (31), four lockwashers (32), access cover (33), and gasket (34). 14 Remove pins (35) only if damaged. 15 Remove four screws (36), prism (37), and two pins (35). 16 Remove screw (38) and clutch half (39). Discard screw. 17 Using small wood dowel, carefully remove observation window (40). 18 Remove four screws (41), four lockwashers (42), access cover (43), and gasket (44). CLEANING Clean all parts per TM 9-254. REPAIR Repair is by replacement of authorized parts as required. Refer to appendix B. REASSEMBLY/INSTALLATION 1 If removed, install two pins (1) in elbow (2). 2 Install prism (3) and four screws (4). 3 Install gasket (5), access cover (6), four new lockwashers (7), and four screws (8). 4 Install clutch half (9) and new screw (10). Stake screw. Refer to TM 9-254. 5 Apply sealing compound (item 10, appx C) to edge of observation window (11). 6 Install observation window (11) and remove excess sealing compound. 2-53