TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5.1-19. M15 QUADRANT MAINTENANCE INSTRUCTIONS - continued a. Disassembly - continued 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Remove plug (42), spring (43), and plunger (44). Loosen two setscrews (45) in nut (46). Using tubular spanner wrench 1-1/16 inch and 1- 5/64 inch, remove nut (46) and flat washer (47) from shouldered shaft (48). Remove gear sector (49) and flat washer (50) from shouldered shaft (48). Remove two machine screws (51) from gear sector (49). Loosen setscrew (52) in shouldered shaft (48); unsolder wire of electrical lead (53) from toggle switch (54) and remove electrical lead (53). Remove three screws (55), three lockwashers (56), and shouldered shaft (48), only if necessary for replacement. If removed, discard lockwashers. Remove pin (57), only if necessary for replacement, Using adjustable spanner wrench, remove ring (58) from M15 quadrant. Remove preformed packing (59) from ring (58). Discard preformed packing. Remove ball socket seat (60) from M15 quadrant. Remove tapered pin (61) securing spur gear (62) to shouldered shaft assembly (63). Remove tapered pin (64) from worm gear (65). Remove worm gear (65) and spur gear (62) from shouldered shaft assembly (63). Remove shouldered shaft assembly (63) and ball socket seat (66) from M15 quadrant. 5.1-38 Change 1