TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM9-1240-401-34&P 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Using a feeler gage, check the clearance between the cross-level mechanism (61) and the rocker as- sembly above the cross-level mechanism. Record the reading for use during installation of the cross- Ievel mechanism (61) later. Loosen nut (62) until it is flush with the end of ta- pered pin (63). Tap nut (62) until sleeve bearing (64) and tapered pin (63) disengage. Remove nut (62), sleeve bearing (64), and tapered pin (63) as a unit. Remove two cap screws (65), two Iockwashers (66), two cap screws (67), and two Iockwashers (68). Discard Iockwashers. Tilt cross-level mechanism (61 ) forward until it clears rocker assembly and remove cross-level mechanism (61). Remove two clamping catches (69) by removing two machine screws (70) and two Iockwashers (71) for each clamping catch (69). Discard Iockwashers. Remove plug (72), spring (73), and V-bearing (74). Remove gib key (75) and, if necessary, headless straight pin (76). Remove two machine screws (77), two lock- washers (78), cross-level mechanism knob (79), and indicator (80). Discard Iockwashers. Remove tapered pin (81), body hub (82), and flat washer (83). Remove setscrew (84) and setscrew (85). Using adjustable spanner wrench, remove seat (86). Remove wormshaft assembly (87) from cross-level mechanism (61). If necessary for repair, remove three setscrews (88) and three setscrews (89). 4-13