TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 4-7. MAINTENANCE OF M138 TELESCOPE MOUNT (CONT). REASSEMBLY (CONT) 16 Apply sealing compound (item 10, appx C) to threads of externally threaded ring (25). 17 Install externally threaded ring (25) in adapter (3). Torque shaft (24) counterclockwise to 15.0 in.-lb (1.7 N-m) using adjustable spanner wrench and torque converter (figure 6, appx D). 18 Apply sealing compound (item 10, appx C) to threads of setscrew (26). 19 Install setscrew (26) in adapter (3). 20 Install spring (27) and detent plunger (28) in manual control lever (29). 21 Install retaining ring (30) and manual control lever (29) on shaft (24). Leave manual control lever (29) in detent position. 22 Temporarily install setscrew (31) in manual control lever (29) and secure to shaft (24). 23 If necessary, drill and ream manual control lever (29) for pin (32). Refer to TM 9-254. 24 Install pin (32). 25 Remove setscrew (31). 4-10