TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
Page 187 of 344
TM 9-1240-401-34&P c. Assembly 2 3 4 5 6 7 8 9 10 11 12 13 14 1 Install two strikes (33) and secure with four new Iockwashers (32) and four machine screws (31). Apply grease (item 7, appx B) to new preformed packing (28) and install on shouldered shaft (27). Apply grease (item 6, appx B) to shouldered shaft (27). Turn telescope upside down to clear elevation shaft hole. Install shouldered shaft (27) and rotate until seated. Install setscrew (25), but do not tighten. Depress shouldered shaft (27) and tighten setscrew (25). Screw elevation knob (26) onto shouldered shaft (27). Back off setscrew (25) until flush with housing and seal with adhesive. Push elevation knob (26) into housing and install setscrew (24). Tighten setscrew (24) until it bot- toms against elevation knob (26) and then back off as required for smooth operation. Apply grease (item 7, appx B) to two new preformed packings (30) and install on two plugs (29). Install two plugs (29) into housing. Apply adhesive to the groove and ledge of cover (19). If removed, install two windows (23). Apply adhesive to two new shims (22) and four new shims (21) and install on cover (19). Apply adhesive to the mating surface of cover (19). 5-13