TM-9-1290-262-24&P Technical Manual for M2A2 Aiming Circle Download
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ARMY TM 9-1290-262-24&P MARINE CORPS TM 00476C-24&P AIR FORCE TO 49A7-3-72/74 3-2. M2A2 AIMING CIRCLE—MAINTENANCE INSTRUCTIONS. (Cont) REASSEMBLY (cont) 42 43 44 45 46 47 48 49 50 51 Lightly lubricate sleeve bushing (42), ball socket seat (43), worm shaft (44), worm shaft cap (45), spring (46), and all bearing or working surfaces within body assembly with grease (item 6, appx D). Install sleeve bushing (42) with hole toward worm shaft (44). Place ball socket seat (43) on worm side of ball and aline slot in ball socket seat with setscrew hole (47) in body assembly. To install worm shaft (44) in body assem- bly, slip worm shaft through hole in sleeve bushing (42). Rotate worm onto internal worm gear until ball socket seat (43) is in place within body assembly. Check that slot in ball socket seat (43) is still alined with setscrew hole (47) in housing. Install worm shaft cap (45) until bearing contact with worm ball is made. Install spring (46) and plug (48). Tighten machine thread plug securely. Tightening of setscrews (49 and 50) will be done during backlash adjustment. Lightly lubricate azimuth index scale dial (51) and new washer (52) with grease (item 6, appx D). Install azimuth index scale dial (51) with its curved side in contact with the housing curved side and the index line facing out. 3-22