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) 19 20 21 22 23 24 25 26 27 28 Lightly lubricate sleeve bushing (21), ball socket seat (22), worm shaft (23), and all bearing or working surfaces within the body assembly with grease (item 6, appx D). Install sleeve bushing (21) with hole toward worm shaft (23). Install ball socket seat (22) on worm side of worm shaft (23). Start worm shaft (23) into body assembly. Aline slot in ball socket seat (22) with setscrew (24) using setscrew hole (25) as a guide. To install worm shaft (23) in body assem- bly, slip worm shaft through hole in bushing (21), and rotate worm onto the internal gear until the ball socket seat (22) is in place within body assembly. Check that slot in ball socket seat (22) is still alined with setscrew hole in body assembly. NOTE Setscrew (24) will be tightened during backlash adjustment. Refer to page 3- 42. Lightly lubricate worm shaft cap (26), new washer (27), externally threaded ring (28), and spring (29) with grease (item 6, appx D). Install worm shaft cap (26) on worm shaft (23) until bearing contact with worm shaft ball is made. Press washer (27) into groove in externally threaded ring (28). Install externally threaded ring (28), washer side first, until contact with worm shaft cap (26) is made. 3-20 29 Install spring (29) and screw (30). Tighten screw securely. Setscrews (31 and 32) will be tightened during backlash adjustment. Refer to page 3-42.