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
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).
43
Install sleeve bushing (42) with hole
toward worm shaft (44).
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.
45
To install worm shaft (44) in body assem-
bly, slip worm shaft through hole in sleeve
bushing (42).
46
Rotate worm onto internal worm gear until
ball socket seat (43) is in place within body
assembly.
47
Check that slot in ball socket seat (43) is
still alined with setscrew hole (47) in
housing.
48
Install worm shaft cap (45) until bearing
contact with worm ball is made.
49
Install spring (46) and plug (48). Tighten
machine thread plug securely. Tightening
of setscrews (49 and 50) will be done
during backlash adjustment.
50
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
51
curved side in contact with the housing
curved side and the index line facing out.
3-22
