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