ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
Lightly lubricate 17 stop rings (69) with
65
grease (item 6, appx D).
Turn worm shaft (59) until elbow telescope
66
objective end (70) touches body assembly.
Then back off one-half turn.
Install 17 stop rings (69) with tabs pointed
67
upward and spaced to let rings lie flat.
Install and turn adapter (71) until tab (72)
68
of top stop rings fits into notch (73) in
adapter.
Turn adapter (71) counterclockwise until it
69
stops turning.
70
Back adapter (71) off clockwise until pin
holes are alined and install pin (74).
NOTE
If a new worm was installed, perform steps
71 and 72.
Insert 0.003-inch thickness gage blade
71
between adapter (71) and top stop ring.
Push down on adapter (71) and using
72
adapter pin hole as a guide, drill a No. 52
hole in worm shaft (59) and ream for No.
6/0 pin. Install pin (74).
73 Install scale dial (75) and knob (76).
Install two screws (77) loosely. Tightening
will be done during collimation adjust-
ments.
3-25
