ARMY TM 9-1240-379-34
MARINE CORPS TM 04332A-34
2-4. DAYLIGHT BODY ASSEMBLY-MAINTENANCE INSTRUCTIONS. (cont)
15 Adjust deflection boresight knob
f . Turn knob (28) clockwise to its
limit. Loosen screw (26) and rotate
a . Remove screw (26) and spring (27).
d i o p t e r scale to read +4.0. Tighten
b. Remove knob (28) with scale at-
tached. Do not remove scale.
g . Turn knob (28) counterclockwise to
its limit. The diopter scale should
c. Set stop (29) against right-hand
read -4.0. If the scale does not read
side of pin (30) in clutch (31).
-4.0, loosen screw (26) and turn
d i o p t e r scale until 0 is midpoint of
d . Install knob (28) so that pin in knob
the knob rotation. Tighten screw
i s as close as possible against the
left-hand side of stop (29).
e. Install spring (27) and screw (26);
tighten screw (26).