TM 9-1240-400-34&P
6
Install access cover (10).
7
Install cushioning pad (11) and prism (12).
8
Install cushioning pad (13).
9
Install optical element holder (14) and spring
tension clip (15).
10
Apply a 1/16-in. bead of sealing compound
(item 10, appx C) in recess of cover (2) and
install.
11
Apply sealing compound (item 10, appx C) under
heads of two screws (16) and install.
12
Install reticle assembly (17) with slot (18) in cell
opposite observation window (5).
13
Install externally threaded ring (19) and tighten
just enough to keep reticle assembly from being
loose.
NOTE
Screws will be tightened during reticle
plumb/collimation
inspection,
and
adjustment will take place in final
inspection procedures.
14
Install four setscrews (20), but do not tighten.
15
Install setscrew (21), but do not tighten.
3-11
