Install three caps (4) and loosen
adjustment screw (5).
Unlock retainers (6) and remove
periscope (7) from mount (8) and
stow in periscope stowage box.
Guide head of periscope (7) into mount (8) until retainers (6) lock periscope in place.
Adjust elevation angle using lever (9). Tighten adjustment screw (5) on elevation clamp until clamp is
seated firmly to mount (8). Remove three caps (4).
Remove power cable from dummy
To adjust headrest (10), loosen
adjusting knobs (11), move headrest
to desired position, and tighten