Operation Manual

2-25
(5) Using the ridged side of the container/wrench as a wrench, en-
gage the ridges on the container with the ridges on the LIF and
tighten the LIF handtight.
(6) Place the empty container/wrench back into the carrying case
pouch.
(7) Install the objective lens cap or the sacrificial window onto the
end of the objective lens and cover the LIF.
NOTE
The LIF must be used at all times unless directed by the unit
commander, to remove the LIF, based upon his/her assess-
ment of the laser threat in the theater of operations.
2.3.7. INSTALLATION AND ADJUSTMENT OF
HEADMOUNT
Perform the following procedures for donning the headmount.
NOTE
Do not don the headmount while the monocular is attached.
(1) Prior to donning the headmount, loosen the four ends of the
chinstrap approximately two inches from the sliding bar buckles
(Figure 2 .10.).
(2) Snap the front and rear snaps (Figure 2.10.) in place.
NOTE
If the headmount is too loose, remove the attached thin brow-
pad (Figure 3.3.) and replace with either the medium or thick
browpad stored in the carrying case. Refer to paragraph 3.3.2.
for removal and replacement of the browpads.
(3) With both hands grasp the neck pad (Figure 2.10.) and pull the
harness over your head and the neck pad down to the back of your
neck.
(4) Holding the chin cup in position on chin, adjust both sides of the
chinstrap until you feel light pressure against your chin. (DO NOT
TIGHTEN.)
(5) Maintain the position of the chin cup and remove any slack from
the chinstrap. (DO NOT TIGHTEN.)