CAUTION
In Step 5, be sure to loosen the knurled nut on the swivel
assembly before you rotate the boom assembly. Any attempt
to rotate the boom assembly without loosening the knurled nut
can cause the mounting hole in the helmet shell to become
rounded; consequently, the boom assembly will not be held in
place.
5. Referring to Figure 7, have the operator operate and adjust the
communications system as follows:
a. Loosen the boom swivel assembly by rotating the knurled nut
counterclockwise until the boom is free to move.
b. Rotate the boom up or down as needed.
c. Slide the boom backward or forward as needed.
d. Tighten the swivel by rotating the knurled nut clockwise.
e. Adjust the front of the boom as needed.
f. Loosen the knurled screw on the microphone, and adjust the
microphone as needed. Tighten the screw.
Figure 7. Communications System Points of Operation
6
CONNECTOR
MICROPHONE
PLUG
KNURLED NUT ON
BOOM SWIVEL ASSEMBLY
KNURLED SCREW
ON MICROPHONE
MICROPHONE
FRONT OF BOOM
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