Night Optics Falcon 6x Gen 3 Gated Long-Range Night Vision Binocular - Manual (Page 48)

2-
13
Not Fully
Mission
Capable If:
Binding, not
moving freely or
too loose.
Retainers will
not hold eye-
cup securely.
Not achieving or
maintaining
interpupillary
adjustment.
Procedure
Rotate diopter adjustment to
make sure the eyepiece lenses
move freely and are not loose.
Range is approximately ½ turn.
Check diopter cell retainers for
chips.
Check interpupillary adjustment by
sliding each eyepiece lens back
and forth for binding or looseness.
NOTE
There is a certain amount of
friction present to keep the
eyepiece lenses from moving
once you set them. This is okay.
Location
Check/
Service
Rear Cover
Cont.
Interval
Before/
After
Table 2-2. Preventive Maintenance Checks and Services for the NVG -
Continued.
Item
No.
4.
Cont.