3-15. ANVIS Mount Installation.
INITIAL SETUP TABLE
ANVIS Attachment Kit
Mechanics Tool Kit
or Personnel with ASI
of H2/Q2 (ALSE Qualified)
Before the ANVIS NVG can be installed on the SPH-4B, the ANVIS mount and a cable
clip must be attached. The ANVIS attachment kit contains installation instructions, four
screws for the rear of the mount, a cable clip and attaching screw, pile fastener for
ANVIS battery pack attachment, and a moleskin lens guard for visor protection. Install
the ANVIS mount as follows:
Remove outer visor lock from dual visor assembly by removing center screw, lock-key and washer. Set
aside for reinstallation.
Loosen all remaining visor housing screws.
Remove top two screws from dual visor assembly, lift housing from tracks, and reinstall screws beneath
housing into tracks. Repeat procedure for bottom visor assembly screws, and remove housing from helmet. This
will ensure that the visor assembly remains intact during ANVIS mount installation.
Remove and discard four screws from rear of ANVIS mount. Place mount against dual visor housing and
align mount holes with visor housing holes. Secure mount to housing by inserting four 3/16" pan-head screws
(supplied) through housing and into mount. Fasten screws securely, but do not overtighten.
Attach moleskin lens guard to inside bottom of visor housing at center of ANVIS mount area.
Place housing on visor assembly and attach to helmet using four screws.
Position cable clip on right side (as worn) of visor housing and secure using 5/16" screw supplied. Insert
screw through clip and into insert on bottom of right-side visor track. Feed cable through clip and tighten screw
securely, but do not overtighten.
Install outer visor knob using center screw, lock, and washer removed in step 1.
Attach pressure-sensitive pile fastener to center rear of helmet for ANVIS battery pack.