a. Lubricate the packing ring (fig. C-2, item 10)
as possible when centering the diopter
with a light coating of grease ( Spec. MIL- G-4343,
c. Hold the eyepiece assembly (fig. C-2, item 8)
NSN 915000-R69-8255) and assemble the ring
with the eyecup down. With a brush, apply a light
into the innermost groove o f the objective
coating of grease (Spec. MIL-G-4343 to the rim
b. Apply a light coating of grease (Spec.
of the rubber eyepiece bellows only (fig. C-2, item
14) . Apply a light coating of grease (Spec.
MIL-G-4343) to the threads of the eyepiece
mounting ring. Assemble the eyepiece assembly to
11 or 12). Carefully screw the torque adapter plug
into the objective housing until hand tight. Insert
diopter index mark is approximately at the six
the torque wrench into the square holes of the
torque adapter plug, and slowly apply pressure
o'clock position when the binocular is in the
normal hand -held post ion. Carefully engage the
until the dial indicates 75 inch -pounds. Remove
the torque wrench. While securely holding the
threads of the eyepiece retaining ring with those of
the housing and screw the ring down until finger
objective assembly with the strap wrench, unscrew
the torque adapter plug, being careful not to
damage the end housing threads.
item 1) tighten the retaining ring to insure that the
split ring beneath the retainer is seated.
The eyepiece assembly (fig. C-2, item 8) is
to be seated by hand as much as possible
If both oculars were disassembled, assemble the
before engaging retainer threads. The
second ocular as instructed above. Oculars must be
purged with nitrogen (section IV, following) after
eyepiece assembly is to be rotated as little
the modules have been reassembled.
P U R G I N G THE BINOCULAR