b. Attaching CEP Interface Harness (CEP900-I04) to Earcups
CAUTION
To avoid damage to the earcup shell,
ensure that the pilot hole is located
properly as specified in Step 1.
1. Use an awl to make a pilot hole 7/16 inch
below (as worn) the center of the existing
hole. (See Figure 4-12.4, View A.)
2. Lay the earcup on a flat surface, and
drill a 1/4-inch hole into the pilot hole.
(See Figure 4-12.4, View A.)
3. Carefully pull the part of the communications
cord that extends into the right earcup out
from behind the energy-absorbing liner.
4. Reinsert the communications cord with the
grommet back into the previously existing
communication cord hole in the earcup from
which it was removed. Carefully pull more of
the communications cord into the earcup to
allow easier access to the metal tips of the
communications cord leads. When pulling
the cord, be careful not to damage the
energy-absorbing liner.
CAUTION
When pulling the cord through the grommet in
Step 5, do not pull on the thin white or black
wires.
5. From outside the earcup, insert the interface
harness into the newly drilled hole and seat
the grommet. (See Figure 4-12.4, View B.)
Pull additional wire through the grommet
into the earcup to make soldering
connections easier.
6. Carefully expose no more than 1/8 inch of
bare wire at the pin connector on the black
communications cord either by sliding the in-
sulation back or by stripping the insulation
away.
7. If necessary, strip the black lead of the
interface harness to 3/16 inch.
8. Using long-nosed pliers, bend the stripped end
of the interface harness into a hook and fit the
hook around the exposed wire of the black
communications cord lead as shown in the
attachment detail in Figure 4-12.5.
Figure 4-12.5. Interface Harness
Connected to Communications Cord
Figure 4-12.4. Earcup Showing
Location of Interface Harness
VIEW A
VIEW B
EXISTING HOLE
Scalloped
earcup
Non-scalloped
earcup
1/4-INCH HOLE FOR INTERFACE CABLE
COMMUNICATIONS CORD
INTERFACE CABLE
COMMUNICATIONS CORD
INTERFACE HARNESS
ATTACHMENT
DETAIL
Scalloped
earcup
Non-scalloped
earcup
4-18.4 Change 3
TM 1-8415-216-12&P
