TM 10-8400-203-23
4-6. INSPECTION, CLEANING, AND REPAIR - Continued
I
b. Rubber Edging.
(1)
(2)
(3)
Inspect the rubber edging to see that there are no cuts and that the edgings are securely adhered to the
helmet shell.
Clean the edging with a clean cloth to remove dirt, dust, oil, grease, and perspiration.
Repair the black synthetic rubber edging by rebonding the edging to the helmet shell edge or bonding the
appropiate lengths of edging to replace the damaged edging. Clean the surfaces with a cloth moistened
in toluene solvent Fed Spec TT-T-548. Roughen the surfaces before applying the adhesive edging.
c.
Foam Rubber Inserts.
(1) Inspect the inserts for tears, filth, bad odor and soft spots. Soft spots can be detected by compressing the
inserts with fingertip.
(2) Replace the foam inserts if any defects are found, as per 4-6 c (1).
d. Helmet Liner.
(1) Inspect the helmet liner for torn cloth, cut or loose pads, and loose or damaged straps and fasteners.
(2) Inspect the headset-microphone set for cleanness, cracks, loose switch, and loose or broken electrical
lines and connections. Be certain that the ear seals are properly installed on the ear cups.
(3) Clean the liner using the following procedure:
(a) Remove Liner.
1 Remove liner from helmet shell by unfastening the two side and one rear strap snap fastener.
2 Pull liner from shell.
3 Detach fastener tape tunnel from earphone connecting wire.
4 Starting from inside the liner, pullback liner away from earcup channel and insert blade of 3 inch
screwdriver (NSN 5120-00-293-3311) between liner earcup opening and earcup channel.
Slide screwdriver around earcup until liner seperates from earcup.
5 Pull liner from earcup. Repeat steps 4 and 5
6 To remove pads: turn liner inside out and remove foam pads leaving the brow pad intact.
(b) Clean liner.
1 Hand wash in warm water (120°F) and mild laundry detergent or machine wash on permanent
press cycle. Rinse thoroughly with dear warm water after laundering.
2 Hang liner and let air dry.
(c) Instal liner.
1 Insert foam pads into liner.
2 Starting from outside liner opening on one side place liner earcup into channel and insert screw-
driver blade between liner and earcup channel. Slide screwdriver around earcup until liner seats
in earcup channel. Repeat for other earcup.
3 Attach fastener tape tunnel in back of liner to earphone connecting wire.
4 Attach liner to shell by mating hook
fastener tape on outside liner with pile fastener tape on inside shell.
5 Fasten the two side and rear strap snap fasteners.
(4) Replace lost or damaged items.
Change 5 4-7
