TM 5-4220-225-14
4-29. Helmet Ducts (Cont).
b.
Replace (Return Duct. (figure 4-32)
(1)
Remove left return duct (1), right return duct (2), connector (3), and tie wrap.
(2)
Apply adhesive to mating surface on connector (3).
(3)
Install connector (3), right return duct (2), left return duct (1) and tie wrap.
FOLLOW-ON MAINTENANCE
Install helmet liner (para 4-28).
4-78
