TM 5-4220-225-14
4-26. Helmet Communications (Cont).
(2) Assemble. (figure 4-26)
(a) Connect leads (1) and (2) as tagged to adapter (3) and solder.
(b) Route leads (1) and (2) in helmet (4) and install adapter (3) and preformed packing (5) and secure with
three screws (6). Torque screws to 13-15 in.-lb. (1.5-1.7 Nm).
(c) Connect leads (1) as tagged to left speaker (7) and tighten two screws (8).
(d) Install speaker (7) in holder (9).
(e) Repeat steps (c) and (d) for remaining speaker.
(f) Connect leads (2) as tagged to microphone (10) and tighten two screws (11).
(g) Install microphone (10) in holder (12).
(h) Connect holder (12) to air supply tube (13).
(i) Install helmet liner (14).
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