TM 5-4220-225-14
4-26. Helmet Communications (Cont).
b. Replace.
(1) Disassemble. (figure4-25)
(a) Remove helmet liner (1).
(b) Remove microphone (2) and holder (3) from air supply tube (4).
(c) Remove holder (3) from microphone (2).
(d) Loosen two screws (5) and tag and remove leads (6) from microphone (2).
(e) Remove speaker (7) from holder (8).
(f) Loosen two screws (9) and tag and remove leads (10) from speaker (7).
(g) Repeat steps (e) and (f) for other speaker.
(h) Remove three screws (11) and carefully remove communications whip (12) and adapter (13), with leads (6)
and (10) and preformed packing (14) from helmet (15).
(i) Unsolder tag and remove leads (6) and (10) from adapter (13).
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