TM 5-4220-225-14
4-26. Helmet Communications (Cont).
c. Repair.
(1) Replace microphone. (figure 4-27)
(a) Remove helmet liner (1).
(b) Remove microphone holder (2) with microphone (3) from air supply tube (4).
(c) Remove holder (2) from microphone (3).
(d) Loosen two setscrews (5)and remove connector (6) from microphone (3).
(e) Connect connector (6) to new microphone (3) and tighten two setscrews (5).
(f) Install microphone (3) on holder (2) and install holder (2) on air supply tube (4).
(g) Install helmet liner (1).
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