TM 5-4220-225-14
Table 2-2. Mission Predive Setup Procedure (Cont).
Step
Procedure
g.
Communications Whip Assembly.
Remove the protective cap from the communications whip and
inspect for damage, cuts, sharp bends, corroded contacts, and
damaged threads.
2. HELMET ASSEMBLY
a.
Air Supply Assembly Check.
(Intemal Checks)
(1)
Check the air supply tubing connection for tightness. Inspect
tubing for corrosion and crimps.
(2)
Remove the air supply diffuser assembly and inspect the
adapter for cleanliness, corrosion and thread damage. Inspect
the O-ring for nicks or deterioration. Replace if necessary.
(3)
Disassemble the supply diffuser assembly and inspect for dirt,
oil, and moisture.Inspect threaded parts for corrosion or
damage.Clean or replace parts as necessary. Replace the
filter elements if necessary
NOTE
Do not reinstall diffuser assembly until relief valve
test has been satisfactorily completed.
3. OPERATIONAL TEST
a.
Relief Valve Test.
Perform relief valve test in accordance with paragraph 2-8, c.
b.
Drysuit Leak Test.
NOTE
Leak test of the drysuit could be performed at any
time. There is no hard fast rule for drysuit testing.
Perform drysuit leak test in accordance with paragraph 2-8, d, as
necessary.
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