TM 5-4220-225-14
Table 2-1. Operator Preventive Maintenance Checks and Services (Cont).
Interval
Item
Item to be Inspected.
Equipment Will Be
No.
B
D
A
Q
Procedure
Reported Not Ready If
HELMET ASSEMBLY (Cont)
14.
Helmet Assembly Testing.
NOTE
Perform quarterly and prior to use.
•
a.
Vacuum Test.Perform vacuum test of the one
Helmet fails test.
way valve in accordance with procedures given
in paragraph 2-8, a.
•
b.
Flow/P Test.Perform helmet flow/P test in
Helmet fails test.
accordance with procedures given in paragraph
2-8, b.
•
c.
Leak Test.Perform helmet leak test in accor-
Helmet fails test.
dance with the procedures given in paragraph
2-8, b.
•
d.
Relief Valve Test.Perform relief valve test in
Helmet fails test.
accordance with the procedures in paragraph
2-8, c.
•
e.
Communication Check.Perform communication
Helmet fails test.
check in accordance with procedure in paragraph
2-10, e.
DRESS ASSEMBLY
NOTE
Perform quarterly when the dress assembly has
been stowed for prolonged periods, and before
and after each use.
15
Drysuit Inspection.
•
•
a.
Ensure the butyl rubber neckpiece and zipper
laminations are secure.
•
•
b.
Inspect the suit for possible open seams, tears,
abrasions, and punctures.
2-10
