TM 5-4220-231-14&P
(3)
Remove
positionable
elbow (2) from
check
valve
(1) by turning
elbow
2
counterclockwise.
Remove,
cut, and
discard
O-ring (8).
8
(4)
Remove check valve (1) from tee (3)
by
turning
counterclockwise.
Remove,
cut, and discard
O-ring (7).
7
3
b.
Replace
7
(1)
Lubricate
new O-ring (7), M83248/2-
908, with silicone compound
(Item 9,
Appendix
D).
Install O-ring (7) on
check
valve.
(2)
Install check valve (1) on tee (3).
3
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