TM 5-4220-231-14&P
(6)
Remove
tube (18) from positionable
elbow (17) by positioning
a wrench
on the union nut (19) and elbow (117).
Turn
union
nut counterclockwise.
20
Remove,
cut,
and
discard
O-ring
(20).
19
17
18
(7)
Loosen
and
remove
panel
nut
(7)
from
housing
(8)
at front
of panel.
Remove
regulator
housing
(8) from
rear
of front
panel.
(8)
Remove
the
three
positionable
elbows
(10,13,
and
17)
from
the
28
regulator
housing
(8).
Remove,
cut,
10
and discard
O-rings
(28,29,
and 30)
from
the elbows.
8
29
30
17
13
b.
Relplace
28
10
(1)
Lubricate
O-rings
(28),
M83248/2-
904;
(29),
M83248/2-904,
and
(30),
29
M83248/2-908,
with
silicone
compound
(item
9,
Appendix
D).
Install O-ring
(28) on elbow
(10), 0-
ring (29) on elbow
(13), and
O-ring
(30)
on
elbow
(17).
Install
each
30
11
'
-,--
4b
elbow on regulator
(8).
13
17
4-8
