TM 5-4220-231-14&P
b.
Reassembly
Instructions
(1)
Install new seat quad ring (11) and seat (12) in body half (10).
(2)
Install new stem bearing (5) on upper part of stem (6).
(3)
Install two new stem backup rings (7), new stem O-ring (8), and new stem bearing (9) on stem (6).
Lubricate with silicone compound
(Item 9, Appendix
D) as required.
(4)
Install stem (6) assembly
through opening in body half (10). Make certain stem is installed properly.
(5)
Position stem (6) so that stem ball (13) can be installed on-the
bottom of the stem (6) inside the
body half (10). Rotate stem (6) to ensure stem ball is installed properly.
(6)
Install new seat quad ring (11) and new seat (12) in body half (16).
(7)
Lubricate
with silicone compound
(Item 9, Appendix
D), and install new end piece backup ring (15)
and new end piece O-ring (114) on body half (16).
(8)
Secure body half (16) to body half (10) with two socket head bolts (17) and hex nuts (18). Tighten
securely.
(9)
Lubricate
with silicone compound
(Item 9, Appendix
D) and install a new O-ring (19) in each end
fitting on body half (10) and body half (16).
(10)
Screw hex nut (4) on body half (10).
(11)
Secure
handle
(2) to exposed
end of stem (6) by screwing
set screw (3) in handle
(2) and tighten-
ing to stem (6).
(12)
Conduct
operational
and leak tests to ensure
proper function
of the valve.
(13)
After testing,
seal valve assembly
(1) in a clean plastic bag (Item 6, Appendix.
D). Package
in a
second
plastic bag (Item 6, Appendix
D) with a tag between
inner and outer bag bearing
the fol-
lowing information
readable
from the outside:
Part No.: 13229E4597-9
CAGE:
97403
Nomenclature:
Isolation,
Bleed or Crossover
Valve
Change
1
5-21
