TM5-4220-231-14&P
(3) Remove handle hex nut (11) from stem (5).
(4) Remove handle (10) from stem (6) by pushing
it away from the stem.
(5)
Remove safety wire assembly
(12) from stem (5).
(6)
Remove hex nut (9) and washer (8) from stem retainer (6).
(7)
Remove gland nut (7) from valve body (2).
(8)
Remove stem retainer (6) from stem (5).
(9) Remove
stem (5) from valve body (2).
(10) Remove,
cut, and discard backup ring (4) and O-ring (3).
b.
Reassembly
Instructions
(1)
Lubricate with silicone compound
(Item 9, Appendix D), and install new backup
ring (4) and new O-ring (3)
on stem (5).
(2) Install stem (5) in valve body (2).
(3) Install stem retainer
(6) on stem (5).
(4) Install gland nut (7) over stem retainer to valve body (2).
(5)
Install washer (8) over stem (5).
(6) Install hex nut (9) on stem (5).
(7) Install closed end of safety wire assembly
(12) over exposed
end of stem (5).
(8) Install handle (10) on stem (5). Ensure
correct orientation
of handle to slide over flat areas
on stem.
(9) Install handle hex nut (11) on stem (5).
(10) Install relief cap nut (13) on stem (5).
(11) Install retaining ring on the safety wire assembly
(12) to the groove
in the relief cap nut (13).
(12) Conduct
operational
and leak tests to ensure
proper function
of the isolation valve.
(13) After testing, seal the isolation valve in a clean plastic bag (Item 6, Appendix
D). Package
in a second
plas-
tic bag (Item 6, Appendix
D) with a tag between
inner and outer bag bearing the following information
read-
able from the outside:
Part No.: 13229E4570
CAGE: 97403
Nomenclature:
Isolation Valve
5-44
Change 1
