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TM 10-4320-343-14
4.15.2 Gate Valve Maintenance.
This task covers: 4.15.2.1 Removal
4 .
15 . 2 . 2 I n s t a l l a t i on
4.15.2.2 Repair
INITIAL SETUP
Tools
General Safety Instructions
General Mechanic’s Tool Kit (appendix B,
To prevent rolling or sliding, do not
Section III, Item 1)
work on equipment that is not securely
s t a b i l i z e d.
Material/Parts
Do not work on equipment without
Lockwashers (TM 10-4320-343-24P)
following standard shop safety
Gaskets (TM 10-4320-343-24P)
precautions.
Packing (TM 10-4320-343-24P)
Equipment Conditions
Equipment shut down, refer to
paragraph 2.5.1.2 or 2.5.2.2.
Coupling half removed, paragraph 4.15.1.
4.15.2.1
Removal.
To prevent rolling or sliding, do not work on equipment that is
not securely stabilized.
Ensure both wheels are secure.
Failure to obey this warning may result in serious personal
i n j u r y.
a.
Remove eight nuts (figure 4-61, 1) and eight lockwashers (2) from studs (3) on
manifold (4) .
b.
Remove gate valve (5).
c .
Remove and discard gasket (6).
4.15.2.2 Disassembly.
a .
Remove nut (7), plate (8) and hand wheel (9).
b .
Remove packing nut (10) and spring (11).
c .
Remove packing gland (12) and old packing (13).
d.
Remove eight nuts (14), lockwashers (15), bolts (16).
e .
Remove and discard gasket.
4.15.2.3 Repair.
Replace any damaged or missing parts.
4.15.2.4 Assembly.
a .
Install new gasket.
b .
Install eight bolts (16), lockwashers (15), and nuts (14).
c .
Install new packing (13) onto stem (17) until packing is seated.
4-114
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