TM 10-4610-234-13
Item
No.
12
13
14
15
16
17
Table 2-1. Operator Preventive Maintenance Checks and Services. (cont.)
Interval
Before
Before
Before
Before
Before
Before
Location
Item To Check/
Service
Gate Valves
Tee Assemblies
Nozzle
Stand
Hose
Connection
Kit, 2-inch
Discharge
Hoses
Gate Valves
Procedure
a. Inspect for loose or missing
hand wheel.
b. Inspect valve couplings for
cracks and bent or broken locking
arms. Inspect for cut, torn or mis-
sing coupling gaskets. Check for
missing dust caps and plugs.
c. Rotate hand wheel. Valve stem
should turn freely.
d. Check for loose or missing bolts
and nuts.
a. Inspect tee fittings for cracks,
breaks, and severe corrosion.
b. Inspect couplings for cracks and
bent or broken locking arms. in-
spect for cut, torn or missing cou-
pling gaskets. Check for missing
dust caps and plugs.
a. Inspect for bent legs and mis-
sing attaching hardware.
b. Inspect for broken or missing
support chains.
Inspect for loose coupling connec-
tions. Reconnect and lock loose
couplings.
a. Inspect hoses for cuts, tears,
and deep abrasions.
b. Inspect couplings for cracks and
bent or broken locking arms.
Inspect for cut, torn or missing cou-
pling gaskets. Check for missing
dust caps and plugs.
a. Inspect for loose or missing
hand wheel.
b. Inspect valve couplings for
cracks and bent or broken locking
arms. Inspect for cut, torn or mis-
sing coupling gaskets. Check for
missing dust caps and plugs.
c. Rotate hand wheel. Valve stem
should turn freely.
d. Check for loose or missing bolts
and nuts.
Not Mission
Capable If:
Hand wheel missing.
Coupling damaged.
Gaskets damaged or
missing.
Valve stem sticks or
binds.
Hardware missing.
Tee cracked severely
corroded.
Coupling or gasket dam-
aged. Gasket missing.
Legs bent or hardware
missing.
Support chain missing.
Hoses cut or torn.
Coupling damaged.
Gaskets damaged or
missing.
Hand wheel missing.
Coupling damaged.
Gaskets damaged or
missing.
Valve stem sticks or
binds.
Hardware missing.
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