TM 10-4610-234-13
Table 2-1. Operator Preventive Maintenance Checks and Services. (cont.)
Item
No.
75
76
77
78
79
Interval
After
After
After
After
After
Location
Item To Check/
Service
Gate Valves
Water Meter
Assembly
Gate Vales
Check Valves
Gates 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. Check for loose or missing bolts
and nuts.
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.
Inspect valve body for cracks and
leaks.
Dual Tanks Connection Kit
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.
Hardware missing.
Coupling or gasket dam-
aged. Gasket missing.
Hand wheel missing.
Coupling damaged.
Gaskets damaged or
missing.
Valve stem sticks or
binds.
Hardware missing.
Body cracked or leaking
(Class III).
Hand wheel missing.
Coupling damaged.
Gaskets damaged or
missing.
Valve stem sticks or
binds.
Hardware missing.
2-16
