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 Preventive Maintenance Checks and Services
Table 2-1.
A - Annually
S - Semiannually
Q - Quarterly
D - Daily W - Weekly M - Monthly
Items To Be
Interval
Item
Procedures
Inspected/
M
Q
S
A
No.
D
W
Serviced
DOORS, HATCHES, AND MANHOLES/WINDOWS GROUP - CONT
q
Watertight
(a) Rub chalk on knife-edge.
66
Hatches and
Scuttles CONT
(b) Close and dog closure tightly. The gasket
should seal tightly on knife-edge around
entire periphery.
CAUTION
Compression of the gasket
should not exceed 1/8-inch.
Excess compression will
damage the gasket.
(c) Open closure and observe imprint of chalk on
gasket. If chalk line is not continuous,
closure is not watertight and required
adjustment or repair.
(16) Apply a light coat of silicone compound, MIL-S-
8660, to gasket.
(17) Operate closure through full cycle of operation
several times to ensure smooth and positive
dogging action.
(18) Inspect safety devices for the following as
applicable:
(a) Cracked or broken welds.
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