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TM 55-1905-223-24-18-1
NOTE
Upon initial installation of a scuttle, new
gasket, or new dog the scuttle should be
"chalk tested."
Perform chalk test as follows:
e.
(1) Clean the knife edge of the closure frame.
(2) Apply a chalk line completely around the knife edge of scuttle frame.
(3) Dog the scuttle.
( 4 ) I f t h e s c u t t l e i s w a t e r t i g h t , the gasket will show an unbroken chalk line
(5) If the line is broken, adjust the dogs and retest.
Dogs should not be adjusted to give more
than 1/8" compression.  Excessive pressure
is harmful to the gasket.
Operate scuttle and check for smooth and positive dogging action.
f.
2-720


 


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