REPLACEMENT - TM-55-1905-223-24-18-10796

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ASSEMBLY

TM-55-1905-223-24-18-1 Landing Craft Utility (LCU) NSN 1905-01-154-1191 Basic Craft Part 1 Manual

Replace/Repair Watertight Scuttle, Quick Action (Flush).

TM 55-1905-223-24-18-1

REPLACEMENT

Place hatch (1, FIGURE 2-178) in position on frame.

Install flat washers (3) and align holes.

NOTE

Make sure that one washer is placed on each

side of hinge blade.

I n s e r t cylindrical pin (4) in hinge (2).

Secure cylindrical pin (4) using cotter pins (5).

NOTE

Upon initial installation of a hatch, new

gasket, or new dog the hatch should be

"chalk tested."

Perform chalk test as follows:

(1) Clean the knife edge of the closure frame.

(2) Apply a chalk line completely around the knife edge of hatch frame.

(3) Dog the hatch.

( 4 ) If the hatch is watertight, the gasket will show an unbroken chalk line.

(5) If the line is broken, adjust the dogs and retest.

CAUTION

Dogs should not be adjusted to give more

than 1/8" compression. Excessive pressure

is harmful to the gasket.

f. Operate hatch and check for smooth and positive dogging action.

2-708