ENGINE ROOM EXHAUST FIRE FLAP ASSEMBLY

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Figure 6. Engine Room Ventilation Exhaust Fire Flap Assembly

TM-55-1925-273-10-2 Inland and Coastal Large TUG (LT) NSN 1925-01-509-7013 (EIC XAG) Manual

Figure 8. Access to Engine Room Ventilation Exhaust Assembly Fire Flap

TM 55-1925-273-10-2

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CLOSE ENGINE ROOM VENTILATION AND MAIN ENGINE COMBUSTION AIR FIRE FLAPS

NOTE

If propulsion is required, do not CLOSE the main engine combustion air fire flap assemblies.

Pull the T handles (figures 3 and 4 items 1, 2, and 3) to their fully extended position. This CLOSES the main engine

combustion air fire flap assembly (figure 2, item 1), the engine room ventilation exhaust fire flap assembly (figure 6,

item 1) and CLOSES the engine room ventilation supply fire flap assembly lovers (figure 5, item 1).

Repeat step 1 on the opposite stack for the remaining fire flaps.

OPEN ENGINE ROOM VENTILATION AND MAIN ENGINE COMBUSTION AIR FIRE FLAPS

ENGINE ROOM EXHAUST FIRE FLAP ASSEMBLY

Gain access to the inside of the stack on the 02 level by loosening the four dogs (figure 8, item 1) and opening the

watertight hatch (figure 8, item 2).

Remove the eight bolts (figure 8, item 3) and eight flat washers (figure 8, item 4) from the manhole cover (figure 8, item 5).

Remove the manhole cover (figure 8, item 5) from the engine room exhaust fire flap assembly housing (figure 8, item 6).

Remove the gasket (figure 8, item 7) from the manhole cover (figure 8, item 5). Inspect the gasket for damage. Discard

the gasket if damaged, retain if intact.

Push the quick release T handle (figure 8, item 8) all the way in.

Have one crewmember push the engine room exhaust fire flap handle (figure 8, item 9) down, raising the engine room

exhaust fire flap (figure 8, item 10) up, while a second crewmember secures it in the OPEN position with the quick

release latch (figure 8, item 11).

Install a new gasket (figure 8, item 7) on the engine room exhaust fire flap assembly housing (figure 8, item 6).

Install the manhole cover (figure 8, item 5) and secure it with the eight flat washers (figure 8, item 4) and the eight bolts

(figure 8, item 3).

CLOSE the watertight hatch (figure 8, item 2) and tighten the dogs (figure 8, item 1).

10. Perform steps 1-9 for the engine room exhaust fire flap assembly on the opposite stack.

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