AIR-EXHAUST SYSTEM - TM-5-1940-277-100039

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FUEL SYSTEM MK2 W/ CUMMINS 6BT 5.9 LITER -cont.

TM-5-1940-277-10 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK 1(1940-01-105-5728) MODEL USCSBMK 2 (1940-01-218-9165) Manual

FIRE EXTINGUISHING SYSTEM

TM 5-1940-277-10

TM 1940-10/1

1-16. AIR-EXHAUST SYSTEM. The port engine and the starboard engine have individual air-exhaust

systems. The systems are identical except that the port engine discharges exhaust gases to port side and the

starboard engine discharges exhaust gases to starboard side. Each port and starboard exhaust system is

cooled by raw water from the hydrojet.

Air Intake draws air for combustion from the engine compartment. The air intake contains filters that

remove particles from the air that could cause engine damage.

Turbocharger draws a large amount of air (approximately 360 cubic feet per minute) and supplies it to

the intercoolerwhere it is cooled before entering the intake manifold. The turbocharger is driven by

exhaust gas expanding through a turbine wheel.

Heat Shield for the MK1 and MK2 W/ Sabre 5.95 liter engine encloses the turbocharger's turbine

housing which operates at high temperature. The heat shield contains insulation, but may cause burns

if touched during, or immediately after extensive operation of the engine. The MK2 W/ Cummins 6BT

5.9 Liter heat blanket contains insulation that may cause burns if touched during, or immediately after

extensive operation of the engine. The MK2 W/ Cummins 6BT 5.9 Liter has a water cooled

turbocharger.

Exhaust Pipe carries the exhaust gases to the flexible connection and on to the exhaust port on the

side of the boat at water level. The exhaust gases are cooled by raw water from the raw water cooling

system. The raw water enters the exhaust pipe just after the point where gases leave the turbine

housing.

Flexible Connection is a short piece of bellows-type rubber tubing used to isolate the engine from the

hull.

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