SECTION III. TECHNICAL PRINCIPLES OF OPERATION
1-12. ENGINE. The engine is an eight-cylinder, V-configuration, turbocharged, watercooled two-cycle diesel
engine. The engine develops 450 horsepower (336 kw) at 2100 rpm. It is equipped with a 12 VDC electrical
system including an electric starter motor and a battery charging alternator.
a. Starting System. The starter is mounted on the left side of the engine. When current is applied to the
starter, the starter rotates. The starter pinion engages the flywheel ring gear and rotates the engine, allowing
the diesel fuel and air to enter the cylinders and start the engine.
Figure 1-7. Engine - Front View
b. Alternator and Charging System. The alternator is mounted at the rear top of the engine and is belt driven.
The 12 VDC system consists of two free batteries located in the battery compartments. The batteries are
connected to a battery switch in the cab.
c. Fuel, Air Intake and Exhaust Systems.
(1) The fuel system is comprised of a 65-gallon (246 l) fuel tank, 12 VDC electric priming pump, engine fuel
pump, primary and secondary fuel filters, and supply and return lines between the tank and engine. The
fuel filters have replaceable filter elements.