TM 5-3805-261-23-1
THEORY OF OPERATION - CONTINUED
0003 00
FUEL SYSTEM
0003 00
NOTE
Fuel system schematics are located in WP 0352 00.
1.
Fuel Injector Nozzles. Four nozzles are mounted on cylinder head. Nozzles are closed end, differential pressure,
hydraulically operated, and hole type.
Fuel Transfer Pump. The fuel transfer pump is
2.
mounted on the fuel injector pump at forward, right
side of engine; it is cam-operated. The fuel transfer
pump draws fuel from fuel tank through inline pri-
FUEL
mary fuel filter and pushes it through secondary filter
TRANSFER
to the individual fuel injectors.
PUMP
397-007
Air Cleaner. Dry type air cleaner filters air before it is
3.
applied to the inlet manifold by the turbocharger. It is
TURBOCHARGER
mounted at top of engine and projects upward through
the hood. Dust is drawn from incoming air through
dust ejector line attached to exhaust system.
Turbocharger. The turbocharger is mounted on top of
4.
AIR
CLEANER
engine on right side. It forces incoming air under pres-
sure into the inlet manifold to raise engine efficiency.
397-005
Fuel Tank. Tank has a 75 gal. (284 L) capacity. It is mounted at rear of machine between the engine and the radiator.
5.
6.
Fuel Injector Pump.
a.
Fuel from primary fuel filter flows to gear driven fuel injection pump. Fuel is again filtered, then metered accu-
rately and applied to each cylinder at high pressure through fuel injector nozzles. The fuel is delivered at precisely
timed intervals.
b.
The throttle control lever controls fuel metering through a cable connection. This also attaches to an accelerator
pedal. The centrifugal speed regulating governor is located within the fuel injector pump housing.
0003 00-4
