TM 9-4940-549-14&P
ENGINE FUEL SYSTEM
through the filter assembly by a fuel transfer pump. The fuel transfer pump
facilitates the flow of fuel from the tank to the fuel injection pump. The
mechanical-type pump is a conventional cam-driven diaphragm pump that mounts on
the engine block. The fuel injection pump distributes and delivers an accurately
metered amount of fuel to each injector nozzle in a properly timed relationship.
A flyball-type governor provides automatic control of the fuel charge in accord-
ance with the engine load at any given speed range within the minimum and
maximum speed settings. The fuel injector nozzles spray a metered amount of
fuel into each combustion chamber. Unused fuel is returned to the tank through
the fuel return line.
Fuel Tank, Lines, and Fittings.
WARNING
The diesel fuel used in the engine for the Dynamotor-Welder is com-
bustible. Use caution when draining/filling fuel tank and working
on the fuel system. Extinguish all smoking materials and do not allow
sparks or open flame near the fuel tank and fuel system.
a. Removal. Remove the fuel tank, lines, and fittings as illustrated in
NOTE
The fording valve on the inside center of the fuel
tank cap must remain open at all times. If, for any
reason, the valve becomes defective and will not remain
open, replace the fuel tank cap.
Cleaning and Inspection.
b.
(1) Clean the fuel tank with cleaning solvent and blow out excess solvent
with compressed air.
(2) Inspect all gaskets for wear, tears, and deterioration.
(3) Clean all hardware in solvent and inspect for stripped threads.
(4) Inspect fuel tank for leaks, cracks, holes, defective welds, and
other damage.
(5) Replace all defective or missing parts.
Install the fuel tank, lines, and fittings as shown by
c. Installation.
