3-146.3. FUEL LINES AND MANIFOLD CONNECTIONS - MAINTENANCE INSTRUCTIONS
a. The fuel system includes the following which are integral to the engine fuel injectors, fuel pipes and fuel manifold.
The external components of the fuel system are a fuel filter, a fuel strainer, a fuel pump and fuel lines.
b. Fuel is drawn from the supply tank through the fuel strainer, and enters the fuel pump at the inlet side. Leaving the
pump under pressure, the fuel is forced through the fuel filter and into the inlet fuel manifold, then through the fuel pipes
and into the inlet side of each fuel injector.
c. The fuel manifold is identified by the words IN (top passage) and OUT (bottom passage cast into the engine block).
d. Surplus fuel returns from the outlet side of the injectors to the fuel return manifold and then back to the supply tank.
3-146.3. FUEL LINES AND MANIFOLD CONNECTIONS - MAINTENANCE INSTRUCTIONS (Continued).
This task covers:
Special Environmental Conditions
Do not drain fuel into bilges.
Use the oil/water separation
and recovery system to collect
drained oil. Discard properly.
General Safety Instructions