4L6: Fuel Manifolds
The Fuel Manifold is located directly in the forward starboard corner of the engine room.
The main engines and the generator each have a fuel
supply
and, since extra fuel is pumped
to the engine that is used to cool the engines injection pump, there is a fuel
return
line as well.
Remember, at slow speeds, these return lines are pumping a lot of fuel;
you must be careful
not to set the valves so that a return line is switched to a tank for long that is not also
supplying fuel, lest it overflow and pollute the water through the tank vents’
overflowing!
The diagram to
the right shows the fuel
manifold, its valves, and
the equipment to which
the lines are connected.
Example
Port Side:
The black arrows
show how fuel would
flow to the port engine
when using the forward
tank. The operator
opens valves 6, 7 & 3.
The fuel flows:
•
From the forward
tank through
valve #6;
•
to valve #7;
•
to the fuel filter
and engine;
•
back to the
manifold;
•
then back to the
tank through #3.
To accomplish
the same result to
starboard, the user
opens valves 13, 15 and
10.
On the next page
are various combinations:
Section 4L: Fuel System 4.34