TP-6774 2/14a 23Section 4 Fuel System
Section 4 Fuel System
4.1 General
In most installations, both the generator set and the
propulsion engine operate from a common fuel tank with
a dual dip tube arrangement. The generator set’s dip
tube is shorter than the propulsion engine’s dip tube.
With this arrangement fuel may not be available to the
generator set when the fuel supply is low. See
Figure 4-1 for a fuel system schematic.
Generator
set
Propulsion
engine
1
2
4
3
To fuel
injectors
1. Fuel tank
2. Dual dip tubes
3. Fuel filter
4. Fuel feed pump
5. Water trap
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5
Figure 4-1 Fuel System Schematic, Typical
4.2 Fuel Filter
Clean the fuel filter with fresh fuel oil and compressed
air. The filter’s useful life will be determined largely by
the quality and condition of the fuel used. Under normal
conditions, replace the fuel filter element at the specified
interval in the generator set’s operation manual. Use the
following procedure to replace the fuel filter.
1. Press the start/stop button to stop the generator
set.
2. Press the power button to turn the controller off.
3. Disconnect the generator set engine starting
battery, negative (--) lead first.
4. Close the fuel supply valve.
5. Loosen the fuel filter by turning it counterclockwise.
Remove the fuel filter and use rags to clean up
spilled fuel oil. Dispose o f the fuel filter and rags in
an approved manner.
6. Clean the contact surface of the fuel oil filter
adapter.
7. Lightly lubricate the gasket surface of the new fuel
filter with fresh fuel oil. Thread the filter on the
adapter until the gasket makes contact;
hand-tighten the filter an additional one-half turn.
Wash hands after any contact with fuel oil.
8. Open the fuel supply valve.
9. Reconnect the generator set engine starting
battery, negative (--) lead last.
10. Bleed the system. See Section 4.2.1, Fuel System
Bleed.
1
GM74543-B
1. Fuel filter adapter
2. Fuel filter
3. Removal (counterclockwise)
4. Installation (clockwise)
<
<
<
<
2
3
4
Figure 4-2 Spin-On Fuel Oil Filter
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