Service Manual

Fuel Supply Lines ISB, ISBe and QSB (Common Rail [...]
Page 6-60 Section 6 - Injectors and Fuel Lines - Group 06
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NOTE: For engines equipped with a fuel cooled ECM
cooling plate, there is a fuel supply line connecting the
ECM cooling plate to the electric fuel lift pump.
Remove the fuel supply line connecting the ECM cooling
plate to the electric fuel lift pump, if applicable.
Remove the fuel supply line connecting the electric fuel lift
pump, to the fuel filter inlet, if applicable.
NOTE: For marine applications, a fuel supply line
connects the fuel cooled ECM cooling plate to the inlet of
the fuel filter head.
Remove the fuel supply line connecting the fuel cooled
ECM cooling plate to the inlet of the fuel filter head, if
applicable.
NOTE: The fuel filter may be remote mounted off of the
engine.
Remove the fuel supply line connecting the fuel filter
outlet to the gear pump inlet.
WARNING
Fuel is flammable. Keep all cigarettes, flames, pilot
lights, arcing equipment, and switches out of the
work area and areas sharing ventilation to reduce the
possibility of severe personal injury or death when
working on the fuel system.
CAUTION
Use caution when disconnecting or removing fuel
lines, replacing filters and priming the fuel system
that fuel is not spilled or drained into the bilge area.
Do not drop or throw filter elements into the bilge
area. The fuel and fuel filters must be discarded in
accordance with local environmental regulations.
Disconnect the fuel line from the combined fuel manifold
and the fuel lift pump.
Disconnect the fuel line from the fuel lift pump to the ECM
cooling plate.