TP-5594 5/956-18 Installation
NOTE
Do not tee intofuel injected fuel systems. Usea twodip
tubearrangementforfuelsupply. Consultanauthorized
service dealer for further fuel system installation
information.
Care must be taken when routing the fuel line from the
fueltanktothegeneratorset. Keepfuellinesasshortas
possible but maintain adequate clearance from the
exhaustsystem. Fuel lines must be run along the frame
or undercarriage—never run fuellinesinside the coach.
Locate fuel lines below the generator set compartment
withentrypointnearfuelpump(max.liftofthefuelpump
is 1 meter or 39 inches). The fuel line must be of
adequate size to handle the flow of fuel and withstand
road shock and year-round climate conditions. If steel
tubingisused,usea 5/16in.(8mm)I.D.(minimum)with
an 8 in. (230 mm) (minimum) flexible section to allow
free movement of the generator set.
Locatethefuelreturnlineasfaraspracticalfromthefuel
pickup. This will allow returned fuel to be cooled by the
tank fuel before delivery back to the fuel injectors.
Incomingfuelisused to cool theinjectorsandmaximum
engine efficiency will be achieved by supplying coolfuel
to the engine. The fuel tank capacity and the amount of
fuel will affect cooling capability.
Fuel Line Sizes:
Fuel Inlet 5/16 in. (8 mm)
Fuel Return 3/16 in. (5 mm)
Fuel Lines
If metal lines are used from the fuel tank, use a flexible
hose section to connectthe metal line to the preliminary
fuelfilter(suppliedloose)andflexiblehosesectiontothe
engine fuel pump (fuel-inlet connection). Use a flexible
hose section to connectthe metal line fromthe fuel tank
to the engine fuel-return connection point. The flexible
sectionsare necessarytoallow vibrationalmotionofthe
generatorsetduringoperation. See Figure 6-19forfuel
inlet- and return-line connections.
NOTE
Diesel-fueled engines require SAE 30R6, SAE30R7, or
SAE 30R8 type hose.
1
2
1. Fuel Inlet Connection 2. Fuel Return Connection
Figure 6-19. Fuel Inlet and Return Connection Points
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