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Operation Section
Fuel Related Components in Cold Weather
Another important fuel property which can affect cold
start and operation of diesel engine is Cetane
number. Detail and requirements of this property are
given in this Operation and Maintenance Manual,
"Fluid Recommendations".
Fuel Related Components in
Cold Weather
Fuel Tanks
Condensation can form in partially filled fuel tanks.
Top off the fuel tanks after you operate the engine.
Fuel tanks should contain some provision for draining
water and sediment from the bottom of the tanks.
Some fuel tanks use supply pipes that allow water
and sediment to settle below the end of the fuel
supply pipe.
Some fuel tanks use supply lines that take fuel
directly from the bottom of the tank. If the engine is
equipped with this system, regular maintenance of
the fuel system filter is important.
Drain the water and sediment from any fuel storage
tank at the following intervals: weekly, service
intervals and refueling of the fuel tank. Draining will
help prevent water and/or sediment from being
pumped from the fuel storage tank and into the
engine fuel tank.
Fuel Filters
After you change the fuel filter, always prime the fuel
system in order to remove air bubbles from the fuel
system. Refer to the Operation and Maintenance
Manual in the Maintenance Section for more
information on priming the fuel system.
The micron rating and the location of a primary fuel
filter is important in cold-weather operation. The In-
line filter, primary fuel filter, and the fuel supply line
are the most common components that are affected
by cold fuel.
Fuel Heaters
Note: The OEM may equip the application with fuel
heaters. If so, the temperature of the fuel must not
exceed 73 °C (163 °F) at the fuel transfer pump. The
fuel heater should be installed before the electric lift
pump.
For more information about fuel heaters (if equipped),
refer to the OEM information.
Diesel Exhaust Fluid in Cold
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Weather
Due to the freezing point of Diesel Exhaust Fluid
(DEF) the aftertreatment system is equipped with
electrically heated DEF lines. The system also has a
coolant heated element in the DEF tank.
During periods of weather in which DEF can freeze
the application should be stood on level ground when
not in use. DEF can start to freeze at −11° C
(12.2° F).
Note: At certain angles DEF can cover the DEF filler
cap. If the DEF freezes, the DEF tank vent could
block. A blocked vent in the DEF tank assembly will
cause operational difficulties.
For information on DEF refer to this Operation and
Maintenance Manual, "Fluid Recommendations".
SEBU9068-03
i07677871
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