Perkins 904J-E36TA Operation And Maintenance Manual page 75

M0092609-05
Cold Filter Plugging Point (CFPP) is a temperature at
which a particular fuel will pass through a
standardized filtration device. This CFPP gives an
estimate of the lower operability temperature of fuel
Be aware of these properties when diesel fuel is
purchased. Consider the average ambient air
temperature for the engines application. Engines that
are fueled in one climate may not operate well if the
engines are shipped to colder climate. Problems can
result due to changes in temperature.
Before troubleshooting for low power or for poor
performance in the winter, check the fuel for waxing
The following components can provide a means of
minimizing fuel waxing problems in cold weather:
• Fuel heaters, which may be an OEM option
• Fuel line insulation, which may be an OEM option
Winter and arctic grades of diesel fuel are available in
the countries and territories with severe winters. For
more information refer to the Operation and
Maintenance Manual, "Fuel For Cold-Weather
Operation"
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 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
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 80° C (176° 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.
i07486546
Diesel Exhaust Fluid in Cold
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 and DEF
pump.
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".
Fuel Related Components in Cold Weather
75
Operation Section
i07944903