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M0087475-06
69
Operation Section
Fuel Related Components in Cold Weather
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
• Oil changes
• Refueling of the fuel tank
This will help prevent water and/or sediment from
being pumped from the fuel storage tank and into the
engine fuel tank.
Fuel Heaters
Fuel heaters help to prevent fuel filters from plugging
in cold weather due to waxing. A fuel heater should
be installed in order for the fuel to be heated before
the fuel enters the primary fuel filter.
Select a fuel heater that is mechanically simple, yet
adequate for the application. The fuel heater should
also help to prevent overheating of the fuel. High fuel
temperatures reduce engine performance and the
availability of engine power. Choose a fuel heater
with a large heating surface. The fuel heater should
be practical in size. Small heaters can be too hot due
to the limited surface area.
Disconnect the fuel heater in warm weather.
Note: Fuel heaters that are controlled by the water
temperature regulator or self-regulating fuel heaters
should be used with this engine. Fuel heaters that are
not controlled by the water temperature regulator can
heat the fuel in excess of 65° C (149° F). A loss of
engine power can occur if the fuel supply
temperature exceeds 37° C (100° F).
Note: Heat exchanger type fuel heaters should have
a bypass provision to prevent overheating of the fuel
in warm weather operation.
For further information on fuel heaters, consult your
Perkins dealer.
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