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Operation Section
Fuel Related Components in Cold Weather
Perkins recommends a warning device for the inlet
manifold temperature and/or the installation of an
inlet air temperature gauge. The warning device for
the inlet manifold temperature should be set at 75 °C
(167 °F). The inlet manifold air temperature should
not exceed 75 °C (167 °F). Temperatures that
exceed this limit can cause power loss and potential
engine damage.
Fuel Related Components in
Cold Weather
Fuel Tanks
Condensation can form in partially filled fuel tanks.
Top off the fuel tanks after operating 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
• Oil changes
• Refueling of the fuel tank
This draining 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 in order to prevent overheating of
i06093465
the fuel in warm-weather operation.
For further information on fuel heaters, consult your
Perkins distributor .
M0109073
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