OPERATION UNDER UNUSUAL CONDITIONS
2-5. Operation in Extreme Cold (Below
a. General. The generator sets are designed to
operate at temperatures as low as -65°F (-53.8°C).
To operate the unit at temperatures below 0°F, posi-
tion the air cleaner intake shutter (fig. 2-7) in the
WINTER position and move the oil pan baffle rod
(fig. 2-7) to the position toward the front of the en-
b. Engine Preheating. When the ambient tem-
perature is -25°F (-31.7°C) and below, preheat the
engine. For instructions on preheating the engine
using a blowtorch, refer to paragraph 2-4.
c. Lubrication. The generator does not require
lubrication. For engine lubrication instructions
refer to LO 5-2805-258-12 and TM 5-2805-258-14.
Additionally, lubricate the ball joints at each end of
the throttle control rod with a light oil suitable for
use at 0°F to -65°F; order NSN 9150-00-257-5449,
d. Battery. Keep the battery fully charged.
After adding water to the battery, charge the bat-
tery by external means or by running the engine for
a period of at least one hour.
e. Fuel System. When not in operation, keep
fuel supply cans or other containers full to prevent
condensation of moisture. Be careful to prevent ice,
snow, and moisture from entering the fuel system.
Accumulated moisture will freeze and clog the sys-
tem. Inspect the fuel filter for accumulated mois-
ture after each operating period and if any is found,
service the fuel filter. Refer to TM 5-2805-258-14
for service instructions.
Disturb wiring as little as possible
during cold weather. Insulation on
wiring becomes brittle when cold and
will break easily.
f. Electrical Systems. Keep wiring and elec-
trical components free of ice, snow, and moisture.
g. Operation. Allow the engine to warm thor-
oughly before applying load.
h. Protection. Provide as much protection for
the equipment as is practical, at all times. When the
equipment is not in use, cover it with canvas or
other protective covering.
2-6. Operation in Extreme Heat
a. General. When operating the equipment at a
time when ambient temperatures are high, efficient
cooling and adequate lubrication are vitally im-
b. Cooling. Provide maximum ventilation at all
times. Keep the equipment clean, paying particular
attention to the engine shrouds and cooling fins and
the generator blower cover. See that all air passages
are free of obstructions. Make certain the air
cleaner shutter (fig. 2-7) is in the SUMMER posi-
tion and that the oil pan baffle rod (fig. 2-7) has
been moved to the position toward the rear of the
c. Operation. Do not load the generator beyond
its rated capacity. If possible, keep the generator
load to a minimum. Make frequent meter readings
to detect any overload. If an overload is indicated,
reduce the load or stop the unit and take corrective
d. Battery. The water in the electrolyte evapo-
rates during normal battery use. At high tem-
peratures, the loss of water is accelerated. Inspect
the electrolyte level more frequently and add water
as required to maintain the water level above
2-7. Operation in Dusty or Sandy
a. General. When the unit is operated in dusty
or sandy areas, take special precautions to keep the
unit. clean and adequately lubricated.
b. Fuel System. Use care to prevent dust and
sand from entering the fuel system. Inspect the fuel
filter after each operating period. Refer to TM 5-
2805-258-14 for filter service instructions.