TM 5-6115-593-12
TO 35C2-3-463-1
Section III. OPERATION UNDER UNUSUAL CONDITIONS
2-13. OPERATION IN COLD (40°F to -25°F) (4.4 to -
32°C).
a. General. The generator set operates in
temperatures down to -25° (-32°C) with the
housing kit installed. To operate successfully
down to this temperature, the engine is heated
by an integrally mounted preheat system which
receives auxiliary power from an external
source.
b. Fuel System. Be sure proper grade of fuel is
used for existing temperatures. Service fuel
filters and strainers more frequently then
normal. Remove ice, snow, and moisture from
the filler cap and filler neck. At end of day's
operation, drain water from fuel tank and from
the fuel filters.
c. Engine Electrical System. Clean batteries and
cables and inspect for cracked or damaged
cases. Be sure the battery terminals are tight,
clean and lightly greased. See that the battery
cap vent holes are open. The electro-lyte level
must be 3/8 inch (9.5 mm) above the plates.
See that batteries are kept fully charged.
Inspect all electrical wiring for cracks, breaks,
and fraying. Tighten loose connections.
NOTE
After adding water to the batteries in
freezing temperatures, operate the
battery charger for at least 1 hour.
d. Lubrication. Lubricate in accordance
with instructions in Chapter 3, Section II.
e. Cooling System. Inspect level of coolant in
radiator by checking sight glass. Inspect cooling system
for leaks, paying particular attention to gaskets and hose
connections. Verify that antifreeze mixture is in
accordance
with
table
3-1.
2-14. OPERATION IN EXTREME HEAT (UP TO
125°F) (52°C).
a. Keep the cooling system free from rust and
scale by changing water filters. Keep cooling
system filled with clean coolant. Avoid use of
alkaline water or salt water, which causes the
accumulation of rust and scale. Inspect belts
for proper adjustment. Be sure engine
generator set is free of dust and dirt. Check
for obstructions in radiator cooling fins and
make sure shutter controls are operating
properly.
b. Lubricate in accordance with the instructions in
Chapter 3, Section II.
c. Inspect battery electrolyte level daily. The
plates should be covered with 3/8 inch (9.5
mm) of water. Add water if necessary.
d. Be sure generator set is free of airflow
restrictions. When operating indoors, make
provisions for adequate ventilation and the
venting of exhaust fumes to the outside.
e. Keep external surface of engine clean.
f. Run generator set at no load, for 5 minutes, to
allow the engine to cool prior to shutdown.
2-15. OPERATION IN DUSTY OR SANDY AREAS.
a. Housing kit must be installed.
b. Where water is available, keep the immediate
area wetted down. Keep the unit as clean as
possible, paying special attention to screens
and grilles.
c. Clean filters and strainers more frequently than
under normal conditions. Be sure that all
lubricant containers are tightly sealed and
stored in an area free from dust and sand.
d. Take all necessary precautions to
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