TM 5-3805-291-10
OPERATION UNDER UNUSUAL CONDITIONS - CONTINUED
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OPERATION IN EXTREME COLD
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N OT E
Refer to FM 9-207, Operation and Maintenance of Ordnance Materiel in Cold Weather, FM 31-70, Basic Cold
Weather Manual, and FM 31-71, Northern Operations, for additional information on cold weather operation
and maintenance.
1.
General. Extreme cold causes many problems:
a.
Lubricants thicken or congeal.
b.
Batteries may freeze or lose their electrical efficiency.
c.
Electrical insulation may crack and cause short circuits.
d.
Fuel may not readily atomize for combustion.
e.
Various materials become hard, brittle, and easily damaged.
f.
Cooling system requires adequate protection from extreme cold.
g.
Fuels, lubricants, and antifreeze compounds require special storage, handling, and use.
2.
Cooling System.
WARN I N G
DO NOT service cooling system unless engine has cooled. This is a pressurized cooling system and
escaping steam or hot coolant will cause serious burns.
DO NOT remove cooling system radiator cap when engine is hot. Allow engine to cool down.
Loosen cap to first stop and let any pressure out of cooling system, then remove cap. Failure to
follow this warning may cause serious burns.
Wear effective eye, glove, and skin protection when handling coolants. Failure to follow this
warning may cause injury to personnel.
a.
Inspect for leaks and general condition.
b.
Ensure hose clamps are tight.
c.
Check coolant level in sight gage at top of radiator tank. If necessary, add coolant to correct level (WP 0012 00).
d.
Notify Unit Maintenance if system needs service beyond adding coolant.
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