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TM 9-2330-272-14
S e c t i o n I V . O P E R A T I O N U N D E R U N U S U A L C O N D I T I O N S
Page
Paragraph Title
Number
Fording
General
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2-84
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2-83
Operation in Areas of High Humidity Heavy Rain, or Saltwater . . . . . . . . . . . . . . . . . . . . . . .
2-83
Operation in Extreme Cold or Snow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-83
Operation in Extreme Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-83
Operation in Sandy or Dusty Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-83
2 - 2 6 . G E N E R A L .
a. This section contains instructions for safely operating the sentitrailers under unusual conditions. In
addition to normal preventive maintenanc service, special care must be taken to keep the semitrailers operational in
extreme temperatures and humidity.
b. Refer to FM 21-305 and FM 55-30 for information on special driving instructions under unusual
conditions.
c.
Refer to FM 9-207 for information on operation in cold weather.
d.
Refer to 90-3 for information on operation in extreme heat, dusty, or sandy conditions.
2-27. OPERATION INEXTREME COLD OR SNOW.
a. Care must be taken when handling cables. Extreme cold weather can cause insulation material on
electrical wire to crack, causing short circuits. Constuction material may become hard, brittle, and easily damaged or
broken.
b. When parking for any period of time, park in a sheltered area out of the wind and clean off any buildup of
snow or ice. Place a footing of planks or brush under tires and landing legs to prevent them from freezing to the ground.
Ensure that the tires are properly inflated (para 1-11). Underinflated tires will freeze, resulting in flat spots.
c. Use care when placing semitrailer in motion after a shutdown. Tickened lubricants may cause failure of
components. Free frozen brakeshoes, or tires frozen to ground with care.
2-28.
2-29.
must be
2-30.
OPERATION IN EXTREME HEAT.
a. Refer to Chapter 3, Section I for proper lubrication during extreme heat conditions.
b. Do not park the semitrailer in sunlight for long periods of time. Heat and sunlight shorten tire life.
c. Shelter cover the semitrailer with canvas, if available.
OPERATION IN SANDY OR DUSTY AREAS.
a. Clean, inspect, and lubricate the semitrailer more often in sandy or dusty areas (Chapter 3, Section l).
b. Reduce tire pressure to 45 psi (310 kPa) for operation in sand and cross-country terrain. Tire pressure
returned to 60 psi (414 kpa) when operation resumes on hard-surface roads, if tactical situation permits.
OPERATION IN AREAS OF HIGH HUMIDITY, HEAVY RAIN, OR SALTWATER.
a. Semitrailers, inactve for long periods of time in hot and humid weather, are subject to rapid rusting and
accumulation of fungus Frequently inspect, clean, and lubricate to prevent deterioration of painted surfaces
(Chapter 3, Section l).
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