TM 9-2330-238-14
Section IV. OPERATION
UNDER UNUSUAL CONDITIONS
Page
Paragraph Title
Number
Fording
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2-34
General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-32
Operation
in Extreme Cold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-32
Operation
in Extreme Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-32
Operation
in Mud and Snow....
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2-33
Operation
in Saltwater
Areas....
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2-33
Operation
in Sandy or Dusty Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-33
Operation
Under Rainy or Humid Conditions
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2-19. GENERAL.
a.
This section
contains
instructions
for safely
operating
the semitrailers
under unusual
conditions.
In
addition tonormal
preventive maintenance
service, special
care must be taken
tokeep
the semitrailers
operational in
extreme temperatures
and humidity.
b.
For information
on driver selection,
training,
and supervision,
refer to FM 55-30.
c.
For information
on special
driving instructions
for operating
wheeled
vehicles
under unusual conditions,
refer to FM 21-305.
2-20. OPERATION
IN EXTREME COLD.
a.
Special
care must be taken
when operating
semitrailers
in extreme cold weather. Refer to FM 9-207 for
information
on operation
in cold weather.
b.
Refer to Chapter 3, Section
I for proper lubrication
during extreme cold weather.
c.
Generally,
extreme
cold
causes
lubricants
to thicken
or freeze
and various
semitrailer
construction
materials to become
hard and brittle, and easily damaged
or broken. The operator must be alert to effects of extreme
cold on semitrailers.
d.
Care must be taken when
handling
cables.
Extreme cold weather
can cause
insulation
material
on
electrical
wire to crack, causing
short circuits. Construction
material may become
hard, brittle, and easily broken or
damaged.
e.
When parking for any period of time in temperatures
below 0°F (-18°C),
park in a sheltered area out of the
wind and clean off any buildup
of ice or snow. Place a footing
of planks or brush under tires to prevent them from
freezing to the ground. Ensure that tires are properly inflated (para 1-10). Under inflated tires will freeze, resulting in flat
spots.
f.
Use caution
when
placing
semitrailer
in motion
after a shutdown.
Thickened
lubricants
may cause
component
failure.
Free frozen brakeshoes,
or tires frozen to ground, with care.
2-21. OPERATION
IN EXTREME
HEAT.
a.
Refer to Chapter 3, Section
I for proper lubrication
during high heat conditions.
b.
Do not park semitrailer
in sunlight for long periods
of time. Heat and sunlight shorten tire life.
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