TM 9-2330-357-14&P
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
Page
Paragraph Title
Number
Fording ............................................................................................................................
General
....................................................................................................................
Operation in Dusty or Sandy Areas ..................................................................................
Operation in Extreme Cold or Snow .................................................................................
Operation in Extreme Heat ..............................................................................................
Operation in Mud .............................................................................................................
Operation in Rainy or Humid Conditions ..........................................................................
2-15. GENERAL.
a.
This section contains instructions for safely operating the M860A1 Flatbed Semitrailer under
unusual conditions. In addition to normal preventive maintenance and services, special care must be taken to
keep semitrailer operational in extreme temperatures and humidity.
b.
Chronic failure of materiel resulting from exposure to extreme conditions must be reported in
accordance with DA Pam 738-750.
2-16. OPERATION IN EXTREME COLD OR SNOW.
a.
Special care must be taken when operating semitrailer in cold weather. Refer to FM 9-207 and
FM 21-305 for special instructions on operating in cold or snow.
b.
Refer to Lubrication Instructions (Chapter 3, Section I) for proper lubrication during extreme cold
weather.
c.
Be cautious when placing semitrailer in motion after a shutdown. Thickened lubricants could
cause damage to equipment.
d.
When parking for any period of time in temperatures below 0 (-18 ), park in a sheltered area
F
C
out of the wind and clean off any buildup of ice or snow. 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 1-9).
Underinflated tires will freeze, resulting in flat spots.
e.
Brakeshoes may be frozen to brakedrums and may require preheating to avoid damage.
2-17. OPERATION IN EXTREME HEAT.
a.
Preventive maintenance is critical when operating at high temperatures. Semitrailer operating
systems must be kept cool, clean, and in good condition. Refer to Lubrication Instructions (Chapter 3, Section
b.
Fluids evaporate or break down under extreme heat. Have Organizational Maintenance check
outrigger control box and outrigger actuator fluids more frequently.
c. Do not park semitrailer in sun for long periods of time as heat and sunlight will shorten life of tires.
Check tires more often for damage or wear. Check tire inflation and add air when tires are cold and during
midpoint temperature during day, if possible. Do not over inflated tires (para 1-9).
d.
Shelter or cover semitrailer, if tactical situation permits.
2-24
