2-25. OPERATION IN EXTREME COLD OR SNOW (Con't).
g . Be cautious when placing semitrailer in motion after a shutdown. Thickened lubricants may
cause failure of components. Free frozen brake shoes, or tires frozen to ground, with care.
2-26. OPERATION IN EXTREME HEAT.
a. If possible, park semitrailer under cover to protect it from sun, sand, and dust.
DO NOT use gasoline or dry cleaning solvent to remove oil or grease spots
from tarpaulin. Use only water and a scrubbing brush. Failure to follow this
caution will damage tarpaulin.
b. Cover inactive semitrailer with tarpaulins if no other shelter is available. Tarpaulins are
subject to deterioration from mildew or attacks by insects or animals. Weekly, shake out and air
tarpaulins for several hours. Clean mildewed tarpaulin with a dry scrubbing brush. DO NOT clean with
water until mildew is removed. If mildew is found, examine tarpaulin to determine if it is rotted or
weakened. Replace tarpaulin, if damaged. If not damaged, treat tarpaulin as outlined in FM 10-16.
c. Semitrailers, inactive for long periods in hot and humid weather, are subject to rusting and
accumulation of fungi growth. Frequently inspect, clean, and lubricate to prevent deterioration.
2-27. OPERATION IN DUSTY OR SANDY AREAS.
a. When uncoupling semitrailer in sandy areas, use ground boards placed under sand shoes to
prevent landing gear from sinking.
b. Frequently inspect, clean, and lubricate to prevent damage to semitrailer components due
to contamination from sand (see Chapter 3, Section I).
2-28. OPERATION IN AREAS OF HIGH HUMIDITY, HEAVY RAIN, AND SALTWATER.
a. When uncoupling semitrailer in muddy areas, use ground boards placed under sand shoes
to prevent landing gear from sinking.
b. Dampness increases chances of corrosion. Inspect all surfaces and electrical connections
for signs of corrosion. Remove any signs of corrosion. Apply corrosion preventive compound (Item 7,
c. Wash semitrailer thoroughly with clear water if it comes in contact with saltwater.
2-29. FORDING OPERATIONS.
a. Semitrailer is capable of saltwater or fresh-water fording to a depth of 20 in. (50.8 cm)
without any special servicing or protection required before fording.
b. After saltwater fording, wash semitrailer with clear water to guard against salt deposits
forming on surfaces and causing corrosion.