TM 9-2330-238-14
2-21. OPERATION
IN EXTREME
HEAT (Cont).
CAUTION
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 the tarpaulin.
c.
Cover
inactive
semitrailers
with tarpaulins
if no other shelter
is available.
Tarpaulins
are subject
to
deterioration
from mildew and attacks by insects or animals. Shake out and air tarpaulins
weekly for several hours.
Clean mildewed
tarpaulins 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 tarpaulin
is not
damaged,
treat as outlined
in FM 10-16.
d.
Semitrailers,
inactive for long periods
in hot, humid weather, are subject to rusting and accumulation
of
fungi growth. Frequently
inspect,
clean, and lubricate to prevent deterioration.
2-22. OPERATION
IN SANDY OR DUSTY AREAS.
a.
Clean, inspect,
and lubricate
semitrailers
more often in sandy or dusty areas (Chapter 3, Section I).
b.
Maintain proper tire pressure:
(1)
Reduce tire pressure to 32 psi (220 kPa) for operation
in soft sand.
(2)
Reduce tire pressure to 40 psi (276 kPa) for operation on cross-country
terrain. Tire pressure must be
returned to 48 psi (331 kPa) when operation
resumes on hard-surface
roads if tactical
situation
permits.
c.
When uncoupling
semitrailer
in sandy areas, use ground boards to prevent landing gear from sinking in.
2-23. OPERATION
IN MUD AND SNOW.
a.
Reduce tire pressure to 32 psi (220 kPa) for operation
in mud and snow.
b.
Immediately
after operation
in mud, thoroughly
clean, inspect,
and lubricate
if tactical
situation
permits
(Chapter 3, Section l).
c.
Pack wheel bearings
as required (Chapter 3, Section l).
d.
Refer to FM 21-305 for special
instructions
on driving hazards in snow.
e.
After each operation,
remove ice and snow from underneath semitrailer
and from hoses, lines, tubes, and
electrical
connections,
2-24. OPERATION
UNDER RAINY OR HUMID CONDITIONS.
a.
Dampness
increases
chances
of corrosion.
Inspect all surfaces
and electrical
connections
for signs of
corrosion.
Remove all signs of corrosion.
Apply corrosion
preventive compound
(Item 5, Appendix
E) to all electrical
connections.
b.
Protect semitrailer
from direct rainfall whenever
possible.
During dry periods,
open semitrailer
to air to
facilitate
drying process.
c.
Keep moisture from entering the fuel supply. Clean fuel filter before each operation to remove accumulated
moisture.
2-25. OPERATION
IN SALTWATER AREAS.
Clean,
inspect,
and lubricate
the semitrailer
more often when
operating
in saltwater
areas
(Chapter
3,
Section I).
2-33
