TM 5-4220-233-14
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
Paragraph
Page
2-9
General................................ ................................ ................................ ... 2-31
2-10
Operation In Extreme Cold................................ ................................ ...... 2-31
2-11
Operation In Extreme Heat................................ ................................ ...... 2-31
2-12
Operation In Sandy or Dusty Areas ................................ ......................... 2-31
2-13
Operation In Saltwater Areas................................ ................................ ... 2-31
2-14
Operation In Mud ................................ ................................ .................... 2-31
2-15
Operation In Snow ................................ ................................ .................. 2-32
2-16
Fording ................................ ................................ ................................ ... 2-32
2-17
Decontamination Procedures ................................ ................................ .. 2-33
2-9.
GENERAL.
This section contains instructions for safely operating the Mobile Compressed Gas Servicing Unit under
unusual conditions. In addition to normal preventive maintenance service, special care must be taken to keep
the trailer operational in extreme temperatures and humidity. This section also includes references for the
decontamination of the Mobile Compressed Gas Servicing Unit.
2-10.
OPERATION IN EXTREME COLD.
a.
Special care must be taken when operating the towed vehicle in cold weather. Refer to FM 21-305 for
special instructions for all towed vehicles.
b.
Refer to Chapter 3, Section I, for proper lubrication during extreme cold weather.
c.
Care must be taken when handling cables. Extreme cold weather can cause insulation material on
electrical wire to crack, causing short circuits. Construction materials may become hard, brittle, and easily
damaged or broken.
d.
When parking for any period of time in temperature below 0° F (-18º 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 and swivel
jacks to prevent them from freezing to the ground. Ensure that the tires are properly inflated. Underinflated
tires will freeze, resulting in flat spots.
2-11.
OPERATION IN EXTREME HEAT.
a.
Refer to Chapter 3, Section I, for proper lubrication during extreme heat conditions.
b.
Do not park the Servicing Unit in sunlight for long periods of time. Heat and sunlight shorten tire life.
Additionally, excessive heat may increase cylinder pressure to a potentially dangerous level.
c.
Shelter the Servicing Unit , when possible.
2-12.
OPERATION IN SANDY OR DUSTY AREAS
a.
Clean, inspect, and lubricate the Servicing Unit Trailer more often in sandy or dusty areas (Chapter 3,
Section 1).
b.
Maintain proper tire pressure:
(1) Reduce tire pressure to 35 psi (241 kPa) for flotation on soft sand and for operation on cross
country terrain.
(2) Tire pressure must be returned to 60 psi (413 kPa) when operation resumes on hard-surface roads
if tactical situation permits.
c.
Take precautions to prevent breathing air connections from becoming contaminated with sand and
dust. Always install dust caps on RECHARGE STATION, HIGH PRESSURE STATION, and four FILL
STATION ports immediately after use.
d.
Keep lid on Compressed Gas System tool box closed and drain plugs installed when not in use.
2-13.
OPERATION IN SALTWATER AREAS.
a.
Clean, inspect, and lubricate the Servicing Unit Trailer more often when operating in saltwater areas
(Chapter 3, Section I).
2-14.
OPERATION IN MUD.
a.
Immediately after operation In mud, thoroughly clean, inspect, and lubricate if tactical situation permits
(Chapter 3, Section I).
2-31
