lines and leave drain open until all water is drained, then
2-19. Operation in Extreme Heat
General. Refer to TM 9-2320-209-10 for
additional information on operating the fire truck in
extreme heat. Pumps are not affected by extreme heat,
except for lubrication requirements.
Lubrication-. Be sure to use the proper grade
lubricant for all points of application. Refer to LO 9-
2320-23-12 and LO -421021-12 for special lubrication.
Check the lubricant level frequently.
2-20. Operation in Sandy or Dusty Areas
Lubrication. Keep all lubrication points clean
and well lubricated. Lubricate sparingly but more
frequently than under normal conditions. Clean all oily
or grease surfaces, paying particular attention to the
pump oil fill as it accumulates dust and sand. Service
the air cleaners, breathers, and oil filters more
frequently than under normal conditions (TM 92320-209-
Cooling and Fuel Systems. Service the
radiator, fuel tank, and fuel filter (TM 92320-209-10).
Pumps and Hose Reels. Keep the body
compartment doors closed except to perform necessary
operations. Wipe the hose reel drive gears and drive
chains to remove as much grease and oil from the
exposed surfaces as possible. When dusty or sandy
conditions no longer exist, remove the chains and wash
with an approved cleaning solvent, lubricate and
reinstall. Clean all the machine surfaces of the pump
and control linkages to remove accumulated dust and
Electrical Systems. Keep the insulation
electrical connections, and all motors free from dust and
sand to prevent wear and short circuits. Cover the siren
when not in use.
2-21. Operation Under Rainy or Humid Conditions
General. High humidity causes a rusting and
corrosive action to exposed metal surfaces not
protected with oil or grease.
Fuel System. Keep the fuel tank as full as
possible to eliminate condensation. Clean the fuel line
sediment bowl daily (TM 9-2320-209-10) .
Electrical Systems. Keep the electrical system
clean and dry. Wipe off any excess moisture. Pay
particular attention to electrical connections.
2-22. Operation in Salt Water
General. The deterioration and corrosion of
exposed metal is greatly accelerated in salt water areas.
Coat all exposed metal surfaces with an approved!
lubricant. When the fire truck has been partly immersed
or sprayed with salt water, wash down with fresh water.
Pumping Salt Water. Do not use salt water
except in case of extreme emergency. At the earliest
opportunity after pumping salt water, flush the tank
piping and fire pump thoroughly with fresh water. After
flushing, drain the fire pump.
2-23. Operation at High Altitude
General. Operation at high altitude presents
special problems due to lower atmospheric pressure and
a wide difference in temperature, which occurs during
the day and night. Protect the fire truck at all times from
the lowest anticipated temperature.
Cooling System. Keep the cooling system clean
and filled to the proper level. Inspect frequently as
water evaporates more rapidly at high altitudes. Keep
the radiator clean and engine compartment doors and
radiator shutters open when in operation.
Section V. OPERATION OF AUXILIARY MATERIAL USED IN CONJUNCTION WITH FIRE TRUCK
2-24. Fire Extinguishers
Government furnished equipment.
Refer to TM 5-687 for maintenance and refilling.