Inspect all wiring for corrosion or
2-15. Operation Under Rainy or Humid Conditions
deteriorated insulation and correct any deficiencies
a. Keep the fuel tank filler cap tight to prevent water
from entering the fuel tank. Service the fuel tank
c. Keep thoroughly lubricated to prevent en- try of
water into bearings and polished metal surfaces. Keep
hoist cables clean. Lubricate as directed in approved
lubrication fittings to see that no water has entered.
2-17. Operation in High Altitudes
c. Frequent inspection of the electrical wiring for
a. Operation in high altitudes presents operational
corrosion, loose connections, or deteriorated insulation
problems due to lower atmospheric pressure and wide
should be made, which, unless re- paired could cause a
b. Keep air cleaner clean and free of obstructions
Lubricate in accordance with the approved
and service frequently.
c. Maximum performance can be maintained by
2-16. Operation in Salt Water Areas
carefully following the operator's daily preventive
a. Inspect the unit for rust and corrosion. Rust and
maintenance services (para 3-5). Caution: Check the unit
corroded conditions at any point on the unit must be
frequently for overheating of the engine at high-altitude
corrected immediately. Remove all rust, and paint the
bare surfaces. Place a light film of lubricant on polished
or machined metal surfaces.
b. Although the wiring of the crane has been specially
treated to resist fungus and rot, frequent inspection is
Section VI. OPERATION OF MATERIEL USED IN CONJUNCTION WITH THE EQUIPMENT
press the top lever. Direct the powder at the base of the
flame, using a side-to-side sweeping motion.
This section coven the description and operation of the
c. Replacement. After using the extinguisher, do not
auxiliary equipment supplied for use with the crane, but
replace in bracket until after inspecting as instructed
not necessary for the basic functioning of the crane.
2-19. Fire Extinguisher (Dry Chemical Type)
d. Maintenance. Weigh the fire extinguisher every 6
The dry chemical type fire
months and replace the extinguisher if weight is less
extinguisher is suitable for use on all types of fire and is
than 3 3/4 pounds, or if pressure is below 125 pounds.
effective in areas when ambient temperature is -40F
Refer to SB-114. The dry chemical fire extinguisher will
and above. The fire extinguisher has a 2 1/2 pound
be serviced by re- placement of entire extinguisher.
capacity, and is a stored pressure, lever-operated type.
b. Operation. Remove the fire extinguisher from its
bracket. Remove the tape seal. Lift the handle and