TM 5-4310-277-14
dustproof material. Keep the unit covered when not
b. If the unit becomes encrusted with salt, wash it
with fresh water using a soft bristle brush if required
in use.
to remove residue.
c. Make sure all surfaces requiring lubrication are
than when operating under normal conditions.
d. Take adequate precautions to prevent foreign
clean and dry before applying lubricant. Lubricate
the unit in accordance with the lubrication order.
matter from entering the fuel tank. Service the fuel
d. Coat exposed polished or machined metal
strainer screen in the filler neck of the fuel tank as
often as necessary and keep the bowl of the fuel filter
surfaces with a suitable rustproof material after first
removing any accumulation of rust.
assembly free of foreign matter. Clean the engine air
cleaner more often than usual.
2-11. Operation at
High Altitudes
2-9. Operation Under Rainy or
Humid Conditions
ficiently at elevations up to 5,000 feet. There will be
a. Protect the unit with suitable shelter with
a reduction in efficiency because of the rarefied air at
adequate ventilation. Keep the sides open for
this level. This is a normal unpreventable condition.
ventilation when operating the unit.
b. Do not operate the unit in small confined or
b. Make sure all surfaces requiring lubrication are
enclosed areas that does not have ample air cir-
clean and dry before applying lubricant. Lubricate
culation or ventilation.
the unit in accordance with the lubrication order.
c. Coat exposed polished or machined metal
c. Fill the fuel tank at the end of each day's
surfaces with a suitable rustproof material after first
removing any accumulation of rust.
fuel tank.
d. Adjust the engine carburetor to compensate for
d. Open the draincock frequently to blow water
the reduced amount of oxygen available to the
from the air receiver tank.
carburetor.
e. Service the engine air cleaner more frequently.
2-10. Operation in
Salt Water Areas
a. Wipe the unit dry at frequent intervals.