TM 5 3810-288-12
d. Lubrication. Keep parts lubricated thoroughly to
problems due to lower atmospheric pressure and wide
temperature ranges. At altitudes above 5,000 feet it may
repel water from polished metal surfaces and to prevent
be necessary to adjust the carburetor (refer this condition
the entry of water into bearings. Keep lifting cables
to organizational maintenance). Make certain that the air
cleaner is clean and free from obstructions.
2-30. Operation at High Altitudes
Caution: Check the engine frequently for over-
Operation at high altitudes presents special
heating in high altitude operation.