TM 5-4310-381-13
2-13. OPERATION IN EXTREME COLD (-25ºF,-32ºC).
a. For air pump lubrication, refer to paragraph 3-2.
b. Refer to TM 5-2805-257-14 for correct engine lubricants.
c. Use proper care and handling of compressor in subzero weather to reduce maintenance and ensure adequate
operation.
d. Protect the compressor as much as possible to prevent damage from icing and moisture.
e. Store in protective units, boxes or buildings if available during cold weather.
f.
Use a careful preventive maintenance check for operation of the engine. Refer to TM 5-2805-257-14.
g. Operate the engine for a minimum of 30 minutes to evaporate any condensation.
h. Allow engine to reach proper operating temperature before using service air.
i.
Inspect carefully for any malfunction during operation.
2-14. OPERATION IN DIFFERENT ALTITUDES.
a. Power loss due to altitude is approximately 3.5 percent for each 1000 feet above sea level.
b. Military standard 3 hp engines will operate at elevations up to 10,000 feet (305 meters) at reduced ratings.
2-12
