TM 5-4310-376-14
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
2-8. GENERAL
Operation of the air compressor under unusual conditions presents problems that demand
special precautions and care in servicing the equipment.
2-9. OPERATION IN UNUSUAL WEATHER
a. Extreme Cold
(1) FUEL SYSTEM - Condensation will cause formation of ice crystals in partially filled
tanks. These crystals will clog fuel lines and carburetor jets unless the following precautions
are taken.
(a) Immediate area should be heated, since condensation will cause water to accumulate
around compressor valves, which will freeze, locking and damaging the valves.
(b) When equipment is not in operation, provide protection from direct exposure to
weather.
(c) Before attempting to start engine, set choke at part-choke position. A slightly richer
fuel mixture, obtained by turning carburetor needle valve 1/8 turn counterclockwise, will usu-
ally improve cold starting.
(d) Remove ice from fuel tank filler cap and dispensing equipment before filling tank.
(e) Use filter paper, chamois, or any comparable strainer when filling tank.
Provide metal-to-metal contact between fuel tank and
fuel container to avoid possibility of a static spark ignit-
ing the fuel.
(f) Fill tank frequently to keep it full. This helps prevent moisture from forming in tank.
(2) LUBRICATION - Lubricate in accordance with cold weather instructions contained in
Lubrication Chart in Chapter 3, Section I.
(3) AIR DISCHARGE SYSTEM - At low temperatures, air hose will become brittle. Avoid
excessive handling and kinking.
(4) AIR RECEIVER SYSTEM - Drain condensation from air receiver tank before shutdown
while compressor is still warm.
thin enough to furnish proper lubrication.
