OPERATION IN EXTREME HEAT.

TM 5-4930-233-14

TM 4930-14/1

Towing in Extreme Cold.

Be careful when placing the trailer in motion after a shutdown. Congealed lubricants can cause part

failure.

Tires may be frozen to the ground or have a flat spot if they were underinflated.

Brake shoes may be frozen to the drums and will require preheating to avoid damage.

Refer to FM 9-207 and FM 21-305 for special instructions on driving hazards in snow and ice that may

be encountered during extremely cold weather conditions.

At-Halt Parking.

For short shutdown periods, park in a sheltered spot out of the wind.

For long shutdown periods, if high, dry ground is not available, prepare a footing of planks or brush.

Remove all built up ice and snow as soon as possible after shutdown.

2-10. OPERATION IN EXTREME HEAT.

When operating in extremely high temperature, efficient cooling and adequate lubrication of the engine and air

compressor is vitally important. The cooling system must be checked frequently to make sure the air circulation is

not impaired. Give special attention to the engine shrouds and fins for cleanliness. Inspect the carburetor air

cleaner frequently. Lubricate more frequently than specified in the lubrication instructions (para 3-2).

2-11. OPERATION IN DUSTY OR SANDY AREAS.

Operation of the lubricating and servicing unit in sandy or dusty areas will require more frequent inspections and

lubrication of the unit. Fine sand can penetrate into bushings and bearings. Remove accumulations of sand and

dirt at frequent intervals. Inspect the engine and compressor shroud and fins for clogging or impairment of air

circulation. Check the fuel system and take all necessary precautions to prevent sand from entering the fuel tank.

During shutdown periods, fasten all housing doors securely.

2-12. OPERATION UNDER RAINY OR HUMID CONDITIONS.

Operation of the lubricating and servicing unit under rainy or humid conditions requires that special attention be

given to exposed machined parts. A thin coat of oil should be applied to all exposed machined parts to keep them

as free of moisture as possible. High moisture content in the air may cause difficulty in the electrical system. The

spark plug, magneto, and wiring can become unserviceable due to high humidity. Clean and dry affected parts at

frequent intervals.

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