Section IV. OPERATION UNDER UNUSUAL CONDITIONS

TM 5-4930-233-14

TM 4930-14/1

Section IV. OPERATION UNDER UNUSUAL CONDITIONS

2-9. OPERATION IN EXTREME COLD

General. You will have to take special precautions when operating the lubricating and servicing unit in

extremely cold temperatures. Lubrication, fuel, oil, electrical and compressed air systems, and care of

lubricants are all affected by cold weather operations.

Care of Lubricants. Keep lubricants in tightly closed containers and, if possible, in a protected place to insure

ease of handling. You must remove all snow and ice from the containers before opening them to transfer

lubricants to lubricant tanks or to guns.

Lubrication. During the cold weather, lubricants that are too heavy will make your vehicle hard to start and

difficult to operate. This will also cause rapid wear of the moving parts.

Electrical System. The large surges of electrical current required to start a cold engine demand good

electrical contacts. Inspect, clean, and tighten all connections, especially battery terminals.

Fuel Systems. In cold weather, condensation of moisture in the air will cause water to accumulate on tools,

in drums and containers. This water will freeze and form ice crystals, which clog fuel lines and carburetor

jets unless the following precautions are taken.

Use filter paper or other approved strainer when you fill the fuel tank or when you transfer fuel from

one container to another.

Remove snow or ice from the fuel tank filler cap and dispensing equipment before you fill the fuel tank.

Keep the filler cap tightened properly to keep moisture and dirt from the tank.

After filling or moving a fuel container, allow the fuel to settle before you fill the tank.

If possible, keep the fuel tank full when you operate the unit in extremely cold weather. This will

prevent condensation of moisture inside the tank.

Compressed Air System. Drain accumulated moisture from the compressed air reservoir as often as

necessary. The air reservoir is equipped with an air receiver drain valve that is operated by the lever

mounted on the reel cabinet assembly. When you open the air receiver drain valve, the water which has

collected at the bottom of the tank will be ejected.

Batteries. The batteries installed in the lubricating unit will give satisfactory service in extreme low

temperatures if you take care of them and keep them fully charged. If the lubricating unit is to remain idle for

any long length of time during the cold weather, disconnect the batteries and store them in a warm place.

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