Extreme Cold Weather.

TM 9-2320-273-10

2-21. Extreme Cold Weather.

The M915 thru M920, like other vehicles, need special attention and care during periods

of extreme cold weather. Remember that in extreme cold:

thicken.

Batteries may lose power or freeze.

Electrical insulation can crack causing short circuits.

Fuel may not combine properly with air to form the necessary mixture for starting

the engine.

Metals and other materials may become hard or brittle.

The cooling system requires adequate protection from extreme cold.

Fuels, lubricants, and antifreeze compounds require special storage, handling,

and use.

YOU should READ AND BECOME FAMILIAR WITH THE MATERIAL IN THE

FOLLOWING PUBLICATIONS. They cover information you will need to know for

operating a vehicle in extreme cold.

TB 750651

TM 9-207

TM 750-254

FM 31-70

FM 31-71

FM 31-72

The transmission is equipped with strip heaters to warm the transmission during cold weather.

The strip heaters are thermostatically controlled for automatic operation at temperatures

below 5F. The indicator light on the console lights when the strip heaters are on. Do not

operate the transmission until the indicator light goes off.

When you operate the M915 thru M920 trucks in extreme cold, keep in mind the problems

characteristic of operation in cold weather, and make sure your truck is adequately prepared

and protected for the existing weather conditions. Follow these guidelines when you oper-

ate the M915 thru M920 in conditions of extreme cold:

WINTERIZATION

KIT

All trucks assigned to Arctic regions are equipped with a winterization kit which protects

the truck systems from freeze damage and enables easier starting. The kit consists of:

Engine coolant heater (thermostatically controlled)