OPERATION UNDER UNUSUAL CONDITIONS
1. This section contains special instructions for operating and servicing the towing device under
2. In addition to performing all the usual PMCS procedures, special care must be taken in regard to
cleaning and lubrication when extremes in temperature, humidity, and terrain conditions are
present or anticipated. Proper cleaning, lubrication, storage, and handling ensures proper
operation and function and guards against excessive wear.
3. When chronic failure of material results from subjection to extreme conditions, report the
condition on SF Form 368.
OPERATION IN EXTREME COLD
Oil level must be checked in cold temperatures after fifth wheel towing device has
been winterized and removed from maintenance facility. Damage to equipment may
occur if oil level is not maintained.
a. Insulation may crack and cause electrical short circuits. Construction materials can become
hard, brittle, and easily damaged or broken. Handle construction materials with care in
b. Refer to FM 9-207 and FM 21-305 for special instruction on driving hazards in extreme cold.
Refer to WP 0039 for proper lubrication during extreme cold weather conditions.
2. At-Halt Parking
a. When parking short term, park in a sheltered area out of the wind.
b. When parking long term, prepare a footing of planks or brush if high, dry ground is not
Remove all buildup of ice and snow as soon as possible after shutdown.
d. Cover and shield the towing device with canvas covers if available. Keep ends of covers off
the ground to keep them from freezing to the ground.