TM 9-2320-283-10
SNOW AND ICE
If you have to operate the M915A1 truck in snow or on icy surfaces, follow the guidelines
below:
D R I V I N G
ACCELERATE SLOWLY to avoid spinning the tires.
DRIVE AT SLOWER SPEEDS.
GIVE SIGNALS SOONER.
LIGHTLY APPLY BRAKES ONCE OR TWICE TO GIVE EARLY WARNING OF IN-
TENTION TO STOP. This will also help to avoid skidding.
MAINTAIN AT LEAST DOUBLE THE NORMAL DISTANCE FROM THE VEHICLE
AHEAD.
KEEP WINDSHIELDS, WINDOWS, MIRRORS, HEADLAMPS, STOPLAMPS, AND
BODY LAMPS CLEAN AND FREE OF SNOW AND ICE. Use defrosters and fans
to help keep glass free of snow and ice.
DESCEND MODERATE GRADES IN THE GEAR RANGE YOU WOULD NORMAL-
LY USE TO ASCEND THE SAME GRADE. ON STEEP OR VERY SLIPPERY GRADES,
LOCK DIFFERENTIAL, USE AT LEAST ONE GEAR RANGE LOWER AND ACTIVATE
ENGINE RETARDING SYSTEM.
After driving through slush or water, drive slowly and test the brakes. Keep driving
slowly, maintaining moderate pressure on the service brake pedal to create a slight
drag. When you are sure that your brakes are dried out and operating properly,
resume normal speed.
If you come to a difficult stretch of road, stop and inspect it carefully before driving
on it. SELECT THE TRANSMISSION GEAR RANGE THAT YOU FEEL IS MOST
LIKELY TO GET YOU OVER THAT STRETCH OF ROAD AND LOCK DIFFERENTIAL.
If tires start spinning, stop, back up, and try again. If necessary, try rocking out
by locking the differential, shifting to gear range 1-5 and accelerating lightly. Shift
into reverse when your truck’s forward motion stops. Repeat this alternate shifting
and acceleration until your truck can use the momentum created by the rocking
motion to rock out of the slippery area. Make every effort not to spin tires and do
not exceed 800-900 engine rpm.
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