TM 9-2320-303-10
2-39.
OPERATE ON SNOW OR ICE (Con't).
(i)
If a difficult stretch of road approaches, stop and inspect it carefully
before driving on it. Select transmission gear range that best suits road condition and place
interaxle lockout control valve lever in LOCK position.
NOTE
Shifts from Neutral (N) to Drive (D) or to Reverse (R) cannot occur if
engine speed is above idle. Reduce engine speed to idle and shift
again.
(j)
If vehicle becomes stuck or tires start spinning, it may be possible to
rock vehicle out. Lock interaxle lockout and shift transmission to D (Drive). Apply light,
steady throttle (never full throttle). When vehicle has moved as far as it will go, apply service
brakes and allow engine to return to idle speed. Shift transmission to R (Reverse). Again,
apply light, steady throttle and allow vehicle to move rearward as far as it will go. Apply
service brakes and allow engine to return to idle speed. This procedure can be continued as
long as each directional shift moves vehicle a greater distance. If not, vehicle should be
towed from its position.
(2)
Stopping.
(a)
Ease up on accelerator, leaving vehicle in gear.
(b)
Apply service brakes lightly and evenly DO NOT pump service
brake pedal.
WARNING
Do not use engine brake if road surfaces are slippery. Using engine
brake on wet, icy, or snow covered roads could result of loss of vehicle
control. Failure to follow this warning could result in death or injury to
personnel or damage to equipment
(c)
Always avoid sudden braking and use of engine brake on slick
roads.
CAUTION
Care must be exercised if tractor or trailer ABS light comes on while
driving, possibly indicating an ABS malfunction. Although the
regular/normal vehicle system is still fully operational, you should
continue at a speed no greater than 40 mph (64 kph), until the mission
is complete. When the mission is complete, report to Unit Maintenance
to clear the ABS fault and restore full ABS capabilities.
(d)
During emergency or reduced traction stops, press brake pedal fully
until vehicle comes to a safe stop. DO NOT PUMP brake pedal. With brake pedal fully
depressed, ABS will control all wheels to provide steering control and a reduced braking
distance.
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