operators_manual

internal gears. The switch has a guard to
prevent accidental operation of the switch.
Locking the dif
ferentials is typically used
during ice or snow conditions and without
tire chains, unpaved roads that have loose
sand, mud or uneven surfaces. Look
ahead and predict when the differential
needs to be locked. Stop the vehicle and
lock the differentials before approaching.
While using the differential in the locked
position, do not exceed 25 mph (40 km/h).
When disengaging the differential lock,
reduce the throttle to prevent drivetrain
damage.
WARNING
DO NOT put the differential lock in the
LOCK position while the wheels are
spinning freely (slipping), you could
lose control of the vehicle or cause
axle damage. Switch to LOCK only
when the wheels are not spinning.
Failure to comply may result in death,
personal injury, equipment or property
damage.
Dual Range (Two-Speed) Rear Axle
Your vehicle may be equipped with a two-
speed or dual range axle (option). The low
range provides maximum torque for
hauling heavy loads or traveling over rough
terrain. The high range is a faster ratio for
highway speeds and general over-the-road
conditions. A switch on the accessory
switch panel controls the dual range rear
axle. Y
ou will notice that the switch has a
guard to protect you from activating it
accidentally. Always park your vehicle with
the range selector in LOW.
Important tips on operating a dual range
axle with inter-axle differential:
• Shift the axle with the inter-axle
differential in the unlocked position
only.
• When you are driving with poor
traction, lock the differential. When
you have the differential locked,
drive with the axle in LOW range
only.
• When you are driving on a surface
with good traction, keep the inter-
axle differential unlocked. You can
drive with the axle in the LOW or
HIGH range.
• Always UNLOCK the inter-axle
differential before shifting the axle
speed range.
WARNING
Never shift the axle when moving
downhill.
Engine driveline disengage-
ment may occur, eliminating engine re-
tardation and allowing the wheels to
spin faster than the current speed of
the engine. This may require severe
braking to slow the vehicle down and
can result in an accident. Failure to
comply may result in death, personal
injury, equipment or property damage.
CAUTION
If you shift the axle range with the in-
ter-axle
differential in LOCK, you could
seriously damage the axles. Never
shift the axle range with the differential
locked.
DRIVING - Axle and Suspension
Y53-6096-1C1 (09/20) 123
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