operators_manual

switches may be available that can lock the
interaxle driveline and/or any combination
of the forward rear or rear-rear driving
axles. The interaxle differential switch
allows each axle to turn independently. In
certain situations, engaging the interaxle
differential lock relieves stress on the rear
axles and reduces tire wear. Engaging this
switch will also provide better traction in
slippery or loose gravel conditions.
In the LOCK position, continuous operation
on paved, dry surfaces, put stress on the
axles, and can possibly damage the
internal gears. The switch has a guard to
prevent accidental operation of the switch.
Locking the differentials 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 vehi-
cle or cause axle damage. Switch to LOCK
only when the wheels are not spinning. Fail-
ure 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). You can
select two rear axle ratios for operating
under heavy loads or rough terrain as well
as for over the road hauling.
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. You 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 Interaxle 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
interaxle 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.
DRIVING - Axle and Suspension
Y53-6096-1A1 (01/17) 115
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