378 OPERATION
AXLES
Differential Locks
DANGER
DO NOT drive on dry, paved surface
with the differential locks engaged. The
vehicle will strive to maintain a straight
line. Taking a curve with the differential
locks engaged may cause an accident,
leading to serious personal injury or
death.
CAUTION
Never operate the vehicle with the
differentials locked any longer than is
necessary, as this places a great strain on
the axles and may cause rapid tire wear.
Under normal traction conditions, do not engage the differential locks. If at all possible, do
not use the differential locks while taking a curve. With good traction and the differential
locks engaged, the vehicle will be understeered and therefore will tend to drive straight in a
curve. When using locks on good traction surface, drive cautiously and do not exceed 40
km/h (25 mph). Disengage the locks as soon as possible.
When the differential locks are disengaged, the couplings may be under tension. Disengage
the locks by returning the switch to the OFF position. Help with the disengagement by
briefly letting up on the accelerator to relieve the torque on the couplings.
The drive axle(s) may be equipped with differential locks. The single drive axle will
only have a wheel differential lock. With tandem drive axles, there could be both wheel
differential locks and an inter-axle differential lock.
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