Driver Controlled Differential Lock (Dcdl); Operation Tips; Locking The Dcdl; Unlocking The Dcdl - PREVOST X3-45 COACH 2018 Operator's Manual

In the case where a vehicle equipped with the
ESC system pulls a trailer, the latter must be
equipped with ABS.
CAUTION
Even with ESC-equipped vehicles, the driver
remains responsible for ensuring vehicle
stability during operation.
NOTE
For further details,
ABS Operator's Manual".
DRIVER CONTROLLED DIFFERENTIAL
LOCK (DCDL)
NOTE
The DCDL system is not available on vehicles
equipped with a ZF A-132 drive axle.
By actuating the electric switch, the driver can
lock or unlock differential action.
The purpose of the DCDL is to provide
maximum vehicle traction and control on
unfavorable road surfaces. When the DCDL is
actuated, a clutch collar completely locks the
differential case, gearing, and axle shafts
together. This feature maximizes traction to both
wheels. The lock position will also protect
against spinout damage to the differential. The
DCDL should not be actuated when favorable
road conditions exist.

OPERATION TIPS

1. The DCDL can be locked or unlocked if the
vehicle is standing still or moving at a
constant low speed when the wheels are not
spinning, slipping, or losing traction.
2. When the DCDL is locked, operate the
vehicle at low speeds. DCDL will not engage
and will disengage in speed higher than 5
MPH (8 km/h).
3. When the DCDL is locked, the vehicle's
turning radius will increase. This condition is
called "understeer." The driver must use
caution, good judgment and drive at low
speeds when operating the vehicle with the
DCDL locked.
consult " Bendix
PA1627 X3-45 Operator's Manual
Other Features
4. Always unlock the DCDL as soon as the
need for maximum traction has passed and
the vehicle is traveling on a good road.
5. Do not lock the DCDL when the wheels are
slipping or losing traction, or damage to the
axle can result.
6. Do not lock the DCDL when the vehicle is
traveling down steep grades, or potential
loss of vehicle stability could occur.

LOCKING THE DCDL

When encountering poor road conditions where
maximum traction is
recommended procedures:
1. Without the wheels spinning, slipping or
losing traction, flip the DCDL control switch
to the "LOCK" position while maintaining a
constant vehicle speed.
2. Let up momentarily on the accelerator to
relieve torque on the gearing, allowing the
DCDL to lock.
3. When the DCDL is fully locked, the vehicle
will have an "understeer" condition when
making turns. Proceed cautiously over poor
road conditions.

UNLOCKING THE DCDL

When the vehicle can safely operate and driving
conditions have improved, disengage the DCDL
following the recommended procedures:
1. Flip the control switch to the "UNLOCK"
position, when the vehicle is stopped or
when traveling at low speed while the
wheels are not spinning, slipping or losing
traction.
2. Let up momentarily on the accelerator to
relieve torque on the gearing, allowing the
DCDL to unlock.
3. Resume driving at normal speed using good
driving judgment.

KNEELING SYSTEM

This system lowers the front end, enabling
passengers to get on and off the coach without
any difficulty.
NOTE
This coach is equipped with an interlock
system which automatically
5-25
needed, follow the
applies the