PREVOST X3-45 2011 Operator'S Manual Download

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Other Features

110

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.

4. Always unlock the DCDL as soon as the

need for maximum traction has passed and
the vehicle is traveling on a good road or
highway.

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 or highway
conditions where maximum traction is needed,
follow the 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 or highway 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 applies the
parking brake when the kneeling system is
activated.

To operate, stop the coach, set the transmission

to neutral (N), then push down the rocker switch

located on the dashboard. (Refer to "Controls &

Instruments" chapter). The parking brake will be

applied automatically and a status line

pictogram will appear on the DID to indicate that

the front of the coach is being lowered.
To raise the front of the coach to its normal

height, push up the rocker switch. The front end

will rapidly rise up. The system will release the

parking brake and shift the transmission to the

previously selected range.

CAUTION

Avoid parking the coach too close to the
sidewalk or to other obstacles which could
damage the coach during kneeling.

NOTE

Kneeling is disabled when the entrance door
is open.

NOTE

The kneeling system does not operate when
the coach is traveling over 5 mph (8 km/h).
Consequently, the driver cannot inadvertently
operate the kneeling system at higher speeds.

HI-BUOY

The coach may be equipped with the optional
front Hi-Buoy or full Hi-Buoy. The front Hi-Buoy
system has the same functions as front
kneeling. In addition it enables passengers to
get on or off the coach easily by raising the front
end about 4 inches (100 mm), which may prove
useful when the dock is higher than usual. The
front Hi-Buoy is combined with front kneeling to
increase flexibility of the system. Refer to
"Controls & Instruments" chapter.

The full Hi-Buoy system raises the whole coach
about 4 inches (100 mm). It can be used to