Back Up Alarm; Kneeling System; Hi-Buoy System; Low-Buoy System - PREVOST Motorcoach XL Series Operator's Manual

FIGURE 68: Front valve location
These two air system emergency fill valves are
fitted with the same valve stems as standard tires,
and can be filled by any standard external air
supply line.
The rear air system emergency fill valve will
supply air for all systems (brakes, suspension and
accessories) while the front fill valve will supply air
for accessories and suspension only.
CAUTION:
Air filled through these two points
will pass through the standard air filtering system
provided by Prévost. Do not fill air through any
other points.

BACK UP ALARM

The back up alarm system serves to warn
bystanders of vehicle moving in reverse range.
Driver should take extra precautions when
backing up. If in doubt, have someone guide you.

KNEELING SYSTEM

This system enables passengers to get on and off
the coach without any difficulty by lowering the
front end. The system operates rapidly; taking
only 5 seconds to lower and 9 seconds to raise.
NOTE:
This coach is equipped with an interlock
system which will automatically apply 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 L.H. side control panel (Item #12
on page 2-4). The parking brake will be
automatically applied and a warning flasher (item
#1 on page 2-7) will 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.
rapidly rise up. Release the parking brake, and
shift transmission to the desired range.
CAUTION
the sidewalk or other obstacles that could damage
the coach during kneeling operations.
NOTE:
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 SYSTEM

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The coach can be equipped with a front Hi-Buoy
or full Hi-Buoy.
The front Hi-Buoy system has the same functions
as front kneeling. It enables passengers to get on
or off the coach easily by raising the front end
about 4 inches (100 mm). The front Hi-Buoy is
combined with front kneeling to increase flexibility
of the system (See item #12 on page 2-4).
The full Hi-Buoy system raises both the front and
rear sections of the coach about 4 inches (100
mm). It can be used to enable passengers to get
on or off the coach easily, to safely travel roads
with high obstacles and to board Ferry Boats etc.
(see item #12 on page 2-4 and indicator light #1
on page 2-7).
NOTE:
when the coach is traveling over 5 mph (8 km/h).
Consequently, the driver cannot inadvertently
operate the Hi-Buoy system at higher speed.

LOW-BUOY SYSTEM

This system lowers both the front and the rear
sections of the coach about 4 inches (100 mm). It
enables the coach to drive through underpasses
where the height is less than 130.7 " (3.3 m), the
ground is level and your vehicle is equipped with
standard tires.
Operation of the Low-Buoy is controlled by a valve
(Item #4 on page 2-22) located on the R.H. lateral
console.
LOW-BUOY or NORMAL positions. The coach
will be lowered automatically.
(item #1 on page 2-7) on the central dashboard
will indicate that the coach is being lowered.
3 - 3
The front end will
: Avoid parking the coach too close to
The kneeling system does not operate
The Hi-Buoy system does not operate
The valve can be switched to either
SAFETY
A warning light