AUTOCAR Xspotter 2014, Руководство оператора

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•
There will be a fluctuation in the air
pressure gauges.
• The engine may stall if the operator
attempts to put the vehicle in motion.
WARNING
Never attempt to disassemble or tamper
with the park brake chamber. The force
stored in the spring, if suddenly released,
can cause serious personal injury or
death.
Anti-Lock brake System (AbS)
The vehicle has a standard air brakes, and
may be equipped with an Anti-Lock Brake
System (ABS). ABS monitors wheel speed
continuously, but is not involved in controlling
the wheel speed unless there is an emergency.
In normal braking applications, the standard air
brake system is in effect.
WARNING
For proper AbS operation, do not change
tire sizes. The size of the tires installed
during production are programmed into
the electronic control unit. Installing
different size tires could result in a
reduced brake force, leading to longer
stopping distances.
There is a sensor installed in each wheel
on a monitored axle. The sensors transmit
information to the ABS control module. The
module interprets the signals and calculates
wheel speed, wheel retardation and a vehicle
reference speed. If the calculations indicate a
wheel lock-up situation, a signal is sent from
the control module to the appropriate ABS
modulator valve to reduce braking pressure.
During emergency braking, the modulator valve
alternately reduces, increases or maintains
air pressure in the brake chamber to prevent
wheel lock-up.
During emergency or reduced-traction stops,
fully depress the foot brake pedal until the
vehicle comes to a safe stop. DO NOT PUMP
the brake pedal. With the brake pedal fully
depressed, the ABS will control all wheels to
provide steering control and a reduced braking
distance.
Although the ABS improves vehicle control
during emergency braking situations, the
operator still has the responsibility to change
driving styles depending on the existing traffic,
road and/or weather conditions. For example,
the ABS cannot prevent an accident if the
driver is speeding or following too closely on
slippery surfaces.
The ABS control unit contains a self-testing
program that is engaged each time the ignition
is turned on. The operator can verify the testing
by listening for the ABS modulator valves
actuating twice in series. To increase the
sound, hold down the foot brake pedal when
the ignition is turned on. The self-test is not
finished and the ABS Lamp (Figure 122) will
stay on until the vehicle has started to move.
The wheel speed sensors are tested when the
vehicle starts to move. If they are testing OK,
then the lamp will go out at approximately
5 mph (8 km/h).
AWE 00054 Rev. 002 85
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ACTT Xspotter Operator Manual