freightliner PX113064S T 2016, Руководство пользователя

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•
the vehicle is in reverse gear.
If the hold function is active for four minutes, the
window shown in
Fig. 11.8 appears on the ICU
warning the driver to engage the park brake. An
audible alarm activates at the same time and repeats
every minute until the park brake is set.
The same warnings are triggered if the hold function
is active and:
•
the ignition is turned off without the park brake
being set, or
•
the brakes are not strong enough to hold the
vehicle in place and it starts rolling.
If a door is opened without the park brake being set
when the hold function is active, the horn sounds
and a visual warning activates on the driver display.
If the seat occupancy sensor registers an empty seat
under the same conditions, the same warnings are
triggered. Warnings cease when the condition that
triggered the warning is corrected.
Air Brake System
A dual air brake system consists of two independent
air systems that use a single set of brake controls.
Each system has its own reservoirs, plumbing, and
brake chambers. The primary system operates the
service brakes on the rear axle; the secondary
system operates the service brakes on the front axle.
Service brake signals from both systems are sent to
the trailer.
WARNING
Do not operate the vehicle with the front brakes
backed off or disconnected. Backing off or
disconnecting the front brakes will not improve
vehicle handling and may lead to loss of vehicle
control, resulting in property damage or personal
injury.
Air Brake System, General
Information
The psi of both the primary and secondary system
appear on the brake air gauge on the driver display,
shown in
Fig. 11.9.
If air pressure drops below approximately 70 psi (483
kPa) in either system, a warning telltale illuminates.
See
Fig. 11.10. If the park brake is not set, an
audible alert also activates.
If the low air pressure warning displays, check the air
pressure gauges to determine which system has low
air pressure. Although the vehicle’s speed can be
reduced using the foot brake control pedal, either the
front or rear service brakes will not be operating at
full capacity, causing a longer stopping distance.
Bring the vehicle to a safe stop and have the air
system repaired before continuing.
IMPORTANT: In the event of a total loss of
service brakes with full system air pressure, use
the parking brake control valve (yellow knob) to
bring the vehicle to a complete stop in the
safest location possible.
Before a vehicle with insufficient brake system air
pressure can be moved, the spring parking brakes
f612018 03/18/2022
Fig. 11.8, Engage Park Brake Message - ICC5
f612068 04/26/2022
Fig. 11.9, Brake Air Gauge on Driver Display
f612069 04/26/2022
Fig. 11.10, Low Brake Air Pressure Telltale
Brake Systems
11.4