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Brake System Warnings, Indicators, and Messages
Telltale
Color
Description
Driver Display
Amber
Wheel Spin Event
Flashing indicates a wheel spin event has
been detected, and the ATC system is active.
N/A
ATC Deactivated
Indicates the ATC SPIN button has been
pressed to allow wheel slip.
Green
Engine Brake
Indicates the engine brake is enabled.
N/A
Table 15.1, Brake System Warnings, Indicators, and Messages
IMPORTANT: In the event of a total loss of ser-
vice brakes with full system air pressure, use
the parking brake control valve (yellow knob) to
bring the vehicle to a complete stop in the saf-
est location possible.
Before a vehicle with insufficient system air pressure
can be moved, the spring parking brakes must be
released by applying an external air source at the
gladhands, or by manually caging the parking brake
springs.
WARNING
Do not release the spring parking brakes and
then drive the vehicle. There would be no means
of stopping the vehicle, which could result in se-
rious personal injury or vehicle damage. Before
releasing the spring parking brakes, make the
connection to a towing vehicle or chock the tires.
After correcting the brake system problem, uncage
the spring parking brakes before resuming normal
vehicle operation.
Loss of air pressure in the primary air system causes
the rear service brakes to become inoperative. The
secondary air system will continue to operate the
front brakes and the trailer brakes (if equipped).
Loss of air pressure in the secondary air system
causes the front axle brakes to become inoperative.
The primary air system will continue to operate the
rear service brakes and the trailer brakes (if
equipped).
Brake System Operation
Before driving your vehicle, allow time for the air
compressor to build up a minimum of 100 psi (689
kPa) pressure in both the primary and secondary
systems. Monitor the air pressure system by observ-
ing the air pressure gauges and the low-air-pressure
warning light and buzzer. The warning light and
buzzer shut off when air pressure in both systems
reaches approximately 70 psi (483 kPa).
NOTE: The buzzer sounds only when the park
brake is released.
IMPORTANT: Before driving the vehicle, secure all
loose items in the cab so that they will not fly forward
during a full brake application. Make sure all passen-
gers are wearing seat belts.
During normal brake stops, depress the foot brake
control pedal until braking action slows down the ve-
hicle. Increase or decrease the pressure on the
pedal so that the vehicle comes to a smooth, safe
stop. Apply the spring parking brakes if the vehicle is
to be parked.
IMPORTANT: An air brake proportioning system
may be used in tractor air brake systems when
the vehicle is not equipped with antilock braking
system (ABS). When operating in bobtail mode,
the rear brake chambers (on which the axle
Brake Systems
15.2
Содержание Freightliner Cascadia 2021
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Страница 189: ...10 Cab and Sleeper Features Windows 10 1 Mirrors 10 1 Cab Amenities 10 1 Sleeper Amenities 10 2...
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Страница 227: ...15 Brake Systems Air Brake System 15 1 Meritor WABCO Antilock Braking System 15 4 Engine Brake 15 6...
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Страница 251: ...18 Manual Transmissions and Clutch Eaton Fuller Manual Transmissions 18 1 Clutch 18 1...
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Страница 255: ...19 Drive Axles Interaxle Lock Tandem Axles 19 1 Driver Controlled Differential Lock DCDL 19 2...
Страница 269: ...21 Trailer Couplings Holland Trailer Coupling 21 1...
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Страница 311: ...27 Telematics Data Telematics Information Terms of Use 27 1 Frequency Bands and Maximum Transmission Output 27 3...
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