BW8207 Bendix Global Scalable Brake Control (GSBC) System Operator’s Manual 16
BENDIX GSBC SYSTEM FEATURES
SERVICE BRAKING
The Bendix® GSBC® system provides service brake control for air braked vehicles. To
control the service brakes, the driver’s movement of the foot brake pedal is translated
into an electronic signal that directly controls the air pressure sent to each controlled
foundation brake.
TRAILER BRAKING
The advantages also extend to braking control of trailers. The driver’s movement of
the foot brake pedal is translated into an electronic signal that directly controls the
air pressure sent to the trailer. This pressure is automatically monitored to change
the relative braking between the power unit and the trailer(s), reducing trailer “push”
or “pull.” This feature also reduces the risk of excessively wearing brake friction on
either the power unit or the trailer due to vehicle incompatibility.
ANTILOCK BRAKING SYSTEM ABS
Bendix® ABS is a feature for vehicles equipped with a Bendix® GSBC® system that is
an electronic control that improves vehicle stability and steerability by preventing
wheel lock during braking.
The ABS feature monitors wheel rotation, and if it detects any wheel locking up, the
feature automatically reduces the brake pressure at that wheel. If necessary, ABS
automatically modulates braking pressure at one (1) or more of the wheel ends. The
feature may help to maintain lateral stability by preventing wheel lock during braking.
This simulates a driver pumping the brakes. However, ABS is able to pump the brakes
on individual wheels (or pairs of wheels), independently, and with greater speed and
accuracy than a driver.
During normal operation, do not pump your brakes. Use steady, even brake
applications. Refer to the Important Safety Information about Bendix ABS section on
page 17 for more details.
If you are towing a vehicle that is not equipped with ABS, you may need to
modulate your braking applications in some instances. Refer to the Towed
Vehicles without ABS section on page 18 for more information.
If the Bendix® ABS feature has faulted which is indicated by the applicable
warning lamp on the dash (see Dash Indicator Lamp - Faulted section on
page 15), the feature will not be able to lock or unlock wheel ends without
driver intervention. In this scenario, driver modulation (or pumping) of the
brakes to prevent wheel end lockup may be necessary.
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