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Our standard
antilock system is the Meritor WABCO 4S/4M (4 sensor/4
modulator) with a separate trailer system. It is
incorporated into the air system and fully functional.
Bendix antilock brake training is an option.
General
Operation:
Tooth wheels
are driven with 12-Volt DC motors (one at each axle).
Sensors, along with the tooth wheel, create an AC output
signal to the ECU. At the push of a button the motor
spins the tooth wheel to 60 MPH. Depressing the button a
second time brings the wheel speed down to 20 MPH in 1.5
seconds and gradually to a stop. This rapid
deceleration triggers a wheel lock-up situation and the
antilock system functions the same as tires skidding on
ice.
 A
second button triggers a traction control feature. Push
the button twice and the drive axle spins over 60 MPH
while the steer axle remains stopped. This sudden wheel
spin triggers the traction control and applies brakes to
the spinning wheel. The entire system works just like it
would on a vehicle.
Features:
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Engine
Simulator provides input for the traction control
feature.
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Electronic
control panel mounted on the back of the display
provides control of the tooth wheel motors at the
touch of a button.
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All
components, speed sensors, wiring, electronic
control units, ATC valve and modulators are mounted
and functional.
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Labels
identify the wires by color code, location and pin
connections at the ECU.
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A J1587
diagnostics port provides the hook-up for laptop
computer diagnostics or ProLink test equipment.
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Blink code
switch provides the ability to test the system
without computers. Lights for both the ATC and
antilock functions are mounted on the face of the
panels.
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Maintenance and training manuals, slide charts, and
training videos are available.
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