BENDIX SD-13-4793 Manual de usuario descargar pdf (Pagina 2)

FIGURE 2 - WHEEL AND AXLE CONTROL SYSTEMS

They are as follows;

Identiﬁ cation Air Line Connection

1 Supply

(incoming air from foot valve or relay)

2 Delivery

(air delivery to service actuators)

3 Exhaust

(air exhaust during antilock control)

OPERATION

NON-ANTILOCK APPLICATION (FIGURE 3)

During normal non-antilock braking, both solenoids are

de-energized (no electrical power). Brake application air

enters the supply port of the modulator and ﬂ ows to, and

through, the open exhaust solenoid then to the exhaust

diaphragm. Air pressure, along with spring force, seats

the exhaust diaphragm on the exhaust passage thus

preventing the escape of service air. Simultaneously,

application air ﬂ ows to the supply diaphragm and forces it

away from its seat. Air ﬂ ows past the open supply and out

the modulator delivery port to the service brake chambers.

REAR AXLE SYSTEMFRONT AXLE SYSTEMS

AXLE CONTROLWHEEL CONTROL WHEEL CONTROL

SERVICE BRAKE

CHAMBER

M-21

™

OR M-22

™

MODULATOR

M-21

™

OR M-22

™

MODULATOR

QUICK RELEASE VALVE

M-21

™

OR M-22

™

MODULATOR

SERVICE BRAKE

CHAMBER

SERVICE &

SPRING BRAKE

CHAMBER

QUICK RELEASE VALVE

ANTILOCK

CONTROLLER

CONTROLLER/

RELAY ASSEMBLY

M-21

™

OR M-22

™

MODULATOR

M-21

™

OR M-22

™

MODULATOR

ANTILOCK

CONTROLLER

ANTILOCK

CONTROLLER

ANTILOCK

CONTROLLER

TO ANTILOCK

CONTROLLER

NON-ANTILOCK HOLD (FIGURE 4)

When the desired air pressure is attained in the service

brake chambers, the brake system is in the holding position.

In the holding position both solenoids in the modulator

remain de-energized and the balance of the internal

components remain in the same position as they assumed

during application.

1 2 3 4 5 6 7 ... 11 12

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BENDIX SD-13-4793 Manual de usuario Pagina 2

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