BENDIX M-21-M-22 ANTILOCK MOD ASSY Especificaciones descargar pdf (Pagina 6)

1 Introduction

Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)

The type of axle determines sensor mounting location.

앫 Steering axle sensors are installed in the steering knuckle or in a

bolted-on bracket.

앫 Drive axle sensors are mounted in a block attached to the axle

housing or in a bolted-on bracket.

Check the wheel speed sensors for correct alignment and

adjustment. Apply lubricant to the sensor and sensor clip whenever

wheel-end maintenance is performed. Make sure tooth wheels are

free of contaminants. Refer to Section 3 and Section 4 for more

information.

Pressure Modulator Valves

A modulator valve controls air pressure to an affected wheel-end

brake during an ABS, RSC or ESC event to reduce speed and

prevent wheel lock up. Modulator valves are also used during ATC

events to properly gain traction on the affected wheel end.

Figure 1.4.

Figure 1.4

A modulator valve is usually located on a frame rail or cross member

near the brake chamber or as part of a valve package. A valve

package combines two modulator valves, a service relay

(Figure 1.5) or quick release valve (Figure 1.6), and depending on

the vehicle configuration, an active braking valve (ABV).

Figure 1.5

Figure 1.6

Easy Listening Tip!

To ensure the ABS valves are working — just listen! Figure 1.7.

1. Apply the brakes.

2. Turn on the ignition.

3. Wait for the ABS indicator lamp to come on.

Figure 1.4

Figure 1.5

BAYONET-STYLE

CONNECTOR

AIR IN

(PORT 1)

AIR OUT

(PORT 2)

4003992b

PRODUCT

IDENTIFICATION TAG

1002011a

Figure 1.6

472 500 30. 0

MADE IN GERMANY

001 20/98

1003359a

1 2 3 4 5 6 7 8 9 10 11 ... 97 98

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BENDIX M-21-M-22 ANTILOCK MOD ASSY Especificaciones Pagina 6

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