Rear Wheel Anti-Lock Brake System; Intermediate Cable Replacement; Rear Wheel Anti-Lock Brake System (Rwal) - Dodge D150 1990 Service Manual

Rear wheel drive ram truck

Table of Contents

INTERMEDIATE CABLE REPLACEMENT

(1) Remove the adjusting nut from the front cable.

(2) Disengage the intermediate cable from the ratio

lever or cable equalizer.

(3) Remove the cable.

(4) Connect the new cable to the ratio lever or ca-

ble equalizer.

(5) Connect the cable to the adjusting link.

(6) Instert the front cable i n the adjusting link and

and install the cable adjusting nut.

(7) Adjust the brakeshoes i f necessary.

(8) Adjust the parking brake cable as described i n

this section.

R E A R W H E E L ANTI-LOCK B R A K E S Y S T E M (RWAL)

General Information

System Components

System Operation

GENERAL INFORMATION

A rear wheel anti-lock brake system is standard

equipment on all A D models. I t i s a n electronically

operated system designed to retard rear wheel lockup

during periods of high wheel slip and deceleration.

Retarding lockup i s accomplished by modulating

fluid pressure to the rear brsjke units.

Rear brake fluid apply pressure i s modulated ac-

cording to wheel speed, degree of wheel slip and rate

of deceleration. A sensor located i n the rear axle

housing converts differential case rotating speed into

electronic signals. T h e signals are transmitted to the

electronic brake control module for processing. The

control unit determines rate of deceleration and

wheel slip from these signals.

SYSTEM COMPONENTS

Basic system components

include a n electronic

brake control module, a hydraulic pressure control

valve, a speed sensor and exiter ring and a n anti-

lock indicator lamp (Fig. 1).

Fig. 1 Rear Wheel Anti-Lock Brake System (RWAL)