Removal and installation

Controller

NOTE: If the CAB needs to be replaced, the rear axle type and tire revolutions per mile must be programed into the new CAB. For axle type refer to Group 3 Differential and Driveline. For tire revolutions per mile refer to Group 22 Tire and Wheels. To program the CAB refer to the Chassis Diagnostic Manual.

REMOVAL

(1) Push the CAB harness connector lock to release the lock and remove the connector (Fig. 7) from the controller.

(2) Remove the RWAL valve harness connector from the controller.

(3) Remove the controller mounting screws and remove the controller from the mounting bracket (Fig. 7).

INSTALLATION

(1) Position the controller on the bracket.

(2) Install the mounting screws and tighten to 6 N*m (53 in. lbs).

(3) Install the RWAL valve harness connector into the controller.

(4) Install the CAB harness connector into the controller and push down on the connector lock.

Fig. 7 RWAL Controller

1 - CAB CONNECTOR LOCK

2 - RWAL CONNECTOR

3 - MOUNTING SCREWS

Rwal valve

REMOVAL

(1) Remove RWAL valve harness connector from the RWAL controller.

(2) Remove the brake lines from the valve.

(3) Remove the valve mounting bolt (Fig. 8) and remove the valve from the bracket.

Fig. 8 RWAL Valve

1 - RWAL VALVE

2 - MOUNTING BOLT

3 - BRAKE LINES

INSTALLATION

(1) Position the valve on the bracket and install the mounting bolt. Tighten the mounting bolt to 20-27 N*m (15-20 ft. lbs.).

(2) Install the brake lines and tighten to 19 N*m (170 in. lbs.).

(3) Install the RWAL valve harness connector into the RWAL controller.

(4) Bleed base brake system.

Rear wheel speed sensor

REMOVAL

(1) Raise vehicle on hoist.

(2) Remove brake line mounting nut and remove the brake line from the sensor stud.

(3) Remove mounting stud from the sensor and shield (Fig. 9).

Fig. 9 Rear Speed Sensor Mounting

1 - DIFFERENTIAL HOUSING

2 - WHEEL SPEED SENSOR

(4) Remove sensor and shield from differential housing.

(5) Disconnect sensor wire harness and remove sensor.

INSTALLATION

(1) Connect harness to sensor. Be sure seal is securely in place between sensor and wiring connector.

(2) Install O-ring on sensor (if removed).

(3) Insert sensor in differential housing.

(4) Install sensor shield.

(5) Install the sensor mounting stud and tighten to 24 N*m (200 in. lbs.).

(6) Install the brake line on the sensor stud and install the nut.

(7) Lower vehicle.

Exciter ring

The exciter ring is mounted on the differential case. If the ring is damaged refer to Group 3 Differential and Driveline for service procedures.

Specifications

Torque chart

DESCRIPTION    TORQUE

Controller

Mounting Screws . . . . . . . . . . 6 N*m (53 in. lbs.)

RWAL Valve

Mounting Bolt . . . . . . . 20-27 N*m (15-20 ft. lbs.)

Brake Line Fittings . . . . . . . 19 N*m (170 in. lbs.)

Wheel Speed Sensor

Mounting Bolt . . . . . . . . . . . 24 N*m (200 in. lbs.)