Download Anti-Lock Braking System Training Program

Component Removal and Installation
Rear Wheel Speed
Sensor Replacement
Removing
1. Place blocks under the front tires to stop the vehicle from
moving.
2. Raise the rear of the vehicle until the tires are off the ground.
3. Place safety stands under the axle.
4. Release the parking brake.
5. Remove the wheel and tire assembly from the axle.
6. Remove the brake drum. It may be necessary to back off the
slack adjuster before removing the drum.
7. Use a twisting motion to remove the sensor from the
mounting block in the axle housing. Do not pull on the
sensor cable.
8. Remove the sensor spring clip from the mounting block.
9. Disconnect the fasteners that hold the sensor cable to other
components.
10. Disconnect the sensor cable from the chassis harness.
Installing
1.
Apply a mineral oil-based lubricant that contains
molydisulfide to the sensor spring clip and body of the
sensor. Use a lubricant that has excellent anti-corrosion and
adhesion characteristics and is capable of continuous
function in a temperature range of -40° to 300°F (-40° to
149°C).
2.
Install the sensor spring clip into the mounting block. The
spring clip must be installed with the flange stops on the
inboard side of the wheel end.
3.
Push the sensor completely into the sensor spring clip until it
contacts the tooth wheel. If the hub is not yet installed, push
the sensor all the way into its holder.
2-36