Bendix Commercial Vehicle Systems GEN 5 ABS - Manual (Page 29)

29
Fault Codes
FIGURE 28 - Rear Speed Sensor Components
Rear Axle Speed Sensor
The rear axle speed sensor located inside the brake drum
and is only accessible by removing the wheel and drum
assembly.
NOTE: For diagnostic and service information on in-axle
speed sensors, please contact Dana Corporation.
CAUTION: Block wheels before beginning this procedure.
Follow all standard safety procedures, outlined by, but not
limited to, the General Precautions listed on page 13 of
this document.
CAUTION: Do not work under a vehicle supported by a
jack.
Removal
1. Back off the slack adjuster to release the brake shoes.
2. Remove the wheel and tire assembly from the axle.
3. Remove the brake drum.
4. Remove the speed sensor with bushing from the
mounting block on the axle housing. Use twisting motion
and avoid pulling on the cable.
5. Disconnect any fasteners that hold sensor cable to other
components and disconnect the speed sensor from the
harness.
Installation
1. Install the sensor bushing with the flange stops toward
the inboard side of the vehicle.
2. Apply a non-conductive grease lubricant to the body of
the speed sensor.
3. Push the speed sensor completely into sensor bushing
by hand until it stops against the tone ring. The speed
sensor is properly installed and adjusted when it is
touching the tone ring.
NOTE: The speed sensor must slide freely in and out of
the mounting sleeve bore. Operating the vehicle with seized
components will damage the speed sensor and the tone
ring.
4. Route the cable to the frame.
5. Connect sensor cable to harness and install fasteners
to hold the sensor cable in position.
6. Install the brake drum on the wheel hub.
7. Adjust the rear axle brakes.
8. Install the wheel and tire assembly and tighten the wheel
nuts.
9. Test the installation.
10. Check the cable connections.
11. Clear the trouble codes. A 17•12 trouble code will remain
in the system until the vehicle has been driven.
12. Test drive the vehicle and verify that the ABS indicator
lamp operates properly.
Friction Sleeve
Sensor Block
Sensor