ABS System Components on Rear Axle, Removing and Installing

ABS System Components On Rear Axle, Removing And Installing
1. ABS wheel speed sensor
- Before inserting sensor, clean mounting hole inner surface and coat with lubricant G 000 650
2. Hex socket head bolt, 8 Nm (70 inch lbs.)
3. Stub axle
4. Splash shield
5. Wheel hub with wheel bearing and speed sensor rotor
- Replace each time after disassembly
- Only replace complete
- Removing and installing
6. Self-locking 12-point nut, 175 Nm (129 ft. lbs.)
- Replace each time after removing
7. Cap
- Pressing off and driving in
8. Brake disc
9. Screw
10. Hex bolt, 60 Nm (44 ft. lbs.)
- With dished spring
11. Axle beam

Wheel speed sensor on rear axle, removing and installing

Removing
- Raise vehicle.





- Disconnect wheel speed sensor and speed sensor wiring connector -1
- Remove bolt -2- from stub axle.
- Pull ABS wheel speed sensor out of stub axle.

Installing
- Before inserting wheel speed sensor, clean mounting hole inner surface and coat speed sensor with lubricant G 000 650.
- Insert wheel speed sensor into hole in stub axle and tighten bolt to 8 Nm (70 inch lbs.).
- Connect wheel speed sensor to speed sensor wiring.

Wheel speed sensor on rear axle (drum brakes), removing and installing

Removing
- Raise vehicle.





- Disconnect wheel speed sensor and speed sensor wiring connector -1
- Remove bolt -2- from stub axle.
- Pull ABS wheel speed sensor out of stub axle.

Installing
- Before inserting speed sensor, clean mounting hole inner surface and coat speed sensor with lubricant G 000 650.
- Insert speed sensor into hole in stub axle and tighten bolt to 8 Nm (70 inch lbs.).
- Connect speed sensor to speed sensor wiring.

ABS wheel speed sensor wiring to rear axle, removing and installing

Required special tools





- VAS 1978 Wiring harness repair set

Removing
- Obtain radio code on vehicles with coded radio.
- Disconnect battery
- Disconnect wheel speed sensor wiring connector.
- Remove rear interior side panel trim.





- Strip insulation (arrow) from shrink connection.
- Cut speed sensor wiring in front of spliced connection with stripping pliers from VAS 1978 wiring repair kit and remove faulty wiring.





- Strip insulation at wiring end by 15 mm (5/8 inch) using stripping pliers from repair kit and fold over stripped wire portion.
- Install new speed sensor wiring.
- Connect wheel speed sensor to speed sensor wiring.





- Secure wheel speed sensor wire (arrows).

Note: Do not twist wires in the wheel well.

- Cut 2-pin connector at new speed sensor wire (if installed) using stripping pliers from repair kit.
- Strip 15 mm (5/8 inch) insulation off wire end and fold over stripped wire.
- Connect wheel speed sensor wire using correct connector from wiring repair kit VAS 1978.