ABS System Components on Rear Axle, Removing and Installing

ABS system components on rear axle, removing and installing





1 - Left Rear ABS Wheel Speed Sensor G46 / Right Rear ABS Wheel Speed Sensor G44
^ Before inserting sensor, clean mounting hole inner surface and coat with lubricating paste G 000 650

2 - Hex socket head bolt
^ 8 Nm

3 - Stub axle
4 - Splash plate
5 - Hex bolt, 60 Nm
^ With dished spring washer

6 - Phillips-head screw
7 - Brake disc
8 - Cap

9 - Self-locking 12-point nut, 175 Nm
^ Replace each time after removing

10 - Wheel hub with wheel bearing and rotor
^ Replace each time after removing
^ Only replace completely

11 - Axle beam

Speed sensor on rear axle, removing and installing

Removing
- Raise vehicle.





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

Installing
- Before inserting speed sensor, clean hole inner surface and coat speed sensor with lubricating paste G 000 650.
- Insert speed sensor into hole in stub axle and tighten bolt to 8 Nm.
- Connect speed sensor to speed sensor wiring.

Checking rotor on rear axle
- Raise vehicle.
- Remove wheel.
- Remove ABS speed sensor bolt from stub axle.
- Remove ABS speed sensor out from stub axle.
- Check rotor for damage and dirt.
- If rotor is damaged, remove wheel hub with rotor and replace.

Rear speed sensor wiring, removing and installing

Special tools, testers and auxiliary items required





^ Wiring harness repair kit VAS 1978

Removing:
- Obtain radio code on vehicles with coded radio.
- Disconnect battery.
- Separate connector from speed sensor and speed sensor wiring.
- Remove rear side trim panel.





- Disconnect speed sensor wiring - arrow - with wire strippers from VAS1978 and remove faulty wiring.





- Strip 15 mm (5/8 in.) of insulation from end of wire using wire strippers and fold half of stripped wire back.
- Guide in new speed sensor wiring.
- Connect speed sensor to speed sensor wiring.





- Clip in speed sensor wiring - arrows -.
Make sure the wiring is not twisted when installing the speed sensor wiring in the wheel housing.
- Cut 2-pin connector off new speed sensor wiring with wire stripper pliers.
- Strip 15 mm (5/8 in.) of insulation from end of wire with wire strippers and bend back half.
- Connect speed sensor wiring with help of suitable crimp connector from wiring harness repair kit VAS1978.