Wheel Bearing Housing and Trailing Arm Assembly Overview
Wheel Bearing Housing and Trailing Arm Assembly Overview
• The - arrow - points in driving direction.
1 Cover
2 Mounting Bracket
3 Coupling Rod
• Connects stabilizer to trailing link/wheel bearing housing.
4 Bolt
• 90 Nm + 90° turn
• Observe tightening sequence. Refer to => [ Position: Threaded Connection of Trailing Arm/Wheel Bearing Housing ] Trailing Arm with Mounting Bracket.
• Always replace if removed.
5 Trailing Arm
• Different versions. Refer to => [ Trailing Arm Characteristics ] Application and ID.
• Removing and installing, refer to => [ Trailing Arm with Mounting Bracket ] Trailing Arm with Mounting Bracket.
• Servicing, refer to => [ Trailing Arm Bonded Rubber Bushing ] Trailing Arm Bonded Rubber Bushing.
• Note the tie rod allocation when replacing them. Refer to => [ Note the allocation of the tie rods for the trailing arms ] Application and ID.
6 Drive Axle
• Assembly overview, refer to => [ Drive Axle Assembly Overview ] Drive Axle Assembly Overview.
• Removing and installing, refer to => [ Drive Axle ] Drive Axle.
7 Bolt
• M14 x 1.5 x 45
• 70 Nm + 90° turn
• Always replace if removed.
8 Wheel Bearing Housing
• Removing and installing, refer to => [ Wheel Bearing Housing ] Wheel Bearing Housing.
9 Right Rear ABS Wheel Speed Sensor (G44) / Left Rear ABS Wheel Speed Sensor (G46)
• Can be checked in Guided Fault Finding using the vehicle diagnostic tester.
• Before inserting sensor, clean inner surface of mounting hole and coat with Polycarbamide grease (G 000 650).
10 Bolt
• M6 x 16
• 8 Nm
11 Bonded Rubber Bushing
• Replacing, refer to => [ Wheel Bearing Housing Bonded Rubber Bushing ] Wheel Bearing Housing Bonded Rubber Bushing.
12 Nut
• M12 x 25
• 40 Nm
• Self-locking.
• Always replace if removed.
13 Brake Disc
14 Bolt
• 4 Nm
15 Bolt
• Various versions.
• There are 2 types of twelve-point bolts, with and without ribs. Distinguishing characteristic, refer to => [ Differences Between a Twelve-Point Bolt with Ribs and a Twelve-Point Bolt without Ribs ].
• When installing a twelve-point bolt, always check what type of twelve-point bolt is to be used.
• Use the correct tightening specification for the specific bolt.
• The tightening specification for a twelve-point bolt with ribs is 70 Nm + 90° turn. For loosening and tightening specifications, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening.
• The tightening specification for a twelve-point bolt without ribs is 200 Nm + 180° turn. For loosening and tightening specifications, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening.
• Always replace if removed.
16 Wheel Hub with Wheel Bearing
• The ABS sensor ring is installed in the wheel bearing.
• Removing and Installing, refer to => [ Wheel Bearing and Wheel Hub ] Wheel Bearing and Wheel Hub.
• The wheel bearing and wheel hub are installed together in a housing.
• This wheel bearing/hub unit is maintenance and adjustment free. Adjusting or servicing is not possible!
17 Bolt
• M6 x 12
• 12 Nm
18 Cover Plate
19 Bolt
• M12 x 1.5 x 80
• 90 Nm + 90° turn
• Always replace if removed.
20 Bonded Rubber Bushing
• Replacing, refer to => [ Trailing Arm Bonded Rubber Bushing ] Trailing Arm Bonded Rubber Bushing.
21 Bolt
• M10 x 35
• 50 Nm + 90° turn
• Always replace if removed.
Differences Between a Twelve-Point Bolt with Ribs and a Twelve-Point Bolt without Ribs
The contact surfaces - arrow A - and - arrow B - are different on the two-point bolts.
I Twelve-point bolt with ribs - arrow A -
II Twelve-point bolt without ribs - arrow B -