Rear Suspension

Removing and installing rear-wheel bearing











Tools

Caution! Caution when working with hydraulic presses -Danger of crushing.
^ Danger of injury and material damage if the wheel carrier is raised incorrectly.
^ Watch out for parts falling when working with the hydraulic cylinder.
^ Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
^ When raising, use a suitable intermediate layer (hard rubber).
^ Do not damage the brake cover plate.
^ Vehicle may not be moved if drive shafts have not been fitted and tightened.

Removal
^ The wheel bearing is removed with the wheel bearing housing installed.

1. Remove the corresponding hub cap with puller hook 9229/1 and release the axle nut (fastening nut) before lifting the vehicle. Operate the brake whilst doing so (2 workers required).
2. Raise vehicle.
3. Remove the axle nut (fastening nut) and remove the drive shaft.
4. Release brake calliper and hang on a suitable position in the wheel well.





5. Remove -brake disc-.
6. Disengage the cable of the foot-operated parking brake and remove the brake shoes.





7. Remove wheel hub (tools).





8. Secure the grip piece (2 half shells) T10205/1 with several wheel bolts behind the wheel hub.





9. Insert the bell T10205/2 into the provided groove in the correct position.





10. Insert the tubular piston cylinder VAS 6178. Position the pressure piece T10205/3 and the nut for the threaded rod 8-2. Press out the wheel hub.





^ It should be ensured that the separator is not pressing on the seat of the bearing inner race on the wheel hub.
11. If the wheel hub is used again, remove the -inner race of the wheel bearing- from the wheel hub. To do this, position the 12 - 115 mm [diameter] separator 111 behind the inner race.





12. Press inner race off the wheel hub. To do this, position the bell T10205/2 without the grip piece. Insert the tubular piston cylinder VAS 6178. Position the pressure piece T10205/3 and the nut for the threaded rod 8-2.





13. Remove the -wheel speed sensor-.





14. Remove the -snap ring-.





15. Remove the wheel bearing (tools).





16. Press out the wheel bearing. To do this, position the pipe and the mount T10205/5 and T10205/4 in the correct position on the wheel bearing housing. Insert the tubular piston cylinder VAS 6178. Position the pressure piece T10205/6 and the nut for the threaded rod 8-2.

Installation

Note!
^ The wheel bearing must not come into contact with magnetic objects (e.g., magnetic screwdriver, magnet).





^ The entire threaded parts of the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on the wheels, or the wheel suspension is being raised with a universal vehicle lift. -Dimension X-, from lower edge of wing to middle of axle 506 mm +10 mm corresponds to vehicle position.





^ Use an intermediate layer (hard rubber)! Do not damage the brake cover plate.
^ Screws and nuts are Dacromet-coated and must not be greased.
^ Grease axle nut with a little Optimoly TA aluminum paste only at mounting-face ring.
^ Grease the toothing of the drive shaft with aluminum paste Optimoly TA.
^ Drive shafts must not be left hanging from the joint stop! Tie up.
^ Use new screws and fastening nuts.
^ The wheel bearing seat must be free of grease.
^ Use correct tightening torques.





1. Fit the wheel bearing (tools).





^ Check that the bearing seat is clean and the surface is in good order. There must not be scores, grooves or deformations.





^ Insert the wheel bearing with the magnetic multiple-pole ring to the steering shaft. Check the magnetic side (e.g., with a paper clip). Do not use magnets or screw drivers to check!
2. Position the -wheel bearing in the wheel bearing housing- in the correct position. Position the pressure piece T10205/7 in the correct position on the wheel bearing. Insert the tubular piston cylinder VAS 6178. Position the pressure piece T10205/9 and the nut for the threaded rod in correct position 8-2. Mount wheel bearing. Shortly before the stop, the applied force will be between 35 KN and 60 KN. The maximum assembling force must not exceed 90 KN at the stop.





3. Position the -snap ring- with the opening facing downward. When the Seger ring is fitted correctly, -dimension X- is at least 15 mm. If this dimension is not reached, the Seger ring must be fitted again. If necessary, carefully press the wheel bearing again.





4. Fit the wheel hub (tools).
^ Carry out a close visual inspection of the seat of the wheel hub. There must not be scores, grooves or similar deformations on the hub.





5. Position the -wheel hub- in the correct position. Position the pressure piece T10205/10 in the correct position on the wheel hub. Insert the tubular piston cylinder VAS 6178. Position the pressure piece T10205/6 and the nut for the threaded rod in correct position 8-2. Pull in the wheel hub. Shortly before the stop, the applied force will be between 9 KN and 35 KN. The maximum assembling force must not exceed 40 KN at the stop.





6. Fit the -wheel speed sensor-.
7. Fit the drive shaft, brake shoes, brake disc, and brake calliper in reverse order. Engage the cable of the foot-operated parking brake and adjust the brake shoes.
8. Mount wheels.