Installing rear wheel bearing

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 raised using a universal vehicle lift. Dimension -X- , from lower edge of wing to middle of axle 506 mm ± 10 mm corresponds to vehicle position. See Fig 1.
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 slightly with aluminum paste Optimoly TA.
Drive shafts must not be left hanging from the joint stop! Tie up.
Use new screws and lock nuts.
The wheel bearing seat must be free of grease.
Observe correct tightening torques. → 42 TW Tightening torques for rear axle - as of MY 2003 (All Models) .

Fig 1: Axle must be tightened in vehicle position (Dimension -X-)

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Fig 2: Use rubber base between universal jack and wheel carrier

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Fig 3: Wheel bearing (tools)

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1. Fit the wheel bearing (tools).

Fig 4: Check bearing seat for scoring, grooves or deformations

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Check that the bearing seat -arrow- is clean and the surface is in good order. There must be no scores, grooves or deformations. See Fig 4.

Fig 5: Installing wheel bearing (1 Of 2)

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Insert the wheel bearing with the magnetic multiple-pole ring to the drive 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 T10205/7 pressure piece (from attachments T10205 ) in the correct position on the wheel bearing. Insert the tubular piston cylinder VAS 6178 . Position the T10205/9 pressure piece (from attachments T10205 ) and the T10205/8-2 threaded nut (from attachments T10205 ) in the correct position. Mount the wheel bearing. Shortly before the stop, the applied force will be between 26 ftlb. and 44ftlb. The maximum assembling force must not exceed 67 ftlb. at the stop. See Fig 5.

Fig 6: Installing wheel bearing (2 Of 2)

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3. Position the circlip with the opening facing downward. When the Seger ring is fitted correctly, the 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. See Fig 6.

Fig 7: Wheel hub (tools)

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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.

Fig 8: Installing wheel hub

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5. Position the wheel hub in the correct position. Position the T10205/10 pressure piece (from attachments T10205 ) in the correct position on the wheel hub. Insert the tubular piston cylinder VAS 6178 . Position the T10205/6 pressure disc (from attachments T10205 ) and the T10205/8-2 threaded nut (from attachments T10205 ) in the correct position. Pull in the wheel hub. Shortly before the stop, the applied force will be between 6.5 ftlb. and 26 ftlb. The maximum assembling force must not exceed 30 ftlb. at the stop. See Fig 8.

Fig 9: View of wheel speed sensor

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6. Fit wheel speed sensor. Refer to 45 11 19 Removing and installing speed sensor - as of MY 2003 (All Models Except Cayenne S TIO Titan) . See Fig 9.