Wheel Bearing Unit, Servicing

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Special tools and workshop equipment required

Press Plate :VW401

Fig 1: Press Plate
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Press Plate :VW402

Fig 2: Press Plate VW402
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Press Piece - Multiple Use :VW412

Fig 3: Identifying Press Piece - Multiple Use VW412
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Hydraulic Press - Bushing Assembly Tool Kit :T10230

Fig 4: Identifying Hydraulic Press - Bushing Assembly Tool Kit T10230
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Pneumatic Hydraulic Press :VAS 6654 , not illustrated
Bearing Puller Set :VAS 701 003 , not illustrated

Procedure

Wheel bearing unit is removed. Refer to WHEEL BEARING UNIT, REMOVING AND INSTALLING .

Wheel Hub, Removing from Wheel Bearing

Fig 5: Identifying Tool Set Up

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Handling the wheel bearing. Refer to Figure.

-- Arrange the special tools as shown.

Press Piece - Multiple Use :VW412
Hydraulic Press - Bushing Assembly Tool Kit - Sleeve :T10230/3
Hydraulic Press - Bushing Assembly Tool Kit - Thrust Piece :T10230/8
Wheel Bearing Unit
Press Plate :VW402
Press Plate :VW401

-- Press the wheel hub out of the wheel bearing.

Bearing Inner Race, Removing from Wheel Hub

Fig 6: Bearing Inner Race Remover Tools

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-- Prepare the puller from the Puller Set :VAS 701 003 as follows.

-- Install the Puller Set - Clamping Sleeve :VAS 701 003/1 on the Puller Set - Clamping Pliers, Diameter 66-70 mm :VAS 701 003/7 .

-- Install the Threaded Spindle :VAS 701 003/2 in the adapter sleeve. Install the Puller Set - Thrust Piece :VAS 701 003/3 .

Bearing inner race version 1:

Fig 7: Place Puller On Ball-Cage

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-- Remove the ball-cage assembly from the bearing inner race -2-.

-- Place the puller -1- as shown on the ball bearing race -arrow- of the bearing inner race.

Bearing inner race version 2:

Fig 8: Place Puller On Ball-Cage

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-- Place the puller -1- on the groove -arrow- of the bearing inner race -2-.

Continuation for All Versions:

Fig 9: Clamp The Puller On The Bearing Inner Race -2-

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-- Clamp the puller on the bearing inner race -2-. To do this, turn the Puller Set - Clamping Pliers, Diameter 66-70 mm : VAS 701 003/7 in the -direction of the arrow- using the Puller Set - Special Ring Spanner AF36 : VAS 701 003/5 .

-- Counterhold the Puller Set - Clamping Sleeve : VAS 701 003/1 with the Puller Set - Clamping Handle : VAS 701 003/4 .

-- Remove the bearing inner race with the Puller Set - Threaded Spindle :VAS 701 003/2 from the wheel hub -1-.

Wheel Hub, Pressing in Wheel Bearing

Fig 10: Identifying Punch VW 412, Thrust Plate VW 402, Wheel Hub, Ball Bearing & Thrust Plate VW 401

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Handling the wheel bearing. Refer to Figure.

-- Arrange the special tools as shown.

Press Piece - Multiple Use :VW412
Press Plate :VW402
Wheel Hub
Wheel Bearing
Press Plate :VW401

The reworked surface of the wheel bearing outer race faces down.

CAUTION:

Contamination increases the risk of destroying the wheel bearing.

- Protect the contact surfaces on the wheel bearing from dirt.

-- Press the wheel hub into the wheel bearing.