Wheel Bearing Unit, Servicing

WARNING: This page is about a different variant/trim than selected.

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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-- 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 Puller Set - Threaded Spindle:VAS 701 003/2 in the adapter sleeve and attach 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- by turning the Puller Set - Clamping Pliers, Diameter 66-70 mm:VAS 701 003/7 with the Puller Set - Special Ring Spanner AF36:VAS 701 003/5 in the direction of -arrow- and 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 Fig 11.

Fig 11: Always Set Wheel Bearing Down On Wheel Hub -2- (Wheel Bearing -1- Facing Up)

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-- 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:

There is a risk of damaging or contaminating the wheel bearing.

When setting down or pressing in, make sure there is no dirt or contaminants between the Press Plate:VW401 and the wheel bearing.

-- Press the wheel hub into the wheel bearing.

-- Install the wheel bearing unit. Refer to WHEEL BEARING UNIT, REMOVING AND INSTALLING .