Wheel Bearing Unit, Servicing

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Special tools and workshop equipment required

Hydraulic Press - Bushing Assembly Tool Kit T10230
Workshop Press VAG 1290 A
Press Plate VW 401
Press Plate VW 402
Press Piece - Multiple Use VW 412
Puller - Kukko Separating Tool - Diameter 25-155mm15/3 with Puller - Kukko Quick Action Separating Tool - 25-155mm17/3

Procedure

Wheel bearing housing is removed, refer to WHEEL BEARING UNIT, REMOVING AND INSTALLING .

Wheel Hub, Removing from Wheel Bearing

Fig 1: Identifying Tool Set Up/Assembly

Courtesy of AUDI OF AMERICA, LLC

-- Install special tools as shown in illustration.

Press Piece - Multiple Use VW 412
Sleeve T10230/3 from the Hydraulic Press - Bushing Assembly Tool Kit T10230
Thrust piece T10230/8 from the Hydraulic Press - Bushing Assembly Tool Kit T10230
Wheel bearing unit
Press Plate VW 402
Press Plate VW 401

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

Fig 2: Identifying Bearing Inner Race And Spinning Washer

Courtesy of AUDI OF AMERICA, LLC

-- Insert the separating tool between the bearing inner race -1- and the wheel hub -2- and pretension with the spindle.

NOTE:

Use a commercially available separating tool such as the Kukko 15/3 with 17/3.

-- Install special tools as shown in illustration.

Fig 3: Identifying Tool Set Up/Assembly

Courtesy of AUDI OF AMERICA, LLC

Press Piece - Multiple Use VW 412
Sleeve T10230/3 from the Hydraulic Press - Bushing Assembly Tool Kit T10230
Thrust piece T10230/8 from the Hydraulic Press - Bushing Assembly Tool Kit T10230
Wheel hub
Bearing inner race
Kukko 15/3 with 17/3

-- Press the bearing inner race from the hub.

Pressing Wheel Hub into Wheel Bearing

CAUTION:

Avoid contaminating with dirt and damaging the seal when lifting, setting down/storing.

The wheel bearing -1- must always face up.

Fig 4: Avoid Contaminating With Dirt And Damaging Seal When Setting Down/Storing
Courtesy of AUDI OF AMERICA, LLC
Always set the wheel bearing unit down on the wheel hub -2-.

Never reach into the inside when lifting the wheel bearing.

Fig 5: Identifying Correct & Incorrect Holding Of Wheel Bearing
Courtesy of AUDI OF AMERICA, LLC
Hold the wheel bearing only on the outside.

-- Install special tools as shown in illustration.

Fig 6: Identifying Punch VW 412, Thrust Plate VW 402, Wheel Hub, Ball Bearing & Thrust Plate VW 401

Courtesy of AUDI OF AMERICA, LLC

Press Piece - Multiple Use VW 412
Press Plate VW 402
Wheel hub
Ball bearing
Press Plate VW 401

NOTE:

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

CAUTION:

When setting down or pressing in, make sure there is no dirt or contaminants between the Press Plate VW 401 -5- and the ball bearing -4-.

-- Press the wheel hub into the wheel bearing.

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