Stub axle carrier/wheel bearing housing (steel), removing and installing

WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools - Stub Axle Carrier/Wheel Bearing Housing (Steel), Removing And Installing

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary items required

Grease cap puller VW 637/2
Fitting sleeve 3241/4
Torque wrench V.A.G 1332
Torque wrench V.A.G 1410

Bit XZN 18 T40027

Removing

Remove wheel covers, remove cover cap on light-alloy wheels (removal hook in vehicle tool kit).

Vehicles with front wheel drive

NOTE:

If wheel bearing unit is not replaced, do not remove collar bolt and dust cap.

Remove wheel.

Fig 2: Tapping Lightly On The Claws Of The Grease Cap Puller VW 637/2

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Loosen dust cap from seat by lightly tapping on claws.

Fig 3: Pulling Off Dust Cap

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Press of dust cap.
Mount wheel and place vehicle on wheels.

Continued for all vehicles

Fig 4: Wheel Hex Bolt

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Only loosen collar bolt - arrow - 90°, otherwise wheel bearing is damaged.

CAUTION: When loosening and tightening collar bolt, vehicle must stand on wheels.

-risk of accident-

Remove tire.
Secure brake disc with a wheel bolt.

Fig 5: Removing Brake Caliper

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Remove brake caliper - arrows -. To do so, use socket insert T40027.

NOTE:

Secure brake caliper to body with wire.
Do not allow brake caliper to hang from brake line.

Remove disc brake.
Remove coil spring → Rear coil spring .

Fig 6: Identifying Collar Bolt, Cover Plate & Wheel Bearing Unit

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Remove collar bolt - 1 -.
Remove cover plate - 3 -.

Vehicles with front wheel drive

Fig 7: Identifying Collar Bolt, Cover Plate & Wheel Bearing Unit

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Remove wheel bearing unit - 2 -.

NOTE:

If wheel bearing unit can be removed from stub axle carrier by hand, wheel bearing unit is OK and can be reinstalled.

Continued for all vehicles

Fig 8: Identifying Speed Sensor, Eccentric Screw Position & Connections

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Remove speed sensor - 2 -.
Mark eccentric screw position - 1 - at top of stub axle carrier/wheel bearing housing, e.g. with a felt-tip pen.
Separate connections listed in sequence: Item 5, item 3, item 4, item 1.
Remove stub axle carrier or wheel bearing housing.

NOTE:

Carefully press drive axle off on all wheel drive vehicles.

Installing

NOTE:

Replace bolts and self-locking nuts → Notes in exploded view diagrams at → Part I, Subframe - front wheel drive .

Bonded rubber bushings have a limited torsional range. Only tighten threaded connections at control arms if vehicle is in curb weight position → Wheel bearing, lifting to curb weight position

Vehicles with front wheel drive

Install new wheel bearing unit if necessary → Note If wheel bearing unit can be removed from stub axle carrier by hand, wheel bearing unit is OK and can be reinstalled. under Stub axle carrier/wheel bearing housing (steel), removing and installing .

Continued for all vehicles

Fig 9: Identifying Speed Sensor, Eccentric Screw Position & Connections

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Tighten connections - 1 - , - 3 - , - 4 - and - 5 -.
Secure speed sensor - 2 - , (front wheel drive) or , (all wheel drive).
Install cover plate and brake caliper at stub axle carrier or wheel bearing housing. Refer to → 46 - BRAKES - MECHANICAL COMPONENTS ; Rear brakes C38; Brake caliper, servicing

Vehicles with all-wheel drive

Tighten 5 wheel bolts and tighten parking brake.

Continued for all vehicles

Fig 10: Identifying Collar Bolt, Cover Plate & Wheel Bearing Unit

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First tighten collar screw - 1 - only to pre-tightening torque without additional turning (turn additionally when vehicle is resting on wheels), (front wheel drive) or (all wheel drive).
Install coil spring → Rear coil spring .
Mount wheel and tighten. This information is contained in AESIS; Library; Additional Information; Wheels and Tire Guide

Torque specifications:

Tighten collar bolt - 1 - Fig 10 , with prescribed additional turn , (front wheel drive) or (all wheel drive).

Vehicles with front wheel drive

Remove tire.

Fig 11: Driving In Dust Cap

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Drive on a new dust cap.
Mount wheel and tighten. This information is contained in AESIS; Library; Additional Information; Wheels and Tire Guide

NOTE:

Damaged (dented) protective caps must be replaced.
Damaged (dented) protective caps allow moisture to enter. Always use tool illustrated to reduce chance of damage to dust cap.

Continued for all vehicles

Perform vehicle alignment → Wheel alignment .

Alignment must take place on a VW/Audi recommended alignment stand.