audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Removing and installing wheel bearing housing > < Exploded view of wheel bearing housing components Audi S3
Running gear, Front-wheel drive and four-wheel drive
Wheel bearing housing
Replacing front wheel bearing with wheel bearing housing fitted
 
G40-0052

Special tools and workshop equipment required

  • ◆ 40-105 Thrust plate
  • ◆ Pressing-out tool 3283
  • ◆ Ball joint puller 3287 A
  • ◆ Puller 3423
  • ◆ Engine/gearbox lifter V.A.G 1383 A
  • ◆ Foot-operated pump with high-pressure hose V.A.G 1389 A/1
 
G40-0053
  • ◆ Hydraulic removal and installation device V.A.G 1459 B
  • ◆ Accessory set V.A.G 1459 B2
  • ◆ 2 - Kukko 18/0 puller

Sequence of operations

  • ‒ Unfasten drive shaft bolted joint on wheel end.
    • ‒ Procedure for unfastening twelve-point nut
    • ‒ Procedure for slackening off hexagon collared bolt => Page 40-139
  • ‒ Remove wheel.
 
A40-0251

Four-wheel drive vehicles:

  • ‒ → Unscrew connecting link from suspension strut.

All models:

  • ‒ Pull out spring clip of holder and disengage brake hose.
  • ‒ Disengage speed sensor wire from suspension strut.
 
N46-0263
  • ‒ → Unplug connector -1- of brake pad wear indicator at left brake.

 
N46-0149

Vehicles with brake caliper FS 3:

  • ‒ Detach caps.
  • ‒ → Screw out guide pins -arrows-.
  • ‒ Detach brake caliper and hang up with piece of wire.

Note:

Brake hose/pipe is never to be twisted or kinked.

 
A46-0086

Vehicles with brake caliper FN 3:

  • ‒ → Detach caps -arrows-.

 
A40-0242
  • ‒ → Screw out bolts -arrows-.
  • ‒ Detach brake caliper and hang up with piece of wire.

Note:

Brake hose/pipe is never to be twisted or kinked.

All models:

  • ‒ Screw out cross-head bolt for brake disc and detach brake disc.
  • ‒ Remove brake disc splash plate.
 
N40-0057

Audi A3:

  • ‒ → Screw out bolts -arrows- at ball joint.

 
A40-0230

Audi S3:

  • ‒ → Unscrew nut -arrow-.
 
A40-0241
  • ‒ → Apply ball joint puller 3287 A to ball joint as shown.

Note:

Leave nut screwed several turns onto ball joint to protect thread.

  • ‒ Press ball joint out of wheel bearing housing.

Attention:
On pressing out, ball joint is abruptly released from wheel bearing housing and can be a source of danger.

 
V40-1298

All models:

  • ‒ → Apply pressing-out tool 3283 and press drive shaft out of wheel bearing housing.

Note:

Ensure adequate clearance when pressing out drive shaft.

  • ‒ Use wire to tie drive shaft to body.

Note:

Failure to tie drive shaft in position would damage inner joint.

 
N40-0337

Pressing out wheel hub

Attention:
Place engine/gearbox lifter V.A.G 1383
  • ‒ → Insert thrust bolts -1- in wheel bearing housing.
  • ‒ Fit bell -2-, hollow plunger cylinder -3- with pin and special nut -4-.
  • ‒ Press wheel hub out of wheel bearing by way of pump action whilst holding tool.
  •     1 - Thrust bolt E-15
  •     2 - Bell E-40
  •     3 - Hollow plunger cylinder HKZ-15
  •     4 - Special nut E-8-214 and pin
  •     5 - High-pressure hose with quick-release coupling
 
N40-0336

Pressing out wheel bearing

  • ‒ Remove circlip.
  • ‒ Use V.A.G 1459 B to extract wheel bearing as follows.
  • ‒ → Fit thrust pad -1- with collar facing bearing, thrust sleeve -2- with the four stepped inner diameters facing wheel bearing housing, hollow plunger cylinder -3- with pin and special nut -4-.
  • ‒ Press out wheel bearing by way of pump action.
  •     1 - Thrust pad E-5
  •     2 - Thrust sleeve E-65-1
  •     3 - Hollow plunger cylinder HKZ-15
  •     4 - Special nut E-8-214 and pin
 
A40-0140

Detaching bearing inner race from wheel hub

  • ‒ → Apply special tools shown and extract bearing inner race by turning spindle.
 
N40-0127

Pressing in wheel bearing

  • ‒ → Coat entire hole area in wheel bearing housing with Molypaste AOS 115 000 01.

Note:

A 3 g grease pad is included with the wheel bearing set.

 
N40-0334
  • ‒ → Place wheel bearing -1-, thrust pad -2- (position collar in bearing) and hollow plunger cylinder -3- with pin in position at wheel bearing housing.
  • ‒ Fit thrust pad -4- with broad collar facing wheel bearing housing and special nut -5- from inside.
  • ‒ Press in wheel bearing by way of pump action.
  • ‒ Use pointed-nose pliers to insert circlip.
  • 1 - Wheel bearing
  •     2 - Thrust pad E-13-1
  •     3 - Hollow plunger cylinder HKZ-15
  •     4 - Thrust pad E-10
  •     5 - Special nut E-8-214 and pin
 
N40-0335

Pressing in wheel hub

  • ‒ → Place wheel hub -1- and hollow plunger cylinder -2- with pin in position at wheel bearing.
  • ‒ Fit special nut -4- and thrust pad -3- with collar facing special nut from inside.
  • ‒ Press in wheel hub by way of pump action.
  •     1 - Wheel hub
  •     2 - Hollow plunger cylinder HKZ-15
  •     3 - Thrust pad E-5
  •     4 - Special nut E-8-214 and pin

Perform further installation in reverse order, paying attention to the following:

  • ‒ Insert drive shaft in wheel bearing housing.
  • ‒ Install ball joint => Page 40-28.
  • ‒ Secure drive shaft.
    • ‒ Procedure for tightening twelve-point nut => Page 40-135
    • ‒ Procedure for tightening hexagon collared bolt => Page 40-139
  • ‒ Fit brake caliper.

=> Brake System; Repair Group 46

Tightening torque

Component

Nm

Connecting link to suspension strut (4WD)


90 1)

    1)    Replace nut

Removing and installing wheel bearing housing > < Exploded view of wheel bearing housing components Audi S3