Audi Workshop Service and Repair Manuals

Special tools and workshop equipment required

• ◆ VW 401 Pressure plate
• ◆ VW 402 Pressure plate
• ◆ VW 407 Press tool
• ◆ VW 412 Press tool
• ◆ VW 416 B Tubular section
• ◆ VW 511 Thrust piece
• ◆ VW 519 Tubular section
• ◆ V.A.G 1331 Torque wrench
• ◆ V.A.G 1332 Torque wrench
• ◆ 30-100 Fitting sleeve
• ◆ Kukko 15-17 Parting tool

• Wheel bearing housing
• ◆ Holes must be free from grease
• Cap screws
• ◆ 80 Nm + further 90° turn
• Bushings
• Ball bearing
• ◆ Pressing outø75 =>Fig.1
• ◆ Pressing out ø82 =>Fig.2
• ◆ Pressing in ø75 =>Fig.4
• ◆ Pressing in ø82 =>Fig.5
• ◆ Pressing off bearing inner race
  =>Fig.3
• ◆ Removing and installing
  
• ◆ Installation position:
• ‒ Large ID of wheel bearing faces wheel hub

• Wheel hub
• ◆ Pressing out =>Fig.1 and Fig.2
• ◆ Removing bearing inner race
  =>Fig. 3
• ◆ Stepped design
• ◆ Contact surface for wheel hub/brake disc and tapped holes must be free from paint and dirt

Removing

• ‒ → Detach wheel trim. In the case of light alloy wheels, use puller from vehicle tool kit or suction grip -3208- to remove trim cap.
• ‒ Slacken off hexagon bolt for outer joint of drive shaft by max. 90° (vehicle must be standing on its wheels to avoid danger of accidents).
• ‒ Raise vehicle and screw out hexagon bolt for outer joint of drive shaft.
• ‒ Remove wheel.
• ‒ Secure brake disc with wheel bolt.
• ‒ Pull wire of ABS speed sensor out of holder at wheel bearing housing/brake caliper.

Vehicles with brake caliper HP-2

• ‒ → Screw out hexagon bolt -2- and detach brake pipe holder.
• ‒ Unscrew bolts -1- for brake caliper and detach brake caliper.
• ‒ Re-attach brake pipe holder. Screw in and tighten hexagon bolt -2-.
• ‒ Attach brake caliper to body such that its weight cannot bend or damage brake pipe.

All vehicles (continued)

• ‒ → Unscrew bolts -1- for brake caliper.
• ‒ Detach brake caliper and attach to body such that its weight cannot strain or damage brake hose/brake pipe.

• ‒ → Unscrew bolt -5- for ABS speed sensor.
• ‒ Detach brake disc.

• ‒ → Screw out bolts -arrows-.
• ‒ Detach splash plate.

• ‒ → Unscrew nut -1-, take out hexagon bolt and lift out both links -2-.

If hexagon bolt cannot be removed from wheel bearing housing, bolt and links -2- must be pressed out of wheel bearing housing => Page 40-133.

Slots in wheel bearing housing are never to be widened using a chisel or the like.

• ‒ Swivel wheel bearing housing aside in direction of arrow and in doing so pull drive shaft journal out of wheel hub.
• ‒ Use wire, for example, to attach drive shaft to body.

• ‒ → Unscrew cap screws -1-.
• ‒ Take out wheel bearing unit.

→ Fig.1    Pressing wheel hub out of wheel bearing (ø 75 mm)

→ Fig.2    Pressing wheel hub out of wheel bearing housing

(ø82 mm)

→ Fig.3    Pressing bearing inner race off wheel hub

• ‒ Insert parting tool -1- in annular groove of bearing inner race -arrow A- and pre-tension with spindle -arrow B-.

•     1 -    Parting tool, e.g. Kukko 15-17 (commercially available)

• ‒ → Press bearing inner race off wheel hub.

•     1 -    Parting tool, e.g. Kukko 15-17 (commercially available)

→ Fig.4    Pressing wheel hub into wheel bearing (ø 75 mm)

→ Fig.5    Pressing wheel hub into wheel bearing (ø 82 mm)

• ‒ When pressing in, thrust pad -VW 511- may only rest on bearing inner race.

Installing

• ‒ Insert wheel bearing unit in wheel bearing housing.
• ‒ → Screw in cap screws -1- and tighten to 80 Nm + further 90° turn.
• ‒ Slip outer joint of drive shaft into wheel hub and hand-tighten new hexagon bolt.
• ‒ Remove any remnants of adhesive on thread of joint pins.
• ‒ Insert both joint pins of upper links in wheel bearing housing.

• ‒ → Press down upper links as far as possible whilst screwing on.
• ‒ Tighten new self-locking nuts -1- to 40 Nm.
• ‒ Fit ABS speed sensor.
• ‒ Fit brake disc and screw on brake caliper.

=> Brake System; Repair Group 46

• ‒ Screw on outer joint of drive shaft.

Note:

Vehicle must not be in contact with ground when tightening outer joint of drive shaft.

A second mechanic is required for the next operation.

• ‒ 1st mechanic: Gets into vehicle and presses foot brake
• ‒ 2nd mechanic: Tightens hexagon bolt for drive shaft

M14 hexagon bolt: 115 Nm

M16 hexagon bolt: 190 Nm

• ‒ Fit and secure wheel => Page 44-1.
• ‒ Tighten hexagon bolt for drive shaft. Vehicle must be standing on its wheels when tightening to avoid danger of accidents.
• Give hexagon bolt further 180° turn.
• ‒ Perform wheel alignment => Page 44-13.