Audi Workshop Service and Repair Manuals

Notes:

• ◆ General repair instructions
  .
• ◆ Securing rear final drive to repair stand => Page 39-121.
• ◆ Adjustments are required when replacing components marked1) => adjustment overview, Page 39-168.

• Vent sleeve
• ◆ With rubber valve
• ◆ Installation position => Fig.3.
• Final drive housing 1)
• ◆ With drive pinion
• ◆ Removing and installing drive pinion
  .

• Outer race for large taper roller bearing 1)
• ◆ Driving out => Fig.39-145
• ◆ Pressing in => Fig.39-146
• Shim "S1"
• ◆ Note thickness
• ◆ Adjustment overview
  .
• Cover for final drive 1)
• ◆ With O-ring
• ◆ Replace O-ring
• ◆ Insert O-ring with oil
• TORX-bolt - 25 Nm
• Seal, right
• ◆ Replacing .
• Hexagon socket-head bolt
  - 25 Nm

• Flange shaft, right
• ◆ Removing and installing =>Fig.1
• Oil filler plug - 35 Nm
• Differential with crown wheel 1)
• ◆ Dismantling and assembling => Page 39-134
• Oil drain plug, 35 Nm
• Socket
• ◆ holds solenoid in position
• ◆ Drive in up to stop
• Solenoid
• Outer race for small taper roller bearing 1)
• ◆ Driving out
  => Fig.39-142
• ◆ Pressing in
  => Fig.39-142

• Shim "S2"
• ◆ Note thickness
• ◆ Adjustment overview
  .
• Seal, left
• ◆ Replacing => Page 39-111.
• Flange shaft, left
• ◆ Removing and installing =>Fig.1
• Hexagon socket-head bolt
  - 25 Nm
• Cover
• ◆ Installing => Fig.2

→ Fig.1    Removing and installing flange shaft

• ‒ To loosen the securing bolt, screw two bolts into the flange shaft and counter-hold with a lever.
• ‒ Pull out flange shaft using the bolts already screwed in.

→ Fig2    Press in cover until stop

→ Fig.3    Installation position vent sleeve

The vent sleeve must protrude from the housing by 13 mm (dimension -a-) after being pressed in.

The slot in the rubber valve is located longitudinally in the direction of travel.

Removing and installing differential

• ● Rear final drive removed

Special tools, testers and auxiliary equipment required

• ◆ Drip tray V.A.G 1306

Removing

• ‒ Secure complete rear final drive to repair stand => Page 39-121.
• ‒ Place drip tray V.A.G 1306 underneath and drain gearbox oil.

• ‒ → Remove left and right flange shafts.
• ‒ To loosen the securing bolt, screw two bolts into the flange shaft and counter-hold with a lever.
• ‒ Mark flange shafts (left and right).
• ‒ Pull out flange shaft using the bolts already screwed in.
• ‒ Unscrew securing bolts from cover for final drive.
• ‒ Take cover for final drive off axle housing and remove differential.

Installing

Installation is carried out in the reverse order; note the following:

• ‒ Insert differential.
• ‒ Renew O-ring for cover for final drive and oil when installing.
• ‒ Fit cover for final drive onto final drive housing and using diagonal sequence tighten to 25 Nm.
• ‒ Replace sealing ring for flange shaft
  .
• ‒ Fill space between sealing and dust lips with multipurpose grease.

• ‒ → Insert flange shafts and tighten to 25 Nm.
• ‒ Top-up gear oil in rear final drive and check oil level => Page 39-92.