Overview - Center Differential

WARNING: This page is about a different car, the 2012 Audi Q5, 2011 Audi Q5, 2010 Audi Q5, and 2009 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Danger of Causing Damage to the Transmission.

Do not start or tow the vehicle when the center differential is removed or when the gear oil has been drained.

Fig 1: Center Differential Housing Overview

Courtesy of AUDI OF AMERICA, LLC

O-Ring
- Replacing
- Coat with transmission fluid
Center Differential
Ball Bearing
- For the center differential
- Refer to CENTER DIFFERENTIAL BALL BEARING, REMOVING AND INSTALLING
Circlip
- For the flange shaft ball bearing
Circlip
- For the flange shaft
Ball Bearing
- For the rear flange shaft
- Refer to REAR FLANGE SHAFT BALL BEARING, REMOVING AND INSTALLING
Sealing Plug
- 35 Nm
- Replacing
- For transfer case filler opening
Center Differential Housing
- Refer to CENTER DIFFERENTIAL, REMOVING AND INSTALLING
Seal for the Rear Flange Shaft
- Refer to REAR FLANGE SHAFT SEAL, REMOVING AND INSTALLING .
Rear Flange Shaft
- Removing and installing, refer to REAR FLANGE SHAFT SEAL, REMOVING AND INSTALLING .
- When replacing the rear flange shaft, also replace the seal
- Transmission fluid, allocate correct fluid.
Bolt
- Tightening specifications and sequence, -- Tighten bolts to 8 Nm in -1 to 6- sequence. -- Tighten the bolt in the following sequence: -1 through 6- plus 90° additional turn.
- Replacing

Fig 2: Center Differential Housing - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the center differential housing bolts in three steps as follows:

-- Pretighten the bolts -1- and -2- to 3 Nm.

-- Tighten bolts to 8 Nm in -1 to 6- sequence.

-- Tighten the bolt in the following sequence: -1 through 6- plus 90° additional turn.