Overview - Center Differential

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Center Differential Housing Overview

Courtesy of AUDI OF AMERICA, LLC

Bolt
- 20 Nm +90°
- Replacing
Bolt
- Tightening sequence and tightening specification, refer to Fig 2
- Replacing
Center Differential Housing
- Removing and Installing with transmission installed, refer to CENTER DIFFERENTIAL, REMOVING AND INSTALLING
O-Ring
- Replacing
- Coat with transmission fluid
Center Differential
Ball Bearing
- For the center differential
- Replacing. Refer to CENTER DIFFERENTIAL BALL BEARING, REMOVING AND INSTALLING .
Locking Ring
- For the ball bearing on the transmission output shaft with splines
Locking Ring
- For the transmission output shaft with splines
Ball Bearing
- For the transmission output shaft with splines
- Replacing. Refer to TRANSMISSION OUTPUT SHAFT BALL BEARING, REPLACING .
Balance Weight
- Installed depending on the version
Shaft Seal
- For the transmission output shaft with splines
- Replacing. Refer to TRANSMISSION OUTPUT SHAFT SEAL, REPLACING, VEHICLES WITHOUT VIBRATION DAMPER .
Transmission Output Shaft with Splines
- Without vibration damper
- Allocation.
- Removing and installing. Refer to TRANSMISSION OUTPUT SHAFT, REMOVING AND INSTALLING .
- Replace the shaft seal when replacing the transmission output shaft with splines. Refer to TRANSMISSION OUTPUT SHAFT SEAL, REPLACING, VEHICLES WITHOUT VIBRATION DAMPER .
Dust Ring
- Replace after removing
Transmission Output Shaft with Splines
- With vibration damper
- Allocation
- Removing and installing. Refer to TRANSMISSION OUTPUT SHAFT, REMOVING AND INSTALLING .
- Replace the shaft seal when replacing the transmission output shaft with splines. Refer to TRANSMISSION OUTPUT SHAFT SEAL, REPLACING, VEHICLES WITH VIBRATION DAMPER .

Fig 2: Identifying Center Differential Housing - Tightening Specification And Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE: Replace the bolts for the center differential housing.

-- Tighten the bolts in three steps in the sequence shown:

Step	Bolts	Tightening Specification/Additional Turn
1.	-1- and -6-	3 Nm
2.	-1 to 6-	10 Nm
3.	-1 to 6-	Tighten an additional 90°