Overview - Center Differential Housing, Bolted Driveshaft

WARNING: This page is about a different car, the 2015 Audi S7, 2015 Audi RS 7, 2014 Audi S7, 2014 Audi RS 7, and 2013 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Refer to REPAIR INFORMATION .

Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

Fig 1: Center Differential Housing, Bolted Driveshaft, Component Location Overview

Courtesy of AUDI OF AMERICA, LLC

Bolt
- Aluminum bolts
- Quantity 11
- Replacing
- Tightening specification and sequence, refer to Fig 2
Housing
- For the center differential
- Refer to CENTER DIFFERENTIAL HOUSING, REMOVING AND INSTALLING, BOLTED DRIVESHAFT
Ball Bearing
- For the flange shaft
- Refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING
Spacer Sleeve
- Removing and installing, refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING .
Gear Carrier
- Installed position: The tab must fit into the opening in the transmission intermediate housing
Spacer Sleeve
Shim
Ball Bearing
- for the center differential
Center Differential
Ball Bearing
- For the center differential
Pressure Spring
Shim
Plate Spring
- Installed position: The side curved outward faces the shaft seal -17-
Locking Ring
- For the flange shaft
- Removing and installing, refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING .
Bolt
- Steel bolts
- Quantity: 2
- Replacing
- Tightening specification and sequence, refer to Fig 2
Balance Weight
- Installed depending on the version
Shaft Seal
- Refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING
Rear Flange Shaft
- without vibration damper
- Removing and installing, refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING .
Rear Flange Shaft
- With vibration damper
- Removing and installing, refer to REAR FLANGE SHAFT, SEAL AND BALL BEARING, REMOVING AND INSTALLING .
Bolt
- 20 Nm +90°
- Replacing

Fig 2: Center Differential Housing Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in eight steps as follows:

Step	Bolts	Tightening specification/additional turn
1.	Aluminum bolts -1-	8 Nm
2.	Aluminum bolts -2-	Install the bolt hand-tight.
3.	Aluminum bolts -1-	Loosen again and then install all the way hand-tight
4.	Aluminum bolts -3-	Install the bolt hand-tight.
5.	Steel bolts -4-	Install the bolt hand-tight.
6.	-1, 2, 3, 4-	10 Nm diagonally
7.	Steel bolts -4-	15 Nm
8.	-1, 2, 3, 4-	90° additional turn, diagonally