Center Differential Housing Overview, Attached Driveshaft

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NOTE:

REPAIR INFORMATION

CLEAN WORKING CONDITIONS .

Fig 1: Center Differential Housing Overview, Attached Driveshaft

Courtesy of AUDI OF AMERICA, LLC

Bolt
- 20 Nm + 90°
- Replace
Bolt
- Aluminum bolts
- Quantity: 11
- Replace
- Tightening specification and sequence, refer to Fig 2
Housing
- For the center differential
- Removing and installing, refer to CENTER DIFFERENTIAL HOUSING AND CENTER DIFFERENTIAL, BOLTED DRIVESHAFT or CENTER DIFFERENTIAL HOUSING AND CENTER DIFFERENTIAL, ATTACHED DRIVESHAFT
Gear Carrier
- Installed position: The tab must fit into the opening in the transmission intermediate housing
Center Differential
Pressure Spring
Guide Sleeve
- Does not have to be installed again
Locking Ring
- For the transmission output shaft ball bearing with splines
- Removing and installing, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES .
Locking Ring
- For the transmission output shaft with splines
- Removing and installing, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES .
Ball Bearing
- For the transmission output shaft with splines
- Removing and installing, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES
Bolt
- Steel bolts
- Quantity: 2
- Replace
- Tightening specification and sequence, refer to Fig 2
Balance Weight
- Installed depending on the version
Shaft Seal
- Replace on vehicles with vibration damper, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES
- Replace on vehicles without vibration damper, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, VEHICLES WITHOUT VIBRATION DAMPER
Dust Ring
- Replace after removing
Transmission Output Shaft with Splines Without Vibration Damper
- Removing and installing, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES
Transmission Output Shaft with Splines and Vibration Damper
- Removing and installing, refer to TRANSMISSION OUTPUT SHAFT WITH SPLINES, TRANSMISSION OUTPUT SHAFT BALL BEARING WITH SPINES
- VIBRATION DAMPER, INSTALLING ON TRANSMISSION OUTPUT SHAFT WITH SPLINES

Fig 2: Tightening Specification And Sequence, Center Differential Housing - Attached Driveshaft

Courtesy of AUDI OF AMERICA, LLC

-- Tighten bolts in 8 stages as follows:

Step	Bolts	Tightening Specification/Additional Turn
1.	Aluminum bolts -1-	8 Nm
2.	Aluminum bolts -2-	Tighten the bolt hand-tight.
3.	Aluminum bolts -1-	Loosen again and then install all the way hand-tight
4.	Aluminum bolts -3-	Tighten the bolt hand-tight.
5.	Steel bolts -4-	Tighten 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