Overview - Center Differential Housing, Bolted Driveshaft

Fig 1: Center Differential Housing

Courtesy of AUDI OF AMERICA, LLC

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

Fig 2: Center Differential Housing Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in eight steps as follows: