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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Final Drive, Differential Servicing - 7-Speed Dual Clutch Transmission >> 39 Final Drive, Differential >> Center Differential >> Overview - Center Differential

Overview - Center Differential

Fig 1: Exploded View Of Center Differential
GWWA39-10784Courtesy of AUDI OF AMERICA, LLC
  1. Center Differential
  2. Bearings
    • For self-locking center differential
  3. Pressure Spring
  4. Circlip
    • Secures the ball bearing in the self-locking center differential housing
  5. Circlip
    • Secures the transmission output shaft
  6. Ball Bearing
    • For the transmission output shaft.
  7. Housing
    • For the center differential
  8. Bolt
    • M8 X 40
    • Replace after removing
    • 10 Nm +90°
  9. Transmission Output Shaft
  10. Shaft Seal
  11. Dust Ring
  12. Balance Weight
    • Installed depending on the version
  13. Bolt
    • 30 Nm

Center differential housing - tightening specification and sequence 

Fig 2: Center Differential Housing - Tightening Sequence
GWWA39-10856Courtesy of AUDI OF AMERICA, LLC

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

Step Bolts Tightening Specification/Additional Turn
1 -1- and -11- 3 Nm
2 -1 to 11- 10 Nm
3 -1 to 11- 90° additional turn