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Home >> Audi >> 2016 >> S8 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [CEUA,CGTA,CTFA,CTGA,CTGF,DDTA] >> 21 Turbocharger, Supercharger >> Turbocharger >> Overview - Turbocharger >> Notes

Overview - Turbocharger: Notes

NOTE:

The turbocharger for cylinder bank 2 (left) is shown.

Fig 1: Turbocharger Exploded View
GWWA21-11355
  1. Air Duct Pipe
    • To the turbocharger
  2. Bolt
    • 9 Nm
  3. O-ring
    • Always replace
  4. Nut
    • Tightening specifications and sequence:
    • Always replace
    • Self-locking
  5. Turbocharger
  6. O-rings
    • Always replace
  7. Bolt
    • 9 Nm
  8. Bolt
    • 9 Nm
  9. Coolant Supply Line
  10. O-ring
    • Always replace
  11. Bolt
    • 9 Nm
  12. Oil Supply Line
  13. O-ring
    • Always replace
  14. Support
    • For the turbocharger
  15. Bolt
    • Tightening specification and sequence. Refer to Figure.
  16. Bolt
    • Tightening specification and sequence. Refer to Figure.
  17. Coolant Return Line
  18. O-ring
    • Always replace
  19. Bolt
    • Tightening specification and sequence. Refer to Figure.
  20. Bolt
    • 9 Nm
  21. Retaining Plate
    • For the coolant and oil lines
  22. Stud Bolt
    • 25 Nm
  23. Actuator Rod
  24. Ball Pin
    • 2.5 Nm
    • For the engine cover
  25. Bolt
    • 9 Nm
  26. Vacuum Actuator
  27. O-ring
    • Always replace
  28. Connection
    • For the oil return hose
  29. Bolt
    • 9 Nm
  30. Oil Return Line
  31. Seal
    • Always replace
  32. Stud Bolt
    • Install all the way into the threaded plate -32-
  33. Threaded Plate
    • For the stud bolt
    • Only on the interior engine side
Fig 2: Identifying Left Turbocharger Bolt Tightening Sequence
GWWA21-10603

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

Step Bolts Tightening Specification
1. -1 to 8- 16 Nm
2. -1 to 8- 25 Nm
Fig 3: Identifying Right Turbocharger Tightening Sequence
GWWA21-10604

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

Step Bolts Tightening Specification
1. -1 to 8- 16 Nm
2. -1 to 8- 25 Nm