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Home >> Audi >> 2017 >> A7 Quattro Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (3.0L - Turbocharger & Supercharger - Engine Code: CPNB) >> 21 Turbocharger, Supercharger >> Turbocharger >> Overview - Turbocharger >> Overview - Turbocharger, Vehicles With Turbocharger

Overview - Turbocharger, Vehicles With Turbocharger

WARNING: This page is about a different car, the 2015 Audi A7 Quattro and 2014 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Overview - Turbocharger
GWWA21-10573Courtesy of AUDI OF AMERICA, LLC
  1. Seal
    • Replace
  2. Bracket
    • For the turbocharger
  3. Bolt
    • Tighten last to 23 Nm diagonally and in steps
  4. Stud Bolt
    • 10 Nm
    • Replace nuts after each time they are loosened
  5. Seal
  6. Turbocharger
  7. Bracket
    • For the connector and engine cover
  8. Bolt
    • 9 Nm
  9. Connection
    • For air guide hose
    • From the Mass Airflow Sensor -G70- to the turbocharger
    • Must be free of oil and grease before installing
  10. O-Ring
    • Replace
  11. Hose
    • For the crankcase ventilation
  12. Bolt
    • 9 Nm
  13. Nut
    • Replace
    • Coat the thread with hot bolt paste .
    • Tightening specification and sequence, refer to Fig 2.
  14. Exhaust Gas Temperature Sensor 1 -G235-
  15. Seal
    • Replace
  16. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 3.
  17. Pipe
    • To the Exhaust Gas Recirculation (EGR) pipe cooler
  18. Seal
    • Replace
  19. Nut
    • Replace
    • Coat the thread with hot bolt paste .
    • Tightening specification and sequence, refer to Fig 3.
  20. Exhaust Pipe
  21. Seal
    • Replace
  22. Bolt
  23. Exhaust Manifold
  24. Bolt
    • Tightening specification and sequence, refer to Fig 2.
  25. Bolt
    • Tightening specification and sequence, refer to Fig 2.
  26. Bracket
    • For the turbocharger
Fig 2: Identifying Turbocharger, Bolts And Nuts
GWWA21-10552Courtesy of AUDI OF AMERICA, LLC
NOTE:

Replace the stud bolts and the nuts.

-- Tighten the bolts and nuts in seven steps in the sequence shown: 

Step Bolts/nuts Tightening Specification/Residual Torque
1. Stud bolts for the nuts -1 and 2-. 10 Nm
2. -1 and 2- Install all the way in by hand.
3. -1 and 2- 9 Nm
4. -1 and 2- Tighten an additional 90°
5. -3, 4, and 5- Install all the way in by hand.
6. -3 and 4- 9 Nm
7. -5- 23 Nm
Fig 3: Identifying EGR Pipe At Turbocharger
GWWA26-11019Courtesy of AUDI OF AMERICA, LLC