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Home >> Audi >> 2020 >> Q5 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Turbocharger, Supercharger [DMTA,DPAA,DPUA,DPVA,DMTC]) >> 21 Turbocharger, Supercharger >> Turbocharger >> Overview - Turbocharger >> Overview - Turbocharger, Part 1

Overview - Turbocharger, Part 1

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Fig 1: Turbocharger Components Overview
GWWA21-11552Courtesy of AUDI OF AMERICA, LLC
  1. O-Ring
    • Replace after removing
  2. Turbocharger Recirculation Valve -N249-
  3. Bolt
    • 9 Nm
  4. O-Ring
    • Replace after removing
    • Coat with coolant
  5. Bolt
    • 9 Nm
  6. Coolant Return Line
  7. Locking Spring
    • Replace after removing
  8. Ball Socket
  9. Charge Air Pressure Control Module -GX34-
  10. Nut
    • 8 Nm
  11. Control Rod
  12. Nut
    • 8 Nm
  13. Locking Spring
    • Replace after removing
  14. Ball Socket
  15. Bolt
    • 9 Nm
  16. Locking Plate
    • Replace after removing
    • Installing. Refer to Fig 3.
    • Quantity: 2
  17. Nut
    • Tightening specification and sequence. Refer to Fig 2.
    • Replace after removing
    • Coat the threaded pins with hot bolt paste. Refer to the Parts Information.
  18. Seal
    • Replace after removing
  19. Threaded Pin
    • Tightening Specification
      • If reusing the cylinder head: 25 Nm
      • If replacing the cylinder head: 27 Nm
  20. Turbocharger
  21. O-Ring
    • Replace after removing
    • Coat with engine oil
  22. Oil Return Line
  23. O-Ring
    • Replace after removing
    • Coat with engine oil
  24. Bolt
    • 25 Nm
  25. Bolt
    • 9 Nm

Turbocharger - Tightening Specification and Sequence

Fig 2: Turbocharger - Tightening Specification and Sequence
GWWA21-11563Courtesy of AUDI OF AMERICA, LLC

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

Step Nuts Tightening Specifications
1. -1 to 4- Install all the way by hand
2. -1 and 2- 10 Nm
3. -3 and 4- 25 Nm
4. -1 and 2- 25 Nm

Install the Locking Plates

Fig 3: Install the Locking Plates
GWWA21-11469Courtesy of AUDI OF AMERICA, LLC

The locking plates are pressed onto the nuts using the following tools:

-- Press on the locking plates for easy accessible nuts using the 1 /2 "- EGR Temp. Sensor Socket - 14mm with extension and the hammer.

-- Press on the locking plates for difficult accessible nuts using the Wrench - 14 mm and the pry bar, at the same time support the pry bar on the turbocharger.