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Home >> Audi >> 2012 >> A3 2.0 TDI >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> 2.0L - Turbocharger, Supercharger - Engine Code(S): CBEA >> 21 Turbocharger, Supercharger >> Description And Operation >> Turbocharger Assembly Overview

Turbocharger Assembly Overview

Fig 1: Identifying Turbocharger And Exhaust Manifold With Attachments Overview
GWWM21-0190Courtesy of AUDI OF AMERICA, LLC
  1. Bolt
    • 8 Nm 
  2. Warm Air Collector Plate
  3. Bolt
    • 10 Nm 
  4. Oil Supply Line
    • 22 Nm 
    • Do not change the angles of the oil supply line
    • Install without tension
    • Before installing, check oil supply line for clear passage
    • Fill with engine oil before installing the turbocharger oil supply line on the connections
  5. Vacuum Hose
    • Make sure it is seated correctly and is routed without kinks
    • To wastegate bypass regulator valve -N75-
    • Connection diagram for vacuum hoses. Refer to VACUUM CONNECTION LAYOUT
  6. Pressure Cell
    • With the charge pressure actuator position sensor -G581-
    • Unit with turbocharger and exhaust manifold (cannot be replaced separately)
  7. Heat Shield
    • Replace if damaged
  8. Heat Shield
  9. Bracket
    • For wiring harness
  10. Seal
    • Replace
  11. Clamp
    • Replace
    • 7 Nm 
  12. To the Particulate Filter
  13. Gasket
    • Replace
    • Note installation position
  14. Turbocharger
    • Unit with exhaust manifold and pressure cell (cannot be replaced separately)
    • Removing and installing  , refer to TURBOCHARGER 
  15. Nut
    • Replace
    • 23 Nm 
    • Lubricate the exhaust manifold stud bolts with hot bolt paste.
  16. Heat Shield
  17. Hex Stud
    • 20 Nm 
  18. Nut
    • 23 Nm 
  19. Nut
    • 23 Nm 
  20. Control Wire
    • 23 Nm 
    • Do not change the angles of the control line
    • Install without tension
  21. Filter
    • For exhaust gas recirculation system
    • Removing and installing, refer to FILTER
  22. Brace
    • For the turbocharger
  23. Seal
    • Replace
  24. Banjo Bolt
    • Replace
    • 60 Nm 
  25. O-ring
    • Replace
  26. Oil Return Line
    • Install without tension
  27. Bolt
    • 15 Nm 
  28. Pulsation Damper
  29. Connecting Pipe
    CAUTION:

    Do not bend or stretch the connecting pipe decoupling element. Cracks could develop.

    • Install without tension
  30. Nut
    • 20 Nm 
    • Lubricate the exhaust manifold stud bolts with hot bolt paste.
  31. Connecting Pipe
  32. Seal
    • Replace if damaged
  33. Connecting Piece
  34. O-ring
    • Replace if damaged
  35. Intake Scoop
    • Ensure seated tightly
    • Clean if there are contaminants
    • With positive crankcase ventilation heating element -N79-
  36. Bolt
    • 8 Nm 
  37. Exhaust Gas Temperature Sensor 1 -G235-
    • Only lubricate the threads with hot bolt paste