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Home >> Audi >> 2003 >> RS 6 >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Exhaust System, Emission Controls - 4.2L V8 5V BITURBO - BCY >> Charge air system with turbocharger, servicing >> Turbocharger, overview

Turbocharger, overview

NOTE:
  • Illustration shows turbocharger of cylinder bank 2 (left).
  • Nuts and studs on turbocharger are subjected to high temperatures. Use only genuine parts. See parts catalog.

The following list pertains to Fig 1.

  1. 10 Nm 
  2. Air intake pipe 
  3. Air intake hose 
    • Remove any traces of oil or grease on hose connections and hoses of charge air system before installing. Do not apply lubricant.
  4. 10 Nm 
  5. Control pipe 
    • For Wastegate Bypass Regulator Valve -N75-
  6. Pressure pipe 
    • To opposite turbocharger
  7. O-ring 
    • Always replace
  8. Banjo bolt M8 - 20 Nm 
  9. Seal 
    • Always replace
  10. Pressure pipe 
    • Supply pipe for control pressure
    • To Wastegate Bypass Regulator Valve -N75-
  11. Banjo bolt M14 - 35 Nm 
  12. Seal 
    • Always replace
  13. Coolant pipe 
  14. Air intake hose 
    • Remove any traces of oil or grease on hose connections and hoses of charge air system before installing. Do not apply lubricant.
  15. Oil supply pipe 
  16. Sensor -1- for exhaust temperature -G235- / -G236- 
    • Connection of temperature sensor must face downward when installing. Guide line upward in a loop.
    • Tighten to 25 Nm
  17. 50 Nm 
    • Always replace
    • Align turbocharger before securing. See INSTALLING .
  18. Exhaust manifold 
  19. Gasket 
    • Always replace
  20. Banjo bolt M12-25 Nm 
  21. Banjo bolt M14-35 Nm 
  22. Coolant pipe 
  23. Seal 
    • Always replace
  24. 50 Nm 
    • Different versions possible
    • Always replace
  25. Front exhaust pipe 
  26. Gasket 
    • Always replace
  27. Turbocharger 
  28. Gasket 
    • Always replace
  29. 10 Nm 
  30. Oil return pipe 
    • To top section of sump
  31. 10 Nm 
  32. O-ring 
    • Always replace
  33. Fig 1: Exploded View Of Turbocharger Components
    G02723507Courtesy of AUDI OF AMERICA, INC.