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Home >> Audi >> 2013 >> TT RS >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> 2.5L - Turbocharger, Supercharger - Engine Code(S): CEPB (Coupe) >> 21 Turbocharger, Supercharger >> Description And Operation >> Turbocharger Overview >> Part 1

Part 1

Fig 1: Identifying Turbocharger Overview (1 Of 3)
GWWA21-10416Courtesy of AUDI OF AMERICA, LLC
  1. Coolant Supply Pipe
  2. Banjo Bolt
    • 37.5 Nm
  3. Seals
    • Replace
  4. Exhaust Gas Temperature (EGT) Sensor 1 -G235-
  5. Turbocharger
    • One unit with the exhaust manifold
    • Removing and installing, refer to TURBOCHARGER 
  6. Heated Oxygen Sensor (HO2S) -G39- with Oxygen Sensor (O2S) Heater -Z19-
  7. Nut
    • Tightening specification and sequence, refer to Fig 2
  8. Bolt
    • 9 Nm
  9. Coolant Return Pipe
  10. Seals
    • Replace
  11. Banjo Bolt
    • 37.5 Nm
  12. Oil Supply Pipe
  13. Bolt
    • 9 Nm
  14. Seals
    • Replace
  15. Banjo Bolt
    • 37.5 Nm
  16. Banjo Bolt
    • 37.5 Nm
  17. Seals
    • Replace
  18. Gasket
    • Replace
  19. Securing Strip
    • Stays installed when removing turbocharger
  20. Nut
    • 30 Nm
    • Replace
    • Tighten the center nut for the securing strip first
  21. O-ring
    • Replace
  22. Gasket
    • Replace
  23. Oil Return Pipe
  24. Gasket
    • Replace
  25. Bolt
    • 9 Nm
  26. Bolt
    • 9 Nm
  27. Bolt
    • 9 Nm
Fig 2: Identifying Turbocharger - Tightening Specification and Sequence
GWWA21-10479Courtesy of AUDI OF AMERICA, LLC
NOTE:

Replace the nuts for the turbocharger.

-- Tighten the bolts in 4 steps in the sequence shown:

Stage Bolts Tightening Specifications
1. -1 through 6- 15 Nm
2. -1 through 6- 33 Nm
3. -1 through 6- 33 Nm (1)
4. -1 through 6- 33 Nm (1)
(1) If kept constant, all of the bolts will remain tightened to 33 Nm after the seal for the turbocharger is installed.