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Home >> Audi >> 2012 >> TT RS >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 2.5L - Cylinder Head, VALVETRAIN - Engine Code(S): CEPB (Coupe) >> 15 Cylinder Head, VALVETRAIN >> Description And Operation >> Cylinder Head Cover And Cylinder Head Overview

Cylinder Head Cover And Cylinder Head Overview

Fig 1: Identifying Cylinder Head Cover And Cylinder Head Overview
GWWA15-11065Courtesy of AUDI OF AMERICA, LLC
  1. Cylinder Head Gasket
    • Removing and installing, refer to CYLINDER HEAD 
    • Note installation position: The part number faces toward the cylinder head
    • Install with sealant
  2. Drain Plug
    • 15 Nm
    • Replace
  3. Cylinder Head
    • Removing and installing, refer to CYLINDER HEAD 
    • Must be seated on the alignment pins
    • Check for distortion, refer to Fig 4
    • Reworking dimension, cylinder head, refer toFig 5
    • After replacing, change coolant and engine oil
  4. Engine Lifting Eye
  5. Bolt
    • 22 Nm
  6. Gasket
    • For cylinder head cover
    • Replace if damaged or leaking
  7. Cylinder Head Cover
  8. Bolt
    • Replace if the seal is damaged
    • Tightening sequence, refer to Fig 2
  9. Bolt
    • 3.2 Nm
  10. Housing
    • For crankcase ventilation
  11. Seals
    • Replace
  12. Ignition Coil
  13. Drain Plug
    • 35 Nm
  14. Seal
    • Replace
  15. Camshaft Adjustment Valve 1 -N205-
  16. Bolt
    • 2.4 Nm
  17. O-ring
    • Replace
  18. Exhaust Camshaft Adjustment Valve 1 -N318-
  19. Bolt
    • 2.4 Nm
  20. O-ring
    • Replace
  21. Bolt
    • Replace
    • Follow the sequence when loosening, refer to Fig 2
    • Tightening specification and sequence, refer to Fig 3
  22. Bolt
    • Replace
    • Follow the sequence when loosening, refer to Fig 2
    • Tightening specification and sequence, refer to Fig 3
Fig 2: Identifying Cylinder Head Cover, Tightening Sequence
GWWA15-10572Courtesy of AUDI OF AMERICA, LLC

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

Stage Bolt Tightening Specifications
1. -1 through 16- Install all the way in by hand.
2. -1 through 16- 10 Nm
Fig 3: Identifying Cylinder Head, Tightening Sequence
GWWA15-10573Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in 6 steps in the sequence shown:

Stage Bolts Tighten Specifications/Angle
1. -1 through 12- 10 Nm
2. -1 through 12- 40 Nm
3. -1 through 12- Tighten 90° further
4. -1 through 12- Tighten 90° further
5. -13- 8 Nm
6. -13- Tighten 90° further
Fig 4: Checking Cylinder Head for Distortion
GWWA15-10931Courtesy of AUDI OF AMERICA, LLC

-- Check the cylinder head on several locations for distortion using a straight edge 500 mm VAS 6075 and a feeler gauge.

Fig 5: Identifying Cylinder Head Refacing Dimension
GWWA15-0169Courtesy of AUDI OF AMERICA, LLC

Resurfacing the cylinder head (face grinding) is only permissible to minimum dimension -a-.