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Home >> Audi >> 2022 >> S7 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head, VALVETRAIN Servicing (2.9L & 3.0L) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Overview - VALVETRAIN

Overview - VALVETRAIN

Fig 1: Exploded View Of Valvetrain
GWWA15-11889Courtesy of AUDI OF AMERICA, LLC
  1. Exhaust Valve
    • Do not rework, only grinding is permitted
    • Mark the installed position for reinstallation.
    • Valve Dimensions. Refer to VALVE DIMENSIONS .
    • Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .
  2. Valve Stem Seal
  3. Valve Spring
    • Installation position:
      • Intake Valve. Refer to Fig 2.
      • Exhaust Valve. Refer to Fig 3.
  4. Valve Spring Retainer
  5. Valve Retainers
  6. Roller Rocker Lever
    • Mark the installation position with paint for reinstallation
    • Check the roller bearing for ease of movement
    • Oil the running surfaces before installing
    • Clipped in with the clamp -item-  Clip on the hydraulic lifter -item-  Hydraulic Lifter
  7. Clip
    • Not available separately.
    • Check for secure fit
  8. Hydraulic Lifter
    • Clipped in the roller rocker lever -item-  Roller Rocker Lever
    • Mark the installation position with paint for reinstallation
    • Oil the running surfaces before installing
  9. Cylinder Head
  10. Intake Valve
    • Do not rework, only grinding is permitted
    • Mark the installed position for reinstallation.
    • Valve Dimensions. Refer to VALVE DIMENSIONS .
    • Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .

Installation Position of the Intake Valve Spring

Fig 2: Camshaft Cylinder Head Bank 1 (Right)
GWWA15-10101Courtesy of AUDI OF AMERICA, LLC

Installation Position of the Exhaust Valve Spring

Fig 3: Installation Position of the Exhaust Valve Spring
GWWA15-12034Courtesy of AUDI OF AMERICA, LLC

Valve Stem Seal Allocation

Fig 4: Valve Stem Seal - Different Versions
GWWA15-11891Courtesy of AUDI OF AMERICA, LLC

A -

Exhaust Side, Red

B -

Intake Side, Green