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Home >> Audi >> 2018 >> S3 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (CYLINDER HEAD, VALVETRAIN (4-Cylinder 2.0L 4V TFSI Engine) -- (A3 SEDAN)) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Overview - VALVETRAIN >> Overview - VALVETRAIN, Engine With One Camshaft Adjuster >> Part I

Part I

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For Valvetrain, Engine With One Camshaft Adjusters - Part II  . Refer to PART II .

Fig 1: Exploded View Of Valvetrain (Engine With One Camshaft Adjusters - Part I)
GWWA15-11710Courtesy of AUDI OF AMERICA, LLC
  1. Exhaust Valve
  2. Cylinder Head
  3. Valve Stem Seal
  4. Valve Spring
  5. Valve Spring Retainer
  6. Valve Retainers
  7. Hydraulic Lifter
    • Do not interchange
    • Lubricate the contact surface
  8. Clip
    • For hydraulic lifter
  9. Roller Rocker Lever
    • Mark the installed position for reinstallation.
    • Check the roller bearing for ease of movement
    • Lubricate the running surfaces before installing
    • Removing and installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
  10. Exhaust Camshaft
    • Check the radial clearance using Plastigage® (roller rocker lever removed)
    • Radial clearance: 0.024 to 0.066 mm
    • Run-out: maximum 0.04 mm
    • Removing and installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
  11. Cylinder Head Cover
    • With integrated camshaft bearings
    • Clean the sealing surface, reworking is not permitted.
    • Remove old sealant residue.
    • Removing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
  12. Bolt
    • Tightening Specifications and Sequence. Refer to Figure.
    • Always replace after removing
    • Loosening. Refer to Figure.
  13. Intake Camshaft
    • Check the radial clearance using Plastigage® (roller rocker lever removed)
    • Radial clearance: 0.024 to 0.066 mm
    • Run-out: maximum 0.04 mm
    • Removing and installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
  14. Alignment Pin
  15. Alignment Pin
  16. Intake Valve