Overview - VALVETRAIN

Fig 1: Exploded View Of Valvetrain

Courtesy of AUDI OF AMERICA, LLC

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 .
Valve Stem Seal
- Different versions; allocation. Refer to Fig 4.
- Replacing. Refer to VALVE STEM SEALS, REMOVING AND INSTALLING .
Valve Spring
- Installation position:
  - Intake Valve. Refer to Fig 2.
  - Exhaust Valve. Refer to Fig 3.
Valve Spring Retainer
Valve Keepers
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 ) Clip on the hydraulic lifter ) Hydraulic Lifter
Clip
- Not available separately.
- Check for secure fit
Hydraulic Lifter
- Clipped in the roller rocker lever ) Roller Rocker Lever
- Mark the installation position with paint for reinstallation
- Oil the running surfaces before installing
Cylinder Head
- Shown for cylinder bank 2 (left)
- Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .
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 .

Fig 2: Camshaft Cylinder Head Bank 1 (Right)

Courtesy of AUDI OF AMERICA, LLC

Fig 3: Installation Position of the Exhaust Valve Spring

Courtesy of AUDI OF AMERICA, LLC

Fig 4: Valve Stem Seal - Different Versions

Courtesy of AUDI OF AMERICA, LLC