Overview - VALVETRAIN

WARNING: This page is about a different variant/trim than selected.

Fig 1: Exploded View Of Valvetrain

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head
- Overview. Refer to OVERVIEW - CYLINDER HEAD .
Alignment Pins
Roller Rocker Lever
- Mark the installed position for reinstallation.
- Check the roller bearing for ease of movement
- Lubricate the running surfaces before installing
- To install clip with clip -item- 4 on the hydraulic lifter -item- 5
Clip
- Not available separately.
- Check for secure fit
Hydraulic Lifter
- Clipped in the roller rocker lever -item- 3
- Mark the installed position for reinstallation.
- Lubricate the running surfaces before installing
Valve Keepers
Valve Spring Retainer
Valve Spring
- Installation position. Refer to Fig 3.
Valve Stem Seal
- Different versions for the intake and exhaust side. Refer to Fig 2.
- Replacing. Refer to VALVE STEM SEALS, REMOVING AND INSTALLING .
Intake Valve
- Do not rework, only lapping is permitted
- Mark the installed position for reinstallation.
- Checking. Refer to Vehicle Diagnostic Tester.
- Valve Dimensions. Refer to VALVE DIMENSIONS .
- Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .
Exhaust Valve
- Do not rework, only lapping is permitted
- Mark the installed position for reinstallation.
- Checking. Refer to Vehicle Diagnostic Tester.
- Valve Dimensions. Refer to VALVE DIMENSIONS .
- Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .

Valve Stem Seal - Different Versions

Fig 2: Valve Stem Seal - Different Versions

Courtesy of AUDI OF AMERICA, LLC

A - Exhaust side

B - Intake side

Installation Position of Valve Spring

Fig 3: Camshaft Cylinder Head Bank 1 (Right)

Courtesy of AUDI OF AMERICA, LLC