Overview - VALVETRAIN
WARNING: This page is about a different car, the 2024 Audi A8 Quattro, 2023 Audi A8 Quattro, and 2022 Audi A8 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
- 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
- Valve Spring Retainer
- Valve Retainers
- 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
- Clip
- Not available separately.
- Check for secure fit
- 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
- 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 .
Installation Position of the Intake Valve Spring
- The tight spring coils -arrow- face toward the cylinder head.
Installation Position of the Exhaust Valve Spring
- The color marking -arrows- points upward.
Valve Stem Seal Allocation
A -
Exhaust Side, Red
B -
Intake Side, Green