Overview - VALVETRAIN
WARNING: This page is about a different car, the 2022 Audi SQ5, 2022 Audi Q5 e, 2022 Audi Q5, and 2021 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.
- Exhaust Valve
- Do not rework, only lapping is permitted
- Valve Dimensions. Refer to VALVE DIMENSIONS .
- Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .
- Intake Valve
- Do not rework, only lapping is permitted
- Valve Dimensions. Refer to VALVE DIMENSIONS .
- Valve Guides, Checking. Refer to VALVE GUIDES, CHECKING .
- Cylinder Head
- Overview. Refer to OVERVIEW - CYLINDER HEAD .
- Valve Stem Seal
- Allocation. Refer to Fig 5.
- Replacing. Refer to VALVE STEM SEALS, REMOVING AND INSTALLING .
- Valve Spring
- Installation position and allocation. Refer to Fig 3.
- Valve Spring Retainer
- Valve Retainers
- Hydraulic Lifter
- Do not interchange
- Coat the contact surface with engine oil
- Roller Rocker Lever
- Removing and Installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
- Mark the installed position for reinstallation.
- Check the roller bearing for ease of movement
- Coat the contact surfaces with engine oil
- Allocation. Refer to Fig 4.
- Clip
- For hydraulic lifter
- Exhaust Camshaft
- Removing and Installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
- Check the radial clearance using Plastigauge® (roller rocker lever removed)
- Axial play: new 0.1 +0.102-0.05 mm
- Radial clearance: 0.024 to 0.066 mm
- Maximum run out: 0.04 mm
- After removing and installing or replacing an adaptation must be performed. Refer to PERFORM ADAPTATIONS AFTER COMPONENT REPLACEMENT .
- Spring
- Ball
- For sliding bar
- Installing. Refer to SLIDING BAR BALL, INSTALLING .
- Cylinder Head Cover
- With integrated camshaft bearings
- Removing and Installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
- Only clean the sealing surface, reworking is not permitted.
- Remove old sealant residue.
- Pay attention to the cylinder head cover pairing number and cylinder head. Refer to Figure.
- Bolt
- Tightening Specifications and Sequence. Refer to Fig 2.
- Replace after removing
- O-Ring
- Not available separately; replace if leaking -item 18- OVERVIEW - VALVETRAIN => List Item: Cam Adjustment Actuator or damaged
- Coat with engine oil
- Bolt
- 4.5 Nm
- Cam Adjustment Actuator
- Cam Adjustment Actuator 1 -F366-
- Cam Adjustment Actuator 2 -F367-
- Cam Adjustment Actuator 3 -F368-
- Cam Adjustment Actuator 4 -F369-
- Cam Adjustment Actuator 5 -F370-
- Cam Adjustment Actuator 6 -F371-
- Cam Adjustment Actuator 7 -F372-
- Cam Adjustment Actuator 8 -F373-
- Removing and Installing. Refer to CAM ADJUSTMENT ACTUATOR, REMOVING AND INSTALLING .
- Ball Pin
- 9 Nm
- For the engine cover
- Quantity: 2
- Bracket
- For the wiring harness
- Bolt
- 9 Nm
- Plugs
- O-Ring
- Replace after removing
- Intake Camshaft
- Removing and Installing. Refer to CAMSHAFT, REMOVING AND INSTALLING .
- Check the radial clearance using Plastigauge® (roller rocker lever removed)
- Axial play: new 0.1 +0.102-0.05 mm
- Radial clearance: 0.024 to 0.066 mm
- Maximum run out: 0.04 mm
- After removing and installing or replacing an adaptation must be performed. Refer to PERFORM ADAPTATIONS AFTER COMPONENT REPLACEMENT .
- Alignment Pin
- Quantity: 2
Cylinder Head Cover - Tightening Specifications and Sequence
- Replace bolts that were tightened with an additional turn after removing them.
- Pay attention that the cylinder head cover is not tilted.
-- Tighten the bolts -1 to 6- in steps in the sequence shown:
| Step | Tightening Specification/Additional Turn |
|---|---|
| 1. | Install all the way in multiple steps by hand |
| 2. | 8 Nm |
| 3. | 90° additional turn |
Valve Spring, Installation Position and Allocation
- The tight spring coils -arrow- face toward cylinder head.
- Length of the valve spring, intake side, approximately 45.5 mm.
- Length of the valve spring, exhaust side, approximately 51.0 mm.
Roller Rocker Lever, Allocation
- Roller rocker lever, intake side, dimension -b- = 8.0 mm
- Roller rocker lever, exhaust side, dimension -a- = 5.4 mm
Valve Stem Seal Allocation
A -
Valve Stem Seal with a Sealing Lip -A-, Colored Green
- For the intake side
B -
Valve Stem Seal with Two Sealing Lips -B-, Colored Red
- For the exhaust side