Cylinder head, camshafts, overview: Notes
WARNING: This page is about a different car, the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
1 - 50 Nm plus an additional 180 °
2 - Camshaft sprocket
3 - Seal
- Replacing → Sealing ring for exhaust camshaft, replacing .
4 - Cylinder head
5 - Valve guide
- Checking → Valve guides, checking
6 - Valve stem seal
7 - Valve spring
8 - Top valve spring retainer
9 - Valve keepers
10 - Hydraulic valve play balancing element
- Do not interchange
- Lubricate contact surface
11 - Fitted key
- Check for secure seat
12 - Exhaust camshaft
- Check radial clearance using Plastigage (roller cam follower removed) wear limit: 0.1 mm
- Run-out: max. 0.035 mm
13 - Bearing bracket
- With integrated camshaft bearings
- Clean sealing surface, reworking is not permitted.
- Remove old sealant residue.
14 - 8 Nm plus an additional 90 °
- Replace
15 - Camshaft adjuster
16 - 20 Nm plus an additional 45 °
- Replace
17 - Intake camshaft
- Check radial clearance using Plastigage (roller cam follower removed) wear limit: 0.1 mm
- Run-out: max. 0.035 mm
18 - Chain tensioner
- Removing → Camshaft adjuster, removing and installing Camshaft timing adjusters, removing and installing
- Before removing, secure with Locking Pin T10115
19 - Drive chain
- Check for wear
20 - 10 Nm
21 - 10 Nm
22 - Phase sensor
23 - Exhaust valve
- Do not rework, only lapping is permitted
- Valve dimensions Valve dimensions
- Check valve guides → Valve guides, checking
24 - Intake valve
- Do not rework, only lapping is permitted
- Valve dimensions Valve dimensions
- Check valve guides → Valve guides, checking
25 - Sealing cap
- Replace
- Removing: When guide frame is installed: Pierce through one side of cover with an awl and pry it out
- Installing: Without sealant press in with thrust piece 3334 1 to 2 mm deep