CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
3
Valve gear
Note
♦ Cylinder head and cylinder head cover must be renewed to‐
gether.
♦ After installing camshafts wait for approx. 30 minutes before
starting engine. The hydraulic compensation elements must
settle (otherwise valves will strike pistons).
♦ After working on the valve gear, turn the engine carefully at
least 2 rotations to ensure that none of the valves make con‐
tact when the starter is operated.
♦ Always renew gaskets and seals.
Removing and installing camshafts ⇒ page 185 .
Checking axial clearance of camshafts ⇒ page 200 .
Renewing valve stem seals ⇒ page 200 .
Checking valve guides ⇒ page 208 .
3.1
Assembly overview - valve gear
182
Rep. gr.15 - Cylinder head, valve gear
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
1 - Outlet valve
❑ Do not rework. Only lap‐
ping in is permitted.
❑ Valve dimensions
⇒ page 184
❑ Checking valve guides
⇒ page 208
2 - Cylinder head
❑ Renew oil non-return
valve in cylinder head
⇒ page 140
3 - Valve guide
❑ Checking ⇒ page 208
4 - Valve stem seal
5 - Valve springs
6 - Valve spring plate
7 - Cotters
8 - Hydraulic compensation el‐
ement
❑ Do not interchange
❑ Oil contact surfaces.
9 - Exhaust camshaft
❑ Check radial clearance
with Plastigage (roller
rocker fingers removed)
❑ Radial clearance with
bearing ∅ of 24 mm:
0.024 … 0.066 mm
❑ Radial clearance with
bearing ∅ of 32 mm:
0.030 … 0.051 mm
❑ Runout: max. 0.04 mm
❑ Removing and installing ⇒ page 185
10 - Cylinder head cover
❑ With integrated camshaft bearings.
❑ Clean sealing surface; reworking not permitted.
❑ Remove sealant residue.
11 - Bolt
❑ Renew
❑ Tightening sequence ⇒ page 184
12 - O-ring
❑ Renew
❑ Lubricate with engine oil
13 - Plug
14 - Inlet camshaft
❑ Check radial clearance with Plastigage (roller rocker fingers removed)
❑ Radial clearance with bearing ∅ of 24 mm: 0.024 … 0.066 mm
❑ Runout: max. 0.04 mm
❑ Removing and installing ⇒ page 185
3. Valve gear
183
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
15 - Cap
❑ Renew
❑ Removing sealing cap with cylinder head cover installed: pierce on one side with an awl and pry out
❑ Installing: press in 1 to 2 mm deep without sealant using thrust piece - T10174-
16 - Inlet valve
❑ Do not rework. Only lapping in is permitted.
❑ Checking valve guides ⇒ page 208
Tightening sequence for cylinder head cover
– Renew bolts.
1.
2.
3.
Fit bolts in the sequence -1 … 6- and hand-tighten in several
stages.
Tighten bolts in the sequence -1 … 6- to 8 Nm using torque
wrench.
Turn 90° further in the sequence -1 … 6- using a fixed
wrench.
Note
Take care to keep retaining frame straight.
Valve dimensions
Note
Never rework the inlet and exhaust valves. Only lapping-in is per‐
mitted.
Dimension
Inlet valve
33.85 ± 0.10
5.98 ± 0.007
103.97
Outlet valve
28.0 ± 0.1
5.955 ± 0.007
101.87
∅ a
∅ b
c
mm
mm
mm
∠°
α
45
45
184
Rep. gr.15 - Cylinder head, valve gear
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
3.2
Removing and installing camshaft
Special tools and workshop
equipment required
♦ Assembly tool - T10352-
♦ Engine codes CCZA, CCZB, CCZC, CCZD, CDAA, CDAB:
assembly tool - T10352/1-
♦ Counter-hold tool - T10355-
♦ Pin - T40011-
♦ Assembly lever - T40243-
♦ Locking tool - T40267-
♦ Camshaft clamp - T40271-
3. Valve gear
185
2024 VW Passat Owner's Manual
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