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Cylinder head: removal and installation (2.0 litre engine) (without free space for the screwing tool) > < Cylinder head: removal and installation (2.0 litre engine) (with free space for the screwing tool)

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Cylinder head: Assembly overview (2.0 litre engine) (without free space for the screwing tool)
Cylinder head: Assembly overview (2.0 litre engine) (without free space for the screwing tool)
  Note
t  Replace the cylinder head cover bolts.
t  During assembly, renew oil seals and gaskets as well as self-locking nuts and bolts that are tightened by turning through to a specified angle.
t  The plastic protectors fitted to protect the open valves must only be removed immediately before fitting the cylinder head.
t  When replacing the cylinder head or cylinder head gasket, the old coolant must also be replaced.
   
1 - Cylinder head gasket
q   Replace
q   Note the fitting position: The part number should point to the cylinder head
2 - Bolt.
q   25 Nm
3 - Transport plate
4 - Bolt.
q   Tighten in 2 stages:
1.  Tighten to 8 Nm
2.  Use rigid wrench to turn 90° further.
5 - Cylinder head
q   Removing and installing
q   Check for deformations → Fig.
6 - Cylinder head bolt
q   Replace
q   Note procedure when loosening → Fig.
q   Note procedure when tightening → Fig.
q   Tighten in 3 stages:
1.  Tighten to 40 Nm
2.  Use rigid wrench to turn 90° further.
3.  Use rigid wrench to turn 90° further.
7 - O ring
q   Replace
q   Lubricate with engine oil
8 - Actuator for variable valve timing
9 - Bolt.
q   5 Nm
10 - O ring
q   Replace
q   Lubricate with engine oil
11 - Sealing plug
q   5 Nm
q   With ball head for engine cover panel
12 - Sealing plug
q   With gasket
13 - O ring
q   Replace
q   Lubricate with engine oil
14 - Sealing plug
15 - To intake manifold
16 - Heat shield
17 - Bolt.
q   20 Nm
18 - Bolt.
q   20 Nm
19 - To intake manifold/turbocharger
20 - Breather line
21 - O ring
q   Not available as a separate replacement part
22 - Seal
q   Not available as a separate replacement part
23 - Engine cover panel
24 - Bolt.
q   Tightening sequence → Fig.
25 - Crankcase breather
26 - Seal
q   Not available as a separate replacement part
27 - Seal
q   If this is damaged, replace it
28 - Vacuum pump
q   removing and fitting → Rep. gr.47
29 - Bolt.
q   Tightening torque → Rep. gr.47
30 - Connecting nipple
31 - Bracket
32 - Bolt.
q   9 Nm
33 - O ring
q   Replace
q   Lubricate with coolant
34 - Transport plate
35 - Bolt.
q   25 Nm
36 - Bolt.
q   9 Nm
37 - Hall sender -G40-
38 - Separating plate
39 - O ring
q   Replace
q   Lubricate with engine oil

   
Crankcase breather system - tightening torque
  Note
t  The bolts are thread-forming bolts. When renewing the cylinder head, it is important that you use only genuine bolts since the cylinder head is supplied without threaded holes for attachment of the crankcase breather.
t  Do NOT make threaded holes using a thread tap.
–  Tighten bolts for crankcase breather system in the sequence -1 ... 10- to 11 Nm.
  A15-10605
Checking cylinder head for distortion
–  Use straight edge and feeler gauge to measure cylinder head for distortion at several points.
t  Maximum permissible deformation: 0.05 mm
  V15-0654
Slackening cylinder head bolts
–  Remove bolts -arrows-.
–  Slacken cylinder head bolts in the sequence -1 ... 10-.
  E15-10108
Cylinder head tightening sequence
–  Tighten cylinder head bolts in the sequence -1 ... 10- as follows:
1.  Tighten with torque wrench initially to 40 Nm.
2.  Use fixed wrench to turn 90° further.
3.  Use fixed wrench to turn 90° further.
4.  Pre-tighten the bolts -arrows- to 8 Nm.
5.  Retighten the bolts 90° -arrows- with the rigid wrench.
  E15-10109

Cylinder head: removal and installation (2.0 litre engine) (without free space for the screwing tool) > < Cylinder head: removal and installation (2.0 litre engine) (with free space for the screwing tool)