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Removing and installing cylinder head cover > < Cylinder head

Leon Mk1

Cylinder head: Assembly overview
   
Cylinder head: Assembly overview
1 - 10 Nm
q   Tightening sequence → Fig.
2 - Cylinder head cover
q   Removing and installing → Chapter
q   Tightening sequence → Fig.
3 - Seal
q   Renew if damaged or leaking
4 - Valve box
5 - Filler plug
6 - Seal
q   Renew if damaged or leaking
7 - 4 Nm
8 - Gasket for cylinder head cover
q   Renew if damaged or leaking
9 - Vacuum pump
10 - 4 Nm
11 - Camshaft control valve 1 -N205-
q   Removing and installing → Chapter
12 - Seal
q   Replace
13 - 10 Nm
14 - Wiring retainer
15 - Seal
q   Renew if damaged or leaking
16 - 10 Nm
17 - Housing
18 - Seal
q   Replace
19 - Transport lug
20 - 25 Nm
21 - 10 Nm
q   Stud for intake manifold
22 - Separating plate
23 - Cylinder head gasket
q   Replace
q   Note the fitting position: the part number faces the cylinder head.
24 - 10 Nm
25 - Hall sender -G40-
26 - Seal
27 - 10 Nm
q   Stud for tensioning roller
28 - 20 Nm
q   Stud for exhaust manifold
29 - Cylinder head
q   Check for deformations → Fig.
30 - Cylinder head bolt
q   Replace
q   Loosen following the indicated sequence → Fig.
q   Note correct sequence when tightening → Fig.
q   Tightening torque: 40 Nm + 1/2 turn (180º)

   
Tightening sequence for cylinder head cover
–  Proceed as follows:
1.  Screw in bolts -14-.
2.  Screw in bolts -1 … 14- in criss-cross pattern to10 Nm.
  N15-10047
Loosening cylinder head bolts
–  Loosen cylinder head bolts in the sequence indicated and remove.
  A15-0764
Cylinder head tightening sequence
–  Then tighten cylinder head bolts in the sequence -1 ... 10- as follows:
3.  Tighten with torque wrench initially to 40 Nm.
4.  Turn 90° (1/4 turn) further using a rigid wrench.
5.  Turn 90° (1/4 turn) further using a rigid wrench.
  A15-0767
Check whether the cylinder head is deformed
–  Use a straightedge ruler and feeler gauge to measure for deformation at several points.
t  Maximum permissible deformation: 0.05 mm.
  V15-0654

Removing and installing cylinder head cover > < Cylinder head