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Checking camshaft axial clearance > < Repairing valve gear

Golf Mk6

Assembly overview
   
Assembly overview
1 - 40 Nm + 1/4 turn (90°) further
q   Left-hand thread.
q   Renew.
2 - Camshaft adjuster
q   Must not be dismantled.
q   Removing and installing → Chapter.
3 - Camshaft pulley
q   Note position when installing timing chain.
4 - O-ring
q   Renew if damaged.
q   Before installing, coat lightly with engine oil.
5 - Inlet camshaft control valve 1 -N205-
6 - 10 Nm
7 - 10 Nm + 1/4 turn (90°) further
q   Renew.
q   Tighten from inside outwards.
8 - Camshaft housing
  Caution
The studs (M6x80) must be screwed into cylinder head before installing camshaft housing.
The camshaft housing is guided by the studs, so that the roller rocker fingers do not slip off the supporting elements.
q   Removing and installing → Chapter
q   Remove sealant residue.
q   Coat with D 154 103 A1 before fitting.
q   When installing, fit vertically from above onto studs and dowel pins.
9 - 10 Nm
10 - Cap
q   For inlet camshaft.
q   For exhaust camshaft.
11 - Roller rocker finger
q   Check roller bearing.
q   Oil contact surface.
q   When installing, secure to supporting element using securing clip.
12 - Valve cotters
13 - Valve stem seal
q   Renew.
14 - Support element
q   Check oil spray holes.
q   With hydraulic valve clearance compensation.
q   Do not interchange.
q   Before installing, check camshaft axial clearance → Chapter.
q   Oil contact surface.
15 - Valve guide
q   Checking → Chapter.
16 - Valve spring
q   To remove and install with cylinder head removed, use valve spring tool -3362-.
q   With cylinder head installed → Chapter.
17 - Cylinder head
q   Removing and installing → Chapter
q   Reworking valve seat → Chapter.
q   Reworking sealing surface → Fig..
18 - Valves
q   Do not rework, only lapping-in is permitted.
q   Valve dimensions → Fig.
19 - Exhaust camshaft
q   Do not interchange with inlet camshaft.
q   Checking axial clearance → Chapter.
q   Coat with oil before inserting (also axial bearing shoulder).
20 - Guide sleeve
21 - Inlet camshaft
q   With cam for high-pressure pump -arrow-.
q   Before removing, remove and renew bucket tappet for high-pressure pump.
q   Do not interchange with exhaust camshaft.
q   Checking axial clearance → Chapter.
q   Coat with oil before inserting (also axial bearing shoulder).
22 - 50 Nm + 1/4 turn (90°) further
q   Always renew after removing.

   
Reworking cylinder head sealing surface
Cylinder head reworking dimension: a = at least 108.25 mm.
  Note
When the sealing surface has been reworked, the valves must be set deeper by the same amount (valve seat inserts reworked) or valves will contact pistons. When doing this, ensure that the permissible minimum dimension is maintained → Chapter.
  N15-0658

Checking camshaft axial clearance > < Repairing valve gear