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SEAT Workshop Service and Repair Manuals

Checking compression > < Removing and installing camshaft housing
Removing and installing cylinder head
Removing and installing cylinder head
t  Removing → Anchor
t  Fitting → Anchor
t  Tightening torques → Anchor
   
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
t  Suspension tool -10-222A-, see equivalent → Anchor
t  Adapter -10-222A/1-, see equivalent → Anchor
t  Socket -T10358-, see equivalent → Anchor
t  Torque wrench -VAG1332-, see equivalent → Anchor.
t  Torque wrench -VAG 1331-, see equivalent → Anchor.

Removing
–  Drain coolant → Chapter
–  Remove valve timing housing → Chapter.
–  Remove the thermostat housing from the cylinder head → Chapter.
–  Remove the distribution chain and the oil pump drive chain → Chapter
–  Remove turbocharger → Chapter.
Regulating flap control unit -J808- and throttle control unit -J338-: Removing and installing → Chapter.
–  Now remove the intake manifold → Chapter.
   
–  Unscrew the attachment bolt for the gearbox and tighten the support -T10358-, as shown in the figure.
–  Fit the hooks of the support device -10-222A- to the bracket -T10358-, as shown in the figure.
–  Turn the spindle until the hooks are slightly tensioned.
  N15-10347
–  Release the hook -1- in the left hand side ring and move the spindle to the left hand side of the support device -10-222A-.
–  Remove camshaft housing → Chapter.
–  Remove roller rocker fingers together with support elements and lay aside on a clean surface.
–  Ensure that the roller rocker fingers and the support elements are not mixed up.
  N15-10348
–  Loosen socket head bolts in the sequence given and then remove completely.
–  Carefully remove cylinder head.
Fitting
Install in reverse order to dismantling, noting the following:
Requirements:
l  Pistons must not be at TDC.
  Note
t  Do not remove new cylinder head gasket from its packing until immediately before installing.
t  Handle new gasket with extreme care. If damaged, leaks may result.
–  Place clean cloths in cylinders so that no dirt or emery cloth particles can get in between cylinder wall and piston.
–  Now carefully clean sealing surfaces of cylinder head and cylinder block. Ensure no long grooves or scratches are produced (if using sandpaper. it must be at least 100 grain).
–  Carefully remove metal particles, emery residue and cloths.
–  Set No. 1 cylinder piston to top dead centre and then turn crankshaft back slightly.
–  Fit new cylinder head gasket. Lettering (Part No.) must be readable.
–  Fit cylinder head. When doing this, observe centring pins in cylinder block.
–  Fit new cylinder head bolts and tighten by hand.
  N15-0026
–  Tighten the cylinder head bolts in the sequence shown.
–  Tighten all bolts to 30 Nm.
–  Then tighten all bolts 1/4 turn (90°) using a rigid wrench.
–  Then tighten all bolts again 1/4 turn (90°)
–  Install supporting elements in cylinder head and fit respective roller rocker finger onto respective valve stem end or supporting element.
–  Install camshaft housing → Chapter.
–  Adjust valve timing → Chapter.
Continue installation following reverse order for removing.
Tightening torques
  V15-0738
Components:Nm
Cylinder head screws30 Nm + further 1/4 (90°) + 1/4 turns. (90°) → Remark

1)  Tighten in three stages. Use new screws
   

Checking compression > < Removing and installing camshaft housing