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Testing the compression > < Removing and installing camshaft housing|Install

Octavia Mk2

Removing and installing cylinder head
Removing and installing cylinder head
Special tools and workshop equipment required
t  Supporting device -T30099-
t  Base -T30099/1-
t  Support -T10358-
t  Sealant remover gasket stripper (bearing code GST, bearing article no. R 34402), manufacturer Retech s.r.o.
Removing
Observe safety measures → Chapter.
Observe rules for cleanliness → Chapter.
  WARNING
Release pressure in the high pressure area of the fuel system → Chapter.
–  Drain the coolant from the engine cooling system and the charge air cooling system → Chapter.
Remove the following components:
t  Coolant regulator housing from cylinder head
t  Intake manifold → Chapter
t  Exhaust gas turbocharger → Chapter
–  Fit supporting device -T30099-.
   
–  Unscrew the fixing screw for the gearbox and screw down the bracket -T10358 - as shown.
–  Support the engine via the spindle in its installed position and slightly pre-tension.
  Note
The timing case is removed with the existing engine mount and the bracket -T10358-.
–  Remove timing case → Chapter.
–  Remove the timing chain from the camshaft chain sprockets → Chapter.
  S15-0523
–  Remove the tensioning rail -1- and the sliding rail -2- from the bearing bolts.
–  Removing the camshaft housing → Chapter.
–  Remove the roller rocker arm together with the supporting elements and lay aside on a clean surface.
–  Ensure that the roller rocker arms and the supporting elements are not mixed up.
  A13-10051
–  Release the cylinder head bolts in the specified sequence and remove.
–  Carefully remove the cylinder head.
Install
Precondition
l  The pistons must not be positioned at top dead centre.
  Note
t  Remove the new cylinder head gasket from its wrapping immediately before fitting.
t  Treat the new seal with the utmost care. Any damage will result in leaks.
t  There must be no oil or coolant in the blind holes of the cylinder head bolts in the cylinder block.
–  Stuff clean cloth into the cylinders to avoid any dirt getting in between cylinder wall and piston.
  WARNING
Wear protective gloves when working with sealant and grease remover!
–  Make sure that when cleaning the cylinder head and cylinder block no foreign bodies can get into the cylinder or into the oil and coolant galleries.
–  Carefully remove residual sealant from the cylinder head and cylinder block with chemical sealant remover.
–  Position piston of cylinder 1 to top dead centre and slightly turn the crankshaft anticlockwise again.
–  Position the new cylinder heads. Text (part number) must be visible.
–  Insert the cylinder head. Pay attention to the dowel pins in the cylinder block.
–  Insert new cylinder head bolts and tighten by hand.
  S15-0289
–  Tighten cylinder head bolts in the tightening order shown as follows:
t  Tighten all screws to 30 Nm.
t  Then, torque all bolts further to 90° (1/4 turn) with a rigid wrench.
t  Finally, once again turn all bolts through a further 90° (1/4 turn).
–  Insert the supporting elements in the cylinder head and position the relevant roller rocker arm on the valve stem ends or supporting elements.
–  Installing camshaft housing → Chapter.
Further installation occurs in a similar way in reverse order to removal.
–  Top up and bleed cooling system → Chapter.
  S15-0290

Testing the compression > < Removing and installing camshaft housing|Install