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Checking compression pressure > < Removing

Leon Mk1

Installing
Installing
  Note!
t  Only remove the new cylinder head gasket from its packaging immediately prior to installing.
t  Handle the new gasket with extreme care. Damaging will lead to leaks.
–  Place a clean cloth in cylinders so that no dirt or emery particles can get between cylinder wall and piston.
–  Carefully clean cylinder head and cylinder block sealing surfaces. Ensure that no scoring or scratches are formed (when using emery/abrasive cloth/paper the grade must not be less than 100).
–  Carefully remove metal particles, emery remains and cloths.
–  Turn crankshaft so that No. 1 cylinder piston is positioned at top-dead-centre (TDC), then turn crankshaft back slightly.
   
–  Position camshaft sprockets so that the marks align as shown.
–  Place new cylinder head gasket in position. The lettering (part number) must be readable.
–  Fit cylinder head. Note centralizing pins in cylinder block.
–  Fit new cylinder head bolts and tighten hand tight.
  N13-0178
–  Tighten cylinder head in the 4 tightening sequences as shown:
–  1. Pre-tighten using a torque wrench to:
   l sequence = 40 Nm
   ll sequence = 60 Nm
–  2. Tighten further using a rigid wrench to:
   III sequence = 1/4 turn (90°)
   IV sequence = 1/4 turn (90°)
The remainder of assembly is basically a reverse of the removal sequence.
Fitting toothed belt and checking timing → Chapter.
Filling with new coolant → Chapter.
–  Read fault memories of all control units → Vehicle diagnosis, testing and information systemVAS 5051.
–  Carry out test drive and read fault memories of all control units again.
  V15-0738

Checking compression pressure > < Removing