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Checking compression pressures > < Work sequence

Leon Mk2

Installing
Installing
  Note!
t  Clean the blind holes in the crankshaft bolts in the engine block, so that they are free of oil and coolant.
t  Only remove the new cylinder head gasket from its packing im-mediately before 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 cloth particles can get in between cylinder wall and piston.
–  Also prevent dirt and emery cloth particles from getting into the coolant.
–  Carefully clean cylinder head and cylinder block sealing surfaces. Thereby ensuring that no scoring or scratches are formed (when using abrasive paper the grade must not be less than 100).
–  Carefully remove metal particles, emery remains and cloths.
–  If the crankshaft has turned, position the piston of cylinder 1 to TDC and turn the crankshaft back slightly.
   
–  To centralize screw guide pins from -T20049- into holes for cylinder head bolts 8 and 10.
  Note!
The tolerance of the centring holes has narrowed in the upper area. Before installing the cylinder head, check if the guide pins can be removed by pulling them upwards. If necessary, file the edges of the guide pins slightly.
–  Fit new cylinder head gasket. Lettering (Part No.) must be readable.
–  Fit cylinder head, screw in 8 remaining cylinder head bolts and tighten by hand.
–  Unscrew guide pins through bolt hole using pin driver from -T20049-. To do this turn pin driver anti-clockwise until the pins are free.
  V15-0738
–  Fit remaining cylinder head bolts and tighten hand-tight.
–  Tighten cylinder head in tightening sequence as follows:
–  Pretighten all bolts to 40 Nm.
–  Then tighten all bolts a 1/4 turn (90°) further using a ridged wrench.
–  Then tighten all bolts again a 1/4 turn (90°) further.
The rest of the assembly is basically a reverse of the dismantling sequence.
–  Installing toothed belt and adjusting valve timing → Chapter.
–  Filling with new coolant → Chapter.
  V15-0738

Checking compression pressures > < Work sequence