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Check the compression > < Work procedure

Leon Mk2

Assemble
Assemble
  Note!
t  Remove the cylinder head gasket from its wrapping only just before assembly.
t  Treat the new gasket with utmost care. Damage to the gaskets can cause leaks.
–  Place clean rags in the cylinder so that neither filth nor grinder remains between the cylinder guide and the piston.
–  The entrance of filth and grinder into the refrigerant must also be avoided.
–  Now clean the hermetic surfaces of the cylinder head and the cylinder block thoroughly. Take care not to scratch the parts (when grinding paper is used, the grade should not be less than 100).
–  Remove all the sand and polish residue as well as the other rags.
–  Place the piston in the first cylinder, in the upper neutral position and turn the crankshaft a little ways backward.
   
–  To centre screw the guide bolts of the -U-20004/1- or -3450- in the rear exterior holes for the cylinder head bolts -arrows-.
–  Install the new cylinder head gasket. The inscription (replacement part number) should be legible.
–  Install the cylinder head, insert the other 8 bolts and screw them in by hand.
–  With the bolt removal device of the -U-20004/1- or -3450- unscrew the guide bolt for the bolt holes. For this procedure, the bolt removal device must be turned to the left until the bolts are free.
–  Now insert the other two bolts into the cylinder head and tighten them by hand.
  V15-0473
–  Tighten the cylinder head bolts in the order indicated:
Engines with aluminium cylinder block:
–  Tighten all of the bolts with 30 Nm.
–  Later turn all of the bolts 1/4 (90°) rotation with a strong wrench.
–  And then tighten all of the other bolts by 1/4 (90°) rotation.
Engines with grey cast cylinder block:
–  Apply a primary tightening to all of the bolts with 40 Nm.
–  Next, tighten all of the bolts with 60 Nm.
–  Next, turn all of the bolts 1/4 (90°) rotation with a strong wrench.
–  And then tighten all of the other bolts by 1/4 (90°) rotation.
The assembly is continued in the inverse order of the disassembly and following the logical steps.
How the toothed belt should be assembled and the control times adjusted → Chapter.
How the new refrigerant should be filled → Chapter.
  V15-0738

Check the compression > < Work procedure