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Engine cylinder head, valve gear > < Crankshaft: disassembly and assembly

Leon Mk1

Position of the piston in TDC: verification
Position of the piston in TDC: verification
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Dial gauge support ruler -T20026-, see equivalent → Anchor
t  Dial gauge
Checking sequence
  Note
To measure the position of the piston in TDC, turn the engine in the direction of the clock.
  W00-2306
When fitting new pistons or a lighter engine, the positions of the pistons in TDC must be verified. Depending on the protrusion measure of the pistons, fit a corresponding cylinder head gasket, according to the following table:
  E13-0026
Piston projectionIdentification
Holes/notches
0.91 mm … 1.00 mm1
1.01 mm … 1.10 mm2
0.91 mm … 1.00 mm3

   
Identification of cylinder head gasket
l  Part number = (-arrow 1-)
l  Handling code = (-arrow 2-) do not take into account
l  Holes = (-arrow 3-)
  Note
If the verification of the piston protrusion measurement returns values that differ greatly, to choose the correct gasket use the largest value.
  N15-0288

Engine cylinder head, valve gear > < Crankshaft: disassembly and assembly