seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

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Sealing flange and flywheel: Installing and removing: > < Engine: Disassembling and assembling

Leon Mk1

Piston position on the TDC: checking.
Piston position on the TDC: checking.
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 protrusionNotch/hole
identification
0.91 mm … 1.00 mm1
1.01 mm … 1.10 mm2
1.11 mm … 1.20 mm3

   
Cylinder head identification
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

Sealing flange and flywheel: Installing and removing: > < Engine: Disassembling and assembling