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Removing and positioning the engine > < Assembly overview - crankcase

Leon Mk1

Checking piston position at TDC
Checking piston position at TDC
t  Test sequence → Anchor
t  Identification of cylinder head gasket → Anchor
   
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
t  Adjustment tool -VW 382/7-, please see Correspondence → Anchor
t  Adjustment tool -VW 385/17-, please see Correspondence → Anchor
t  Gauge -VAS 6079-, see equivalent → Anchor

   
Test sequence
–  Secure dial gauge -VAS 6079- with measuring bridge -VW 382/7- and measuring plate -VW 385/17- to cylinder block as shown in the illustration.
–  Measure the protrusion on each piston at different positions and the positions marked with -arrows- (as viewed in the longitudinal direction of the engine: front and rear on the piston).
–  Install the appropriate cylinder head gasket depending upon piston projection, according to following table:
  A13-10694
Piston projection on the upper edge of the engine blockIdentification
(No. of holes)
0.91 ... 1.00 mm1
1.01 ... 1.10 mm2
1.11 ... 1.20 mm3

   
Identification of cylinder head gasket
t  Part No. = -Arrow 1-
t  Holes = -Arrow 2-
t  Production code = -Arrow 3- (can be disregarded)
  Note
Different thicknesses of cylinder head gasket are fitted depending on the piston projection. When replacing the gasket, replace by a gasket of the same identification -arrow 3-.
  A15-10508

Removing and positioning the engine > < Assembly overview - crankcase