volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Engine cylinder head, valve gear > < Checking piston projection at TDC
4-Cyl. diesel engine, Mechanics
Dismantling and assembling pistons and conrods
Piston and cylinder dimensions

Engine codes 1Z, AHU, AEY, AFN, AFN, ALE

Honing
dimension

Piston-ø

Cylinder bore-ø

Basic dimen.

mm

79.47

79.51

1st oversize

mm

79.72

79.76

2nd oversize

mm

79.97

80.01

Engine codes: 1Y, AAZ

Honing
dimension

Piston-ø

Cylinder bore-ø

Basic dimen.

mm

79.48

79.51

1st oversize

mm

79.73

79.76

2nd oversize

mm

79.98

80.01

Engine cylinder head, valve gear > < Checking piston projection at TDC