Cylinder Block Assembly: Testing and Inspection

Piston Projection in TDC, Checking

Special tools, testers and auxiliary items required

• Measuring bar (VW 382/7)

• Magnetic plate 50 mm diameter (VW 385/17)

• Dial gauge (VAS 6079)

Test Sequence

When installing new pistons or working with a partial engine, check the piston projection in TDC on all pistons. Depending on the piston projection, install the corresponding cylinder head gasket according to the following table.





• To measure the piston position at TDC, turn the engine in clockwise direction.

• If varying values occur when measuring the projection, use the gasket for the largest value.





Cylinder Head Seal Identification





• Replacement part No. = - arrow 1 -

• Control code = - arrow 2 - (ignore this!)

• Holes = - arrow 3 -

• Installation position: The identification faces upward.

• Depending on piston projection, varying cylinder head gasket thicknesses can be installed. When replacing the seal, install a new seal with the same identification - arrow 3 -.