Cylinder Block Assembly: Testing and Inspection

Piston Projection in TDC, Checking

=> [ Cylinder Head Gasket Identification ]

Special tools, testers and auxiliary items required

• Measuring Bar (VW 382/7)

• Magnetic Plate 50 mm Dia. (VW 385/17)

• Dial Gauge (0-10 mm) (VAS 6079)

Test Sequence






When installing new pistons or working on a partial engine, check the piston projection in Top Dead Center (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, rotate the engine clockwise.

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






Cylinder Head Gasket Identification






• Part number = - arrow 1 -

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

• Holes = - arrow 3 -

• Installed position: the mark faces up.

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