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

When installing new pistons or working with 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.






• Rotate the engine clockwise in order to measure the piston position at TDC.

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






Cylinder Head Gasket Identification






• - Arrow 1 - = Part number

• - Arrow 2 - = Holes

• - Arrow 3 - = Control code (ignore this!)

• Depending on the piston projection, varying cylinder head gasket thicknesses can be installed. Be sure to use a gasket having the identical identification when replacing.

• Determine the piston position in TDC when installing new pistons or engine parts. Refer to => [ Piston Projection in TDC, Checking ] Testing and Inspection.