Piston Position At TDC, Checking

Special Tools And Workshop Equipment Required 

• Measuring bar VW 382/7
• Magnetic plate 50 mm dia.VW 385/17
• Dial gauge

Test Sequence 

NOTE:

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

Fig 1: Identifying Measuring Piston Projection

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

When installing new pistons or working with a partial motor, all of the pistons must be checked for piston position at TDC. Depending on the piston projection, install the corresponding cylinder head gasket according to the following table.

Fig 2: Identifying Cylinder Head Gasket Identification

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

• Replacement part No. = -arrow 1-
• Control code = -arrow 2- (ignore this!)
• Holes = -arrow 3-