Piston: Testing and Inspection

Piston projection at TDC, checking

Special tools, testers and auxiliary items required





^ Measuring bridge VW 382/7





^ Adjustment plate VW 385/17
^ Dial gauge

Work sequence





Piston projection of all pistons at TDC must be measured when installing new pistons or a short engine. Depending upon piston projection, install the corresponding cylinder head gasket according to the table:

Note: Turn engine clockwise to measure piston projection at TDC.





Cylinder head gasket identification

Cylinder head gasket identification:

^ Part No. = - arrow 1 -
^ Production control code = - arrow 2 - (can be disregarded)
^ Holes = - arrow 3 -

Note: If different values are measured during the projection measurement, use the largest dimension for determining the gasket.