Skoda Workshop Service and Repair Manuals > Octavia Mk2 > Power unit | 2.0/81; 103; 125 kW TDI CR Engine (2nd generation) | Enginecrankshaft group, pistons | Crankshaft, Piston and Conrod

Checking piston projection in TDC

Special tools and workshop equipment required

t	Measuring tool for liner pretension -MP1-107-

Test sequence

–	Position the measuring tool for liner pretension -MP1-107- at the piston as shown in the illustration.

–	Measure the projection for each piston at 2 points crosswise opposite the cylinder block.

When fitting new pistons or a partial engine, check the piston projection in TDC on all pistons.

If different values are measured during the projection measurement of the piston, the greatest dimension applies for the seal assignment.

Depending on the piston projection fit the relevant cylinder head seal in accordance with the table below.

Piston projection over cylinder block top side mm	Marking number of bores
0,91 … 1,00	1
1,01 … 1,10	2
1,11 … 1,20	3

Identification of the cylinder head gasket

t	Part number -arrow 1-

t	Bores -arrow 2-

t	Notches -arrow 3- (ignore)

Note

If different values are measured during the projection measurement of the piston, the greatest dimension applies for the seal assignment.

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