SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder injection engine (1.6l 4V, Chain control) | Enginecrankshaft group, pistons | Piston and piston rod:

Checking pistons

Special tools and workshop equipment required

t	Outer micrometer 75 - 100 mm

Checking pistons

–	Measure approx. 12 mm from the lower edge, at an angle of 90° to the axis of the piston pin. Difference in relation to max. specified measurement 0.04 mm. Nominal measurement → Chapter.

Check the piston ring gap

–	Insert ring at right angles from above into lower cylinder opening approx. 15 mm from edge of cylinder.

¹⁾	It is not possible to give an indication of the wear limit

Checking play between the rings and grooves

Before checking, clean the groove of the rings.

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