11 25 671 Replacing piston rings on all pistons (S62 / S54): Installation:

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Insert piston rings with the word "TOP" facing piston crown.

Fig 1: Identifying Piston Rings

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Offset the contact points of the piston rings by approx. 120° to each other but do not position above the piston pin boss.

Measure axial play.

Axial clearance, refer to 11 25 PISTONS WITH RINGS AND PINS S54 .

Fig 2: Measuring Axial Play

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Measure end clearance.

End clearance, refer to 11 25 PISTONS WITH RINGS AND PINS S54 .

Fig 3: Measuring End Clearance

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