11 25 671 Replacing piston rings on all pistons (M62): Installation

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

1. Plain compression ring
2. Stepped taper-face ring "TOP"
3. Three-piece steel band ring

Arrange piston ring contact points with offset of approx. 120° to one another, but not over piston pin eye.

Fig 1: Inserting Piston Rings

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End float,

refer to ENGINE - TECHNICAL DATA - X5

Fig 2: Measuring End Float

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Gap in cylinder,

refer to ENGINE - TECHNICAL DATA - X5

Fig 3: Measuring Gap In Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.