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Home >> BMW >> 2003 >> X5 30i, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (Engine - Repair Instructions - X5 (4.6L)) >> Piston With Rings >> 11 25 671 Replacing piston rings on all pistons (M62) >> Installation

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

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

Fig 1: Identifying Piston Ring Installed Positions
G03254635Courtesy of BMW OF NORTH AMERICA, INC.

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

End float,

refer to PISTONS WITH RINGS AND PINS in Technical Data.

Fig 2: Measuring Ring End Float
G03254636Courtesy of BMW OF NORTH AMERICA, INC.

Gap in cylinder,

refer to PISTONS WITH RINGS AND PINS in Technical Data.

Fig 3: Measuring Ring End Gap In Cylinder
G03254637Courtesy of BMW OF NORTH AMERICA, INC.