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

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, 2001 BMW X5, and 2000 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

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

Plain compression ring
Stepped taper-face ring "TOP"
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

Courtesy of BMW OF NORTH AMERICA, INC.

End float,

refer to ENGINE - TECHNICAL DATA - X5

Fig 2: Measuring End Float

Courtesy of BMW OF NORTH AMERICA, INC.

Gap in cylinder,

refer to ENGINE - TECHNICAL DATA - X5

Fig 3: Measuring Gap In Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.