11 31 090 Removing and installing/replacing chain tensioning piston (M52 / M52TU / M54 / M56)

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

Important!

Spring pressure!

Unfasten cylinder for chain tensioning piston.

Installation:

Replace sealing ring.

Tightening torque, refer to 11 31 8AZ in ENGINE - TIGHTENING TORQUES .

Fig 1: Removing Cylinder For Chain Tensioning Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of components:

Cylinder for chain tensioning piston.
Sealing ring.
Spring.
Piston.

Fig 2: Exploded View Of Cylinder For Chain Tensioning Piston
Courtesy of BMW OF NORTH AMERICA, INC.