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 530i, 2002 BMW 530i, and 2001 BMW 530i. 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 MECHANICAL - TIGHTENING TORQUES - 530I (E39) .

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 Chain Tensioning Piston
Courtesy of BMW OF NORTH AMERICA, INC.