11 31 052 Replacing Both Timing Chains (N62/N62TU)

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 750i, 2008 BMW 750Li, and 2008 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks:

Remove lower TIMING CASE COVER

Remove timing chain (1).

Remove timing chain (5).

Release screws (7).

Remove guide rails (3 and 6).

Remove tensioning rails (2 and 4).

Installation:

Maintain tension of timing chains when installing timing case cover.

Observe sparking protection on timing case cover.

Make sure timing chain (1) is correctly installed when placing it in guide rail (3).

Fig 1: Identifying Timing Chain And Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Attach special tools 11 2 001 and 11 2 002 to crankshaft.

Insert special tool 11 2 007 and remove sprocket wheel with special tool 11 2 003.

Installation:

Check sprocket wheels for wear, replace if necessary.

Heat sprocket wheel to 60 °C.

WARNING:

Burning hazard! Wear gloves.

Fig 2: Identifying Special Tools For Crankshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.