Align marks (arrows) on timing pinion and chain sprocket.
Remove banjo bolt of cooling oil pipe (1) and swing the pipe forwards.
Remove chain tensioner (2).
Remove chain tensioning rail (3).
Remove chain guide rail (4).
Install locking device, BMW # 11 5 640, to lock clutch housing.
Remove chain sprocket retaining screw (5).
Remove sprocket (6) and timing chain (7).
If necessary, remove chain sprocket (8).
