11 31 090 Removing and installing/replacing chain tensioning piston (S54)
WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Strong spring force.
Have a cleaning cloth ready. A small quantity of oil will emerge after the screw connection has been released.
Make sure no oil runs onto belt drive. Remove any remnants of oil immediately with cleaning cloth.
Have a cleaning cloth ready. A small quantity of oil will emerge after the screw connection has been released.
Make sure no oil runs onto belt drive. Remove any remnants of oil immediately with cleaning cloth.
Unfasten screw connection.
Remove chain tensioning piston.
Installation:
If a chain tensioner is reused, its oil chamber must be drained.
Place chain tensioner on a level surface and compress slowly and carefully.
Repeat this procedure twice.
Installation:
Install hydraulic chain tensioner (1) in cylinder for chain tensioning piston (2).
Replace sealing ring (3).
Install and tighten down cylinder for chain tensioning piston (2).
Tightening torque, 11 31 8AZ. Refer to 11 31 CAMSHAFT .