Clutch - Repair: Description

A specially developed Dual-Mass Flywheel (ZMS) is used with the H-gearbox. Because the 6-speed manual transmission has more gears, the flywheel is modified to compensate for vibration and noise. In this flywheel, the 2 masses are connected via inner and outer dampers (rubber like damping material). The masses are now supported by a plain bearing (no longer in a ball bearing). The plain bearing requires less space and enables an additional inner damper to be used. The transmission input shaft is supported through the flywheel in a needle bushing with a roller pilot bearing. The flywheel is connected to the crankshaft flange with Torx socket bolts. Beginning 3/2003, BMW introduced new heavy metal-free friction linings which satisfy the requirements of used car regulations.