Caution! Do not apply excessive amounts of grease, as this will subsequently splash onto the friction surfaces of the driven disk, causing poor clutch performance. The amount of grease applied to the splines can be compared in volume to a corn grain.
Caution! In engines with a composite flywheel, the splines of the driven disk are nickel-plated and therefore the splines of the gearbox input shaft must not be lubricated. The driven clutch disk in an engine with such a flywheel can be identified by the absence of damping springs.
13. Center the position of the driven disk using a suitable punch or drift, such as HAZET2174. If the driven disk is not installed in the center of the pressure plate, it will be impossible to start and install the input shaft of the gearbox later (see illustration).
14. Install the pressure plate together with the centered driven plate onto the corresponding mounting pins on the flywheel.
15. Insert the pressure plate mounting bolts and tighten them by hand, then turn them in crisscross pattern in 1-1 turn increments until the pressure plate mounting bolts are tightened to the required torque. The tightening torque of the pressure plate bolts is 25 Nm.
Caution! The pressure plate must be pulled evenly toward the flywheel when tightening the bolts.
16. Remove the centering punch or roller and remove the shoe that holds the flywheel from turning.
(Article borrowed from the web portal: «MercedesMan»)
17. Install the gearbox (see the relevant chapter).