This is a faithful reproduction of the original Mercedes-Benz factory workshop manual supplement covering the Hydrak hydraulic-electric clutch offered in some W128 (220SE), W180 (220S), W105 (219) and rare W111 (W111.010 220b, W111.012 220Sb) Mercedes-Benz models. This is our own, high-quality reproduction. 32 pages, stapled or saddle-stitched, some illustrations in color as in original manual. Despite a concerted effort by Mercedes-Benz of North America to convert all Hydrak cars to manual transmissions in the 1960s and 1970s, many Hydrak cars remain in service, and the Hydrak system is generating interest in collector’s circles. Any owner of a Hydrak car should have this manual, as should any Mercedes-Benz service provider who wishes to support these interesting vehicles.