The Mercedes-Benz W114 and W115 series, affectionately known as the 'Stroke Eight', were produced between 1968 and 1976 and represented a significant era for the marque. These mid-size luxury vehicles, available as sedans and coupes, were lauded for their robust engineering, advanced independent suspension systems, and the exceptional durability of their gasoline and diesel engines. Offering a blend of comfort, safety features for their time, and the renowned Mercedes-Benz build quality, the 'Stroke Eight' models set a high standard in their segment, competing effectively with contemporary luxury offerings from other European manufacturers and solidifying Mercedes-Benz's reputation for creating cars built to last. This service and repair manual provides comprehensive guidance for the Mercedes-Benz W114/W115 models, covering a wide array of essential information for owners and technicians. Within its extensive pages, you will find detailed procedures for maintenance, engine and transmission overhauls, brake and suspension system repairs, and electrical diagnostics. The manual includes critical technical specifications, torque values, diagnostic charts, and clear wiring diagrams, all designed to facilitate accurate troubleshooting and repair. Its purpose is to ensure the proper upkeep and longevity of these classic Mercedes-Benz vehicles, enabling effective maintenance and restoration.