This manual covers the BMW 5-Series, specifically the E34 chassis code, model variant 520i, produced between 1988 and 1991. The E34 generation represented a significant evolution for BMW's executive sedan, building on the brand's legacy of engineering excellence and the promise of 'The Ultimate Driving Machine'. Known for its sophisticated styling, driver-focused cockpit, and balanced handling, the 520i, powered by the M20B20 inline 6-cylinder engine, offered a refined driving experience. This model marked a transition towards more aerodynamic designs and increased electronic integration compared to its predecessors, positioning it as a strong competitor in the executive sedan segment of its era.

This comprehensive workshop service and repair manual is designed for both professional technicians and enthusiast DIYers. It provides detailed guidance on all aspects of maintaining and repairing the BMW 520i E34. Coverage includes routine maintenance, complete engine overhaul procedures for the M20B20 engine, transmission repair for both manual and automatic options, chassis and suspension systems, braking systems, and the electrical system, including wiring diagrams. Additionally, the manual offers troubleshooting guides, diagnostic procedures for OBD-I systems, and information on bodywork and interior systems, ensuring owners and mechanics have the necessary knowledge to keep this vehicle in optimal condition.