This comprehensive service repair manual provides detailed instructions and technical specifications for the 1990-1991 BMW 5-Series (E34) 518i. You'll find everything you need to maintain and repair your vehicle, from basic maintenance procedures to complex engine and transmission repairs. The manual covers a wide range of topics, including: * **Engine:** Detailed information on the 518i's engine, including operation, specifications, maintenance, and troubleshooting procedures. * **Transmission:** In-depth coverage of the transmission system, covering operation, adjustments, repairs, and common issues. * **Electrical System:** Comprehensive diagrams and explanations for the electrical system, including wiring schematics, troubleshooting guides, and component descriptions. * **Brakes:** Detailed instructions on the brake system, covering inspection, maintenance, and repair procedures. * **Suspension and Steering:** Information on the suspension and steering systems, including maintenance, adjustment, and repair guidance. * **Bodywork:** Guidance on repairing and maintaining the body of the vehicle, including paint and bodywork techniques. * **Troubleshooting and Diagnostics:** A comprehensive section dedicated to troubleshooting common problems and diagnosing faults. With its detailed illustrations, clear language, and step-by-step instructions, this service repair manual is an invaluable resource for DIY mechanics and professional technicians alike.

The BMW 5-Series (E34) 518i, produced from 1990 to 1991, was a compact executive sedan that marked the entry point into the coveted 5-Series lineup. While the 518i might not have been the most powerful or prestigious variant in the range, it offered a compelling blend of practicality, efficiency, and the signature BMW driving experience. Under its sleek, aerodynamically sculpted hood resided a 1.8-liter naturally aspirated four-cylinder engine, capable of producing 115 horsepower and 123 lb-ft of torque. This powerplant, mated to a 5-speed manual or 4-speed automatic transmission, provided a smooth and refined driving experience, ideal for navigating city streets and cruising on open highways. The E34 chassis, known for its robust construction and precise handling, provided a solid foundation for the 518i. Its suspension, featuring MacPherson struts in front and a multi-link setup in the rear, delivered a remarkably balanced ride, striking a delicate equilibrium between comfort and sportiness. The 518i featured power steering, ventilated disc brakes on all four wheels, and a spacious interior accommodating five occupants comfortably. The interior was crafted with quality materials and featured ergonomic controls, emphasizing driver-centricity, a hallmark of BMW vehicles. While the 518i might have lacked the raw power of its more potent siblings, it offered a compelling value proposition for those seeking a luxurious and refined driving experience without breaking the bank. The 518i, in its own right, played a crucial role in the success of the E34 generation, establishing a legacy that cemented the BMW 5-Series as a benchmark in the executive sedan segment.