This comprehensive service repair manual is designed to empower you to tackle any repair on your BMW 3 Series E21, from routine maintenance to complex engine overhauls. Explore detailed sections covering every aspect of your vehicle: delve into the intricacies of engine mechanics, including lubrication, control systems, cooling, exhaust, and fuel systems. Master the transmission and transaxle, diagnosing issues with clutches and both automatic and manual transaxles. Uncover the secrets of the driveline and axle, focusing on front and rear axle diagnostics. Gain expertise in the suspension system, covering both front and rear suspension, road wheels, and tires. Dive into the steering system, gaining a thorough understanding of power steering and steering system components. Learn the intricacies of the restraint system, gaining expert knowledge on seat belts and the supplemental restraint system (SRS). Repair and maintain the body of your car, understanding locking systems, windows, roof, interior, and exterior components. Master the air conditioning system to keep your car cool and comfortable. Navigate intricate wiring diagrams and gain a deep understanding of starting and charging systems, lighting, driver information systems, wipers, washers, horn, body control systems, audio-visual, navigation, and power supply. Follow detailed instructions for routine maintenance and tune-ups, ensuring your BMW 3 Series E21 runs smoothly and reliably. This manual provides the information you need to confidently handle any repair, saving you time, money, and frustration.

The BMW 3 Series E21 Service Repair Manual is a comprehensive guide designed to assist mechanics and DIY enthusiasts in maintaining and repairing the first generation BMW 3 Series, a compact executive car produced from 1975 to 1983. This manual serves as an invaluable resource for individuals seeking accurate information and step-by-step instructions on various repair procedures. It covers a wide range of topics, including engine, transmission, suspension, brakes, electrical systems, bodywork, and more. With detailed diagrams, illustrations, and clear explanations, this manual empowers users to diagnose and address common issues, perform routine maintenance, and tackle more complex repairs with confidence.

The BMW 3 Series E21 introduced the world to the iconic "3 Series" moniker, establishing a legacy of driving enjoyment and performance that continues to this day. This first generation was renowned for its nimble handling, precise steering, and responsive engines. The E21 offered a range of engine options, including the renowned M10 four-cylinder unit, known for its durability and smooth operation. The model's compact size and balanced weight distribution made it a joy to drive on winding roads, while its spacious interior provided comfort for both driver and passengers. The E21's success paved the way for the evolution of the BMW 3 Series, solidifying its position as a benchmark in the premium compact car segment.