This comprehensive Factory Service Repair Manual offers a complete guide to maintaining and repairing your BMW 3 Series E21, covering model years 1975 to 1984. Designed for both experienced mechanics and DIY enthusiasts, this manual provides detailed instructions, illustrations, and specifications to help you perform a wide range of services, from routine maintenance to complex repairs. The manual includes detailed information on all aspects of your BMW 3 Series E21, including: * **General Maintenance:** Covers routine maintenance procedures like oil changes, fluid checks, and filter replacements. * **Troubleshooting:** Provides comprehensive guides to diagnose and resolve various issues you might encounter with your vehicle. * **Engine Service and Repair:** Explains how to service and repair your engine, including procedures for rebuilding, tuning, and troubleshooting common engine problems. * **Transmission Service and Repair:** Offers detailed instructions on maintaining and repairing your transmission, covering both manual and automatic transmissions. * **Brake System:** Provides step-by-step instructions for servicing and repairing your brake system, from pad replacement to master cylinder overhaul. * **Electrical System:** Covers the complete electrical system of your BMW 3 Series E21, including detailed wiring diagrams, troubleshooting guides, and repair procedures for components like the alternator, starter, and electrical accessories. * **Suspension:** Provides comprehensive information on maintaining and repairing your suspension system, including shock absorber replacement, spring replacement, and alignment procedures. * **Periodic Lubrication:** Details the recommended lubrication points for your vehicle and how to properly lubricate them. * **Steering:** Explains how to service and repair your steering system, including power steering components and steering wheel adjustments. * **Cooling System:** Guides you through cooling system maintenance and repair, including radiator replacement, coolant flush, and thermostat replacement. * **Fuel Injection and Fuel System:** Offers detailed instructions on servicing and repairing your fuel injection system, including troubleshooting guides for common fuel system issues. * **Emission System:** Covers the maintenance and repair of your vehicle's emission control system, ensuring compliance with environmental regulations. * **Heater and Air Conditioning:** Explains the operation and maintenance of your heating and air conditioning system, providing guidance on diagnosing and resolving common issues. * **Engine Control System:** Provides information on the electronic engine control system, covering diagnostics, troubleshooting, and repair procedures. * **Chassis and Body:** Covers the structure and repair of your vehicle's chassis and body, including rust repair, bodywork, and structural reinforcement. * **Restraint System:** Offers detailed information on the safety features of your vehicle, including seat belts and airbags. * **Interior:** Provides instructions on maintaining and repairing the interior components, including upholstery, trim pieces, and electrical accessories. * **Differential and Drive:** Covers the differential and drivetrain system, including servicing procedures, repairs, and troubleshooting. * **Axle:** Details the axle components, providing instructions on maintenance, repair, and replacement procedures. This Factory Service Repair Manual provides everything you need to keep your BMW 3 Series E21 running smoothly and efficiently. With its comprehensive coverage and detailed instructions, you can confidently tackle a wide range of maintenance and repair tasks, saving you time and money.

The BMW 3 Series E21, produced from 1975 to 1984, marked the beginning of the iconic 3 Series lineage. This first generation, often referred to simply as the "E21," was a pivotal model for BMW, transitioning the brand from its primarily sporty and luxurious image to one that also embraced practicality and affordability. The E21 was built on a new platform specifically designed for the compact segment, featuring a lightweight and rigid body constructed from steel, with a front engine and rear-wheel drive configuration. This combination allowed for a nimble and engaging driving experience, a hallmark of the 3 Series to this day. The E21 was available with a range of four-cylinder engines, ranging from the economical 1.6-liter to the potent 2.3-liter unit, all paired with either a four- or five-speed manual transmission. Its design was clean and elegant, with a purposeful and sporty stance, characterized by a sloping hood, a low roofline, and a distinctive Hofmeister kink at the rear window. The E21's success stemmed from its ability to blend performance with practicality, offering a compelling package for drivers seeking a sporty car that didn't compromise on everyday usability. It was praised for its sharp handling, responsive steering, and well-balanced chassis, characteristics that cemented the 3 Series' reputation as a driver's car. The E21 was available in various body styles, including the popular two-door sedan, and the less common coupé and touring variants. While its interior was spartan by today's standards, it offered a simple and functional layout prioritizing driving enjoyment. Despite its age, the E21 remains a coveted classic today, with enthusiasts appreciating its timeless design, engaging driving dynamics, and historical significance in the evolution of the 3 Series. The Factory Service Repair Manual for this iconic vehicle serves as an invaluable resource for owners and mechanics, providing detailed information and instructions for maintaining and repairing these cherished automobiles.