🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E21 Model Year: 1979 Codes Product Code Approximation: BMW-E21-1979-SRW 👋 Introduction Market Position Target Audience: BMW owners with basic mechanical skills and independent auto service professionals Value Proposition: Saves money on repairs, empowers owners to understand their vehicle, and provides dealer-level repair information Competitive Analysis Uniqueness: Vehicle-specific, not generic; identical to dealer-used manuals Key Features Content Accuracy: Accurate, clear, and concise text with illustrations Completeness Assurance: Guaranteed complete and intact, without missing or corrupt parts Download Speed: Speed Download 📋 Manual Details Coverage Areas Covered Years: Primarily 1979, likely includes late 1970s E21 variants Engine Coverage: All major engine variants offered in 1979 E21 models Transmission Coverage: Manual and Automatic Transaxle Systems Page Count Estimated Page Count: Comprehensive (Specific count not provided, but described as full service and repair instruction) Manual Type Type: Service Repair Workshop Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine mechanical system repairs, diagnostics, and rebuilds Engine Electrical: Detailed engine electrical system troubleshooting and repair, including wiring schematics Emission Control: Emission control system diagnosis and repair procedures Fuel System: Fuel system components, diagnosis, and repair, likely including injection and carburetor systems Clutch System: Clutch system service, adjustment, and replacement Transmission Manual: Manual transaxle system repair, overhaul, and adjustment Transmission Automatic: Automatic transaxle system repair, overhaul, and adjustment Driveshaft Axle: Driveshaft and axle assembly maintenance and repair Suspension: Complete suspension system diagnosis, repair, and alignment specifications Steering: Steering system maintenance, repair, and troubleshooting Restraint Systems: Restraint system details (e.g., seat belts, likely pre-airbag era) Brake System: Comprehensive brake system service, repair, and component specifications Body Interior Exterior: Bodywork repair, interior trim, and exterior component service Body Electrical: Body electrical system diagnostics and repair HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system service and repair Procedures Included Maintenance: Step-by-step instructions for all scheduled maintenance tasks Troubleshooting: Extensive troubleshooting guides for various vehicle issues Repair: Detailed repair procedures for virtually all mechanical and electrical components Diagnostics: Diagnostic procedures for identifying and resolving problems Technical Depth Level Of Detail: Mechanic-level detail, including specifications and procedures equivalent to authorized dealer service departments Visual Aids: Includes diagrams, illustrations, and wiring schematics 📊 Manual Specifications File Format Compatibility: All Versions of Windows and Mac Reader Requirement: Adobe PDF Reader Print Quality Printability: Yes, all pages are printable Print Benefit: Print individual pages to avoid damage to the original manual Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Family: BMW M10 (various displacements) Performance Horsepower Range Approximation: 70-125 hp (depending on specific engine variant) Torque Range Approximation: 90-130 lb-ft (depending on specific engine variant) Fuel System Injection Options: Bosch L-Jetronic (likely for most 1979 models), possibly Solex carburetors on some variants Engine Variants Covered Engine Codes: Likely includes M10 variants such as M10B18, M10B20, M10B23 (engine codes like 1.8L, 2.0L, 2.3L) 🔧 Transmission Standard Manual Transmission: 4-speed and 5-speed manual transmissions (e.g., Getrag) Optional Automatic Transmission: 3-speed automatic transmission (e.g., ZF) Features Manual Fluid Spec: Likely SAE 75W-90 or SAE 80W-90 gear oil (specifics in manual) Automatic Fluid Spec: Likely Dexron-III or equivalent ATF (specifics in manual) 📐 Dimensions Exterior Body Style: 2-door sedan (coupe), 4-door sedan Wheelbase: Approximately 2563 mm (100.9 inches) Weights Curb Weight Range: Approximately 1100-1250 kg (2425-2755 lbs) 🛡️ Safety Features Ratings Crash Test Era: Pre-modern crash testing standards; emphasis on passive safety like crumple zones and seatbelts Passive Features Seatbelts: Standard three-point front seatbelts, likely lap belts in rear Structure: Reinforced passenger cell, crumple zones 💡 Technology Features Infotainment Audio System: Basic AM/FM radio, optional cassette player (dealer installed) Driver Assistance Advanced Features: None (pre-date modern driver assistance systems) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles or 6-12 months (refer to manual for exact specification) Tune Up Interval: Spark plugs, air filter, fuel filter typically every 15,000-30,000 miles (refer to manual) Fluid Specifications Engine Oil Type: Likely SAE 20W-50 or 10W-40, API SF or SG (specifics in manual) Coolant Type: Ethylene glycol based coolant, typically 50/50 mix with distilled water (specifics in manual) Brake Fluid Type: DOT 3 or DOT 4 brake fluid (specifics in manual) Known Issues Rust Prone Areas: Wheel arches, rocker panels, rear spring perches, front strut towers Common Engine Wear: Timing chain wear, oil leaks from seals and gaskets, carburetor/fuel injection issues Suspension Wear: Worn control arm bushings, ball joints, shock absorbers Common Repairs Covered By Manual Basic Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-ups Intermediate Repairs: Brake pad/rotor replacement, clutch adjustment/replacement, exhaust system repair, starter/alternator replacement Advanced Repairs: Engine overhaul, transmission rebuild, suspension overhaul, fuel injection system diagnosis and repair 📚 Vehicle History Brand Heritage Bmw Philosophy: Focus on 'The Ultimate...