🏷️ Basic Information Identification Make: BMW Model: 5 Series Model Code: E28 Model Years Covered: 1981-1988 Codes Engine Codes Covered: M30B30, M30B32, M30B35, M21D24 👋 Introduction Market Position Segment: Executive Sedan, Luxury Sports Sedan Historical Significance: The E28 represented a significant evolution of BMW's 5 Series, solidifying its reputation for driving dynamics, build quality, and sophisticated engineering. It was a benchmark in its class during its production run. Competitive Analysis Competitors: Mercedes-Benz W123/W124, Audi 100, Jaguar XJ6, Volvo 240/740 series. Key Features Design: Chris Bangle's influence was beginning to be felt, but the E28 retained classic BMW styling with sharp lines, a prominent grille, and a driver-focused interior. Known for its robust build and enduring appeal. Driving Dynamics: Renowned for its balanced chassis, precise steering, and engaging driving experience, characteristic of the 'Ultimate Driving Machine' ethos. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Manual Language: English Manual Format: HTML Download Coverage Scope: Comprehensive repair and maintenance for all E28 models within the specified years. 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, and overhaul procedures for M30 (3.0L, 3.2L, 3.5L) inline-six gasoline engines and M21 (2.4L) inline-six turbodiesel engine, including fuel injection (Bosch L-Jetronic, Motronic), ignition systems, cooling, lubrication, and emissions. Transmission: Repair and overhaul for Getrag 260, Getrag 265/6 5-speed manual transmissions, and ZF 3 HP-22, 4 HP-22 3 and 4-speed automatic transmissions, including clutch, driveshaft, differential, and axle components. Chassis: Front and rear suspension (MacPherson struts, semi-trailing arms), steering systems (power steering), brake systems (ABS, disc/drum configurations), and wheel/tire specifications. Electrical: Complete wiring diagrams, diagnostic procedures for lighting, instruments, engine management, comfort features, and accessory systems. Body: Body panel repair, interior trim removal and installation, door mechanisms, glass replacement, and climate control system servicing. Procedures Included Maintenance: Regular maintenance tasks such as oil changes, filter replacements, spark plug servicing, brake fluid changes, coolant flushes, and accessory belt inspections. Troubleshooting: Systematic diagnostic charts and symptom-based troubleshooting guides for common and complex issues. Repair: Step-by-step instructions for component removal, disassembly, repair, reassembly, and installation. Rebuilds: Detailed procedures for engine and transmission rebuilding, including critical tolerances and specifications. Technical Depth Depth: Expert level. Covers everything from basic preventative maintenance to complete engine and transmission overhauls, including advanced diagnostics and specialized procedures. 📊 Manual Specifications File Format Format: HTML Accessibility: Downloadable, searchable text within HTML pages. Print Quality Printability: HTML format allows for selective printing of pages or sections as needed. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Variant 1: 528e (M30B27 'Eta' engine) 528E Displacement: 2.7 Liters (2693 cc) 528E Horsepower: 121 hp @ 4800 rpm (approx.) 528E Torque: 170 lb-ft @ 3250 rpm (approx.) Engine Variant 2: 533i (M30B32 engine) 533I Displacement: 3.2 Liters (3210 cc) 533I Horsepower: 182 hp @ 5500 rpm (approx.) 533I Torque: 203 lb-ft @ 4000 rpm (approx.) Engine Variant 3: 535i (M30B35 engine) 535I Displacement: 3.4 Liters (3430 cc) 535I Horsepower: 182-211 hp @ 5700 rpm (depending on market and spec, approx.) 535I Torque: 220-235 lb-ft @ 4000 rpm (depending on market and spec, approx.) Engine Variant 4: 524td (M21D24 turbodiesel engine) 524Td Displacement: 2.4 Liters (2443 cc) 524Td Horsepower: 115 hp @ 4800 rpm (approx.) 524Td Torque: 184 lb-ft @ 2400 rpm (approx.) Fuel System Gasoline Injection Systems: Bosch K-Jetronic (early models), Bosch L-Jetronic, and Bosch Motronic EFI systems across different engine variants and years. Diesel Injection System: Bosch VE injection pump for the 524td. 🔧 Transmission Standard Manual Transmission 1: Getrag 260 (5-speed manual) Manual Transmission 2: Getrag 265/6 (5-speed manual, often found in M-Sport or higher performance variants) Optional Automatic Transmission 1: ZF 3 HP-22 (3-speed automatic) Automatic Transmission 2: ZF 4 HP-22 (4-speed automatic, introduced later in the E28 lifecycle) Features Clutch Type: Hydraulically actuated single dry plate clutch. Driveshaft: One-piece or two-piece driveshaft with universal joints and center bearing support. Differential: Limited-slip differential (LSD) often available as an option or standard on performance models. 📐 Dimensions Exterior Length: 4750-4780 mm (approx.) Width: 1700 mm (approx.) Height: 1410-1420 mm (approx.) Wheelbase Wheelbase: 2790 mm (approx.) Weights Curb Weight: 1400-1600 kg (depending on engine and equipment, approx.) 🛡️ Safety Features Ratings Safety Standards: Designed to meet safety standards of the 1980s. Lacked modern electronic safety aids found in contemporary vehicles. Active Features ABS: Anti-lock Braking System (ABS) available on most models from the mid-1980s onwards. Passive Features Seatbelts: Three-point inertia-reel seatbelts, with optional rear seatbelts. Body Structure: Reinforced passenger cell with crumple zones front and rear for energy absorption. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM radio with cassette player, often with optional premium sound systems and amplifiers. Aftermarket head units are common upgrades. Driver Assistance Cruise Control: Electronic cruise control system available on most models. Climate Control: Manual or optional automatic climate control...