🏷️ Basic Information Identification Make: BMW Model: 5-series Chassis Code: E28 Model Year: 1985 Market Segment: Executive Sedan 👋 Introduction Market Position Positioning: The E28 5-series represented BMW's commitment to sporting luxury and driving dynamics in the executive sedan segment, directly competing with Mercedes-Benz E-Class and Audi 100/200. Competitive Analysis Competitors: Mercedes-Benz W124 (E-Class), Audi Type 44 (100/200), Volvo 700 Series, Jaguar XJ Key Features Driving Dynamics: Renowned for its balanced chassis, precise steering, and rear-wheel-drive bias, offering a superior driving experience compared to many contemporaries. Build Quality: Exemplified BMW's reputation for robust engineering and high-quality materials, leading to excellent longevity when properly maintained. Manual Utility Value Proposition: Provides the exact technical information needed to maintain, diagnose, and repair the BMW E28, empowering owners and independent specialists with dealership-level knowledge. 📋 Manual Details Coverage Areas Comprehensive Coverage: All Models & All Repairs A-Z Page Count Estimated Page Count: Over 800 pages (typical for comprehensive factory manuals of this era) Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Print (likely bound, possibly comb or spiral bound for ease of use in a workshop) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, assembly, disassembly, cylinder head, block, crankshaft, pistons, timing systems, valve train Engine Management: Fuel injection systems (Bosch L-Jetronic/Motronic variants), ignition systems, emission controls, engine control unit (ECU) diagnostics and repair Transmission Manual: Clutch system, gearbox overhaul, shifting mechanisms, lubrication Transmission Automatic: Automatic transmission disassembly, assembly, hydraulic control, torque converter, valve body, troubleshooting Suspension: Front and rear suspension systems, struts, shock absorbers, control arms, bushings, anti-roll bars, alignment specifications Steering: Power steering system, steering rack, tie rods, steering column, lubrication, troubleshooting Brakes: Front and rear brake systems (disc brakes), hydraulic lines, master cylinder, brake calipers, brake pads, rotors, ABS system (if equipped), parking brake Electrical System: Battery, charging system (alternator), starter motor, ignition system, lighting system, instrumentation, horn, power windows, mirrors, central locking Body And Chassis: Body panels, doors, hood, trunk, interior trim, glass, seals, chassis lubrication, rust prevention Heating Ventilation Air Conditioning: HVAC system components, blower motor, heater core, A/C compressor, refrigerant circuits, climate control panel Procedures Included Basic Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and adjustment Troubleshooting: Systematic diagnostic procedures for common and uncommon faults, symptom-based troubleshooting guides Repair Procedures: Step-by-step instructions for component removal, installation, and overhaul Rebuild Procedures: Detailed instructions for complete engine, transmission, and major component rebuilds Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems Technical Depth Depth: Factory-level diagnostic and repair information, suitable for professional technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format Digital Format Quality: N/A (Assumed Print Format) Print Quality Print Quality: High-resolution text and diagrams, designed for clarity in a workshop environment Binding Type Binding: Likely perfect bound or spiral/comb bound for durability and lay-flat usability Paper Type Paper Type: Durable, high-quality paper stock, resistant to workshop grease and oils ⚙️ Engine Specifications Primary Engine Engine Codes Covered: M30 (e.g., 528e, 533i, 535i) and M10/M20 (e.g., 524d, 525e, 528i, 535i - specific to 1985 model year variants) M30 Engine Variants: 2.8L (M30B28), 3.2L (M30B32), 3.4L (M30B34) M20 Engine Variants: 2.7L (M20B27 'Eta'), 2.5L (M20B25), 2.8L (M20B28) M10 Engine Variants: 2.4L Diesel (M21D24 - for 524d) Performance Typical Horsepower Range: 120 hp (520i) to 211 hp (M535i/535i) Typical Torque Range: 164 lb-ft (520i) to 224 lb-ft (535i) Fuel System Fuel Delivery: Bosch L-Jetronic, LE-Jetronic, or Motronic fuel injection systems depending on engine and market. Carbureted versions were less common in North America. Fuel Type: Unleaded gasoline (Octane rating specifications detailed in manual) Engine Construction Block Material: Cast Iron Cylinder Head Material: Aluminum Alloy 🔧 Transmission Standard Standard Transmission Type: 4-speed or 5-speed Getrag manual transmission Optional Optional Transmission Type: ZF 4HP22 4-speed automatic transmission Features Clutch Type: Hydraulically operated single dry plate clutch Driveshaft: Rear-wheel drive (RWD) Fluid Specifications Manual Transmission Fluid: BMW recommended gear oil specifications (e.g., GL-4 rated, viscosity grade as per manual) Automatic Transmission Fluid: Dexron-II or equivalent ATF fluid 📐 Dimensions Exterior Length: Approx. 4700-4750 mm (185-187 in) Width: Approx. 1700-1720 mm (67-67.7 in) Height: Approx. 1410-1430 mm (55.5-56.3 in) Wheelbase: Approx. 2795 mm (110 in) Weights Curb Weight: Approx. 1400-1550 kg (3086-3417 lbs) depending on engine and equipment Gross Vehicle Weight Rating: Refer to vehicle placard or manual for specific GVWR 🛡️ Safety Features Ratings Crash Test Data: As a vehicle from 1985, formal NHTSA/Euro NCAP ratings in the modern sense are not available. E28 was engineered with significant safety considerations for its era, including a safety-cell design and impact-absorbing zones. Active Features ABS: Anti-lock Braking System (ABS) was optional on some models and standard on higher trims or later production. Passive Features Seatbelts: Three-point inertia-reel seatbelts Head Restraints: Height-adjustable front and rear head restraints Steering Column: Collapsible steering column...