🏷️ Basic Information Identification Make: BMW Model: 5 Series Chassis Code: E28 Specific Model Variant: 518 / 518i Codes Engine Code Primary: M10B18 (carbureted and injected variants) 👋 Introduction Market Position Market Segment: Executive Sedan Competitive Analysis Key Competitors: Mercedes-Benz W124, Audi 100, Jaguar XJ, Volvo 240/740, Cadillac Sedan de Ville. Key Features Vehicle Design Philosophy: German engineering, focus on driver engagement, build quality, and sophisticated (for its era) technology. Key Features Manual Target Audience: Mechanical technicians and advanced DIY enthusiasts tasked with maintaining and repairing the BMW E28 518/518i. 📋 Manual Details Coverage Areas Model Years Covered: 1985, 1986, 1987, 1988 Page Count Page Count: 227 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Full overhaul, diagnosis, timing, valve train, cooling system, lubrication system, fuel system (carburetor and Bosch L-Jetronic/Motronic for 'i' models). Engine Electrical: Ignition system, starting and charging system, fuel injection control (ECU diagnostics), emission control systems. Transmission Manual: Clutch system, gearbox overhaul, shifting mechanisms, driveshafts, differential maintenance. Transmission Automatic: Automatic transmission servicing (ZF 4HP22 for some variants), hydraulic control, cooler system. Suspension: Front and rear suspension geometry, shock absorbers, springs, control arms, bushings, sway bars, alignment procedures. Steering: Power steering system diagnosis and repair, steering rack, tie rods, steering column. Brakes: Front and rear disc brake systems (vented front), hydraulic system, ABS (Anti-lock Braking System) diagnosis and repair for equipped models, parking brake. Electrical System: Complete wiring diagrams, lighting systems (headlights, taillights, interior), instrumentation, central locking, power windows, mirrors, fuse box layout, relay functions. Fuel System: Fuel tank, fuel pump, fuel lines, fuel filter replacement, carburetor adjustment (518), fuel injection components (518i). Exhaust System: Exhaust manifold, catalytic converter (if applicable), muffler, exhaust hangers, lambda sensor (518i). Body And Chassis: Body panel removal and installation, door mechanisms, hood, trunk, interior trim, rust prevention and repair, chassis lubrication. Heating And Air Conditioning: HVAC system operation, component testing, refrigerant handling, blower motor, heater core, A/C compressor. Procedures Included Routine Maintenance: Oil and filter change, air filter replacement, spark plug replacement, coolant flush, brake fluid replacement, drive belt inspection and replacement. Troubleshooting Guides: Diagnostic flowcharts for common starting, running, electrical, and braking issues. Major Repair Procedures: Engine rebuild, head gasket replacement, transmission overhaul, suspension component replacement, brake caliper overhaul. Electrical Diagnostics: Component testing using multimeters, voltage drop testing, wiring harness repair, fuse and relay testing. Specification Tables: Torque specifications for critical fasteners, engine data, fluid capacities, valve clearances, ignition timing settings. Technical Depth Depth Level: Comprehensive from basic owner maintenance to advanced mechanical and electrical system repairs, suitable for professional technicians and experienced DIYers. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High resolution, suitable for printing all pages. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Searchability Searchability: Likely text-searchable if OCR'd, allowing quick access to specific topics. ⚙️ Engine Specifications Primary Engine Engine Code: M10B18 Engine Type: Inline-4 Cylinder, SOHC Displacement Cc: 1766 Bore Mm: 89.0 Stroke Mm: 71.0 Performance Horsepower Ps 518: 90 Torque Nm 518: 140 Horsepower Ps 518I: 105 Torque Nm 518I: 150 Fuel System Fuel System 518: Solex or Pierburg Carburetor Fuel System 518I: Bosch L-Jetronic or Motronic Fuel Injection Fuel Type Fuel Type: Unleaded Gasoline (RON 91 or higher) Engine Management Engine Management 518I: ECU controlled ignition and fuel injection 🔧 Transmission Standard Standard Transmission: 4-speed Manual Optional Optional Transmission: 3-speed or 4-speed Automatic (ZF) Features Clutch Type: Hydraulically operated single dry plate clutch Final Drive: BMW 'Large' Differential, various ratios available. 📐 Dimensions Exterior Length Mm: 4620 Width Mm: 1700 Height Mm: 1410 Wheelbase Mm: 2795 Weights Curb Weight Kg Approx: 1290 Gross Vehicle Weight Kg Approx: 1800 🛡️ Safety Features Ratings Safety Ratings Era: Standard safety features for the mid-1980s; not subject to modern rigorous testing protocols. Active Features Active Safety Features: Four-wheel disc brakes, optional ABS on later models. Passive Features Passive Safety Features: Reinforced safety cage, crumple zones, padded interior, seat belts (likely 3-point front, 2-point rear). 💡 Technology Features Infotainment Infotainment Features: Basic AM/FM radio and cassette player, often with optional premium sound system. Driver Assistance Driver Assistance Features: Optional ABS (Anti-lock Braking System) on later models. Connectivity Connectivity Features: Not applicable by modern standards. Primarily focused on mechanical and electrical systems. 🔧 Maintenance Service Intervals Oil Change Interval Km: Typically 7,500 - 10,000 km or annually, whichever comes first (refer to specific manual recommendations). Spark Plug Replacement Km: Approx. 20,000 - 30,000 km (depending on plug type). Coolant Flush Interval Km: Every 2-3 years or approx. 40,000 km. Transmission Fluid Change Auto Km: Recommended every 50,000 - 80,000 km, though some sources suggest sealed for life; manual check is key. Fluid Specifications Engine Oil Viscosity: 10W-40 or 15W-40 API SG or higher (check manual...