🏷️ Basic Information Identification Make: BMW Model: 528i Year: 1981 Codes Chassis Code: E28 👋 Introduction Market Position Positioning: The BMW 528i (E28) represented the pinnacle of BMW's mid-size luxury sedan offerings in the early 1980s, emphasizing performance, comfort, and build quality. It was positioned as a premium executive sedan with sporting credentials. Competitive Analysis Competitors: Competed against vehicles like the Mercedes-Benz W123/W124 series, Audi 100, Volvo 740/760, and American luxury sedans such as Cadillac Sedan de Ville and Lincoln Continental. Key Features Vehicle Highlights: Renowned for its robust M30 engine, refined handling, sophisticated interior, and excellent build quality. The E28 generation marked a significant evolution in BMW's design language. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Diagnostics, Troubleshooting Secondary Coverage: Wiring Diagrams, Specifications, Procedures Page Count Estimated Pages: 900+ Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: Print (likely digital scan of original printed manual) 📖 Manual Coverage Systems Covered Engine: M30B28 inline-six engine (engine management, fuel injection, ignition, cooling, lubrication, exhaust) Transmission: Getrag 260 5-speed manual, ZF 4HP22 4-speed automatic (operation, removal, installation, overhaul, fluid specifications) Drivetrain: Rear-wheel drive system, driveshaft, differential, axles Suspension: Front MacPherson struts, rear semi-trailing arms, springs, shock absorbers, bushings, alignment specifications Brakes: Front ventilated discs, rear solid discs, hydraulic system, ABS (if equipped), parking brake Steering: Power-assisted recirculating ball steering system Electrical: 12V system, battery, alternator, starter, lighting, dashboard instrumentation, L-Jetronic fuel injection control unit, ignition system, fuses, relays, wiring diagrams Body And Chassis: Body construction, doors, windows, glass, body panels, interior trim, sound deadening Heating And Air Conditioning: HVAC system operation and repair Procedures Included Engine Overhaul: Complete engine rebuild procedures, including cylinder head, block, crankshaft, camshaft, pistons, rings, bearings Fuel System Service: Fuel pump testing and replacement, fuel injector cleaning and replacement, fuel pressure regulation Ignition System Diagnosis: Spark plug replacement, ignition coil testing, distributor maintenance Brake System Maintenance: Brake pad and rotor replacement, brake fluid flush, caliper and master cylinder overhaul Suspension Component Replacement: Strut and shock absorber replacement, control arm bushing replacement, ball joint inspection Transmission Fluid Change: Procedure for changing transmission fluid and filter Troubleshooting: Systematic diagnostic procedures for common issues, fault codes (if applicable) Technical Depth Depth: Comprehensive: Covers routine maintenance to complete engine and transmission overhauls, detailed electrical diagnostics, and bodywork repairs. Diagnostic Capability: Advanced: Includes specifications for testing sensors, actuators, and engine control units, along with troubleshooting flowcharts. 📊 Manual Specifications File Format Digital Format: Likely PDF, potentially image-based scans or searchable text. Print Quality Quality: Variable (depends on original printing and scanning quality, expect clarity for diagrams and text). Binding Type Binding: N/A (for printed version, typically perfect bound or spiral) Paper Type Paper: N/A (for printed version, typically durable paper stock suitable for workshop use) ⚙️ Engine Specifications Primary Engine Engine Code And Type: M30B28, 2.8-liter (2788 cc) SOHC inline-six Performance Horsepower: 181 hp (135 kW) @ 5800 rpm (approximate, may vary by market/emission standards) Torque: 230 Nm (170 lb-ft) @ 4000 rpm (approximate) Fuel System Fuel Injection: Bosch L-Jetronic (or Motronic, depending on exact market/year evolution) fuel injection Engine Components Bore X Stroke: 86 mm x 80 mm Compression Ratio: 8.0:1 or 8.1:1 Cooling System Cooling Type: Liquid-cooled Lubrication System Oil Capacity: 6.5 liters (6.9 US quarts) 🔧 Transmission Standard Transmission Type: Getrag 260 5-speed manual Optional Transmission Type: ZF 4HP22 4-speed automatic Features Gear Ratios Manual: Refer to manual for specific ratios; typically close-ratio Fluid Type Manual: BMW MTF LT-2 or equivalent (GL-4 spec) Fluid Type Automatic: Dexron II or equivalent 📐 Dimensions Exterior Length: 4700 mm (185.0 in) Width: 1700 mm (66.9 in) Height: 1420 mm (55.9 in) Weights Curb Weight: 1450-1500 kg (3197-3307 lbs) Wheelbase: 2700 mm (106.3 in) Track Width Front: 1450 mm (57.1 in) Track Width Rear: 1460 mm (57.5 in) 🛡️ Safety Features Ratings Crash Testing Era: Safety standards of the early 1980s; extensive independent crash testing data may be limited. Active Features ABS: Optional Anti-lock Braking System (ABS) available on some models. Passive Features Seatbelts: Three-point inertia-reel seatbelts Crumple Zones: Designed with energy-absorbing crumple zones Steering Column: Collapsible steering column 💡 Technology Features Infotainment Audio System: Factory-installed analog radio, cassette player, and speaker systems. Instrument Cluster: Analog gauges for speedometer, tachometer, fuel level, engine temperature, oil pressure; warning lights for various systems. Driver Assistance ABS: Optional ABS system Connectivity Original Connectivity: Limited to basic vehicle functions; no modern digital connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, consult manual for specifics. Spark Plug Replacement: Approx. 30,000 miles (48,000 km) Timing Belt Chain: M30 engines use a timing chain, which is designed to last the life of the engine but requires periodic inspection for tensioner wear. Fluid Specifications Engine Oil Spec: API SG or SH, SAE 10W-40 or 20W-50 recommended (check...