🏷️ Basic Information Identification Make: BMW Model: 528i Year: 1981 Codes Chassis Code: E28 Engine Code: M30B28 👋 Introduction Market Position Segment: Luxury Mid-size Sedan Era: Late 1970s / Early 1980s performance luxury Competitive Analysis Key Competitors: Mercedes-Benz W123, Audi 5000, Volvo 240, Cadillac Seville Key Features Performance Orientation: Known for its strong inline-six engine and sporty handling characteristics. Build Quality: Renowned BMW build quality and driver-focused ergonomics. Longevity: Designed for durability and long-term ownership. 📋 Manual Details Coverage Areas General Coverage: Complete service, repair, and maintenance for the 1981 BMW 528i (E28 chassis). Page Count Estimated Pages: 800+ Manual Type Type: Full Service & Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, rebuild, cylinder head, block, pistons, crankshaft, camshaft, timing system, lubrication, cooling. Fuel System: Fuel injection system (Bosch L-Jetronic), fuel pump, injectors, fuel pressure regulator, fuel lines, fuel tank. Ignition System: Ignition coil, distributor, spark plugs, ignition timing, control unit. Exhaust System: Exhaust manifold, catalytic converter (if applicable for the market), muffler, pipes. Transmission Manual: Clutch operation, manual gearbox (Getrag 260), disassembly, assembly, fluid changes, common issues. Transmission Automatic: Automatic gearbox (ZF 4HP22), disassembly, assembly, fluid changes, torque converter, control systems. Drivetrain: Driveshafts, universal joints, differential, rear axle assembly, wheel bearings. Suspension Front: MacPherson struts, control arms, ball joints, sway bar, bushings, shock absorbers, springs. Suspension Rear: Independent rear suspension, trailing arms, shock absorbers, springs, sway bar, bushings. Steering System: Steering rack, power steering pump, fluid, steering column, tie rods, linkage. Brakes Front: Disc brakes, calipers, pads, rotors, brake lines, master cylinder. Brakes Rear: Disc brakes, calipers, pads, rotors, brake lines, parking brake mechanism. Wheels Tires: Wheel bolt patterns, tire sizes, pressure recommendations. Electrical System Overview: Wiring diagrams, fuse box locations, relay functions, battery, alternator, starter motor. Lighting System: Headlights, taillights, turn signals, interior lighting, bulb types. Instrument Panel: Gauges, warning lights, speedometer, tachometer, fuel gauge, temperature gauge. Comfort Systems: HVAC (Heating, Ventilation, Air Conditioning) system, blower motor, heater core, A/C compressor, refrigerant. Bodywork Exterior: Body panel removal and installation, door mechanisms, hood, trunk, bumpers, trim. Bodywork Interior: Seat removal, dashboard disassembly, door panel removal, headliner, carpeting. Glass Seals: Windshield, side windows, rear window replacement, seals, weatherstripping. Procedures Included Scheduled Maintenance: Oil changes, filter replacements, spark plug replacement, fluid level checks, brake inspections. Troubleshooting: Diagnostic procedures for common problems, fault finding techniques, error code interpretation (where applicable). Engine Repair: Complete engine rebuild procedures, gasket replacement, seal replacement, component testing. Transmission Repair: Manual and automatic transmission overhaul, gear replacement, clutch replacement, torque converter replacement. Brake Service: Brake pad/shoe replacement, rotor replacement, caliper overhaul, brake bleeding. Suspension Service: Strut/shock replacement, control arm bushing replacement, ball joint replacement, alignment specifications. Electrical Diagnostics: Wiring harness testing, component testing, starter/alternator testing, fuse/relay troubleshooting. Fuel System Service: Fuel injector cleaning/testing, fuel pump testing, fuel pressure checks, fuel filter replacement. HVAC Service: Refrigerant system servicing, blower motor replacement, heater core replacement, control valve testing. Body Panel Replacement: Procedures for replacing doors, fenders, hood, trunk lid, and associated hardware. Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine and transmission rebuilds). Diagnostic Capability: Detailed diagnostic information for mechanical, electrical, and fuel systems. Torque Specifications: Includes critical torque specifications for all major fasteners and components. Wiring Diagrams: Full set of detailed electrical wiring diagrams. Illustrations: Includes step-by-step illustrations and exploded views of components. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Resolution: High-resolution scans for clarity and readability. Searchability: Fully searchable text content for quick information retrieval. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-6 Cylinder, SOHC Displacement: 2.8 Liters (2788 cc) Bore X Stroke: 86 mm x 80 mm Compression Ratio: 8.1:1 Performance Horsepower Net: 169 hp @ 5800 rpm Torque Net: 175 lb-ft @ 3500 rpm Fuel System Fuel Delivery: Bosch L-Jetronic Fuel Injection Fuel Type: Unleaded Gasoline Lubrication Oil Type: SAE 20W-50 (recommended by BMW at the time for typical operating temperatures) Oil Capacity: 6.5 Liters (approx. 6.9 US quarts) with filter Cooling Coolant Type: 50/50 mix of ethylene glycol and distilled water Coolant Capacity: 11.5 Liters (approx. 12.2 US quarts) 🔧 Transmission Standard Transmission Type: 4-Speed Manual (Getrag 260) Optional Transmission Type: 3-Speed Automatic (ZF 4HP22) Features Manual Gear Ratios: 1st: 3.84, 2nd: 2.22, 3rd: 1.34, 4th: 1.00, Reverse: 3.15 Automatic Fluid Type: Dexron III (or equivalent ATF) Manual Fluid Type: SAE 75W-90 or SAE 80W-90 GL-4 gear oil 📐 Dimensions Exterior Length: 4725 mm (186.0 inches) Width: 1700 mm (66.9 inches) Height: 1420 mm (55.9 inches) Wheelbase: 2795 mm (110.0 inches) Weights Curb Weight: 1450 kg (approx. 3197 lbs) Gross Vehicle Weight Rating: 1900 kg (approx. 4189 lbs) 🛡️ Safety Features Ratings Crash Safety: NHTSA/IIHS ratings for this era are less standardized; focus on passive...