🏷️ Basic Information Identification Make: BMW Model: 5 Series Model Variant: 525, 525i Year: 1982 Codes Chassis Code: E28 👋 Introduction Market Position Segment: Executive Sedan Reputation: Known for engineering excellence, driving dynamics, and build quality Competitive Analysis Competitors: Mercedes-Benz W123, Audi 100, Volvo 240 Key Features Design Philosophy: Focus on driver engagement, robust mechanicals, and understated luxury Target Audience: Professionals, enthusiasts seeking a sophisticated and reliable German sedan 📋 Manual Details Coverage Areas Regions Covered: Global (primarily North American and European specifications) Market Focus: Service and repair for the 1982 BMW 525 and 525i models Page Count Estimated Pages: 600-800 (typical for factory service manuals of this era) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: M30B32, M30B28 (Engine mechanical, lubrication, cooling, fuel delivery, ignition, emissions control) Transmission: Manual (Getrag 260) and Automatic (ZF 4HP22) (overhaul, adjustment, troubleshooting) Drivetrain: Clutch, driveshaft, differential, rear axle assembly (disassembly, inspection, repair) Suspension: Front struts, rear trailing arms, anti-roll bars, bushings (diagnosis, replacement, alignment specifications) Brakes: Front and rear disc brakes, hydraulic system, parking brake (master cylinder, calipers, pads, rotors, bleeding procedures) Steering: Power steering system, steering gear, tie rods, steering column (maintenance, overhaul, troubleshooting) Electrical: 12V DC system, battery, alternator, starter, lighting, gauges, power accessories, wiring diagrams Body And Chassis: Body panels, doors, hinges, latches, glass, seals, frame (adjustments, repair techniques) Interior: Seats, dashboard, trim panels, HVAC system (disassembly, repair of components) Heating And Air Conditioning: HVAC system components, refrigerant, fan motor, controls (service and repair) Procedures Included Maintenance: Oil changes, filter replacements, tune-ups, fluid checks, belt adjustments, spark plug replacement Troubleshooting: Diagnostic charts, symptom-based troubleshooting for engine, electrical, and mechanical issues Repair: Component removal, disassembly, inspection, assembly, and installation for all major systems Diagnostics: Diagnostic codes (where applicable for the era), voltage checks, resistance tests, pressure tests Special Tools: Identification and usage of BMW-specific and general automotive tools for repairs Torque Specifications: Detailed torque values for critical fasteners across all systems Tightening Sequences: Specific sequences for tasks like cylinder head installation Technical Depth Depth: Comprehensive (from basic maintenance to full engine and transmission rebuilds) Diagnostic Capability: Advanced diagnostic procedures for identifying root causes of malfunctions Rebuild Instructions: Detailed step-by-step instructions for overhauling major mechanical components 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable, allowing for quick lookup of specific terms and procedures Print Quality Quality: High-resolution scans of original factory documents, ensuring clarity of text and diagrams Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Code 525: M30B28 Engine Code 525I: M30B32 (typically, though some markets may have had M30B28 in 'i' variants for '82) Configuration: Inline-6 Cylinder Displacement 525: 2.8 Liters (2788 cc) Displacement 525I: 3.2 Liters (3210 cc) or 2.8 Liters (2788 cc) depending on market/specific model code Performance Horsepower 525: Approx. 140-145 hp @ 5200 rpm (M30B28) Horsepower 525I: Approx. 180-184 hp @ 5500 rpm (M30B32, L-Jetronic) Torque 525: Approx. 170-175 lb-ft @ 3500 rpm (M30B28) Torque 525I: Approx. 200-210 lb-ft @ 3500 rpm (M30B32, L-Jetronic) Fuel System Fuel Delivery: Bosch L-Jetronic or LE-Jetronic Fuel Injection Fuel Type: Unleaded Gasoline (Premium) Ignition System: Electronic Ignition (Bosch) 🔧 Transmission Standard Standard Transmission: 4-speed Manual (Getrag 260) Optional Optional Transmission: 3-speed Automatic (ZF 4HP22) Features Clutch: Hydraulically actuated single dry plate clutch Automatic Features: Lock-up torque converter (on some versions), 'Economy'/'Sport' modes 📐 Dimensions Exterior Length: Approx. 4,725 mm (186 in) Width: Approx. 1,700 mm (67 in) Height: Approx. 1,415 mm (55.7 in) Wheelbase: Approx. 2,795 mm (110 in) Weights Curb Weight: Approx. 1,450 - 1,550 kg (3,200 - 3,400 lbs), depending on transmission and options 🛡️ Safety Features Ratings Era Safety Standards: Conformed to 1980s passive safety standards, focusing on structural integrity Active Features Brakes: Four-wheel power-assisted disc brakes Suspension: Independent front suspension and semi-trailing arm rear suspension for stability Passive Features Seatbelts: Three-point inertia-reel seat belts (front), lap belts (rear) Steering Column: Collapsible steering column for improved impact protection 💡 Technology Features Infotainment Radio System: Optional AM/FM radio with cassette player, often from Blaupunkt or Becker Speaker System: Basic speaker setup, often front door and rear parcel shelf Driver Assistance ABS: Optional Anti-lock Braking System (ABS) available on some models Connectivity Connectivity Features: No modern connectivity features (Bluetooth, USB); basic car phone installation possible 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or 6-12 months, whichever comes first (consult manual for exact spec) Spark Plug Replacement: Intervals vary by plug type, but generally around 30,000-60,000 miles for standard plugs (check manual) Timing Belt Chain: M30 engines use a timing chain, which generally lasts the life of the engine, but tensioners and guides require periodic inspection. Fluid Specifications Engine Oil Type: API SG, SF, or higher, viscosity...