🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Year: 1982 Chassis Code: W123 Engine Code: M110 (likely, for 280E) Codes Production Variant: 280E 👋 Introduction Market Position Positioning: Essential resource for owners and mechanics of the Mercedes-Benz W123 280E, a classic luxury sedan known for its build quality and engineering. Competitive Analysis Value Proposition: Provides comprehensive factory-level repair information, significantly reducing the cost of professional servicing and enabling DIY maintenance. Key Features Feature Highlight: The inclusion of hundreds of photos, detailed step-by-step instructions, and comprehensive electrical diagrams sets this manual apart for its practical usability. 📋 Manual Details Coverage Areas Coverage: Complete factory workshop service and repair Page Count Estimated Pages: Hundreds (exact number not specified but implies extensive coverage) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Full engine disassembly, assembly, diagnostics, and repair for M110 engine. Fuel System: Bosch K-Jetronic fuel injection system diagnosis and repair, fuel pump, injectors, fuel lines. Ignition System: Distributor, ignition coil, spark plugs, ignition timing adjustments. Cooling System: Radiator, water pump, thermostat, hoses, fan, coolant specifications. Lubrication System: Oil pump, oil filter, oil pressure, oil change procedures, fluid specifications. Transmission Manual: Service and repair of 4-speed and 5-speed manual transmissions, clutch replacement. Transmission Automatic: Service and repair of the automatic transmission (likely 4-speed 4G-Tronic), fluid changes, diagnostics. Drivetrain: Driveshaft, universal joints, differential, axle shafts, lubrication. Suspension Front: MacPherson struts, control arms, ball joints, bushings, steering knuckle, springs, shock absorbers. Suspension Rear: Independent rear suspension, trailing arms, differential mounts, springs, shock absorbers, bushings. Steering System: Power steering system diagnosis, pump, steering box, tie rods, steering linkage. Brakes Front: Disc brake calipers, rotors, pads, brake lines, master cylinder. Brakes Rear: Disc brake calipers, rotors, pads, brake lines, parking brake mechanism. Electrical System Charging: Alternator, voltage regulator, battery, charging circuit diagnostics. Electrical System Starting: Starter motor, starter solenoid, ignition switch, starting circuit. Electrical System Lighting: Headlights, taillights, interior lights, bulb specifications, wiring diagrams. Electrical System Instruments: Dashboard instruments, gauges, warning lights, speedometer, tachometer. Electrical System Accessories: Wipers, washers, horn, power windows, central locking (if equipped), radio wiring. Body Exterior: Body panel removal and installation, door mechanisms, hood, trunk, bumpers, trim. Body Interior: Seat removal, dashboard disassembly, interior trim panels, headliner. HVAC System: Heating system, ventilation, blower motor, heater core, air conditioning system (if equipped). Exhaust System: Exhaust manifolds, catalytic converter (if applicable for US models), mufflers, pipes, hangers. Procedures Included Maintenance: Regular maintenance tasks, fluid changes, filter replacements, lubrication. Troubleshooting: Systematic troubleshooting guides for common and complex issues, diagnostic charts. Repair: Step-by-step repair procedures for all major vehicle components, including detailed instructions. Disassembly Assembly: Complete disassembly and reassembly instructions for all major systems. Wiring Diagrams: Detailed electrical wiring diagrams for all circuits, facilitating diagnosis and repair. Specifications: Torque specifications, clearances, fluid capacities, electrical component values. Technical Depth Depth: Full factory workshop level, suitable for professional mechanics and experienced DIY enthusiasts. Illustrations: Hundreds of photos and illustrations to guide procedures. Detail Level: Detailed substeps, notes, cautions, and warnings for critical information. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Printable without restriction (individual pages or entire manual). Binding Type Binding: N/A (Digital Download - user prints and binds) Paper Type Paper: N/A (Digital Download - user chooses paper type) Requirements Software: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, 4-stroke, naturally aspirated gasoline engine. Engine Displacement: 2.8 Liters (2785 cc) Performance Horsepower: Approximately 185 PS (182 bhp; 136 kW) at 5800 rpm (DIN rating for Euro spec, US spec may vary slightly). Torque: Approximately 234 Nm (173 lb-ft) at 4500 rpm (DIN rating for Euro spec, US spec may vary slightly). Fuel System Fuel Delivery: Bosch K-Jetronic mechanical fuel injection. Fuel Type: Unleaded gasoline (Premium/Super) Other Bore X Stroke: 86.0 mm x 80.25 mm Compression Ratio: 8.2:1 or 8.7:1 (depending on market and exact engine variant) 🔧 Transmission Standard Type: 4-speed manual transmission (standard for many markets). Optional Type: 4-speed automatic transmission (4G-Tronic, optional in most markets). Features Automatic Features: Torque converter, hydraulic control, possibly 'Economy'/'Sport' modes. 📐 Dimensions Exterior Body Styles: 4-door Sedan (Saloon), 5-door Estate (T-model), 2-door Coupe, 2-door Cabriolet (rare). Length: Approximately 4725 mm (186.0 in) for Sedan. Width: Approximately 1786 mm (70.3 in) for Sedan. Height: Approximately 1438 mm (56.6 in) for Sedan. Wheelbase: Approximately 2795 mm (110.0 in) for Sedan. Weights Curb Weight: Approximately 1450-1550 kg (3197-3417 lbs) depending on body style and equipment. Gross Vehicle Weight Rating: Varies by model and market, typically around 2000 kg. 🛡️ Safety Features Ratings Historical Context: While formal crash test ratings like modern NCAP were not prevalent in 1982, the W123 chassis was engineered with a strong focus on passive safety for its era, including a robust safety cage and energy-absorbing crumple zones. Passive Features...