🏷️ Basic Information Identification Make: Mercedes-Benz Model: 280E Model Code: W123 Body Style: Saloon (Sedan) Generation Production Years: 1976-1985 Codes Chassis Code: W123 Engine Code Primary: M110 (inline-six, gasoline) 👋 Introduction Market Position Target Audience: Owners, DIY enthusiasts, professional mechanics working on W123 Mercedes-Benz 280E Competitive Analysis Uniqueness: Vehicle-specific, not generic; claims to be the 'best service manual available' Key Features Value Proposition: Enables users to service, repair, restore, maintain, and rebuild their vehicle comprehensively. Format Advantage: Digital format allows for easy reference, targeted printing, and avoids physical wear and tear. 📋 Manual Details Coverage Areas Years Covered: 1975-1985 Page Count Estimated Page Count: Extensive (specific number not provided, but implied to be comprehensive) Manual Type Type: Service/Repair/Workshop Manual Language Language: English Format Digital Format: HTML / PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Engine Systems: Engine systems, lubrication & maintenance, cooling, exhaust system Fuel Ignition: Fuel system, ignition control Transmission Drivetrain: Transmission, transaxle Chassis Suspension Steering: Suspension, steering, tires, wheels, frame & bumpers Brakes Restraints: Brakes, restraints Electrical Lighting: Wiring, lamps, audio, horn Body And Accessories: Body, wipers & washers Procedures Included General Repair: All repairs A-Z, step-by-step instructions for simple to complex procedures Maintenance: Lubrication, fluid checks, filter changes, scheduled maintenance Diagnostics Troubleshooting: Implicitly covered through detailed repair procedures and specifications Technical Depth Depth: Vehicle specific, highly detailed, suitable for novice to seasoned mechanics Content Enhancements: Illustrations, diagrams, specifications, wiring schematics, zoomable pictures 📊 Manual Specifications File Format Digital File Format: HTML and PDF Searchability: Fully indexed and searchable Hyperlinking: Hyperlinked for easy navigation Print Quality Print Ability: Printable pages for specific jobs Quality Description: Very High Quality Manual Binding Type Binding: Digital (no physical binding) Paper Type Paper: Digital (no physical paper) Requirements Software Requirement: Adobe PDF Reader Compatibility: All Versions of Windows & Mac Support Post Purchase Support: Full download support after purchase ⚙️ Engine Specifications Primary Engine Engine Type: Inline-six, Naturally Aspirated, Overhead Cam (OHC) Engine Code: M110 Displacement: 2.8 Liters (2789 cc) Bore X Stroke: 86.0 mm x 80.25 mm (approximate, common for M110) Performance Horsepower Range: 140-185 hp (depending on specific market, emissions controls, and fuel injection/carburetion) Torque Range: 210-240 Nm (approximate) Fuel System Fuel Delivery: Carburetor (e.g., Solex Zenith Stromberg) or Bosch K-Jetronic Fuel Injection (CIS) Fuel Type: Unleaded Gasoline (as emission standards evolved) Cooling Cooling System: Water-cooled 🔧 Transmission Standard Type Standard: 4-speed Manual Transmission Optional Type Optional: 4-speed Automatic Transmission (e.g., 4G-Tronic) Features Transmission Fluid Type: Dexron III (or equivalent specification, check manual for precise MB spec) Rear Axle Ratio: Varies (typically around 3.69:1 or similar for 280E) 📐 Dimensions Exterior Length: Approx. 4720 mm (185.8 inches) Width: Approx. 1790 mm (70.5 inches) Height: Approx. 1420 mm (55.9 inches) Weights Curb Weight: Approx. 1400-1550 kg (3086-3417 lbs) Gross Vehicle Weight: Approx. 1900-2000 kg 🛡️ Safety Features Ratings Crash Test Data: NHTSA ratings from the era are available, though less standardized than modern tests. W123 known for robust safety cage and crumple zones for its time. Active Features Braking System: Front Disc Brakes, Rear Drum Brakes (some later models may have rear discs). Power assisted. Steering System: Recirculating ball, power steering standard on most models. Passive Features Seat Belts: Three-point seat belts (front standard, rear optional/standard depending on year and market) Body Structure: Reinforced safety cell, energy-absorbing steering column, padded dashboard. 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM radio with cassette player (optional) and speakers. Aftermarket options prevalent. Driver Assistance Cruise Control: Optional on some models. Climate Control: Manual or automatic climate control system (thermostatic or vacuum operated), prone to vacuum leaks. Connectivity Connectivity Features: Limited to factory radio/cassette; no modern connectivity features like Bluetooth or USB. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 10,000-15,000 km (6,000-9,000 miles) or annually, refer to manual for exact intervals. Major Service Interval: Every 30,000-50,000 km (18,000-30,000 miles) for more in-depth checks and component replacements. Fluid Specifications Engine Oil Type: API SG or higher; viscosity typically 10W-40 or 15W-40, consult manual for specific MB approval (e.g., MB 229.1). Coolant Type: Ethylene glycol based antifreeze/coolant, mixed 50/50 with distilled water. MB approval MB 325.0. Brake Fluid Type: DOT 3 or DOT 4 (ensure compatibility). Known Issues Common Problems: Rust/corrosion (especially around wheel arches, door bottoms, jack points), vacuum system leaks (affecting climate control, central locking), aging fuel lines, injector seals (if fuel injected), biodegradable wiring insulation (in later models of this range), worn suspension bushings, differential whine. Common Repairs: Overhauling fuel injection systems, replacing vacuum hoses, body rust repair, suspension component replacement, cooling system component replacement (radiator, hoses, water pump). 📚 Vehicle History Brand Heritage Brand Philosophy: Mercedes-Benz renowned for engineering quality, durability, and safety in the premium segment. Model Evolution W123 Introduction: Introduced in 1976 as a successor to the W114/W115 models, the W123 established Mercedes-Benz's reputation for build...