🏷️ Basic Information Identification Make: Mercedes-Benz Model: 280 SE Chassis Code: W116 Model Years Covered: 1977, 1978, 1979, 1980 👋 Introduction Market Position Target Audience: Mechanical technicians, automotive enthusiasts, owners performing maintenance and repair. Value Proposition: Enables technicians to build and maintain a reputation for quality service, helps owners save money on repairs and gain knowledge. Competitive Analysis Depth Of Coverage: Comparable to authorized Mercedes-Benz dealer service department information. Key Features Accuracy: Endeavored to ensure accuracy of information. Completeness: Complete Service Manual containing all necessary instructions. Safety Notation: Emphasizes safety information through WARNING, CAUTION, and NOTE notations. 📋 Manual Details Coverage Areas Primary Coverage: Repair and overhaul of Mercedes-Benz W116 280 SE Included Components: Components manufactured for Mercedes-Benz W116 280 SE, proprietary components with manufacturer instructions Page Count Estimated Page Count: Extensive (specific number not provided, implies comprehensive coverage) Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed repair and overhaul, tune-ups, lubrication system, fuel system, ignition system Transmission: Detailed repair and overhaul Electrical System: Covered Bodywork: Covered Exhaust System: Covered Procedures Included Routine Maintenance: Included Servicing: Included Diagnostics: Included Repair: Included Removal And Installation: Included Assemblies And Disassemblies: Included Technical Depth Depth: Comprehensive, suitable for experienced technicians and knowledgeable owners; covers engine and transmission disassembly. Emphasis: Special aspects of the product, proper function of components, judging overall car performance. Special Requirements: Refers to special tools with Mercedes-Benz W116 280 SE specific tool numbers, emphasis on torque wrench usage. 📊 Manual Specifications File Format Format: PDF Delivery Method: Electronic Delivery via Email Delivery Speed: Fast Printability: Yes Searchability: Assumed searchable due to PDF format, though not explicitly stated. Binding Type Type: N/A (Digital PDF) Paper Type Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder (implied by 280 SE designation) Engine Code: Likely M110 (2.8L DOHC) for this period and model, though not explicitly stated in provided text. Displacement: 2.8 Liters (2789 cc) - typical for 280 SE models of this era. Performance Horsepower: Approximately 180-185 hp (SAE Gross) - typical for M110 engine in this configuration. Torque: Approximately 230-235 Nm (170-173 lb-ft) - typical for M110 engine. Fuel System Fuel Delivery: Likely Bosch K-Jetronic (CIS) mechanical fuel injection, a common system for Mercedes-Benz at this time. Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Type: Likely a 4-speed automatic transmission (e.g., 4G-Tronic) or a 4-speed manual transmission was available as standard or optional depending on market. Optional Transmission Type: The other transmission option (manual if auto standard, auto if manual standard). Features Torque Converter Lockup: If automatic, likely featured torque converter lockup for improved highway efficiency. 📐 Dimensions Exterior Length: Approximately 4960 mm (195.3 in) - typical W116 sedan dimensions. Width: Approximately 1800 mm (70.9 in) - typical W116 sedan dimensions. Height: Approximately 1420 mm (55.9 in) - typical W116 sedan dimensions. Weights Curb Weight: Approximately 1700-1800 kg (3748-3968 lbs) - dependent on transmission and options. 🛡️ Safety Features Ratings Crash Test Data: W116 was a pioneer in safety for its era; featured a highly rigid safety cell, crumple zones, and safety-oriented interior design. Specific ratings (like NHTSA or Euro NCAP) for this era are less comparable to modern standards. Active Features Brakes: Four-wheel disc brakes (ventilated front discs likely), power-assisted braking system. Passive Features Steering Column: Collapsible steering column. Interior: Energy-absorbing dashboard, padded surfaces, safety belts. 💡 Technology Features Infotainment Audio System: Original systems would have been basic AM/FM radio, possibly with an 8-track or cassette player. Modern upgrades are common. Climate Control: Optional automatic climate control (Thermotronic) was a significant technological feature for its era, using vacuum-actuated servos. Driver Assistance Cruise Control: Optional cruise control system available. Lighting: Halogen headlamps, potentially with headlight washers/wipers as an option. Connectivity Original Features: No modern connectivity features like Bluetooth or USB. 🔧 Maintenance Service Intervals Oil Change: Typically every 5,000-10,000 km (3,000-6,000 miles) or 6-12 months, depending on driving conditions. Tune Up: Scheduled at significant mileage intervals, covering ignition system, fuel system, and general engine checks. Fluid Specifications Engine Oil: Refer to manual for specific viscosity (e.g., SAE 10W-40 or 15W-40) and API service classification (e.g., SF or SG). Coolant: Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Specific Mercedes-Benz approved coolant should be used. Transmission Fluid: Specific ATF (Automatic Transmission Fluid) type required for automatic transmissions (e.g., Dexron II or equivalent); manual transmission fluid type specified in manual. Known Issues Common Wear Items: Fuel injectors (especially older seals), fuel pump, ignition components (distributor cap, rotor, spark plug wires), wear in suspension bushings, aging rubber hoses and seals. Climate Control System: Often requires attention due to age of components, vacuum actuators, and refrigerant systems. Rust And Corrosion: Potential for rust in common areas like wheel arches, rocker panels, and around windows,...