🏷️ Basic Information Identification Make: Mercedes-Benz Model: 560SEC Year: 1986 Codes Chassis Code: C126 Generation Generation Name: Second Generation (W126/C126) Generation Years: 1980-1991 👋 Introduction Market Position Positioning: The 560SEC represented the pinnacle of Mercedes-Benz engineering and luxury in the mid-1980s, a grand tourer coupe designed for discerning clientele. Competitive Analysis Competitors: Competed with other high-end luxury coupes of the era such as the BMW 7 Series Coupe (E24 635CSi), Jaguar XJ-S, and possibly some higher-spec models from Cadillac and Lincoln. Key Features Features Highlight: Powerful V8 engine, sophisticated independent suspension, luxurious interior appointments, advanced safety features for its time (e.g., ABS), and iconic coupe styling. Manual Value Proposition Value For Owner: Empowers owners to perform maintenance and repairs, saving significant costs and enabling informed discussions with professional mechanics. Facilitates understanding of complex systems. 📋 Manual Details Coverage Areas Coverage Scope: All models, all configurations for 1986 Mercedes-Benz 560SEC Page Count Estimated Page Count: > 1000 Manual Type Type: Service and Repair Manual Language Language: English Format Digital Format: PDF (over 70 separate sections) Compatibility: Windows, Mac (requires Adobe Acrobat Reader) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete coverage of the M117 V8 engine, including disassembly, inspection, repair, and reassembly. Engine Management: Detailed diagnostics and repair procedures for the Bosch KE-Jetronic fuel injection system, ignition system, and emission control systems. Transmission: Repair and maintenance of the 4-speed automatic transmission (722.3). Brakes: Service and repair for the Anti-lock Braking System (ABS), brake fluid, calipers, rotors, and lines. Suspension Steering: Maintenance and repair of the independent front and rear suspension, power steering system, and steering components. Electrical: Comprehensive wiring schematics, diagnostic procedures for lighting, instrumentation, power windows, mirrors, seats, and climate control. Body Chassis: Bodywork repair, door mechanisms, glass replacement, interior trim, and structural components. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication, and inspection procedures. Repair Rebuild: Detailed step-by-step repair and overhaul instructions for all major mechanical and electrical components. Troubleshooting: Systematic diagnostic charts and troubleshooting guides for common and complex issues. Part Identification: Part layouts and identification of specific components and their corresponding part numbers. Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine and transmission overhauls, electrical system diagnostics, and bodywork. 📊 Manual Specifications File Format PDF Quality: High resolution, optimized for viewing and printing. Searchable Text: Likely searchable text within PDF sections for easy navigation. Print Quality Print Capability: Print specific pages or sections as needed. Binding Type Binding: Digital (PDF files) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Code: M117 Engine Type: SOHC V8 Displacement: 5.6 Liters (5549 cc) Performance Horsepower: Approx. 238 hp @ 4750 rpm (European spec; US spec slightly lower due to emissions equipment) Torque: Approx. 330 lb-ft @ 3250 rpm (European spec) Fuel System Injection System: Bosch KE-Jetronic (K-Jetronic with Lambda control) Fuel Type: Unleaded Gasoline (Premium) Cooling System Coolant Type: Mercedes-Benz Specification 325.0 (or equivalent G05/G11 coolant) Lubrication Oil Type: API SG/CD, SAE 15W-40 or 10W-40 recommended (check manual for specific MB approval numbers) 🔧 Transmission Standard Type: 4-speed Automatic Transmission Model: 722.3 Features Shift Modes: Standard, Economy (E) and Sport (S) modes. Fluid Specifications Fluid Type: MB Approved Automatic Transmission Fluid (e.g., MB 236.1, Dexron III or equivalent often compatible) 📐 Dimensions Exterior Length: Approx. 4960 mm (195.3 in) Width: Approx. 1800 mm (70.9 in) Height: Approx. 1410 mm (55.5 in) Weights Curb Weight: Approx. 1780 kg (3924 lbs) Gross Vehicle Weight Rating: Approx. 2200 kg (4850 lbs) 🛡️ Safety Features Ratings Historical Safety Context: Designed in an era before standardized NCAP ratings. Focused on passive safety features and structural integrity. Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional ASD (Automatic Slip Differential) available on some later models, but likely not standard on 1986 560SEC. Passive Features Airbags: Driver-side airbag standard; passenger airbag generally not available for this model year. Seatbelts: Three-point inertia-reel seatbelts for front and rear occupants. Structure: Reinforced passenger cell, crumple zones, and side-impact protection beams. 💡 Technology Features Infotainment Audio System: Original Becker Grand Prix or similar premium audio system, often with cassette player. Driver Assistance Cruise Control: Standard cruise control system. Comfort Features Seats: Power-adjustable front seats with memory functions, heated seats often optional. Windows Mirrors: Power windows, power-adjustable and heated exterior mirrors. Sunroof: Power tilt/slide sunroof. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 km (6,000 miles) or 12 months, whichever comes first, under normal driving conditions (refer to manual for specifics). Transmission Fluid Change: Every 50,000 km (30,000 miles) or 24 months recommended, though some sources suggest longer intervals. Manual is definitive. Spark Plugs: Bosch Super Plus (e.g., W8AC or similar) or equivalent, replacement interval typically around 30,000-40,000 km. Fluid Specifications Brake Fluid: DOT 3 or DOT 4; always check manual for exact specification and bleeding procedures. Power Steering...