🏷️ Basic Information Identification Make: Mercedes-Benz Model: W116 450 SE Model Code: W116 Year: 1973-1976 Market Segment: Luxury Sedan 👋 Introduction Market Position Positioning: The flagship luxury sedan of its era, representing Mercedes-Benz's commitment to engineering excellence, comfort, and safety. Competitive Analysis Competitors: Competed with other high-end luxury sedans of the period such as BMW 7 Series (E23), Cadillac Eldorado, Jaguar XJ, and various high-trim American sedans. Key Features Features: Robust build quality, sophisticated engineering, powerful V8 engine, comfortable ride, advanced safety features for its time, elegant styling. Manual Advantage: Enables owners to perform DIY maintenance and repairs, saving significant labor costs compared to dealership service. Manual Usability: Designed for ease of use, with numbered instructions, detailed illustrations, and a clear table of contents to quickly locate information. 📋 Manual Details Coverage Areas Vehicle Coverage: Mercedes-Benz W116 450 SE (1973, 1974, 1975, 1976 models, all styles) Page Count Estimated Page Count: Hundreds of pages (exact count not specified, but indicated as comprehensive) Manual Type Type: Factory Service Repair Manual Language Language: English Format File Format: PDF Download 📖 Manual Coverage Systems Covered Systems: General Maintenance, Troubleshooting, Engine Service/Repair, Transmission Service/Repair, Brake System, Wiring Diagram, Electrical System, Suspension, Periodic Lubrication, Steering, Cooling System, Fuel Injection/Fuel System, Emission System, Heater/Air Conditioning, Engine Control System, Chassis/Body, Restraint System, Interior, Differential/Drive, Axle Engine Control System Detail: Detailed coverage of the Bosch K-Jetronic fuel injection system, ignition system, and related engine management components. Brake System Detail: Comprehensive details on the four-wheel disc brake system, including hydraulic components, calipers, pads, rotors, and parking brake. Cooling System Detail: Covers radiator, water pump, thermostat, hoses, coolant recovery system (if applicable), and fan operation. Suspension Detail: Includes front and rear suspension components, shock absorbers, springs, control arms, bushings, and alignment procedures. Fuel Injection Detail: Covers the intricacies of the K-Jetronic system, including fuel distributors, pressure regulators, injectors, and associated sensors. Procedures Included Procedures: Maintenance, Troubleshooting, Repair, Rebuild, Refurbishment, Restoration, Diagnostics, Tuning Engine Repair Procedures: Engine disassembly, reassembly, valve adjustments, timing chain replacement, piston and ring service, cylinder head repair. Transmission Repair Procedures: Automatic transmission overhaul, fluid and filter changes, valve body diagnosis, and external adjustments. Steering System Repair: Detailed procedures for steering gearbox, tie rods, steering linkages, and power steering pump service. Lubrication Schedule: Detailed periodic lubrication points and recommended lubricants for various chassis and suspension components. Technical Depth Depth: Complete official factory information, detailed step-by-step instructions, advanced troubleshooting guide, professional technician level Electrical Diagnostics: In-depth coverage of the electrical system, including detailed wiring diagrams, troubleshooting guides for common electrical faults, and component testing. Chassis Body Repair: Information on body panel repairs, structural components, door and window mechanisms, and interior trim removal/installation. Wiring Diagrams: Comprehensive and detailed wiring diagrams essential for diagnosing and repairing electrical issues, color-coded for clarity. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely to be searchable due to PDF format, enabling quick access to specific information using keywords. Print Quality Printability: Printable without any restriction (individual pages or entire manual) Binding Type Binding: Digital Download (printable) Paper Type Paper Type: N/A (Digital) Software Requirements Reader: Adobe PDF Reader Compatibility Operating Systems: All PC based Windows operating systems, Mac Delivery Method Delivery: Instant download link provided on the checkout page after payment completion. ⚙️ Engine Specifications Primary Engine Engine Type: 4.5L SOHC V8 (M117 engine family) Performance Horsepower Approx: 225 hp @ 5000 rpm (US specification) Torque Approx: 270 lb-ft @ 3000 rpm (US specification) Compression Ratio: Approximately 8.0:1 (typical for this engine and emissions compliance) Fuel System Fuel Delivery: Bosch K-Jetronic Fuel Injection Engine Codes Engine Code: M117.982 (typical for 450 SE) 🔧 Transmission Standard Type: 3-speed Automatic (e.g., 3HP20 or similar Mercedes-Benz design) Gear Ratios: Specific gear ratios are detailed within the manual for the automatic transmission. Optional Type: Manual transmissions were rare or not offered on the 450 SE in most markets. Features Features: Torque converter automatic with hydraulic control. 📐 Dimensions Exterior Length: Approx. 196.7 inches (5000 mm) Width: Approx. 70.5 inches (1790 mm) Height: Approx. 55.1 inches (1400 mm) Weights Curb Weight: Approx. 3800 - 4000 lbs (1725 - 1815 kg) Wheelbase Wheelbase: Approx. 115.7 inches (2940 mm) 🛡️ Safety Features Ratings Historical Ratings: While formal crash testing as we know it today was nascent, the W116 was renowned for its robust construction and advanced safety engineering for its time. Active Features Features: Four-wheel disc brakes, power steering, advanced suspension geometry. Passive Features Features: Reinforced passenger cell, impact-absorbing steering column, padded interior surfaces, seat belts. 💡 Technology Features Infotainment Features: Period-appropriate AM/FM radio, optional cassette player, manual or power antenna. Climate control system with adjustable temperature and fan speed. Driver Assistance Features: Power steering, cruise control (optional on some models). Connectivity Features: Not applicable by modern standards; designed for analog operation. 🔧 Maintenance Service Intervals General Intervals: While specific...