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Mercedes Benz W116 450 SE SEL 1973-1980 Service Manual PDF Download
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Basic Information Identification Make: Mercedes-Benz Model: W116 450 SE / SEL Model Codes: 450 SE, 450 SEL Generation Generation Designation: First Generation W116 Introduction Market Position Luxury Segment: The W116...
Type: Engines
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Sku: 69673
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Mercedes
Mercedes Benz
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| Basic Information | |
| Identification | |
| Make: | Mercedes-Benz |
| Model: | W116 450 SE / SEL |
| Model Codes: | 450 SE, 450 SEL |
| Generation | |
| Generation Designation: | First Generation W116 |
| Introduction | |
| Market Position | |
| Luxury Segment: | The W116 was Mercedes-Benz's flagship luxury sedan during its production run, competing with other high-end European manufacturers. |
| Competitive Analysis | |
| Competitors: | Primary competitors included models from BMW (e.g., 7 Series), Jaguar (e.g., XJ), and other premium European luxury marques. |
| Key Features | |
| Design Philosophy: | The W116 embodied Mercedes-Benz's commitment to engineering excellence, safety, comfort, and durability, featuring a sophisticated and understated design. |
| Innovation: | Introduced significant safety innovations for its time, including crumple zones and a robust passenger safety cell. |
| Manual Details | |
| Coverage Areas | |
| Applicable Years: | 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 |
| Page Count | |
| Estimated Page Count: | > 10000 |
| Manual Type | |
| Type: | Workshop Service Repair Manual |
| Language | |
| Language: | English |
| Format | |
| Format: | PDF Download |
| Manual Coverage | |
| Systems Covered | |
| Engine: | Comprehensive coverage of the M117 V8 engine, including its M-Jet fuel injection system. |
| Transmission: | Detailed procedures for the automatic transmission (e.g., 3-speed automatic transmission). |
| Drivetrain: | Rear-wheel drive system, including driveshaft, differential, and axle components. |
| Suspension: | Front and rear suspension systems, including shock absorbers, springs, control arms, and bushings. |
| Brakes: | Hydraulic brake system, including disc brake systems (front and rear), master cylinder, brake lines, and calipers. |
| Steering: | Power steering system, including steering gear, pump, and steering linkage. |
| Electrical: | Comprehensive electrical system coverage, including battery, alternator, starter, ignition system, lighting, instrumentation, and wiring diagrams. |
| Fuel: | Fuel delivery system, including fuel pump, fuel lines, fuel filter, and fuel tank. |
| Cooling: | Engine cooling system, including radiator, water pump, thermostat, and coolant hoses. |
| Exhaust: | Exhaust system components, including manifold, catalytic converter (where applicable), mufflers, and pipes. |
| Body And Chassis: | Body panel removal and installation, structural components, doors, windows, and interior trim. |
| Procedures Included | |
| Maintenance: | Routine maintenance procedures such as oil changes, filter replacements, fluid checks, and tune-ups. |
| Troubleshooting: | Extensive troubleshooting guides for various systems, including diagnostic procedures and common fault diagnosis. |
| Repair: | Detailed step-by-step repair instructions for virtually all vehicle components and systems. |
| Disassembly And Assembly: | Comprehensive instructions for the removal, disassembly, cleaning, inspection, reassembly, and installation of components. |
| Adjustments: | Precise instructions for adjustments to engine timing, carburetor/fuel injection, brakes, clutch (if applicable), and other systems. |
| Specifications: | Inclusion of all critical service data, including torque specifications, fluid capacities, clearances, and wear limits. |
| Technical Depth | |
| Depth: | Factory-level technical detail, covering everything from basic adjustments to complete engine and transmission overhauls. |
| Visual Aids | |
| Illustrations: | Abundant pictorial diagrams, exploded views, drawings, and photographs to guide repair procedures. |
| Special Tools | |
| Tool References: | Identification and usage instructions for specialized service tools required for specific repair operations. |
| Manual Specifications | |
| File Format | |
| Format: | Portable Document Format (PDF) |
| Print Quality | |
| Printability: | Fully printable, allowing users to print specific sections or the entire manual. |
| Binding Type | |
| Digital Binding: | N/A (Digital download) |
| Paper Type | |
| Digital Paper Quality: | N/A (Digital download) |
| Software Requirement | |
| Reader: | Adobe Reader or compatible PDF viewer required. |
| Compatibility | |
| Operating Systems: | Compatible with Windows, Mac, and Linux operating systems. |
| Completeness | |
| Content Status: | 100% complete and intact, with no missing or corrupt pages/sections. |
| Engine Specifications | |
| Primary Engine | |
| Engine Type: | V8, SOHC |
| Engine Code: | M117 |
| Displacement: | 4520 cc (4.5 Liters) |
| Bore X Stroke: | 92.0 mm x 85.0 mm |
| Performance | |
| Horsepower Approx: | 220-230 hp (SAE Gross, depending on market and exact specification) |
| Torque Approx: | 370-380 Nm (SAE Gross, depending on market and exact specification) |
| Fuel System | |
| Fuel Injection: | Bosch M-Jet (Mechanical Fuel Injection) |
| Fuel Type: | Unleaded gasoline |
| Cooling | |
| Cooling System Type: | Water-cooled |
| Transmission | |
| Standard | |
| Transmission Type Standard: | 3-speed Automatic Transmission |
| Optional | |
| Transmission Type Optional: | Rarely, a 4-speed manual transmission was available in some markets, though highly uncommon. |
| Features | |
| Torque Converter: | Equipped with a torque converter for smooth power delivery. |
| Dimensions | |
| Exterior | |
| Wheelbase: | 2935 mm (115.6 inches) for SE, 3075 mm (121.1 inches) for SEL |
| Length: | Approx. 5000-5140 mm (197-202 inches) depending on SE/SEL and specific bumper design. |
| Width: | Approx. 1800-1810 mm (70.9-71.3 inches) |
| Height: | Approx. 1450-1460 mm (57.1-57.5 inches) |
| Weights | |
| Curb Weight Approx: | Approx. 1700-1800 kg (3750-3970 lbs) depending on model and equipment. |
| Safety Features | |
| Ratings | |
| Historical Safety Perception: | Highly regarded for safety due to robust construction and engineering principles of the era. |
| Active Features | |
| ABS: | Anti-lock Braking System (ABS) became available as an option in later years of the W116 production, particularly from 1978 onwards. |
| Passive Features | |
| Body Structure: | Reinforced passenger compartment, energy-absorbing steering column, and impact-absorbing bumpers. |
| Seat Belts: | Three-point seatbelts for front occupants were standard, with rear belts often optional or standard depending on market. |
| Technology Features | |
| Infotainment | |
| Radio System: | Typically featured AM/FM radio and cassette player systems, often with optional power antenna. |
| Driver Assistance | |
| Cruise Control: | Optional cruise control system available on many models. |
| Comfort Features | |
| Climate Control: | Sophisticated (for the era) automatic climate control system with air conditioning was often a feature. |
| Maintenance | |
| Service Intervals | |
| Oil Change Interval: | Typically every 5,000-10,000 km (3,000-6,000 miles) or annually, as per manual recommendations. |
| Major Service Interval: | Significant checks and component inspections recommended at intervals like 40,000-60,000 km (25,000-37,000 miles). |
| Fluid Specifications | |
| Engine Oil Type: | API SG or SF classification, SAE 10W-40 or 15W-40 commonly recommended (check manual for specific climate/usage). |
| Engine Oil Capacity: | Approx. 8.0 liters (8.5 US quarts) with filter change. |
| Coolant Type: | Ethylene glycol based antifreeze mixed with distilled water (50/50 ratio recommended). |
| Transmission Fluid Type: | ATF (Automatic Transmission Fluid) - Type 'A' Suffix 'A' or Dexron II is often applicable, but consult manual for precise specification. |
| Brake Fluid Type: | DOT 3 or DOT 4. |
| Known Issues | |
| Fuel System Aging: | Degradation of rubber fuel lines and components in the M-Jet system can lead to leaks or performance issues. |
| Cooling System Aging: | Radiator corrosion, water pump seal leaks, and thermostat failures are common with age. |
| Suspension Wear: | Worn control arm bushings, ball joints, and shock absorbers can lead to poor handling and ride comfort. |
| Electrical Gremlins: | Age-related issues with wiring harnesses, connectors, and vacuum-actuated systems (e.g., central locking, climate control). |
| Vehicle History | |
| Brand Heritage | |
| Mercedes Benz Legacy: | Built upon Mercedes-Benz's long-standing reputation for engineering, quality, and luxury vehicle production. |
| Model Evolution | |
| W116 Introduction: | The W116 platform succeeded the W108/W109 series and represented a significant step forward in luxury sedan design and technology for Mercedes-Benz. |
| W116 Successor: | Succeeded by the W126 S-Class, which further refined the luxury sedan formula. |
| Production | |
| Production Years Global: | 1972-1980 |
| Manufacturing Locations: | Primary manufacturing in Germany (e.g., Sindelfingen plant). |
| Awards & Recognition | |
| Recognitions | |
| Historical Acclaim: | The W116 was widely recognized for its build quality, driving dynamics, and contribution to automotive safety standards of its time. |