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Mercedes Benz W116 450 SEL 1973-1980 Workshop Service Manual

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: 450 SEL Chassis Code: W116 Model Years Covered: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 Codes Engine Code Primary: M117 👋 Introduction...
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Taper: Car
Distributeur:
Mercedes Benz
UGS: 71679
Mots clés: 1973 1974 1975 1976 1977 1978 1979 1980 450 SEL Car Cars Mercedes Mercedes Benz W116
Mercedes Benz W116 450 SEL 1973-1980 Workshop Service Manual
🏷️ Basic Information
Identification
Make:
Mercedes-Benz
Model:
450 SEL
Chassis Code:
W116
Model Years Covered:
1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980
Codes
Engine Code Primary:
M117
👋 Introduction
Market Position
Target Segment:
Luxury Sedan
Era:
Early to late 1970s luxury automotive segment
Competitive Analysis
Competitors Era:
BMW E23 7 Series, Jaguar XJ, Cadillac Fleetwood, Lincoln Continental
Key Features
Vehicle Focus:
Luxury, comfort, engineering, advanced features for its time
Manual Purpose:
Empower owners and technicians to perform expert-level maintenance and repairs, maximize vehicle value
📋 Manual Details
Coverage Areas
Coverage Scope:
Comprehensive workshop service and repair
Target Audience:
Mechanical technicians, experienced DIY enthusiasts
Page Count
Estimated Page Count:
Extensive (Exact count not specified, but described as complete)
Manual Type
Type:
Workshop Service Manual
Language
Language:
English
Format
Format:
PDF Download
📖 Manual Coverage
Systems Covered
Engine Systems:
Engine disassembly, assembly, tune-ups, lubrication, cooling, fuel, ignition, exhaust
Drivetrain Systems:
Transmission (engine and transmission disassembly for repair/overhaul)
Electrical Systems:
Full electrical system diagnosis and repair, ignition system
Chassis Systems:
Brakes, steering, suspension (implied by workshop coverage)
Body Systems:
Body repair and maintenance procedures
Procedures Included
Maintenance Procedures:
Routine maintenance, servicing, tune-ups
Repair Procedures:
Diagnostic and repair procedures for various systems, overhaul of major components
Installation Procedures:
Removal and installation procedures for components and assemblies
Troubleshooting:
Diagnostic procedures for common and complex issues
Technical Depth
Depth:
Detailed, emphasizing special aspects of the product, includes proprietary component information
📊 Manual Specifications
File Format
File Type:
PDF
Printability:
Yes
Searchability:
Implied by PDF format, likely text-searchable
Delivery
Delivery Method:
Electronic delivery via Email
Delivery Speed:
Fast
Binding Type
Binding:
N/A (Digital format)
Paper Type
Paper Type:
N/A (Digital format)
⚙️ Engine Specifications
Primary Engine
Engine Type:
V8, Four-stroke internal combustion
Engine Displacement Liters:
4.5
Engine Displacement Cubic Inches:
276
Performance
Horsepower Approx Net:
220-230 hp (SAE Net, specific to year/market variations)
Torque Approx Net Lb Ft:
270-280 lb-ft (SAE Net, specific to year/market variations)
Fuel System
Fuel Delivery:
Bosch K-Jetronic Fuel Injection (for most later models and common variants)
Fuel Type:
Unleaded Gasoline
🔧 Transmission
Standard
Type:
Automatic
Model:
Mercedes-Benz 3-speed Automatic (e.g., 4G-Tronic)
Optional
Availability:
Manual transmissions were extremely rare or not offered on the 450 SEL in North America.
Features
Transmission Cooling:
Integrated transmission fluid cooler (typically via radiator)
📐 Dimensions
Exterior
Wheelbase Inches:
116.7 inches (approx.)
Overall Length Inches:
199.9 inches (approx.)
Overall Width Inches:
70.5 inches (approx.)
Weights
Curb Weight Lbs:
3900 - 4200 lbs (approx.)
🛡️ Safety Features
Ratings
Safety Features Era:
Advanced for its time: Crumple zones, safety steering column, reinforced cabin, laminated windshield
Active Features
Brakes:
Power-assisted 4-wheel disc brakes, often with ABS (Anti-lock Braking System) on later models (e.g., 1978 onwards)
Passive Features
Seatbelts:
Front and rear seatbelts
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM radio, often with cassette player as an option. Soundproofing for a quiet cabin was a key feature.
Driver Assistance
ABS:
Anti-lock Braking System (ABS) available on later models, a significant technological advancement for the time.
Climate Control
HVAC:
Advanced (for the era) automatic climate control system with air conditioning and heating.
Comfort Features
Power Features:
Power windows, power locks, power steering, power seats (often with memory function), cruise control.
🔧 Maintenance
Service Intervals
Oil Change Interval Miles:
Every 5,000 - 7,500 miles (or 6-12 months, depending on driving conditions and oil type used, consult manual for specifics)
Tune Up Interval:
As needed or every 20,000 - 30,000 miles, focus on ignition timing, fuel mixture, and spark plugs.
Fluid Specifications
Engine Oil Type:
API SG or higher, SAE 10W-40 or 15W-40 recommended (consult manual for exact viscosity based on climate).
Transmission Fluid Type:
Dexron III (or equivalent) automatic transmission fluid
Coolant Type:
Ethylene Glycol based coolant, typically a 50/50 mix with distilled water.
Known Issues
Common Wear Items:
Fuel injection components (e.g., injectors, fuel distributor), vacuum lines, climate control system, suspension bushings, fuel pump.
Electrical Gremlins:
While generally robust, aging wiring harnesses and connections can lead to intermittent electrical issues. The manual's diagnostic section is crucial here.
Corrosion:
As with many cars of this era, rust and corrosion in common areas (wheel arches, rocker panels, underbody) can be an issue depending on climate and care.
📚 Vehicle History
Brand Heritage
Heritage:
Mercedes-Benz reputation for engineering excellence, safety, and durability.
Model Evolution
W116 Introduction:
The W116 was Mercedes-Benz's first true 'S-Class' designation, replacing the W108/W109 series and setting the standard for modern luxury sedans.
W116 Variants:
Included the 280 S, 280 SE, 350 SE, 450 SE, 450 SEL (long wheelbase), and the performance-oriented 450 SLC coupe.
Production
Production Years:
1972-1980
Production Location:
Germany (primarily Sindelfingen)
🏆 Awards & Recognition
Recognitions
Industry Impact:
The W116 series established the 'S-Class' benchmark for luxury, safety, and technological innovation, influencing luxury car design for decades.
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