Mercedes Benz W116 280 S SE 1973-1980 Service Repair Manual

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: W116 Model Variant: 280 S, 280 SE Generation Generation Code: First Generation Codes Chassis Code: W116 👋 Introduction Market Position Positioning: Flagship luxury...

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Type: Car

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Sku: 423721

Tags: 1973 1974 1975 1976 1977 1978 1979 1980 280 S 280 SE Car Cars Featured Mercedes Mercedes-benz W116

Product variants

Description

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

Model Variant:

280 S, 280 SE

Generation

Generation Code:

First Generation

Codes

Chassis Code:

👋 Introduction

Market Position

Positioning:

Flagship luxury sedan of its era, known for build quality, comfort, and technological advancements

Competitive Analysis

Competitors:

BMW E23 7 Series, Jaguar XJ, Cadillac DeVille

Key Features

Design Philosophy:

Robust construction, sophisticated engineering, emphasis on safety and driver comfort

Innovations:

One of the first Mercedes-Benz models with Crumple zones, advanced chassis design for its time

📋 Manual Details

Coverage Areas

Applicable Years:

1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980

Page Count

Total Pages:

Over 10,000

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

File Format:

📖 Manual Coverage

Systems Covered

Engine:

Detailed diagnosis, repair, overhaul, specifications for 2.8L inline-six engines (M110)

Fuel System:

Fuel injection (Bosch K-Jetronic), fuel pump, lines, filters, troubleshooting

Ignition System:

Distributor, ignition coils, spark plugs, troubleshooting, timing

Transmission:

Automatic and Manual transmission overhaul, repair, fluid checks, operation

Drivetrain:

Driveshaft, differential, rear axle assembly, maintenance and repair

Brakes:

Hydraulic system, calipers, discs, master cylinder, power assist, ABS (if equipped), adjustments, bleeding

Steering:

Power steering system, pump, hoses, steering gear, adjustments, troubleshooting

Suspension:

Front and rear suspension, shock absorbers, springs, control arms, ball joints, bushings, alignment

Electrical System:

Battery, alternator, starter, wiring diagrams, fuse box, lighting, accessories, troubleshooting

Body And Chassis:

Body panels, doors, windows, locks, glass, frame, rust repair, interior trim

Heating Ventilation Air Conditioning:

HVAC system, climate control, A/C compressor, refrigerant, heater core, blower motor

Fuel And Emissions:

Emissions control systems, catalytic converters (later models), exhaust system components

Procedures Included

Maintenance:

Routine service, fluid changes, filter replacements, lubrication, tune-ups

Troubleshooting:

System-specific diagnostic procedures, symptom-based troubleshooting guides

Repair:

Component removal, installation, disassembly, assembly, and repair for all major systems

Adjustments:

Carburetor/fuel injection adjustments, ignition timing, brake adjustments, suspension alignment

Special Tools:

Identification and usage of specific Mercedes-Benz service tools

Technical Depth

Depth:

Comprehensive, from basic maintenance to complete engine and transmission rebuilds

Detail Level:

Step-by-step instructions with detailed explanations and pictorial diagrams

Diagrams:

Exploded views, wiring schematics, detailed illustrations, and photos

Specifications:

Factory specifications, torque values, wear limits, tolerances, and fluid capacities

📊 Manual Specifications

File Format

Format:

Print Quality

Printability:

Printable

Resolution:

High resolution for clear viewing and printing

Binding Type

Binding:

Not Applicable (Digital PDF)

Paper Type

Paper:

Not Applicable (Digital PDF)

Compatibility

Os Compatibility:

Windows, Mac, Linux OS

Requirements

Software Requirement:

Adobe Reader

⚙️ Engine Specifications

Primary Engine

Engine Code:

Engine Type:

DOHC Inline-6

Displacement:

2.8 Liters (2780 cc)

Performance

Horsepower 280S:

160 PS (158 hp) at 5500 rpm (approx.)

Torque 280S:

240 Nm (177 lb-ft) at 4000 rpm (approx.)

Horsepower 280Se:

185 PS (182 hp) at 5750 rpm (approx.) (with fuel injection)

Torque 280Se:

238 Nm (176 lb-ft) at 4500 rpm (approx.) (with fuel injection)

Fuel System

Fuel Delivery 280S:

Twin Zenith carburetors

Fuel Delivery 280Se:

Bosch D-Jetronic or K-Jetronic fuel injection

Compression Ratio

Compression Ratio:

8.0:1 or 8.7:1 (depending on variant and year)

🔧 Transmission

Standard

Transmission Type 280S:

4-speed Manual

Optional

Transmission Type Optional:

3-speed Automatic (Mercedes-Benz 4G-Tronic)

Features

Clutch Type:

Dry single-plate (Manual transmission)

📐 Dimensions

Exterior

Length:

Approx. 4960 mm (195.3 in)

Width:

Approx. 1800 mm (70.9 in)

Height:

Approx. 1420 mm (55.9 in)

Weights

Curb Weight 280S Manual:

Approx. 1650 kg (3638 lbs)

Curb Weight 280Se Auto:

Approx. 1750 kg (3858 lbs)

🛡️ Safety Features

Ratings

Era Safety Standards:

Designed to exceed contemporary safety standards of the early to mid-1970s

Active Features

Brakes:

Four-wheel disc brakes with power assistance

Steering:

Recirculating ball steering with power assist

Passive Features

Body Structure:

Reinforced safety cell, crumple zones (front and rear)

Safety Features:

Collapsible steering column, padded interior surfaces, safety glass

💡 Technology Features

Infotainment

Radio:

Typically analog or early digital radios, often with cassette players later in the production run

Driver Assistance

Cruise Control:

Optional feature on many models

Connectivity

Connectivity Era:

Limited by modern standards; focused on basic vehicle functions

🔧 Maintenance

Service Intervals

Oil Change Interval:

Consult manual; typically every 5,000-10,000 km (3,000-6,000 miles) or annually

Transmission Fluid Interval:

Consult manual; typically at 40,000-60,000 km (25,000-37,000 miles) for automatic

Spark Plug Replacement:

Consult manual; typically every 30,000-50,000 km (18,000-30,000 miles)

Fluid Specifications

Engine Oil Type:

API SF or SG rated multi-viscosity oil (e.g., 10W-40, 20W-50 depending on climate)

Engine Oil Capacity:

Approx. 7.5 Liters (7.9 US Quarts)

Coolant Type:

Ethylene glycol-based antifreeze and water mixture (50/50 recommended)

Brake Fluid Type:

DOT 3 or DOT 4

Power Steering Fluid:

Mercedes-Benz Power Steering Fluid or equivalent Dexron III ATF

Known Issues

Common Problems:

Rust in common areas (wheel arches, sills, trunk floor), vacuum hose degradation, K-Jetronic fuel system tuning, aging electrical components, climate control system issues

Parts Information

Oem Parts Importance:

Emphasis on using genuine Mercedes-Benz parts for reliability and correct fitment

📚 Vehicle History

Brand Heritage

Brand Legacy:

Mercedes-Benz's long-standing reputation for engineering excellence, luxury, and durability

Model Evolution

Introduction Year:

End Of Production Year:

Predecessor:

W108/W109 S-Class

Successor:

W126 S-Class

Production

Production Period:

1972-1980

Manufacturing Location:

Germany

🏆 Awards & Recognition

Recognitions

Reputation:

Widely regarded as a landmark in automotive safety and luxury engineering for its time

Ratings

Build Quality Perception:

Exceptional, setting a benchmark for automotive construction and longevity