Mercedes Benz W114 280C 1972-1976 Service Repair Manual

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Distributeur:

UGS: 157644

Mots clés: 1972 1973 1974 1975 1976 280C Car Cars Mercedes Mercedes-benz W114

Variantes de produits

Description

The Mercedes-Benz W114 280C, produced between 1972 and 1976, represents a distinguished era of German engineering and understated elegance in the luxury executive mid-size coupe segment. As part of the first generation W114/W115 series, this model embodies a commitment to build quality and refined performance, featuring a robust unibody construction and a powerful 2.8-liter inline-6 SOHC engine (M130) with Bosch D-Jetronic fuel injection. Its design philosophy emphasizes timeless styling and driving comfort, making it a sophisticated choice for those who appreciate classic automotive craftsmanship. This comprehensive Workshop Service Repair Manual provides extensive guidance for the Mercedes-Benz W114 280C (chassis code W114.073) from 1972 to 1976. It covers all essential aspects of vehicle maintenance and repair, including detailed procedures for engine service, transmission overhaul, brake system maintenance, electrical system diagnostics, and suspension and steering system repairs. With hundreds of pages of information, including detailed substeps, illustrations, and wiring diagrams, this manual is an invaluable resource for owners and technicians seeking to ensure the optimal performance and longevity of their vehicle.

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

W114 280C

Model Generation:

First Generation (W114/W115)

Body Style:

Coupe

Codes

Chassis Code:

W114.073

👋 Introduction

Market Position

Vehicle Segment:

Luxury/Executive Mid-size Coupe

Competitive Analysis

Competitors:

BMW E9 Coupe, Audi 100 Coupe S

Key Features

Design Philosophy:

German engineering, build quality, and understated elegance typical of Mercedes-Benz

Manual Value Proposition:

Inexpensive way to keep the vehicle working properly by providing comprehensive repair information.

📋 Manual Details

Coverage Areas

Applicable Model Years:

1972, 1973, 1974, 1975, 1976

Page Count

Estimated Page Count:

Hundreds of pages

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Service Repair:

Comprehensive engine diagnosis, overhaul, and repair.

Transmission Service Repair:

Coverage for manual and automatic transmission service, repair, and overhaul.

Brake System:

Detailed procedures for brake system maintenance, repair, and adjustment.

Electrical System:

In-depth diagnostics and repair for all electrical components and circuits.

Wiring Diagrams:

Detailed and integrated wiring diagrams for troubleshooting the electrical system.

Suspension:

Repair and maintenance of suspension components, alignment, and ride height.

Steering:

Service and repair procedures for the steering system, including power steering.

Cooling System:

Maintenance and repair of the radiator, cooling fans, thermostat, and coolant passages.

Fuel Injection:

Specific coverage for the Bosch D-Jetronic fuel injection system.

Fuel System:

Service and repair of fuel pumps, lines, tanks, and associated components.

Emission System:

Information pertaining to emission control systems of the era.

Heater Air Conditional:

Service and repair of the HVAC system, including heating and ventilation.

Engine Control System:

Diagnostics and troubleshooting for engine management electronics.

Chassis Body:

Bodywork repair, structural integrity, and chassis components.

Restraint System:

Information on seat belts and early passive safety features.

Interior:

Service and repair procedures for interior trim and components.

Differential Drive:

Maintenance and repair of the rear axle differential and drive components.

Axle:

Service procedures for front and rear axles, including bearings and seals.

General Maintenance:

Routine maintenance procedures and schedules.

Troubleshooting:

Systematic troubleshooting guides for common and complex issues.

Periodic Lubrication:

Detailed lubrication points and recommended service intervals.

Procedures Included

Repair Procedures:

Step-by-step instructions for complete disassembly and reassembly of major components.

Diagnostic Procedures:

Methods for identifying and resolving vehicle faults, particularly for electrical systems.

Tune Up Procedures:

Guidance on engine tuning for optimal performance and emissions.

Electrical Troubleshooting:

Combined troubleshooting and electrical service procedures with detailed wiring diagrams.

Technical Depth

Depth:

Full factory service repair manual, suitable for DIYers and experienced mechanics.

Detail Level:

Hundreds of photos and illustrations, detailed substeps, notes, cautions, and warnings.

📊 Manual Specifications

File Format

Format:

Print Quality

Printability:

Printable without restriction, either in its entirety or select pages.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

Delivery

Delivery Method:

Instant download link available on the checkout page after payment.

Requirements

Software Requirements:

Adobe PDF Reader

⚙️ Engine Specifications

Primary Engine

Engine Type:

Inline-6 Cylinder, SOHC

Engine Displacement:

2.8 Liters (2778 cc)

Engine Code:

Performance

Horsepower:

Approximately 180 hp (SAE Gross)

Torque:

Approximately 230 Nm (SAE Gross)

Fuel System

Fuel Delivery:

Bosch D-Jetronic Electronic Fuel Injection

Fuel Type:

Premium Unleaded Gasoline

🔧 Transmission

Standard

Transmission Type:

4-Speed Manual (Standard on some models)

Optional

Transmission Type:

4-Speed Automatic (Optional)

Features

Drive Layout:

Rear-Wheel Drive

📐 Dimensions

Exterior

Wheelbase:

110.2 inches (2800 mm)

Length:

189.4 inches (4810 mm)

Width:

70.1 inches (1780 mm)

Height:

54.7 inches (1390 mm)

Weights

Curb Weight:

Approximately 3,300 - 3,500 lbs (1500 - 1600 kg)

🛡️ Safety Features

Ratings

Safety Standards:

Designed to contemporary automotive safety standards of the early 1970s.

Active Features

Braking System:

Front Disc Brakes, Rear Drum Brakes; often with power assistance.

Passive Features

Seat Belts:

Standard seat belts.

Body Construction:

Robust unibody construction with crumple zones.

💡 Technology Features

Infotainment

Audio System:

Period-correct factory AM/FM radio, potentially with an aftermarket upgrade.

Driver Assistance

Features:

Limited by era; focus on core driving dynamics and comfort features.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 3,000-5,000 miles or 6-12 months, depending on driving conditions (refer to manual for exact specifications).

Tune Up Interval:

Recommended annually or every 10,000-15,000 miles (refer to manual).

Fluid Specifications

Engine Oil:

Refer to manual for viscosity grade (e.g., 10W-40 or 20W-50 depending on climate) and API service classification.

Coolant:

Ethylene glycol-based antifreeze/coolant mixture.

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Transmission Fluid Auto:

Dexron-II or equivalent automatic transmission fluid (ATF).

Known Issues

Common Wear Items:

Fuel injection system components (fuel accumulators, pressure regulators), ignition system components, exhaust system, suspension bushings, and potential rust in common Mercedes-Benz areas.

Electrical Gremlins:

Age-related degradation of wiring insulation and connectors can lead to intermittent electrical faults.

📚 Vehicle History

Brand Heritage

Manufacturer:

Mercedes-Benz, known for engineering excellence and luxury vehicles.

Model Evolution

Introduction Year:

1968 (W114/W115 series)

Coupe Variant Introduction:

Facelift:

Minor updates occurred during its production run, including styling tweaks and feature enhancements.

Production

Production Years:

1968-1976

Manufacturing Location:

West Germany

🏆 Awards & Recognition

Recognitions

Automotive Press:

The W114/W115 series was generally praised for its build quality, comfort, and engineering. The 280C model offered a more stylish and powerful interpretation of the sedan's attributes.