Mercedes-benz W123 280E 1976-1985 Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Generation Generation: First Generation Codes Chassis Code: W123 👋 Introduction Market Position Target Audience: Professional mechanics and DIY enthusiasts looking for...

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Taper: Car

Distributeur:

UGS: 390005

Mots clés: 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 280E Car Cars Mercedes Mercedes-benz W123

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

W123 280E

Generation

Generation:

First Generation

Codes

Chassis Code:

👋 Introduction

Market Position

Target Audience:

Professional mechanics and DIY enthusiasts looking for in-depth repair and maintenance information for the Mercedes-Benz W123 280E.

Competitive Analysis

Value Proposition:

Provides the most detailed, comprehensive, and accurate repair data, including pictorial diagrams, to ensure successful servicing and repair.

Key Features

Pictorial Diagrams:

Includes detailed illustrations, exploded diagrams, drawings, and photos to guide users through repair procedures.

Special Tool References:

References and illustrates specific Mercedes-Benz special service tools required for certain operations.

Safety Precautions:

Highlights safety notes, cautions, and warnings to ensure safe operation and prevent damage to the vehicle or injury to the technician.

📋 Manual Details

Coverage Areas

Model Years Covered:

1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985

Engine Variants Covered:

280E (M110 engine)

Chassis Types Covered:

Primarily Sedan (Saloon), but many W123 powertrain and mechanical procedures are applicable to Coupe and Estate (Kombi) variants of the same era.

Page Count

Total Pages:

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

File Format:

📖 Manual Coverage

Systems Covered

Engine:

Detailed diagnosis, repair, overhaul, specifications, maintenance for the M110 inline-six cylinder engine (2.8L).

Fuel System:

Bosch K-Jetronic fuel injection system, fuel pump, fuel injectors, fuel accumulator, pressure regulator, troubleshooting and adjustments.

Ignition System:

Ignition timing, coil, distributor, spark plugs, troubleshooting.

Transmission:

Manual and automatic transmission (4-speed and 5-speed manual, 3-speed and 4-speed automatic) overhaul, repair, adjustments, fluid specifications.

Drivetrain:

Driveshaft, universal joints, rear axle differential, troubleshooting and repair.

Suspension:

Front and rear suspension components, shock absorbers, springs, bushings, ball joints, steering knuckle, alignment specifications.

Steering:

Power steering system, steering box, tie rods, steering column, troubleshooting and repair.

Brakes:

Front and rear disc brakes, brake calipers, master cylinder, brake booster, brake fluid specifications, bleeding procedures, troubleshooting.

Electrical System:

Battery, charging system (alternator), starting system (starter motor), lighting system, fuses, relays, wiring diagrams, troubleshooting.

Cooling System:

Radiator, fan, water pump, thermostat, coolant specifications, troubleshooting.

Exhaust System:

Exhaust manifold, catalytic converter (if applicable for later years), muffler, pipes, troubleshooting.

Body And Chassis:

Body panels, doors, windows, interior trim, body repair, rust prevention.

Climate Control:

HVAC system, heater core, A/C system (if equipped), troubleshooting and repair.

Diagnostics:

Troubleshooting guides for common problems, symptom-based diagnosis.

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, tune-ups, fluid checks, belt inspections.

Troubleshooting:

Step-by-step troubleshooting for various system failures, including electrical, mechanical, and fuel issues.

Repair:

Detailed repair instructions for all major components, from minor adjustments to major overhauls.

Removal And Installation:

Comprehensive procedures for removing and installing engine components, transmission, suspension parts, body panels, etc.

Disassembly And Assembly:

Detailed step-by-step instructions for disassembling and reassembling major assemblies and components.

Adjustments:

Specific adjustment procedures for engine idle, fuel injection system, timing, brakes, etc.

Technical Specifications:

Torque specifications, wear limits, clearances, fluid capacities, electrical specifications.

Wiring Diagrams:

Includes detailed electrical system wiring diagrams for accurate troubleshooting and repair.

Technical Depth

Depth:

Comprehensive: Covers everything from basic maintenance and tune-ups to complete engine and transmission overhauls. Includes detailed diagnostic procedures and factory specifications.

Diagrams And Illustrations:

Profuse use of diagrams, exploded views, and photographs to visually explain complex procedures.

📊 Manual Specifications

File Format

Quality:

High-quality PDF, printable pages, clear text and legible images.

Print Quality

Page Printability:

Yes, all pages are printable for user convenience.

Binding Type

Digital Format:

Instant Download PDF

Paper Type

Digital Requirement:

Requires Adobe Reader or compatible PDF viewer.

Compatibility

Operating Systems:

Compatible with Windows, Mac, and Linux operating systems.

⚙️ Engine Specifications

Primary Engine

Engine Code:

Engine Type:

Inline-6 Cylinder, DOHC

Displacement:

2746 cc (2.8 Liters)

Performance

Horsepower Approx:

185 PS (182 bhp / 136 kW) at 5800 rpm (DIN)

Torque Approx:

234 Nm (173 lb-ft) at 4500 rpm (DIN)

Fuel System

Fuel Injection:

Bosch K-Jetronic Mechanical Fuel Injection

🔧 Transmission

Standard

Type Manual:

4-speed Manual (early models)

Optional

Type Automatic:

4-speed Automatic (optional)

Features

Fluid Type:

Refer to manual for specific ATF and manual transmission fluid types and capacities.

📐 Dimensions

Exterior

Wheelbase:

2794 mm (110 in)

Weights

Curb Weight Approx:

1500 - 1600 kg (3300 - 3530 lbs) depending on configuration

🛡️ Safety Features

Passive Features

Seatbelts:

Front seatbelts with pretensioners (later models), rear seatbelts.

Crumple Zones:

Engineered crumple zones for improved impact absorption.

💡 Technology Features

Infotainment

Audio System:

Original factory AM/FM radio with cassette player (options varied by market and trim).

Driver Assistance

Cruise Control:

Optional cruise control system available on some models.

Connectivity

Central Locking:

Vacuum-operated central locking system (common point of failure due to aging hoses).

🔧 Maintenance

Service Intervals

Oil Change Interval:

Refer to manual for specific interval, typically 5,000-10,000 km (3,000-6,000 miles) or 6-12 months.

Fluid Specifications

Engine Oil Type:

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

Coolant Type:

Glysantin or equivalent ethylene glycol-based coolant.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Known Issues

Common Failures:

While generally reliable, common issues can include rust (especially around wheel arches, door bottoms), vacuum leaks affecting central locking and climate control, aging fuel lines, and wear on suspension bushings.

Engine Reliability:

The M110 engine is known for its durability, but regular maintenance is crucial to prevent issues like valve guide wear and timing chain stretch over high mileage.

📚 Vehicle History

Brand Heritage

Manufacturer Reputation:

Mercedes-Benz is renowned for its engineering, durability, and luxury vehicles.

Model Evolution

W123 Era:

The W123 generation (1976-1985) is celebrated for its robust build quality, reliability, and conservative styling, earning it a reputation as one of the most dependable Mercedes-Benz models ever produced.

Production

Production Period:

1976-1985

🏆 Awards & Recognition

Recognitions

Reputation For Durability:

The W123 series is widely recognized in automotive circles for its exceptional build quality, longevity, and reliability, often cited as one of the most robust Mercedes-Benz models.