Mercedes-benz 280E 1976-1985 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: 280E Generation Model Generation: W123 Codes Chassis Code: W123 👋 Introduction Market Position Positioning: Premium mid-size luxury sedan, renowned for build quality, comfort,...

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Taper: Car

Distributeur:

UGS: 502597

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

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

Generation

Model Generation:

Codes

Chassis Code:

👋 Introduction

Market Position

Positioning:

Premium mid-size luxury sedan, renowned for build quality, comfort, and durability.

Competitive Analysis

Competitors:

BMW 5 Series (E28), Audi 100, Volvo 240/740

Key Features

Build Quality:

Exceptional German engineering and robust construction.

Comfort:

Supple ride, comfortable seating, and quiet cabin.

Reliability:

Known for longevity and ability to withstand high mileage with proper maintenance.

📋 Manual Details

Coverage Areas

Years Covered:

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

Page Count

Estimated Page Count:

Approximately 1200+

Manual Type

Type:

Factory Service Repair Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Engine:

M110 2.8L Inline-6 Cylinder (DOHC)

Engine Management:

Bosch K-Jetronic Fuel Injection

Transmission:

4-speed Manual, 4-speed Automatic (4G-Tronic)

Drivetrain:

Rear-Wheel Drive

Suspension:

Independent Front (Double Wishbone), Independent Rear (Multi-Link)

Brakes:

Front Ventilated Discs, Rear Discs (Power Assisted)

Steering:

Power Assisted Recirculating Ball

Electrical:

12V System, Charging System, Ignition, Lighting, Instrumentation, Accessories

Bodywork:

Chassis, Body Panels, Doors, Windows, Trim, HVAC System

Procedures Included

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, lubrication

Troubleshooting:

Diagnostic procedures, symptom-based troubleshooting, electrical fault finding

Repair:

Engine overhaul, transmission rebuild, brake system repair, suspension component replacement

Diagnostics:

Component testing, pressure testing, electrical continuity checks

Specifications:

Torque specifications, clearances, timing, fluid capacities

Technical Depth

Depth:

Comprehensive (from basic maintenance to complete engine and transmission overhauls)

📊 Manual Specifications

File Format

File Type:

Searchability:

Fully searchable text

Printability:

Printable pages

Print Quality

Image Resolution:

High-resolution diagrams and illustrations

Binding Type

Binding:

N/A (Digital)

Paper Type

Paper:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine

Engine Code:

M110.984 (US/Canada), M110.987 (Europe)

Engine Type:

Naturally Aspirated, SOHC 24-Valve (early models), DOHC 24-Valve (later models)

Displacement:

2.8 Liters (2799 cc)

Bore X Stroke:

86.0 mm x 80.25 mm

Compression Ratio:

8.2:1 or 8.7:1 (depending on market/model year)

Performance

Horsepower SAE Net:

145-155 hp @ 5250-5500 RPM (approx.)

Torque SAE Net:

165-175 lb-ft @ 3000-3500 RPM (approx.)

Fuel System

Fuel Injection:

Bosch K-Jetronic CIS (Continuous Injection System)

Fuel Type:

Unleaded Gasoline (Premium Recommended)

Lubrication

Oil Capacity:

7.5 Liters (approx. 8 US Quarts)

Recommended Oil Viscosity:

SAE 15W-40 or 10W-40 (depending on climate)

🔧 Transmission

Standard

Standard Transmission:

4-speed Manual

Optional

Optional Transmission:

4-speed Automatic (4G-Tronic)

Features

Automatic Transmission Features:

Hydraulic torque converter, selective gear engagement, torque converter lock-up (later models)

Fluid Specifications

Automatic Transmission Fluid Type:

Dexron III/Mercon (or equivalent MB specification)

📐 Dimensions

Exterior

Length:

4725 mm (186.0 in)

Width:

1790 mm (70.5 in)

Height:

1430 mm (56.3 in)

Wheelbase:

2790 mm (109.8 in)

Weights

Curb Weight:

1450 - 1550 kg (approx.)

Gross Vehicle Weight Rating:

Approximately 2000 kg

Cargo

Trunk Volume:

560 Liters (approx.)

🛡️ Safety Features

Ratings

Federal Motor Vehicle Safety Standards Compliance:

Designed to meet 1970s/early 1980s US safety standards.

Active Features

Braking System:

Four-wheel power disc brakes with dual-circuit hydraulic system.

Passive Features

Seatbelts:

Three-point inertia-reel seatbelts in front, lap belts in rear.

Steering Column:

Collapsible steering column for improved occupant protection.

Body Structure:

Reinforced passenger compartment, crumple zones.

💡 Technology Features

Infotainment

Audio System:

Factory-installed AM/FM radio with optional cassette player. Upgrades common.

Driver Assistance

Cruise Control:

Optional vacuum-operated cruise control on some models.

Connectivity

Bluetooth Connectivity:

Not originally equipped; aftermarket solutions available.

🔧 Maintenance

Service Intervals

Oil And Filter Change Interval:

Every 10,000 km (6,200 miles) or annually.

Air Filter Replacement Interval:

Every 20,000 km (12,400 miles) or annually.

Spark Plug Replacement Interval:

Every 40,000 km (24,800 miles) or as needed.

Coolant Flush Interval:

Every 2 years or 40,000 km (24,800 miles).

Valve Adjustment Interval:

Every 40,000 km (24,800 miles) for M110 engine (requires expert inspection).

Fluid Specifications

Coolant Type:

Mercedes-Benz Specification 325.0 (Glysantin G48 or equivalent blue/green silicate-based coolant)

Brake Fluid Type:

DOT 3 or DOT 4 (Low Viscosity)

Power Steering Fluid Type:

MB Specification 236.3 (ATF Type A or equivalent)

Known Issues

Common Wear Items:

Fuel pump, fuel accumulators, vacuum lines, fuel injectors, ignition components, suspension bushings, exhaust system.

Corrosion Prone Areas:

Wheel arches, rocker panels, door bottoms, jacking points, trunk floor.

Electrical Issues:

Wiring harness degradation, instrument cluster issues, aging relays and switches.

K Jetronic Diagnosis:

Requires specialized knowledge for fuel pressure and mixture adjustments.

📚 Vehicle History

Brand Heritage

Mercedes Benz Legacy:

Globally recognized for engineering excellence, safety, and luxury since the late 19th century.

Model Evolution

W123 Introduction:

Launched in 1976 as the successor to the W114/W115 series, establishing new benchmarks for durability and refinement.

W123 Body Styles:

Offered as Sedan (Saloon), Coupe, Estate (Wagon), and Limousine.

W123 Updates:

Received minor facelift and feature updates throughout its production run, including improved aerodynamics and interior refinements.

Production

Production Years:

1976-1985

Manufacturing Locations:

Germany (main), various international assembly plants.

🏆 Awards & Recognition

Recognitions

Industry Acclaim:

The W123 series is widely praised by automotive journalists and enthusiasts for its durability and engineering prowess.

Collector Status:

Highly sought after by classic car collectors for its timeless design and robust mechanicals.