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

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280CE Chassis Code: W123 Body Style: Coupé (2-door) Generation Generation Code: First Generation Codes Engine Code Example: M110 👋 Introduction Market Position...

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Taper: Car

Distributeur:

UGS: 390004

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

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

W123 280CE

Chassis Code:

Body Style:

Coupé (2-door)

Generation

Generation Code:

First Generation

Codes

Engine Code Example:

👋 Introduction

Market Position

Positioning:

Premium mid-size luxury coupé known for build quality, comfort, and durability

Competitive Analysis

Competitors:

BMW 6 Series, Audi 5+2, Jaguar XJ-S (though often positioned slightly higher)

Key Features

Design Philosophy:

Robust engineering, classic Mercedes-Benz styling, focus on passenger safety and comfort

Target Audience:

Discerning buyers valuing luxury, performance, and long-term reliability

📋 Manual Details

Coverage Areas

Coverage Years:

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

Specific Model Variant:

280CE

Page Count

Total Pages:

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

File Format:

Accessibility:

Instant Download

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, diagnostics, tuning, fuel injection, ignition, cooling, lubrication, exhaust

Transmission:

Automatic transmission (4-speed) service, repair, adjustments, fluid specifications

Drivetrain:

Rear axle, driveshaft, CV joints, wheel bearings

Suspension:

Front and rear suspension components, shock absorbers, springs, bushings, alignment specifications

Steering:

Power steering system service, pump, gearbox, steering linkages

Brakes:

Hydraulic system, brake discs, calipers, pads, lines, parking brake, fluid specifications

Electrical System:

Battery, alternator, starter, lighting, wiring diagrams, fuses, relays, instrumentation

Bodywork:

Body panel repair, doors, windows, locks, interior trim, seals

Climate Control:

Heating and ventilation system, A/C system service (where applicable)

Fuel System:

Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator

Exhaust System:

Catalytic converter (from late 70s/early 80s), mufflers, exhaust manifold, lambda sensor testing (if equipped)

Cooling System:

Radiator, water pump, thermostat, heater core, hoses, fan clutch

Ignition System:

Distributor, spark plugs, ignition coils, ignition control module

Lubrication System:

Oil pump, oil filter, oil pressure sender, oil passages

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks, lubrication

Troubleshooting:

Diagnostic procedures for common and uncommon issues, symptom analysis

Repair:

Step-by-step repair instructions for all major vehicle systems

Disassembly Assembly:

Detailed procedures for removing and reinstalling components

Adjustments:

Carburetor/fuel injection adjustments, ignition timing, valve clearances, brake adjustments

Technical Specifications:

Torque values, wear limits, measurement specifications, electrical resistance values

Troubleshooting Charts:

Includes specific troubleshooting charts for common drivability and electrical issues

Component Identification:

Clear identification of all components and their locations within the vehicle

Technical Depth

Depth:

Comprehensive, covering from basic maintenance to complex component overhaul and diagnostics

Detail Level:

Includes pictorial diagrams, exploded views, and step-by-step instructions

Special Tools:

References special tool numbers and provides guidance on their usage

Diagnostics:

Detailed diagnostic procedures for engine management, fuel injection, and electrical systems

📊 Manual Specifications

File Format

Readability:

High-resolution PDF, zoomable

Print Quality

Printability:

Fully printable

Image Quality:

Clear, detailed illustrations, drawings, and photos

Binding Type

Digital Format:

Digital PDF download

Paper Type

Physical Equivalent:

Equivalent to a professional workshop manual

Compatibility

Operating Systems:

Windows, Mac, Linux OS

Required Software:

Adobe Reader

⚙️ Engine Specifications

Primary Engine

Engine Code:

M110 (984/985 variants for 280CE)

Engine Type:

Inline-6 Cylinder, DOHC

Displacement:

2746 cc (2.7 Liters)

Bore X Stroke:

86.0 mm x 78.7 mm

Compression Ratio:

8.0:1 or 9.0:1 (depending on market/specific variant)

Performance

Horsepower:

177 hp (130 kW) at 5500 rpm (DIN) / 185 hp (136 kW) at 5500 rpm (SAE net, later models)

Torque:

235 Nm (173 lb-ft) at 4000 rpm (DIN) / 240 Nm (177 lb-ft) at 4000 rpm (SAE net, later models)

Fuel System

Fuel Delivery:

Bosch K-Jetronic (CIS) Continuous Injection System

Fuel Type:

Unleaded gasoline (Premium Octane)

🔧 Transmission

Standard

Transmission Type:

4-speed automatic (e.g., 722.1)

Optional

Transmission Type:

4-speed or 5-speed manual (less common on CE models, more on sedan/coupe models like 280E)

Features

Automatic Features:

Torque converter, hydraulic control

📐 Dimensions

Exterior

Length:

approx. 4725 mm (186.0 in)

Width:

approx. 1790 mm (70.5 in)

Height:

approx. 1440 mm (56.7 in)

Wheelbase:

approx. 2795 mm (110.0 in)

Weights

Curb Weight:

approx. 1450 - 1550 kg (3197 - 3417 lbs)

🛡️ Safety Features

Ratings

Design Focus:

High level of passive safety for its era, crumple zones, strong safety cell

Active Features

Braking System:

Four-wheel disc brakes (front ventilated)

Passive Features

Airbags:

Not standard on early models, optional later

Seatbelts:

Standard front seatbelts, optional rear seatbelts

Construction:

Reinforced passenger compartment

💡 Technology Features

Infotainment

Audio System:

Period-correct Becker radios, often with cassette players, optional amplifier

Driver Assistance

Cruise Control:

Optional cruise control (Tempomat) available on some models

Climate Control:

Optional automatic climate control (Thermatic) on higher-spec models

Connectivity

Phone Integration:

Not applicable for the era

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000 - 15,000 km (6,000 - 9,000 miles) or 12 months, depending on driving conditions and oil used (refer to manual for exact specs)

Major Service:

Recommended at higher mileages (e.g., 80,000 - 100,000 km) for comprehensive inspection and component renewal

Fluid Specifications

Engine Oil:

API SF/SG rated, SAE 20W-50 or 10W-40 (depending on climate and temperature, refer to manual for precise MB specifications)

Coolant:

Mercedes-Benz approved antifreeze/coolant mixture (e.g., G05 or similar phosphate-free coolant), 50/50 mix with distilled water

Brake Fluid:

DOT 3 or DOT 4, low viscosity

Transmission Fluid:

Dexron III (or equivalent MB approved ATF for the 722.1 gearbox)

Power Steering Fluid:

Mercedes-Benz Power Steering Fluid or equivalent Dexron II/III type fluid

Known Issues

Common Wear Items:

Ball joints, tie rod ends, control arm bushings, fuel accumulator (K-Jetronic), vacuum hoses, idle control valve

Electrical Gremlins:

Aging wiring harnesses, particularly in the engine bay, can lead to intermittent faults

Rust:

Susceptible to rust in common areas like wheel wells, rocker panels, and around window seals

📚 Vehicle History

Brand Heritage

Heritage:

Mercedes-Benz: Decades of automotive engineering excellence and luxury vehicle manufacturing

Model Evolution

W123 Introduction:

Launched in 1975 as a successor to the W114/W115 series

Ce Variant Introduction:

The Coupé (CE) variant was introduced in 1977, offering a sportier profile

Facelifts:

Minor styling updates and technical improvements throughout its production run (e.g., 'small facelift' around 1979/1980, 'large facelift' around 1982)

Production

Production Years:

W123 series: 1975-1985

Manufacturing Location:

Germany (various Mercedes-Benz plants)

🏆 Awards & Recognition

Recognitions

Reputation:

Widely regarded as one of the most robust and durable Mercedes-Benz models ever produced, earning the nickname 'The Tank'