Mercedes W114 W115 Service Repair Manual

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Mots clés: Car Cars Mercedes W114 W115

Variantes de produits

Description

This manual covers the Mercedes-Benz W114 and W115 models, known collectively as the Stroke-8, produced between 1968 and 1976. These vehicles represented a significant expansion for Mercedes-Benz, offering a blend of robust engineering, comfort, and accessible luxury that appealed to a broader market. Available as sedans and coupes (W114), and sedans (W115), these cars were renowned for their durable construction, smooth ride quality, and a range of reliable gasoline and diesel engines. The W114/W115 series established Mercedes-Benz's reputation for quality and longevity in a more compact and widely attainable package, making them a popular choice globally and contributing to the brand's significant market growth. This comprehensive English language service and repair manual provides detailed information for maintaining and repairing your Mercedes-Benz W114/W115. It covers all major systems, including engine overhaul for gasoline and diesel variants, fuel, cooling, ignition, transmission, drivetrain, suspension, steering, brakes, and the 12V electrical system. You will find step-by-step instructions for maintenance tasks, troubleshooting diagnostics, and component repair, along with detailed diagrams, specifications, and torque values. This resource is designed to assist owners, mechanics, and technicians in keeping these classic vehicles in optimal condition.

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

W114/W115

Codes

Chassis Codes:

W114 (Sedan, Coupe), W115 (Sedan)

Generation

Generation Name:

Stroke-8

Production Years Covered:

1968-1976

👋 Introduction

Market Position

Target Audience:

Enthusiasts, mechanics, owners seeking in-depth technical knowledge

Competitive Analysis

Information Source:

Directly sourced from manufacturer's technical documentation

Key Features

Accessibility:

Instant download for immediate use

Content Quality:

Reputable source of technical data, diagrams, and procedures

Utility:

Facilitates comprehensive maintenance and repair

📋 Manual Details

Coverage Areas

Language:

English

Geographic Focus:

Global (specifications may vary by region)

Page Count

Estimated Page Count:

Extensive (Digital format implies comprehensive content)

Manual Type

Type:

Service and Repair Manual

Format

Format Type:

Digital Download (PDF)

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, troubleshooting, diagnostics for gasoline and diesel variants

Fuel System:

Carburetor (Zenith, Solex) and Diesel Injection System (Bosch) service and tuning

Cooling System:

Radiator, thermostat, water pump, hoses, and coolant specifications

Ignition System:

Distributor, ignition coil, spark plugs, timing adjustment

Transmission:

Manual (4 and 5-speed) and Automatic (3-speed) transmission overhaul, adjustment, and fluid specifications

Drivetrain:

Clutch, driveshaft, rear axle differential service and repair

Suspension:

Front independent suspension (double wishbone), rear semi-trailing arm suspension, shock absorbers, springs, bushings

Steering:

Power steering system service, steering gear and linkages

Brakes:

Front disc, rear drum brakes; hydraulic system, brake fluid specifications, bleeding procedures

Electrical System:

12V electrical system, battery, alternator, starter motor, lighting, wiring diagrams, fuse panel

Bodywork:

Body panel removal and installation, rust repair guidance, door mechanisms, trim

Heating And Ventilation:

HVAC system components and service

Clutch System:

Mechanical clutch operation, pressure plate, clutch disc, release bearing

Exhaust System:

Exhaust manifold, catalytic converter (later models), mufflers, pipes

Procedures Included

Maintenance:

Scheduled maintenance tasks, fluid changes, filter replacements, lubrication

Troubleshooting:

Diagnostic charts and symptom-based problem solving

Repair:

Step-by-step instructions for component disassembly, repair, and reassembly

Diagnostics:

Detailed procedures for identifying and rectifying common faults

Assembly Disassembly:

Comprehensive guides for all major vehicle components

Painting Refinishing:

General guidance on products and supplies, potential for bodywork and paint repair

Collision Repair Guidance:

Information relevant to assessing and repairing damage from collisions

Technical Depth

Depth:

Comprehensive, suitable for professional mechanics and experienced DIY enthusiasts

Detail Level:

Includes detailed diagrams, exploded views, torque specifications, and clearances

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely searchable text content due to digital nature

Print Quality

Print Capability:

Printable by section or in full

Binding Type

Binding:

N/A (Digital Product)

Paper Type

Paper Quality:

N/A (Digital Product)

⚙️ Engine Specifications

Primary Engine

Engine Families:

M115 (4-cylinder gasoline), M116 (V8 gasoline - W114 350SE/SEL), M117 (V8 gasoline - W114 350SE/SEL), OM615 (4-cylinder diesel), OM616 (5-cylinder diesel)

Performance

Typical Horsepower Range:

70 hp (diesel) to 180 hp (V8 gasoline, depending on variant)

Typical Torque Range:

130 Nm (diesel) to 290 Nm (V8 gasoline, depending on variant)

Fuel System

Gasoline Induction:

Single or dual downdraft carburetors (e.g., Solex 32/32 DIDTA, Zenith 35/40 INAT)

Diesel Induction:

Bosch inline injection pump

Fluid Requirements

Engine Oil Specification:

API SE/CD or equivalent (e.g., SAE 10W-40 or 20W-50 depending on climate)

🔧 Transmission

Standard

Manual Options:

4-speed manual, 5-speed manual (late models)

Optional

Automatic Options:

3-speed automatic (e.g., ZF 3HP12, later Mercedes 722.1)

Features

Fluid Type:

Automatic Transmission Fluid (ATF) Type T or Dexron II (for automatic transmissions)

📐 Dimensions

Exterior

Wheelbase:

W114 Sedan/Coupe: 2750 mm (108.3 in); W115 Sedan: 2750 mm (108.3 in)

Overall Length:

W114 Sedan: ~4650 mm (183 in); W115 Sedan: ~4650 mm (183 in)

Weights

Curb Weight:

Approx. 1350-1550 kg (2976-3417 lbs) depending on engine and equipment

🛡️ Safety Features

Ratings

Crash Test Era:

Pre-modern crash testing standards; focus on structural integrity

Active Features

Braking System:

Front disc brakes, rear drum brakes; often with servo assistance

Passive Features

Body Construction:

Reinforced safety cell, crumple zones (early design)

Seat Belts:

Standard, often front lap and shoulder belts; rear lap belts

💡 Technology Features

Infotainment

Radio Options:

Period-correct AM/FM radios, often with analog tuning

Driver Assistance

Advanced Features:

Limited by era; focus on passive safety and robust mechanical systems

Connectivity

Connectivity Options:

N/A (Pre-digital era)

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 5,000-10,000 km (3,000-6,000 miles) or annually, depending on usage

Tune Up Interval:

Spark plugs, ignition points, and timing checks every 15,000-25,000 km (9,000-15,000 miles)

Valve Adjustment:

Recommended every 25,000-50,000 km (15,000-30,000 miles)

Fluid Specifications

Coolant Type:

Ethylene glycol based coolant (e.g., Mercedes-Benz Coolant)

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid

Known Issues

Common Wear Items:

Ball joints, tie rod ends, control arm bushings, exhaust components, fuel lines

Diesel Engine Concerns:

Glow plug system issues, injector pump seals, pre-combustion chamber carbon buildup

Body Corrosion:

Prone to rust in common areas: wheel arches, sills, door bottoms, battery tray, trunk floor

📚 Vehicle History

Brand Heritage

Manufacturer Legacy:

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

Model Evolution

Introduction Context:

Replaced the W110 ('Fintail') range, introduced as a more affordable, smaller Mercedes-Benz model than the S-Class

Production

Manufacturing Locations:

Germany, South Africa, other licensed facilities

Production Volume:

Over 1.8 million units combined (W114/W115), establishing Mercedes-Benz in a wider market segment

🏆 Awards & Recognition

Recognitions

Market Impact:

Recognized for its blend of comfort, durability, and accessible luxury, significantly expanding Mercedes-Benz's customer base

Ratings

Build Quality Reputation:

High praise for build quality and longevity