The Mercedes-Benz W114 and W115 series, produced from 1968 to 1976, represent the first generation of the company's mid-size luxury cars, succeeding the W110 Fintail. These vehicles are renowned for embodying Mercedes-Benz's legacy of engineering quality, durability, and reliable performance, with over 1.9 million units produced globally. The W114 designation was for models equipped with 6-cylinder engines, while the W115 referred to those with 4-cylinder engines, both sharing a common platform and body shell. Available in sedan and estate body styles, these cars offered a comfortable ride and introduced safety advancements for their era, including crumple zones and a dual-circuit hydraulic braking system, cementing their reputation as dependable and long-lasting automobiles.
This comprehensive workshop service repair manual provides extensive coverage for the Mercedes-Benz W114 and W115 models from 1967 to 1976. It is designed to assist do-it-yourself enthusiasts and professional mechanics alike in maintaining and repairing these vehicles. The manual details procedures for a wide array of systems, including engine service and repair, transmission, brakes, electrical systems, suspension, steering, cooling, fuel injection, and chassis. With step-by-step instructions, hundreds of detailed illustrations, and electrical wiring diagrams, this resource offers complete factory service information, enabling thorough diagnostics, troubleshooting, and repair for optimal vehicle performance and longevity.
Product Name:
Mercedes Benz W114 W115 1967-1976 Service Repair Manual Download
Generation:
First Generation
Chassis Code:
W114 (longer wheelbase, 6-cylinder engines) / W115 (standard wheelbase, 4-cylinder engines)
Target Audience:
Do-it-yourselfers and experienced mechanics
Value Proposition:
Inexpensive way to keep your vehicle working properly, comprehensive factory service information
Completeness:
Complete official full factory service repair manual
Accessibility:
Digital download, no shipping or waiting time
Covered Years:
1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976
Estimated Pages:
Hundreds (specific count not provided, but described as comprehensive)
Type:
Workshop Service Repair Manual
Format:
Digital Download (PDF)
Engine Service Repair:
Yes
Transmission Service Repair:
Yes
Heater Air Conditional:
Yes
Engine Control System:
Yes
Wiring Diagrams:
Yes, detailed wiring diagrams are included for ease of electrical system diagnosis and repair.
Periodic Lubrication:
Yes
Electrical Troubleshooting:
Yes
Depth:
Comprehensive (covers complete disassembly and reassembly, detailed diagnostics, troubleshooting, and repair procedures)
Illustrations:
Hundreds of photos and illustrations, detailed drawings, enlarged inset views
Instruction Format:
Step-by-step numbered instructions, detailed substeps, notes, cautions, and warnings
Printability:
Printable without any restriction (entire manual or selected pages)
Binding:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Software:
Adobe PDF Reader
Method:
Instant Download Link (after payment)
Engine Variants Covered:
Various 4-cylinder and 6-cylinder gasoline and diesel engines (specific displacements and codes would require further manual detail, but common engines include M114, M115, M116, OM615, OM616, OM617)
Typical Horsepower Range:
70 HP to 160 HP (depending on specific engine variant)
Fuel Delivery:
Carbureted (early models) and Fuel Injection (later models, e.g., Bosch K-Jetronic)
Fuel Type:
Gasoline (Petrol) and Diesel
Transmission Types:
4-speed and 5-speed Manual Transmissions, 3-speed and 4-speed Automatic Transmissions (e.g., 722.1, 722.3)
Optional Transmissions:
Automatic Transmission
Clutch Type:
Single dry plate clutch (manual)
Body Styles:
4-door Sedan, 5-door Estate (T-model)
Curb Weight Range:
Approximately 1,300 kg to 1,600 kg (depending on configuration)
Safety Features:
Despite its era, featured significant safety advancements for its time, including crumple zones, padded dashboard, safety steering column, and dual-circuit hydraulic brakes. (Specific crash test ratings from that era are less standardized than modern tests).
Brakes:
Front disc brakes, rear drum brakes (standard on most models); Optional power assisted brakes.
Body Structure:
Reinforced passenger safety cell, energy-absorbing steering column.
Original Audio:
Period-appropriate analog radio, often with a single speaker. Many owners upgrade to modern head units.
Driver Aids:
Minimal by modern standards. Primarily focused on mechanical reliability and driver control.
Connectivity Features:
None from the factory.
Oil Change Interval:
Typically every 5,000 - 10,000 km (3,000 - 6,000 miles) or annually, depending on engine and oil type used. Manual will provide specific intervals.
Tune Up Interval:
Spark plug replacement, ignition timing adjustments, filter changes typically recommended at intervals such as 15,000 - 20,000 km (9,000 - 12,000 miles).
Engine Oil Type:
API SF/CD or higher recommended. Viscosity grades like SAE 10W-40 or 15W-40 are common for general use, with manual specifying exact grades based on climate.
Coolant:
Ethylene glycol-based antifreeze mixed with distilled water. Typically a 50/50 mixture. Manual will specify Mercedes-Benz approved coolant.
Brake Fluid:
DOT 3 or DOT 4 (Manual will specify exact type and MB approval number).
Transmission Fluid:
For automatic transmissions: MB 236.1 or 236.2 specification (e.g., Dexron II). For manual transmissions: GL-4 gear oil.
Common Problems:
Rust susceptibility (especially around wheel arches, door bottoms, and trunk), aging rubber components (hoses, bushings), potential for vacuum leak issues in later fuel injected models, carburetor tuning challenges on older models.
Diesel Engines:
Glow plug system reliability, injector pump maintenance. OM617 diesel is particularly robust.
Mercedes Benz Reputation:
Renowned for engineering quality, durability, and luxury. The W114/W115 continued this legacy.
W114 W115 Designation:
The W114 was the designation for models with 6-cylinder engines, while the W115 was for models with 4-cylinder engines. Both shared a common platform and body shell design. Replaced the W110 Fintail.
Production Period:
1968-1976 (with minor updates and facelifts during this period)
Production Volume:
Over 1.9 million units produced globally, making it a very successful model for Mercedes-Benz.
Automotive Journalism Praise:
Widely praised by automotive press for its robust construction, comfortable ride, and dependable engineering, establishing Mercedes-Benz's reputation for long-term value.
Reliability Perception:
Considered one of the most reliable and durable Mercedes-Benz models ever produced, especially the diesel variants.
