The Mercedes-Benz W114/W115 Workshop Service Repair Manual is your comprehensive guide to maintaining and repairing your classic Mercedes-Benz. Covering production years 1968 through 1976, this manual includes detailed information for all models and engine types, including the 220, 220D, 230, 240D, 250, 250C, 280, 280C, and 300D.

This manual is a valuable resource for both professional mechanics and DIY enthusiasts. Its detailed illustrations, diagrams, specifications, and wiring schematics provide clear instructions for every repair, from simple maintenance tasks to complex engine overhauls.

The manual covers a wide range of topics, including:

* **Engine Overhaul and Rebuilding:** Detailed instructions for rebuilding your engine, including disassembly, inspection, repair, and reassembly.
* **Brakes:** Learn how to service and repair your brake system, including adjustments, bleeding, and replacement of components.
* **Sunroof:** Find instructions for maintaining and repairing your sunroof mechanism.
* **Timing Belt Replacement:** Step-by-step instructions for replacing the timing belt, a crucial maintenance task for your engine.
* **Trouble Codes:** Understand common trouble codes and their corresponding troubleshooting steps.
* **Wiring Diagrams:** Comprehensive wiring diagrams to help you diagnose electrical issues and trace circuits.
* **Troubleshooting and Diagnostics:** Detailed troubleshooting guides for a wide range of common problems.
* **Computer Diagnostic Trouble Tree Charts:** Learn how to use the computer diagnostic system to pinpoint issues and guide your repairs.
* **Engine Performance:** Find information on optimizing engine performance and diagnosing issues related to fuel consumption, power, and emissions.
* **Front End and Alignment Procedures and Specifications:** Detailed instructions for adjusting suspension and alignment settings, including specifications for proper adjustments.
* **Suspension:** Learn how to service and repair your suspension system, including shocks, struts, springs, and control arms.
* **Transmission Removal and Installation:** Step-by-step instructions for removing and reinstalling your transmission.
* **Air Conditioning Service and Capacities:** Detailed information on servicing and recharging your air conditioning system, including refrigerant capacities.
* **Transmission in Car Servicing:** Learn how to service your transmission without removing it from the vehicle.
* **Computer Diagnostic Codes:** Understand the meaning of computer diagnostic codes and how to interpret them.
* **Firing Orders:** Find the correct firing order for each engine type.
* **Detailed Specifications on Every Model Covered:** Comprehensive specifications for every model, including engine sizes, gear ratios, and suspension components.
* **Factory Maintenance Schedules and Charts:** Detailed maintenance schedules and charts to help you keep your vehicle in top condition.
* **Serpentine Belt Routings with Diagrams:** Clear diagrams showing the correct routing for your serpentine belt.
* **Timing Belt Service Procedures:** Detailed instructions for servicing and replacing your timing belt.
* **Brake Servicing Procedures:** Comprehensive instructions for servicing your brake system, including adjustments, bleeding, and replacement of components.
* **Driving Concerns:** Identify and troubleshoot common driving concerns like unusual noises, vibrations, and performance issues.
* **Complete Torque Specifications:** Accurate torque specifications for every bolt and nut on your vehicle.
* **U-Joint and CV-Joint Service Procedures:** Learn how to service and repair your universal joints and constant velocity joints.
* **Repair Procedures:** Step-by-step instructions for repairing a wide range of components and systems.
* **Complete Wiring Diagrams:** Detailed wiring diagrams for all electrical systems.
* **Hundreds of Illustrations:** Clear and detailed illustrations to guide you through each step of the repair process.
* **Vacuum Diagrams:** Complete vacuum diagrams to help you diagnose and troubleshoot vacuum-related problems.

This manual provides the information you need to diagnose and repair any problem you encounter on your Mercedes-Benz W114/W115.

The Mercedes-Benz W114/W115, fondly known as the "Stroke Eight" due to its signature 2.5-liter straight-eight engine, was a revolutionary mid-size car that redefined Mercedes-Benz's approach to the market. Introduced in 1968, it replaced the aging W110 "Fintail" series and ushered in a new era of elegance and sophistication for the German automaker. This model marked a significant departure from the traditional, boxy designs of its predecessors, embracing a more streamlined and modern aesthetic. The W114/W115 featured a distinctive, wedge-shaped front end with rounded headlights, flowing lines along its bodywork, and a sloping rear window, creating a visual harmony that was both elegant and aerodynamic. This design language would influence future Mercedes-Benz models and become synonymous with the brand's iconic design philosophy. The W114/W115 was available in a variety of body styles, including sedans, coupes, and estates, catering to a diverse range of customer needs. Its interior showcased a refined and sophisticated environment, featuring high-quality materials and meticulous craftsmanship. Comfort and practicality were paramount, with spacious cabins and thoughtfully designed features.

Under the hood, the W114/W115 offered a range of powerful and refined engines, including the iconic 2.5-liter straight-eight, which delivered exceptional smoothness and performance. The car also introduced advanced safety features for the time, such as crumple zones, a robust chassis, and integrated seat belts, exemplifying Mercedes-Benz's commitment to safety engineering. In addition to its technological innovations, the W114/W115 embodied the traditional Mercedes-Benz values of quality, durability, and reliability. These qualities made it an enduring symbol of automotive excellence and contributed to its enduring popularity both in Europe and around the world. The W114/W115 proved to be a watershed moment for Mercedes-Benz, establishing a new standard for the mid-size luxury market and setting the stage for the brand's continued success in the years to come. Its elegant design, refined engineering, and enduring quality continue to captivate enthusiasts and collectors, solidifying its legacy as a true icon of automotive history.