This comprehensive Mercedes Benz W114 W115 service repair manual covers all models produced from 1967 to 1976, including the 168 series. It provides detailed step-by-step instructions and illustrations for a wide range of repair and maintenance procedures, making it an invaluable resource for both experienced mechanics and DIY enthusiasts.

The manual features detailed substeps for each procedure, along with notes, cautions, and warnings to highlight critical information. Numbered instructions guide you through every repair process, and bold figure numbers help you quickly locate relevant illustrations. Enlarged insets allow you to examine parts in detail, and a numbered table of contents ensures you can find the information you need quickly.

This manual comprehensively covers all aspects of the W114 W115, including:

* **General Maintenance:** Routine checks, fluid changes, and preventative measures to keep your car in top condition.
* **Troubleshooting:** Identify and resolve common issues with your vehicle.
* **Engine Service & Repair:** Detailed instructions for servicing and repairing the engine, including fuel injection, fuel system, and emission systems.
* **Transmission Service & Repair:** Learn how to maintain and repair your transmission for smooth and efficient gear changes.
* **Brake System:** Stay safe on the road by learning how to diagnose and fix issues with your brake system.
* **Electrical System:** Understand the workings of your vehicle's electrical system, including wiring diagrams, troubleshooting procedures, and repair instructions.
* **Suspension:** Ensure a smooth and comfortable ride by learning how to maintain and repair your suspension components.
* **Steering:** Keep control of your vehicle with the knowledge to service and repair your steering system.
* **Cooling System:** Learn how to maintain and repair your cooling system to prevent overheating and ensure optimal engine performance.
* **Heater & Air Conditioning:** Keep comfortable in all weather conditions by understanding how to service and repair your heating and air conditioning system.
* **Chassis & Body:** Learn how to maintain and repair the structural components of your vehicle.
* **Restraint System:** Ensure the safety of yourself and your passengers by familiarizing yourself with your vehicle's restraint system.
* **Interior:** Learn how to repair and maintain the interior components of your vehicle, from upholstery to dashboard controls.
* **Differential & Drive:** Understand the workings of your vehicle's drivetrain and learn how to service and repair its components.
* **Axle:** Maintain and repair your axle for optimal performance and handling.

With this comprehensive manual, you can confidently tackle a wide range of repairs and maintenance tasks for your Mercedes Benz W114 W115, saving you time and money in the long run.

The Mercedes-Benz W114/W115, often referred to as the "Stroke Eight" due to its inline-six engine, represented a significant shift for the German marque in the late 1960s and early 1970s. Introduced in 1967, these models marked the company's first foray into the mid-size luxury sedan segment, aiming to fill the gap between the smaller W110 and the larger W108/W109 models. The W114/W115 series was a departure from the more traditional styling of earlier Mercedes models, adopting a more modern and sleek aesthetic. The distinctive, boxy design was characterized by a low-slung roofline, a long, pronounced hood, and a wide, imposing grille, showcasing a newfound sense of sophistication and sportiness. This shift in design language marked a move away from the more conservative styling of previous generations, positioning Mercedes-Benz as a brand that could offer both luxury and performance.

Underneath the elegant exterior, the W114/W115 models housed a range of robust and reliable inline-six engines, ranging in displacement from 2.0 to 2.8 liters. These engines were known for their smooth operation, power delivery, and durability, underpinning the car's reputation for quality and longevity. The series also introduced a range of innovative features for its time, including a fully independent suspension, disc brakes on all four wheels, and comprehensive safety features like crumple zones. These advancements were aimed at providing a highly comfortable and safe driving experience, further solidifying Mercedes-Benz's position as a leader in automotive engineering and safety. The W114/W115 models proved to be highly successful, earning a reputation for reliability, durability, and comfort. They were widely praised for their driving experience, styling, and build quality, becoming a popular choice for discerning drivers seeking a blend of luxury and performance in a mid-size package.