The 1977-1981 Mercedes-Benz W123 Factory Service Repair Workshop Manual provides comprehensive information for maintaining, servicing, diagnosing, and repairing your Mercedes-Benz W123. This manual covers all models and engines, including the 230, 280 E, and 280 CE, with engine sizes of 2.3L, 2.8L (Gasoline), and 2.0L. It features detailed step-by-step instructions and highly detailed exploded pictures and diagrams to ensure you complete each task correctly and efficiently.

The manual encompasses a wide range of repair procedures, from general technical data and engine components like the crankshaft, engine timing, and carburetor to advanced systems such as mechanical gasoline injection, ignition, air intake, belt drive, emission, and electrical systems. It also delves into components like the engine lubrication and cooling systems, engine suspension, fuel and exhaust systems, and wiring diagrams.

Beyond the engine, the manual covers HVAC systems, automatic climate control, suspension, axles, wheels, propeller shafts, brakes, steering, windows, doors, interior equipment, electrical equipment and instruments, sliding roofs, central locking systems, the electrical system of the body, seats, and seat belts. This manual is an indispensable resource for anyone seeking to maintain and repair their Mercedes-Benz W123, providing the same level of detail and information that a mechanic would use.

The 1977-1981 Mercedes-Benz W123 is a legendary car, renowned for its robust engineering, timeless elegance, and unparalleled durability. It was the successor to the W114/115 series, and introduced a new level of sophistication and comfort to the mid-size sedan segment. The W123 was available in a wide range of body styles, including sedans, coupes, wagons, and even a pickup truck. Powertrain options ranged from frugal diesel engines to powerful gasoline units, offering a balance between economy and performance.

Despite its age, the W123 remains highly sought after by enthusiasts and collectors alike. Its solid construction and simple design make it a reliable and easy-to-maintain car. The W123's cabin is spacious and well-appointed, with comfortable seats and a plethora of amenities for its time. The car's design was forward-thinking for its era, with features such as crumple zones and safety belts, contributing to its reputation for safety. The W123's enduring popularity is a testament to its exceptional engineering and timeless appeal. Its combination of practicality, refinement, and durability has secured its place as a true icon of automotive history. The 1977-1981 Mercedes-Benz W123 is a classic car that continues to inspire admiration and respect, offering a glimpse into an era of automotive excellence.