This comprehensive service repair manual provides in-depth information for maintaining, assembling, disassembling, and servicing Komatsu GD555-3A, GD655-3A, and GD675-3A motor graders. It caters to machines with serial numbers 10001 and up. The manual covers critical components including the SA6D102E-1 or SAA6D102E-2 engines for the GD555-3A, and the SA6D114E-1 or SAA6D114E-2 engines for the GD655-3A and GD675-3A models. While the manual provides detailed information on these specific engines, it recommends referring to the separate 102 Series Engine Shop Manual and 114 Series Engine Shop Manual for comprehensive engine-related information.

This manual contains detailed specifications, diagrams, and real photographs to guide you through every step of repair, diagnosis, servicing, technical maintenance, and troubleshooting procedures. It covers various aspects of the machine, including:

* **General Information:** This section provides an overview of the machine's operation and functions.
* **Structure, Function and Maintenance Standards:** This section details the structure and function of the motor grader and outlines standard maintenance practices.
* **Testing and Adjusting:** This section provides guidance on testing and adjusting various components and systems.
* **Disassembly and Assembly:** This section offers step-by-step instructions for disassembling and reassembling components.
* **Other Information:** The manual includes additional information and resources relevant to the motor grader.

This comprehensive service repair manual serves as a valuable resource for anyone working on Komatsu GD555-3A, GD655-3A, and GD675-3A motor graders. It empowers you to confidently diagnose and repair your machine, saving you time and money.

The Komatsu GD555-3A, GD655-3A, and GD675-3A motor graders are heavy-duty construction machines designed for a wide range of applications, including road construction, site preparation, and material handling. These models are renowned for their robust build quality, powerful performance, and advanced operating features. The GD555-3A is the smallest of the three, while the GD675-3A offers the most power and capacity. They share a common design philosophy, utilizing a powerful Komatsu engine, a rugged undercarriage, and a versatile blade system. All three models are equipped with a hydraulically-operated blade that can be tilted, raised, lowered, and extended to perform a variety of tasks, including grading, ditching, and leveling. They also feature a comfortable operator cab with excellent visibility, intuitive controls, and a comprehensive instrumentation panel for monitoring machine performance.

These Komatsu motor graders are built for demanding working conditions and are designed to deliver high productivity. They utilize a technologically advanced hydraulic system that provides smooth and efficient operation, reducing operator fatigue and enhancing machine performance. Additionally, the GD555-3A, GD655-3A, and GD675-3A motor graders incorporate features for enhanced safety and serviceability. They feature a clear operator's cab with a wide field of view, a robust rollover protection system (ROPS) and fall protection systems (FOPS), and easy access to all major maintenance points. The use of high-quality materials and rigorous testing ensures reliability and durability, minimizing downtime and maximizing uptime. The Komatsu GD555-3A, GD655-3A, and GD675-3A motor graders are well-regarded in the construction industry for their performance, reliability, and versatility, making them an ideal choice for demanding projects.