This comprehensive manual provides detailed information on maintaining, assembling, disassembling, and servicing your Komatsu GD555-3C, GD655-3C, and GD675-3C Motor Grader. It covers a wide range of topics, equipping you with the knowledge to optimize performance through efficient, cost-effective, and safe machine operation and maintenance.

The Service Repair Manual section delves into the intricacies of your grader, offering specifications, diagrams, real-photo illustrations, and detailed schematics. This structured approach guides you through step-by-step repair procedures, diagnosis, servicing, technical maintenance, and troubleshooting. With this information, you can confidently tackle repairs and maintenance tasks, minimizing downtime and maximizing efficiency.

The Operation & Maintenance Manual focuses on the practical aspects of operating your grader, providing clear instructions on handling, lubrication, routine maintenance, checks, and adjustments. This valuable resource ensures that both operators and maintenance personnel have the knowledge necessary for safe and optimal machine use, contributing to peak performance and extended equipment life.

This manual covers the following models and serial numbers:

* **GD555-3C** - Serial Number: 50001 and up
* **GD655-3C** - Serial Number: 50001 and up
* **GD675-3C** - Serial Number: 50001 and up

**Engine Information:**

* **GD555-3C** - SA6D102E-1 or SAA6D102E-2 engine
* **GD655-3C, GD675-3C** - S6D114E-1, SA6D114E-1 or SAA6D114E-2 engine

For complete engine details, refer to the 102 Series Engine Shop Manual and the 114 Series Engine Shop Manual.

This manual is a valuable resource for anyone who wants to learn more about their Komatsu GD555-3C, GD655-3C, or GD675-3C Motor Grader, enabling you to keep your machine running smoothly and efficiently.

The Komatsu GD555-3C, GD655-3C, and GD675-3C motor graders are powerful and versatile machines designed for a wide range of construction, road maintenance, and earthmoving tasks. These models, with serial numbers 50001 and up, represent a significant advancement in Komatsu's motor grader line, offering enhanced performance, durability, and operator comfort. The GD555-3C, GD655-3C, and GD675-3C boast a robust design featuring a reliable Komatsu engine that delivers impressive power and torque for efficient operation in challenging conditions. Their advanced hydraulic systems provide precise control over blade movements for accurate grading and finish work, while the operator cab offers a comfortable and ergonomic environment with excellent visibility and intuitive controls.

These Komatsu motor graders are equipped with a variety of features that enhance their productivity and versatility. The electronically controlled blade system allows for precise adjustments, enabling operators to achieve the desired grade with ease. The advanced steering system ensures smooth and responsive handling, making it easier to maneuver the machine in confined spaces. The optional blade extensions and attachments, such as rippers and scarifiers, further expand the capabilities of these machines, allowing them to tackle a wider range of tasks. The GD555-3C, GD655-3C, and GD675-3C are built with a focus on operator comfort and safety. The spacious cab features a comfortable seat, adjustable controls, and a well-designed layout that minimizes fatigue during long shifts. The comprehensive safety features include a robust roll-over protective structure (ROPS) and a falling object protective structure (FOPS) to ensure the operator's safety in hazardous environments.