This comprehensive Komatsu GD610, GD620, GD660, and GD670 series grader factory service repair manual provides in-depth technical information for maintaining and repairing these powerful machines. It covers a wide range of topics, including detailed specifications, troubleshooting procedures, exploded views, component diagrams, electrical schematics, hydraulic system diagrams, and step-by-step repair instructions. This invaluable resource is specifically designed for technicians and mechanics working on Komatsu GD610, GD620, GD660, and GD670 series graders with serial numbers: GD621A-1 (S/N: 10001 and up), GD622A-1 (S/N: 20001 and up), GD623A-1 (S/N: 30001 and up), GD625A-1 (S/N: 50001 and up), and other models within the series. With its detailed information and clear illustrations, this manual empowers you to diagnose and resolve a wide range of issues efficiently, minimizing downtime and maximizing productivity.

The Komatsu GD610, GD620, GD660, and GD670 series graders are powerful and versatile machines designed for a wide range of construction and earthmoving applications. These graders are known for their robust construction, reliable performance, and operator-friendly features. The GD610 and GD620 models are commonly used for smaller projects, while the GD660 and GD670 are suited for more demanding tasks. They all boast powerful engines, advanced hydraulic systems, and well-designed operator cabs that promote productivity and comfort.

These Komatsu graders offer a variety of features tailored to enhance operator efficiency and safety. They come equipped with automatic blade control systems that optimize blade position for precise grading operations, reducing manual adjustments and increasing accuracy. The integrated ripper allows for efficient removal of hard materials, while the blade can be adjusted to perform various tasks like scarifying, leveling, and ditching. The operator cabs feature ergonomic controls, clear visibility, and advanced climate control systems, ensuring a comfortable and productive work environment. The availability of optional features like GPS guidance systems further enhances precision and efficiency, enabling operators to achieve accurate and consistent results. Komatsu's commitment to quality and innovation is evident in these dependable and high-performing graders, making them ideal for a wide range of applications in the construction and earthmoving industries.