This comprehensive Komatsu Motor Grader GD 555 655 675 3A Workshop Service Repair Manual is an essential resource for technicians and mechanics working on these heavy-duty machines. It provides detailed instructions and diagrams for a wide range of maintenance and repair procedures. The manual covers specific models, including the Komatsu Grader GD555-3A, GD655-3A, and GD675-3A, and includes information on the various engine types used in these models: the 5.88L 4-cycle, 6-cylinder water-cooled, overhead valve, direct-injection type with turbocharger & aftercooler VHP engine for the GD555-3A, and the 8.27L 4-cycle, 6-cylinder water-cooled, overhead valve, direct-injection type with turbocharger & aftercooler VHP engine for the GD655-3A and GD675-3A. The manual starts with general information, including assembly drawings, specifications, weight tables, and fuel, coolant, and lubricant data. It delves into functional descriptions and maintenance procedures, covering components like the accelerator control, accelerator pedal, fan drive, engine removal and installation, power train diagram, and transmission system. Detailed torque specifications are provided for various components. The manual also addresses critical aspects like the electronic control module, main relief valve, transmission pump, differential lock pump, final drive, tandem drive, hydraulic piping, steering valve, priority valve, axle and brake systems, accumulator system, parking brake, wheel brake, hydraulic pump, main control valve, hydraulic system, swivel joint, air conditioner, engine and pre-heat circuit, shift control system, monitor and sensor, and testing and adjustments for various systems. To aid in troubleshooting, the manual includes comprehensive circuit wiring diagrams. With its detailed step-by-step written procedures, accompanied by clear pictures and diagrams, this manual offers a thorough and effective guide for tackling repairs, maintenance, and servicing of Komatsu Motor Graders GD 555 655 675 3A. This manual is an indispensable tool for any professional working with these powerful machines, ensuring they can confidently diagnose and fix problems, optimize performance, and keep their equipment running smoothly.

## Komatsu Motor Graders GD 555, 655, and 675 3A: Precision and Power in Earthmoving The Komatsu Motor Graders GD 555, 655, and 675 3A are heavy-duty machines designed for precision earthmoving and grading operations. Renowned for their reliability and efficiency, these graders are versatile tools employed in various construction, mining, and infrastructure projects. The 3A designation refers to a specific generation within the GD series, incorporating advancements in technology, performance, and operator comfort. These models feature powerful engines, robust construction, and advanced hydraulic systems, enabling them to tackle demanding tasks with ease. The GD 555, 655, and 675 3A graders boast a range of features designed to optimize performance and operator experience. Their ergonomic operator station offers a comfortable and intuitive interface, allowing for precise control over the machine's functions. The robust blade design ensures exceptional grading accuracy, while the powerful engine provides ample torque for demanding applications. These graders implement advanced hydraulic systems for smooth, responsive adjustments of blade angles and lift, offering operators the flexibility required for diverse terrain and project requirements. The Komatsu GD 555, 655, and 675 3A models are known for their durability, built to withstand the rigors of demanding applications, and engineered for long service life. These features make them reliable workhorses in diverse construction and infrastructure projects, contributing significantly to the efficiency and quality of earthmoving operations.