This comprehensive workshop service repair manual is designed for Komatsu Motor Graders GD 555, GD 655, and GD 675 3A models. It provides detailed information and instructions for servicing and repairing these machines. The manual covers a wide range of topics, including general information, assembly drawings, specifications, weight tables, fuel, coolant, and lubricant details. It also offers guidance on functionality and maintenance procedures, covering components like the accelerator control, accelerator pedal, fan drive, engine removal/installation, and power train diagrams. The manual delves into the transmission system, torque specifications, electronic control module, main relief valve, transmission pump, differential lock pump, final drive, tandem drive, hydraulic piping, steering valve, priority valve, axle & brake systems, accumulator system, parking brake, wheel brake, hydraulic pump, main control valve, hydraulic system, swivel joint, air conditioner, engine & pre-heat circuit, shift control system, monitor & sensor, and testing & adjustments. Furthermore, it includes detailed circuit wiring diagrams for comprehensive understanding of the electrical system. The manual features detailed exploded views and step-by-step written procedures, accompanied by pictures and diagrams, ensuring clarity and ease of use. This manual is an indispensable resource for technicians and individuals looking to perform repairs, maintenance, and service on Komatsu Motor Graders GD 555, GD 655, and GD 675 3A models.

The Komatsu GD 555, 655, and 675 series motor graders are powerful and versatile machines designed for a wide range of construction and maintenance tasks. These graders are renowned for their robust construction, reliable performance, and operator-friendly design. With their powerful engines and advanced hydraulic systems, they provide precise control and exceptional productivity in demanding applications. The GD 555, 655, and 675 models feature a range of improvements over their predecessors, including enhanced operator comfort, improved visibility, and enhanced safety features. The Komatsu GD 555, 655, and 675 motor graders are equipped with a variety of features that contribute to their performance and versatility. These include a powerful engine, a robust transmission, a high-capacity hydraulic system, and a durable blade. The engine provides the power needed to handle heavy loads and operate at high speeds, while the transmission ensures smooth and efficient gear changes. The hydraulic system provides precise control over the blade, moldboard, and other attachments, allowing for a wide range of operations. The durable blade is designed to withstand the wear and tear of heavy-duty applications. The graders are also equipped with a variety of safety features, including a roll-over protection structure (ROPS) and a falling object protection structure (FOPS). These features help to protect the operator from injury in the event of an accident.