The Komatsu GD650A GD650AW Motor Grader Workshop Service Repair Manual provides comprehensive technical information for the GD650A and GD650AW models, covering serial numbers from 200840 onwards. This manual is designed to guide technicians and mechanics through various repair and maintenance procedures, offering detailed instructions for disassembly, adjustment, and troubleshooting across different systems and components. The manual features a wealth of information, including: * **Detailed breakdowns of the articulation joint assembly, Char-Lynn orbitrol unit, transmission power shift (Funk 2263E130B), all-wheel drive pump (Rexroth), circle reverse motor (Danfoss and Char-Lynn), steering and brake pump (Eaton Model 70422 RDU), hydraulic motor (Vickers), hydraulic oil swivel block, control valve manifolds (Husco 5000C series), main system pump, all-wheel drive hydraulic integrated circuit (HIC) valve, hydraulic cylinders, accumulators, and rear axle cooling and lock/unlock differential pump.** * **Thorough coverage of the circle reverse slip clutch, circle reverse gear case, tandem case (single and double strand chains), gearbox assembly (all-wheel drive), front axle assembly, final drive assembly (John Deere TeamMate II) with planetary and non-planetary reduction (NoSPIN and lock/unlock differential), circle adjustment (four-shoe), parking brake caliper (Perrot and MICO), brake valve (Rexroth and MICO), and suspension seat.** * **Comprehensive wiring diagrams for the electrical system, pre-delivery procedures, troubleshooting and adjustment guides, general torque values, and metric conversions.** The manual employs a clear and concise writing style, using step-by-step instructions, numbered procedures, bold figure numbers for easy referencing, detailed illustrations, drawings, photographs, enlarged insets for detailed component identification, and a numbered table of contents for quick access to relevant information. This comprehensive resource offers an invaluable tool for anyone involved in maintaining and repairing Komatsu GD650A and GD650AW motor graders.

The Komatsu GD650A and GD650AW motor graders are powerful and versatile machines designed for a wide range of construction and infrastructure projects. These machines are known for their robust construction, reliable performance, and operator comfort. The GD650A is the standard model, while the GD650AW features a wider blade and increased horsepower, making it suitable for more demanding applications. Both models are equipped with powerful diesel engines that provide ample torque for efficient grading, leveling, and other tasks. The Komatsu GD650A and GD650AW also feature a durable undercarriage with heavy-duty axles, track frames, and final drives, ensuring long-lasting performance even in harsh working conditions. The operator's cab is spacious and ergonomically designed, providing a comfortable and safe environment for extended operation. The machines are also equipped with a comprehensive suite of safety features, including an emergency stop button, a rollover protection system, and a high-visibility design. The Komatsu GD650A and GD650AW motor graders are equipped with a variety of features designed to enhance productivity and operator efficiency. These features include an advanced hydraulic system that provides precise blade control, a user-friendly control panel, and a powerful engine that delivers the necessary power for even the toughest grading jobs. The machines also boast a range of optional attachments, including rippers, snowplows, and scarifiers, which can be used to expand the capabilities of the grader for a wider range of applications. The Komatsu GD650A and GD650AW are known for their fuel efficiency, minimizing operating costs, and their low maintenance requirements, further contributing to their overall value. These machines are ideal for a wide range of applications, including road construction, site preparation, and landscaping, making them a valuable asset for any construction or infrastructure project.