This comprehensive Komatsu GD650A GD650AW Motor Grader Factory Service Repair Manual provides detailed instructions and illustrations for maintaining and repairing your grader. It covers a wide range of systems and components, allowing you to perform a variety of tasks, from routine maintenance to complex repairs.

The manual covers critical areas like the articulation joint assembly, Char-Lynn orbitrol unit, transmission power shift (Funk 2263E130B), all wheel drive pump (Rexroth), circle reverse motor (Danfoss), circle reverse motor with part number 1435 598 H91 (Char-Lynn), steering and brake pump (Eaton Model 70422 RDU), hydraulic motor (Vickers) for all wheel drive, hydraulic oil swivel block (four-way), control valve manifolds (Husco 5000C series), main system pump, all wheel drive hydraulic integrated circuit (HIC) valve, hydraulic cylinders, accumulators with part numbers 1285 352 H91, 1279 537 H, and 1233 789 H91, rear axle cooling and lock/unlock differential pump, 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 & lock/unlock differential), circle adjustment (four shoe), metric conversions, parking brake caliper (Perrot P/N 40 023 002 and Mico), brake valve (Rexroth and Mico), wiring diagrams, pre-delivery procedures, suspension seat, general torque values, and metric conversions.

You'll find detailed substeps expanding repair procedure information, notes, cautions, and warnings to highlight critical information throughout each chapter. Numbered instructions guide you through each repair procedure step by step. Bold figure numbers help you quickly match illustrations with instructions. Detailed illustrations, drawings, and photos guide you through every procedure. Enlarged insets help you identify and examine parts in detail. A numbered table of contents makes it easy to find the information you need quickly.

This service manual simplifies diagnosing and repairing problems with your machine's electrical system. Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.

The Komatsu GD650A and GD650AW are robust, versatile motor graders designed for a wide range of construction and maintenance tasks. These machines leverage Komatsu's renowned engineering and durability to deliver reliable performance across demanding applications. The GD650A and GD650AW boast impressive power, maneuverability, and operator comfort, making them ideal for projects ranging from road construction and maintenance to site preparation and material handling. The GD650AW model features a wider moldboard and additional counterweight for enhanced stability and versatility in challenging terrain. Both models are equipped with powerful engines and advanced hydraulic systems, providing ample torque and precise control for a variety of grading and finishing operations.

Key features of the GD650A and GD650AW include a spacious and ergonomically designed operator cab for enhanced comfort and visibility, a robust undercarriage designed for superior durability and traction, and a highly responsive hydraulic system for precise blade control. The machines are also equipped with advanced safety features, such as a comprehensive lighting system, emergency braking system, and a robust ROPS/FOPS cab. Komatsu's dedication to reliability and efficiency is clear in the GD650A and GD650AW, as these machines are built to withstand the toughest working conditions and minimize downtime through robust construction and easy maintenance. Both models are supported by a comprehensive network of Komatsu dealerships, providing access to genuine parts, expert service, and comprehensive training resources.