This comprehensive Workshop Service Repair Manual provides detailed instructions, illustrations, and circuit diagrams for Komatsu Crawler Dozers D61EX-23 (serial number 30001 and up) and D61PX-23 (serial number 30001 and up). It covers a wide range of topics, including specifications, structure and function, standard value tables, testing and adjusting, troubleshooting, disassembly and assembly, maintenance standards, and appendices. The manual begins with an introduction that outlines safety procedures, general information, and how to use the manual effectively. It then delves into detailed specifications, including model-specific dimensions, weights, and fluid capacities. The "Structure and Function" section provides a thorough explanation of each system within the crawler dozer, including the engine, cooling system, power train, hydraulic system, work equipment, cab and attachments, and electrical system. The manual continues with sections on standard value tables, which offer crucial reference information for various components and systems. The "Testing and Adjusting" section provides step-by-step instructions for performing essential tests and adjustments on the dozer, ensuring optimal performance and reliability. A dedicated "Troubleshooting" section presents a comprehensive guide for identifying and resolving potential issues, covering both electrical and mechanical problems. "Disassembly and Assembly" provides detailed procedures for taking apart and reassembling various components of the dozer, including the engine, undercarriage, hydraulic system, and work equipment. The "Maintenance Standards" section outlines recommended maintenance schedules and procedures for all major components, ensuring the long-term health and longevity of your dozer. Finally, the appendices offer additional information on air conditioner components, troubleshooting charts, and electrical circuit diagrams.

## The Komatsu D61EX-23 and D61PX-23 Crawler Dozers: Power and Precision in Earthmoving The Komatsu D61EX-23 and D61PX-23 crawler dozers, boasting serial numbers 30001 and upwards, are heavy-duty machines designed for demanding earthmoving tasks. These models are renowned for their robust construction, powerful engines, and innovative technologies that contribute to increased productivity and operator comfort. The D61EX-23 stands out as an exceptionally fuel-efficient option, equipped with a Komatsu SAA6D107E-3 engine delivering 185 horsepower. Featuring a high-capacity blade and a wide range of attachments, it effectively tackles a variety of tasks including grading, pushing, and excavating. The D61PX-23 model, on the other hand, focuses on enhanced performance with a slightly increased power output of 195 horsepower, achieved by utilizing the Komatsu SAA6D108E-3 engine. This increased power allows for tackling even more demanding projects, while still maintaining the characteristic Komatsu reliability and longevity. Both models are designed with the operator in mind, providing a spacious and comfortable cab with excellent visibility and intuitive controls. The advanced hydraulic system provides precise blade and ripper control, while the robust undercarriage ensures exceptional traction and durability in challenging terrains. The inclusion of features like automatic lubrication systems, advanced diagnostics, and an optional Komatsu monitoring system further contributes to efficient operation and reduced downtime. The D61EX-23 and D61PX-23 dozers are a testament to Komatsu's commitment to engineering excellence and customer satisfaction, offering a reliable and powerful solution for construction and earthmoving projects of all scales.