This comprehensive Workshop/Service manual is specifically designed for the Hyundai Robex R140W-7 Wheel Excavator. It encompasses a wide range of information crucial for the maintenance, repair, and understanding of this machine. With a total of 1264 pages, this manual provides detailed instructions and diagrams covering every aspect of the excavator's operation. The manual is organized into distinct sections, each addressing a specific area. Section 1 provides a foundation by introducing safety guidelines and essential specifications. Section 2 delves into the structural components and their functions, covering devices such as the pump, main control valve, swing device, travel device, RCV lever, accelerator pedal, brake pedal, transmission, transmission control valve, and steering valve. Section 3 focuses on the hydraulic system, elaborating on circuit layouts, including the main and pilot circuits, as well as single and combined operation principles. Section 4 delves into the electrical system, outlining component locations, electrical circuits, component specifications, and connectors. Section 5 explores the mechatronics system, providing an overview of its components, including the mode selection system, automatic deceleration system, power boost system, travel speed control system, automatic warming up function, engine overheat prevention function, anti-restart system, self-diagnostic system, engine control system, EPPR (Electro Proportional Pressure Reducing) valve, and monitoring system. Troubleshooting guidance is provided in Section 6, offering systematic approaches to address issues within the hydraulic and mechanical systems, electrical system, and mechatronics system. Section 7 establishes maintenance standards, covering operational performance tests, major components, and work equipment. Section 8 delves into disassembly and assembly procedures, offering guidance with precautions, tightening torques, and detailed instructions for disassembling and reassembling various components, including the pump device, main control valve, swing device, travel motor, transmission, steering valve, front axle and rear axle, RCV lever, turning joint, boom, arm, bucket, dozer and outrigger cylinders, and work equipment. Finally, Section 9 focuses on component mounting torques, providing a comprehensive guide covering engine, electrical, hydraulic, powertrain, structural, and work equipment components. This manual is an indispensable resource for technicians, mechanics, and anyone involved with maintaining and repairing the Hyundai Robex R140W-7 Wheel Excavator.

The Hyundai Robex R140W-7 is a robust and versatile wheel excavator designed for a wide range of construction and earthmoving applications. It boasts a powerful Cummins QSB4.5 engine, delivering impressive performance, while maintaining fuel efficiency. This excavator features a spacious and comfortable cab designed with operator comfort in mind, providing ample legroom, intuitive controls, and excellent visibility. The R140W-7 is equipped with a comprehensive safety system, including a robust rollover protection system (ROPS) and a falling object protection system (FOPS), ensuring operator safety in demanding working conditions. With its impressive lifting capacity, digging force, and travel speed, the R140W-7 is well-suited for various tasks, including excavation, loading, and material handling. Its compact size and excellent maneuverability make it ideal for working in confined spaces and urban environments. Beyond its core functionalities, the Hyundai Robex R140W-7 offers several features that enhance its versatility and efficiency. Its hydraulic system is designed for smooth and precise control, enabling operators to perform delicate tasks with ease. The excavator's advanced electronic control system provides real-time monitoring of key operating parameters, allowing for optimal performance and reduced downtime. Furthermore, the R140W-7 features a range of optional attachments that can be customized to meet specific job requirements. These attachments can include various buckets, breakers, grapples, and other specialized tools, expanding the excavator's capabilities and making it a valuable asset for a wide range of projects.