This comprehensive workshop and service manual provides an in-depth guide to the Hyundai Robex R55-9 Crawler Excavator. Covering all years of this model, the manual contains 414 pages of detailed information on maintenance, repair, disassembly, and assembly procedures. It also includes detailed electronic and hydraulic diagrams. The manual covers a wide range of topics, including: * **General:** Safety hints and specifications. * **Structure:** Pump device, main control valve, swing device, travel device, RCV lever, RCV pedal. * **Hydraulic System:** Hydraulic circuit, main circuit, pilot circuit, single operation, combined operation. * **Electrical System:** Component location, electrical circuit, electrical component specification, connectors. * **Mechatronics System:** Outline, mode selection system, automatic deceleration system, power boost system, travel speed control system, automatic warming up system, engine overheat prevention system, variable power control system, attachment flow control system, anti-restart system, self-diagnostic system, engine control system, EPPR valve, monitoring system, fuel warmer system. * **Troubleshooting:** Before troubleshooting, hydraulic and mechanical system, electrical system, mechatronics system. * **Maintenance Standard:** Operational performance test, major components, track and work equipment. * **Disassembly and Assembly:** Precaution, tightening torque, pump device, main control valve, swing device, travel device, RCV lever, turning joint, boom, arm and bucket cylinder, undercarriage, work equipment. * **Component Mounting Torque:** Introduction guide, engine system, electric system, hydraulic system, undercarriage structure, work equipment. This manual is an essential resource for anyone who works on or maintains the Hyundai Robex R55-9 Crawler Excavator. Its comprehensive coverage and detailed instructions will help you to keep your machine running smoothly and efficiently.

The Hyundai Robex R55-9 crawler excavator is a robust and versatile machine designed for a wide range of construction and excavation tasks. Boasting a powerful engine, a spacious operator cab, and a comprehensive set of features, the R55-9 offers exceptional performance and operator comfort. The machine's compact size and impressive maneuverability make it suitable for working in tight spaces, while its powerful digging force and lifting capacity enable it to handle demanding projects with ease. Equipped with a hydraulic system that delivers smooth and precise control, the R55-9 ensures efficient operation and minimizes operator fatigue. The excavator also incorporates advanced safety features to protect both the operator and the surrounding environment, including a comprehensive alarm system, a safety valve, and a sturdy rollover protection structure. The R55-9 is powered by a reliable and fuel-efficient engine that provides ample power for demanding applications. The engine's design optimizes fuel consumption, reducing operating costs and minimizing environmental impact. The excavator's tracks are designed for maximum traction and stability, ensuring optimal performance on various terrain types. Its robust undercarriage is built to withstand the rigors of demanding work environments, ensuring long-term durability and reliability. The operator cab is spacious and ergonomically designed, providing a comfortable and productive work environment. Featuring a comfortable seat, adjustable controls, and a clear view of the work area, the R55-9 maximizes operator comfort and efficiency. The excavator's intuitive controls and responsive hydraulic system allow for precise and efficient operation, enhancing productivity and reducing operator fatigue. The R55-9 is a versatile and reliable machine that can handle a wide range of construction and excavation tasks, making it an ideal choice for contractors and operators seeking a powerful and efficient solution.