This comprehensive service repair manual provides detailed technical information for the Fiat Kobelco EX455 (Tier 2) crawler excavator, ensuring efficient and accurate repairs. The manual is divided into three sections for clarity and ease of use: The **Technical Manual - Operational Principle** section covers the fundamental workings of the excavator's major systems and components. This section provides a thorough understanding of how the machine operates, serving as a foundation for effective troubleshooting. The **Technical Manual - Troubleshooting** section delves into operational performance testing and troubleshooting procedures. This section offers detailed guidance on identifying and resolving various issues that may arise during the excavator's operation. The **Workshop Manual** section contains essential information for maintaining and repairing the excavator, including: * **Structure and Function:** A detailed explanation of each component's structure and function, serving as a valuable resource for understanding the machine's design and troubleshooting. * **Testing and Adjusting:** Comprehensive guidelines for performing pre- and post-repair checks, as well as adjustments needed after completing repairs. This section also features troubleshooting charts correlating problems and their potential causes. * **Disassembly and Assembly:** Step-by-step procedures for disassembling, assembling, removing, and installing components. These instructions are accompanied by important precautions to ensure safe and effective operations. * **Maintenance Standard:** Clear standards for inspecting disassembled parts, ensuring that components meet quality requirements before reassembly. This manual is designed to empower service technicians with the knowledge and guidance needed to perform repairs efficiently and effectively. Its comprehensive coverage of operational principles, troubleshooting procedures, and maintenance guidelines makes it an invaluable resource for ensuring the optimal performance and longevity of the Fiat Kobelco EX455 (Tier 2) excavator.