This comprehensive workshop service repair manual is specifically designed for YANMAR ViO45-5, ViO45-5B, ViO55-5, and ViO55-5B Excavators. It covers both the 4TNV88-PBV and 4TNV88-BXBV diesel engine models, providing in-depth information for both repair and maintenance.

The manual begins with essential general information, technical data, tightening torque specifications, and service standards. It delves into detailed maintenance procedures, encompassing a comprehensive range of topics from engine internals to the hydraulic system. Each section includes step-by-step troubleshooting guides, detailed illustrations, and clear diagrams for visual clarity.

The manual further explores the intricacies of the engine system, covering aspects like engine body, lubrication, cooling, fuel injection, governor, and electrical components. Additionally, it provides in-depth explanations of the hydraulic system, focusing on the hydraulic pump, control & pilot valve, swing & travel motor, blade control valve, solenoid valve, pilot check valve, and electrical equipment repair procedures.

For complete understanding, the manual includes detailed engine disassembly instructions and a thorough breakdown of the undercarriage, control system, swing bearing, work implements, cabin system, hydraulic oil tank, and period inspection procedures. The troubleshooting section provides valuable guidance for resolving common issues. Lastly, the manual concludes with comprehensive reference data and wiring diagrams for enhanced understanding.

The YANMAR ViO45-5 and ViO55-5 excavators are compact and versatile machines, designed for a wide range of applications in the construction, landscaping, and utility industries. The models ViO45-5B and ViO55-5B represent later iterations, incorporating improvements and refinements based on user feedback and advancements in technology. These excavators are known for their precision, maneuverability, and fuel efficiency, making them popular choices for both professional contractors and homeowners tackling smaller projects.

Under the hood, the ViO45-5 and ViO55-5 are powered by YANMAR's renowned diesel engines, known for their durability and reliability. The compact design of these excavators allows for easy transport and maneuverability in tight spaces. Features like a spacious operator cab, comfortable controls, and a comprehensive range of attachments enhance productivity and operator comfort. The ViO45-5 and ViO55-5 are also equipped with advanced safety features, including an emergency stop button, overload protection, and a comprehensive warning system. The service manual provides detailed instructions for maintaining and repairing these excavators, ensuring their optimal performance and longevity. It covers everything from basic maintenance tasks like oil changes and filter replacements to more complex repairs involving hydraulic systems, electrical components, and engine troubleshooting. The manual is an essential resource for technicians and owners who want to keep their YANMAR ViO45-5 and ViO55-5 excavators in top working order.