1988 Hitachi EX225USR & EX225USR-LC Excavator Service Manual
Hitachi EX225USR and EX225USR-LC excavator service manual covering operational principles and systems, including electrical and hydraulic circuits, component functions, and specifications. Ref: KM-193E
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Models Covered & Key Technical Specifications
1988 Hitachi EX225USR & EX225USR-LC Service Manual
Technical Manual for Operational Principle
Hitachi EX225USR & EX225USR-LC | Component Operation & Systems Directory. Unit
- Design Data: 2.91 m is the specified arm length for optimal reach. Matrix.
- Advanced Weight Data: 21700 kg is the standard operating weight for the EX225USR model. Standards.
- Technical Capacity Limits: 0.8 m³ defines the bucket capacity (heaped) for the EX225USR. Margin.
- Standard Output Density: 107 kW is the rated engine output under HP Mode. Protocol.
- Prescribed Energy Draw: The engine speed is limited to 2150 rpm for maximum performance. Architecture.
- Engine Specifications: ISUZU A-6BG1T is the direct injection engine model utilized. Norms.
Professional Workshop Service Manual & Technical Specifications
Hitachi EX225USR & EX225USR-LC Hydraulic Excavator Service Manual: Diagnostics & Maintenance (1988) Service-Portfolio
Maintenance-Category: System Overviews // Application-Range: Hydraulic & Electrical Systems // Specification-Class: Component Functionality.
| Specification | Rating | Architecture |
|---|---|---|
| Engine Model | ISUZU A-6BG1T | Diesel, 4 cycle, 6-cylinder |
| Rated Output | 99.3 kW / 1950 min⁻¹ | Horsepower Mode: 106.6 kW / 2150 min⁻¹ |
| Operating Weight | 21700 kg (EX225USR) | Base Machine Dry Weight: 17600 kg (EX225USR) |
| Arm Length | 2.91 m (9 ft 7 in) | Bucket Capacity (Heaped): 0.8 m³ (EX225USR) |
| Ground Pressure | 48 kPa (EX225USR) | Swing Speed: 13.9 min⁻¹ (rpm) |
The service manual covers the hydraulic and electrical systems, detailing component operations, and providing essential maintenance information. It outlines the system's logic and function, including control systems, hydraulic circuits, and electrical equipment.
Inspection guidelines are provided for hydraulic and electrical system components, ensuring proper function and longevity.
Alignment specifications are included for major hydraulic components to maintain optimal performance and efficiency.
Reference data is included for engine specifications, operating ranges, and dimensions for transportation.
This manual covers system operation, including the main circuit, pilot circuit, and neutral circuit descriptions.
Diagnostic procedures are covered for electrical systems, including power circuits, preheat circuits, and starting circuits.
This document details torque specifications for various components to ensure proper joint separation prevention. The service manual covers system operations, hydraulic circuits, and electrical component functionalities.
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