1999-2002 Hitachi EX40U, EX50U Excavator Technical Manual
This 1999-2002 Hitachi EX40U, EX50U technical manual covers component layouts, hydraulic circuits, and troubleshooting procedures. Ref: 585T-1-1
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Models Covered & Key Technical Specifications
Hitachi EX40u, EX50u Excavator Technical Manual: 1999-2002 Documentation-Set
Covers component layouts, hydraulic circuits, and troubleshooting procedures. Ref: 585T-1-1 | Hitachi Excavators Volume
- Document Specifications: 456 pages establishes the detailed technical information coverage.
- Technical Data Catalog: For comprehensive system overviews, 29.748 MB defines the data file size Framework.
- Engine Information: The ISUZU 4LE1 engine requires 25.0 kW/1900 min-1 (34 PS/1900 rpm) for standard operation Logic.
- System Pressure Baseline: Primary Pilot Pressure is calibrated to 40±5 kgf/cm2 Benchmarks.
- Operational Standards: Secondary Pilot Pressure provides 30±5 kgf/cm2 Range.
- Component Testing: Main Relief Valve Set Pressure determines 260±10 kgf/cm2 Baseline.
Professional Workshop Service Manual & Technical Specifications
Hitachi EX40u, EX50u Excavator Technical Manual: 1999-2002 Documentation-Set
Equipment-Series: EX40u/EX50u // System-Identifier: Hitachi Excavators/Hydraulic System Logic // Conceptual-Layout: Technical Manual
Maintenance hierarchies are structured into sections covering General Information, Component Operation, Operational Performance Test, Troubleshooting, and Schematics.
Component Operation Overview
This manual documents the operation of various machine systems including the hydraulic circuit, pump device, swing device, control valve, pilot valve, travel device, and solenoid valves. Detailed diagrams illustrate the function and components of each system.
Specifications and Performance Standards
The document includes detailed specifications and performance standards for both the EX40u and EX50u models, covering engine speed, compression pressure, valve clearance, injection timing, travel speed, swing speed, and cylinder cycle times.
Troubleshooting Guidance
A comprehensive troubleshooting section provides systematic procedures for diagnosing and resolving issues related to the engine, electrical system, and various machine functions.
The manual documents torque specifications for various components to ensure proper assembly and function.
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