1987 onwards Hitachi EX120-2 hydraulic excavator manual

Product Information

Table of Contents

1. Introduction

   • 1.1 About This Manual
   • 1.2 Safety Information
   • 1.3 Machine Specifications
   • 1.4 Serial Number Location and Identification

2. Operation

   • 2.1 General Operation Instructions
   • 2.2 Controls and Instruments
   • 2.3 Pre-Operation Inspection
   • 2.4 Starting and Stopping the Engine
   • 2.5 Operating the Machine
   • 2.6 Operating Techniques
   • 2.7 Parking and Storage

3. Maintenance

   • 3.1 Maintenance Overview
   • 3.2 Maintenance Schedule
   • 3.3 Daily Checks and Maintenance
   • 3.4 Engine Maintenance
   • 3.5 Hydraulic System Maintenance
   • 3.6 Electrical System Maintenance
   • 3.7 Undercarriage Maintenance
   • 3.8 Structure Maintenance
   • 3.9 Air Conditioning and Heating

4. Troubleshooting

   • 4.1 Troubleshooting Guidelines
   • 4.2 Engine Troubleshooting
   • 4.3 Hydraulic System Troubleshooting
   • 4.4 Electrical System Troubleshooting
   • 4.5 Undercarriage Troubleshooting

5. Disassembly and Assembly

   • 5.1 General Disassembly Procedures
   • 5.2 Hydraulic Component Disassembly and Assembly
   • 5.3 Engine and Drive Train Disassembly and Assembly
   • 5.4 Undercarriage Disassembly and Assembly
   • 5.5 Cabin Disassembly and Assembly

6. Testing and Adjusting

   • 6.1 Testing Procedures Overview
   • 6.2 Hydraulic Pressure Testing and Adjustment
   • 6.3 Engine Testing and Adjustment
   • 6.4 Electrical System Testing

7. Systems and Components

   • 7.1 Hydraulic System Overview
   • 7.2 Electrical System Overview
   • 7.3 Engine and Drive Train System
   • 7.4 Undercarriage Components
   • 7.5 Cabin and Structure

8. Attachments

   • 8.1 Attachment Options
   • 8.2 Attachment Installation and Removal
   • 8.3 Using Attachments

9. Appendices

   • 9.1 Hydraulic Circuit Diagram
   • 9.2 Electrical Circuit Diagram
   • 9.3 Service Tools and Equipment
   • 9.4 Torque Specifications
   • 9.5 Lubrication Specifications and Capacities

10. Index .

The 1987 onwards Hitachi EX120-2 hydraulic excavator manual is an essential tool for mechanics, technicians, and owners. It contains detailed information on specifications, maintenance, engine, hydraulic system, and more, allowing them to efficiently repair and maintain the excavator.

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