The Hitachi EX120-2 Excavator Service Manual is a comprehensive resource for both professional mechanics and DIY enthusiasts. It consists of two main sections: the Technical Manual (Troubleshooting) and the Workshop Manual.
The Technical Manual provides essential technical information required for operational performance tests and troubleshooting procedures. On the other hand, the Workshop Manual contains the necessary technical details for the maintenance and repair of the machine, including tools and devices required, maintenance standards, and removal/installation and assemble/disassemble procedures.
The Technical Manual is divided into several sections:
Section 1 - Specification
Group 1 General Information
Group 2 Dimensions and Weights
Group 3 Fuels and Lubricants
Group 4 Interchangeability
Section 2 - Upperstructure
Group 1 Layout
Group 2 Tanks
Group 3 Pump Device
Group 4 Pipings
Group 5 Swing Device
Group 6 Pilot Valve
Group 7 Solenoid Valve
Group 8 Lock Valve
Group 9 Shockless Valve
Group 10 Accumulator
Section 3 - Undercarriage
Group 1 Swing Bearing
Group 2 Travel Device
Group 3 Center Joint
Group 4 Adjuster
Group 5 Component Layout
Section 4 - Electrical System
Group 1 Component Location
Group 2 Engine Control System
Group 3 Monitor
Group 4 Circuit Operation
Group 5 Inspection and Maintenance
Section 5 - Hydraulic System
Group 1 General
Group 2 Control System
Group 3 Control Circuit
Section 6 - Operational Performance Test
Group 1 Introduction
Group 2 Standard
Group 3 Engine Test
Group 4 Excavator Test
Group 5 Hydraulic Component Test
Group 6 Basic Performance Check
Section 7 - Troubleshooting
Group 1 Diagnosing Procedure
Group 2 Connector
Group 3 Troubleshooting A
Group 4 Troubleshooting B
Group 5 Troubleshooting C
Group 6 Harness Check
Electrical and Hydraulic schematics
The manual is available in a .PDF file format with a total of 451 pages and a size of 32Mb. It is presented in English and includes specifications, diagrams, actual real photo illustrations, and schemes. The digital format allows for efficient searching and printing of specific pages as needed.
For any inquiries or if you are in search of a specific manual, feel free to reach out. Have a great day!
