Hitachi EX120-5 Excavator Operational Principle+Troubleshooting+Workshop Manual
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Hitachi EX120-5 Excavator Operational Principle+Troubleshooting+Workshop Manual
This Listing includes all of the manuals mentioned below:
- Hitachi EX120-5 Excavator Workshop Manual
- Hitachi EX120-5 Excavator (Operational Principle,Troubleshooting) Technical Manual
- Hitachi EX120-5 Excavator Circuit Diagram & Harness
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Description:
Hitachi EX120-5 Excavator Operational Principle+Troubleshooting+Workshop Manual
TO THE READER
• This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine.
• Be sure to thoroughly read this manual for correct product information and service procedures.
• If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using ″Service Manual Revision Request Form″ at the end of this manual.
ADDITIONAL REFERENCES
• Please refer to the materials listed below in addition to this manual.
• The Operator’s Manual
• The Parts Catalog
• Operation Manual of the Engine
• Parts Catalog of the Engine
• Hitachi Training Material
MANUAL COMPOSITION
• This manual consists of three portions: the Technical Manual (Operational Principle), the Technical Manual (Troubleshooting) and the Workshop Manual.
• Information included in the Technical Manual (Operational Principle): technical information needed for redeliver and delivery, operation and activation of all devices and systems.
• Information included in the Technical Manual (Troubleshooting): technical information needed for operational performance tests, and troubleshooting procedures.
• Information included in the Workshop Manual: technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal/installation and assemble/disassemble procedures.
Table Of Contents:
Hitachi EX120-5 Excavator Operational Principle+Troubleshooting+Workshop Manual
- Hitachi EX120-5 Excavator Workshop Manual
Group 1 Swing Bearing
Remove and Install
Swing Bearing W3-1-1
Disassemble Swing Bearing W3-1-3
Assemble Swing Bearing W3-1-5
Group 2 Travel Device
Remove and Install
Travel Device W3-2-1
Disassemble Travel Device W3-2-4
Assemble Travel Device W3-2-8
Disassemble Travel Motor W3-2-14
Assemble Travel Motor W3-2-18
Disassemble and Assemble
Brake Valve W3-2-24
Maintenance Standard W3-2-30
Group 3 Center Joint
Remove and Install Center Joint W3-3-1
Disassemble Center Joint W3-3-4
Assemble Center Joint W3-3-6
Maintenance Standard W3-3-9
Group 4 Track Adjuster
Remove and Install
Track Adjuster W3-4-1
Disassemble Track Adjuster W3-4-2
Assemble Track Adjuster W3-4-10
Group 5 Front Idler
Remove and Install Front Idler W3-5-1
Disassemble Front Idler W3-5-2
Assemble Front Idler W3-5-6
Maintenance Standard W3-5-8
Group 6 Upper and Lower Roller
Remove and Install
Upper Roller W3-6-1
Remove and Install
Lower Roller W3-6-4
Disassemble Lower Roller W3-6-8
Assemble Lower Roller W3-6-10
Maintenance Standard W3-6-12
Group 7- Track
Remove and Install Track W3-7-1
Maintenance Standard W3-7-7
- Hitachi EX120-5 Excavator (Operational Principle,Troubleshooting) Technical Manual
Group 1 Pump Device
Outline T3-1-1
Main Pump T3-1-2
Regulator T3-1-5
Pilot Pump T3-1-12
Pump Delivery Pressure Sensor T3-1-12
Group 2 Swing Device
Outline T3-2-1
Swing Motor T3-2-2
Brake Valve T3-2-4
Swing Parking Brake T3-2-6
Swing Reduction Gear T3-2-7
Group 3 Control Valve
Outline T3-3-1
Hydraulic Circuit T3-3-6
Flow Combiner Valve T3-3-8
Pump Control Valve T3-3-9
Main Relief Valve T3-3-11
Overload Relief Valve
(With Make-Up Function) T3-3-11
Arm Regenerative Valve T3-3-12
Boom Anti-Drift Valve,
Arm Anti-Drift Valve T3-3-14
Bucket Flow Control Valve T3-3-14
Travel Flow Control Valve T3-3-16
Travel / Boom Lower
Selector Valve T3-3-16
Boom Regenerative Valve T3-3-18
Group 4 Pilot Valve
Outline T3-4-1
Operation T3-4-2
Group 5 Travel Device
Outline T3-5-1
Travel Reduction Gear T3-5-2
Travel Motor T3-5-3
Travel Brake Valve T3-5-10
Parking Brake T3-5-14
Group 6 Others (Upperstructure)
Pilot Shut-Off Valve T3-6-1
Shockless Valve T3-6-2
Solenoid Valve Unit T3-6-4
Pilot Relief Valve T3-6-6
EC Motor T3-6-6
Group 7 Others (Undercarriage)
Swing Bearing T3-7-1
Center Joint T3-7-2
Track Adjuster T3-7-3
Please Note:
- This is the SAME MANUAL used by the dealerships to diagnose your vehicle
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