This manual is a complete factory service repair manual for Hitachi ZW120-6 Wheel Loader. This manual consists of three portions: Hitachi ZW120-6 Technical Manual (Operational Principle), the Technical Manual (Troubleshooting) and Hitachi ZW120-6 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 and Electrical Circuit Diagram. 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. Service Repair Manual Covers: WORKSHOP MANUAL SECTION 1 GENERAL INFORMATION Group 1 Precautions for Disassembling and Assembling Group 2 Tightening Group 3 Painting Group 4 Bleeding Air Group 5 Preparation SECTION 2 MAINTENANCE STANDARD Group 1 Body Group 2 Travel System Group 3 Front Attachment SECTION 3 VEHICLE Group 1 Cab Group 2 Counterweight Group 3 Center Hinge Group 4 Engine Group 5 Radiator Assembly Group 6 Hydraulic Oil Tank Group 7 Fuel Tank Group 8 Pump Device Group 9 Control Valve Group 10 Pilot Valve Group 11 Missing Number Group 12 Missing Number Group 13 Solenoid Valve Group 14 Priority Valve Group 15 Missing Number Group 16 Ride Control Device Group 17 Battery Disconnect Switch Group 18 Aftertreatment Device Group 19 DEF Tank Group 20 Coolant Control Valve Group 21 DEF Supply Module Group 22 Exterior Components SECTION 4 TRAVEL SYSTEM Group 1 Tire Group 2 Drive Unit Group 3 Axle Group 4 Propeller Shaft Group 5 Brake Valve Group 6 Steering Device Group 7 Missing Number SECTION 5 FRONT ATTACHMENT Group 1 Front Attachment Group 2 Cylinder TECHNICAL MANUAL (Operational Principle) SECTION 1 GENERAL Group 1 Specifications Group 2 Component Layout Group 3 Component Specifications SECTION 2 SYSTEM Group 1 Controller Group 2 Control System Group 3 ECM System Group 4 Hydraulic System Group 5 Electrical System SECTION 3 COMPONENT OPERATION Group 1 Pump Device Group 2 Control Valve Group 4 Steering Valve Group 5 HST Motor Group 6 Pilot Valve Group 8 Transmission Group 9 Axle Group 10 Brake Valve Group 11 Priority Valve Group 12 Ride Control Valve Group 13 Others TECHNICAL MANUAL (Troubleshooting) SECTION 4 OPERATIONAL PERFORMANCE TEST Group 1 Introduction Group 2 Standard Group 3 Engine Test Group 4 Machine Performance Test Group 5 Component Test Group 6 Adjustment SECTION 5 TROUBLESHOOTING Group 1 Diagnosing Procedure Group 2 Monitor Group 3 e-Service Group 4 Component Layout Group 5 Troubleshooting A Group 6 Troubleshooting B Group 7 Troubleshooting C Group 8 Air Conditioner Hitachi ZW120-6 ELECTRIC CIRCUIT DIAGRAM Hitachi ZW120-6 HYDRAULIC CIRCUIT DIAGRAM ================================================== High Quality PDF Manual,All pages are printable. Instant Download No Shipping Cost No Need to Wait For A CD-ROM File Format: PDF Language: English Compatible: All Versions of Windows & Mac Requirements: Adobe PDF Reader , WinZip Thanks for visiting!.