SECTION AND GROUP CONTENTS SECTION 4 OPERATIONAL PER- FORMANCE TEST SECTION 5 TROUBLESHOOTING TECHNICAL MANUAL (Troubleshooting) 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 Swing Device Group 3 Control Valve Group 4 Pilot Valve Group 5 Travel Device Group 6 Signal Control Valve Group 7 Others (Upperstructure) Group 8 Others (Undercarriage) All information, illustrations and speci- fications in this manual are based on the latest product information available at the time of publication.
The right is reserved to make changes at any time without notice. COPYRIGHT(C)2006 Hitachi Construction Machinery Co., Ltd. Tokyo, Japan All rights reserved Group 1 Introduction Group 2 Standard Group 3 Engine Test Group 4 Excavator Test Group 5 Component Test Group 6 Adjustment Group 1 Diagnosing Procedure Group 2 Monitor Unit Group 3 Dr. ZX Group 4 ICF Group 5 Component Layout Group 6 Troubleshooting A Group 7 Troubleshooting B Group 8 Electrical System Inspection