SECTION 1 GENERAL SECTION AND GROUP CONTENTS Group 1 Specification Group 2 Component Layout Group 3 Component Specifications SECTION 2 SYSTEM Group 1 Control System Group 2 ECM System Group 3 Hydraulic System Group 4 Electrical System SECTION 3 COMPONENT OPERATION TECHNICAL MANUAL (Operational Principle) Group 1 Pump Device Group 2 Control Valve Group 3 Hydraulic Fan Motor Group 4 Steering Pilot Valve Group 5 Steering Valve Group 6 Pilot Valve Group 7 Charging Block Group 8 Ride Control Valve Group 9 Drive Unit Group 10 Axle Group 11 Brake Valve Group 12 Others 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. TECHNICAL MANUAL (Troubleshooting) SECTION 4 OPERATIONAL PER- FORMANCE TEST Group 1 Introduction Group 2 Standard Group 3 Engine Test Group 4 Wheel Loader Test Group 5 Component Test Group 6 Adjustment SECTION 5 TROUBLESHOOTING Group 1 Diagnosing Procedure Group 2 Dr.ZX Group 3 e-Wheel Group 4 Component Layout Group 5 Troubleshooting A Group 6 Troubleshooting B Group 7 Troubleshooting C Group 8 Electrical System Inspection COPYRIGHT (C) 2007 Hitachi Construction Machinery Co., Ltd. Tokyo, Japan All rights reserved