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SECTION AND GROUP
CONTENTS
TECHNICAL MANUAL
(Troubleshooting)
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)2007
Hitachi Construction Machinery Co., Ltd.
Tokyo, Japan
All rights reserved
SECTION 4 OPERATIONAL PER-
FORMANCE TEST
Group 1 Introduction
Group 2 Standard
Group 3 Engine Test
Group 4 Excavator Test
Group 5 Component Test
SECTION 5 TROUBLESHOOTING
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
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 Electric Lever
Group 6 Transmission
Group 7 Axle
Group 8 Travel Motor
Group 9 Signal Control Valve
Group 10 Steering Valve
Group 11 Brake Valve
Group 12 Others (Upperstructure)
Group 13 Others (Undercarriage)
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