ZX870-5A • 870LC-5A • 890H-5A • 890LCH-5A HYDRAULIC EXCAVATOR TECHNICAL MANUAL OPERATIONAL PRINCIPLE
HITACHI ZAXIS ZX
870-5A
870LC-5A
890H-5A
890LCH-5A
Hydraulic Excavator
Service Manual consists of the following separate Part No.
Technical Manual (Operational Principle) : Vol. No.TOJBM-EN
Technical Manual (Troubleshooting) : Vol. No.TTJBM-EN
Workshop Manual : Vol. No.WJBM-EN
Engine Manual : Vol. No.ETJBM-EN,EWJBM-EN
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
Group 1 Specification
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)
