Complete factory service repair manual for the Hitachi Zaxis ZX 40U-2 50U-2 Excavator.
This manual consists of three portions: the Technical Manual and the Workshop Manual.
Information included in the Technical Manual:
technical information needed for operational performance tests, and troubleshooting procedures.
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 Torque
Group 3 Painting
Group 4 Bleeding Air from Hydraulic Oil
Tank
Group 5 Floor-Tilting Device
SECTION 2 UPPERSTRUCTURE
Group 1 Canopy
Group 2 Counterweight
Group 3 Pump Device
Group 4 Control Valve
Group 5 Swing Device
Group 6 Pilot Valve
Group 7 Solenoid Valve
Group 8 Revolution Sensing Valve
Group 9 Auxiliary Flow Selector Valve(Optional)
SECTION 3 UNDERCARRIAGE
Group 1 Swing Bearing
Group 2 Travel Device
Group 3 Center Joint
Group 4 Track Adjuster
Group 5 Front Idler
Group 6 Upper and Lower Roller
Group 7 Track
SECTION 4 FRONT ATTACHMENT
Group 1 Front Attachment
Group 2 Cylinder
SECTION 5 ENGINE AND ACCESSORY

TECHNICAL MANUAL
SECTION 1 GENERAL
Group 1 Specification
Group 2 Component Layout
Group 3 Component Specifications
SECTION 2 SYSTEM
Group 1 Control System
Group 2 Hydraulic System
Group 3 Electrical System
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Group 2 Revolution Sensing Valve
Group 3 Swing Device
Group 4 Control Valve
Group 5 Pilot Valve
Group 6 Travel Device
Group 7 Others (Upperstructure)
Group 8 Others (Undercarriage)
SECTION 4 OPERATIONAL PERFORMANCE TEST
Group 1 Introduction
Group 2 Standard
Group 3 Engine Test
Group 4 Excavator Test
Group 5 Component Test
Group 6 Adjustment
SECTION 5 TROUBLESHOOTING
Group 1 Diagnosing Procedure
Group 2 Troubleshooting A
Group 3 Troubleshooting B
Group 4 Troubleshooting C
Group 5 Electrical System Inspection

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Language: English
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