Factory Technical and Workshop Manual For Hitachi EX8-2B Excavators. Tons of illustrations, instructions, diagrams for step by step remove and install, assembly and disassembly, service, inspection, repair, troubleshooting, tune-ups.

Format: PDF
Language: English
Pages: 269
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Hitachi EX8-2B

Contents

1.Technical Manual

-GENERAL
–SPECIFICATION
Specifications
Working Ranges And Machine
Dimensions For Transportation
Engine Specification
–COMPONENT LAYOUT
Main Component
Electrical System
Monitor Panel
-SYSTEM
–HYDRAULIC SYSTEM
Hydraulic System
-COMPONENT OPERATION
–PUMP DEVICE
Outline
Function
–SWING DEVICE
Swing Motor
–CONTROL VALVE
Outline
Main Relief Valve
Overload Relief Valve
Overload Relief Valve (Swing)
Make-Up Valve
–TRAVEL DEVICE
Outline
Travel Reduction Gear
Travel Motor
Counterbalance Valve
–OTHERS
Swing Bearing
Center Joint
Track Adjuster
-OPERATIONAL PERFORMANCE TEST
–INTRODUCTION
Operational Performance Test
Preparation for Performance Tests
–ENGINE TEST
Engine Speed
Engine Compression Pressure
Valve Clearance
Nozzle Check
Injection Timing
–EXCAVATOR TEST
Travel Speed
Track Revolution Speed
Mistrack Check
Travel Motor Leakage
Swing Speed
Swing Function Drift Check
Swing Motor Leakage
Swing Bearing Play
Hydraulic Cylinder Cycle Time
Dig Function Drift
Control Lever Operating Force
Control Lever Stroke
–COMPONENT TEST
Main Relief Valve Set Pressure
Overload Relief Valve Set Pressure
–STANDARD
Operational Performance Standard
-TROUBLESHOOTING
–DIAGNOSING PROCEDURE
Introduction
Diagnosing Procedure
–TROUBLESHOOTING A
Troubleshooting A Procedure
Starter Does Not Rotate
Actuator Operating System Troubleshooting
Front Attachment System Troubleshooting
Swing System Troubleshooting
Travel System Troubleshooting
Blade System Troubleshooting
–TROUBLESHOOTING B
Troubleshooting B Procedure
Malfunction of Alternator Indicator
Malfunction of Engine Oil Pressure Indicator
Malfunction of Overheat Indicator
Malfunction of Hour Meter
–ELECTRICAL SYSTEM INSPECTION
Precautions for Inspection and Maintenance
Fuse Continuity Test
Battery Voltage Check
Voltage Check
Continuity Check

2.Workshop Manual

-GENERAL INFORMATION
–PRECAUTIONS FOR DISASSEMBLING AND ASSEMBLING
Precautions for Disassembling and Assembling
–TIGHTENING
Tightening Torque Specifications
Torque Chart
Piping Joint
-SUPERSTRUCTURE
–PUMP DEVICE
Remove and Install Pump Device
–CONTROL VALVE
Remove and Install Control Valve
–SWING DEVICE
Remove and Install Swing Device
Disassemble Swing Reduction Gear
Assemble Swing Reduction Gear
-UNDERCARRIAGE
–TRAVEL DEVICE
Remove and Install Travel Device
Disassemble Travel Device
Assemble Travel Device
Maintenance Standard
–CENTER JOINT
Remove and Install Center Joint
-FRONT ATTACHMENT
–FRONT ATTACHMENT
Remove and Install Front Attachment
Maintenance Standard
–CYLINDER
Remove and Install Cylinder
Maintenance Standard
-ENGINE AND ACCESSORY
–GENERAL INFORMATION
Specifications
Performance Curves
Dimensions
–MECHANISM
— ENGINE BODY
ENGINE BODY
Cylinder Block
Cylinder Head
Crankshaft
Piston and Piston Rings
Connecting Rod
Camshaft
Flywheel
Rocker Arm
Valve Timing
—LUBRICATION SYSTEM
General
Oil Pump
Relief Valve
Oil Filter Cartridge
Oil Pressure Switch
—COOLING SYSTEM
General
Water Pump
Thermostat
Radiator
Radiator Cap
—FUEL SYSTEM
General
Fuel Filter
Fuel Feed Pump
Injection Pump
Injection Nozzle
—GOVERNOR
—ELECTRICAL SYSTEM
Starting System
Charging System
—COOLING SYSTEM
General
Water Pump
Thermostat
Radiator
Radiator Cap
—FUEL SYSTEM
General
Fuel Filter
Fuel Feed Pump
Injection Pump
Injection Nozzle
Governor
—ELECTRICAL SYSTEM
Starting System
Charging System
–DISASSEMBLING AND SERVICING
—GENERAL
Engine Identification
General Precautions
Tightening Torques
Troubleshooting
Servicing Specifications
Maintenance Check List
Check and Maintenance
Special Tools
—ENGINE BODY
Checking and Adjustings
Disassembling and Assembling
Draining Water and Oil
External Components
Cylinder Head and Valves
Timing Gear and Camshaft
Piston and Connecting Rod
Flywheel and Crankshaft
Servicing
Cylinder Head and Valves
Piston and Connecting Rod
Timing Gear and Camshaft
Crankshaft
Cylinder
—LUBRICATING SYSTEM
Checking
Disassembling and Assembling
Servicing
Oil Pump
—Cooling System
Checking and Adjusting
Fat Belt
Radiator
Thermostat
Disassembling and Assembling
Thermostat and Water Pump
—Fuel System
Checking and Adjusting
Injection Nozzle
Injection Pump
Disassembling and Assembling
Injection Nozzle
—ELECTRICAL SYSTEM
Checking
Dynamo and Regulator
Starter
Glow Plug
Disassembling and Assembling
Starter
Servicing
Starter