Hitachi ZX17U-5A, ZX19U-5A Excavator WABA50-EN-00 (Preview)
WABA50-EN-00
INTRODUCTION
To The Reader
Additional References
Manual Composition
Page Number
Trademark
Safety Alert Symbol and Headline Notations
Units Used
SYMBOL AND ABBREVIATION
SAFETY
Recognize Safety Information
Understand Signal Words
Follow Safety Instructions
Prepare for Emergencies
Wear Protective Clothing
Protect Against Noise
Inspect Machine
General Precautions for Cab
Use Handrails and Steps
Adjust the Operator’s Seat
Ensure Safety Before Rising from or LeavingOperator’s Seat
Fasten Your Seat Belt
Move and Operate Machine Safely
Operate Only from Operator’s Seat
Jump Starting
Keep Riders off Machine
Precautions for Operations
Investigate Job Site Beforehand
Install OPG Guard
Restriction of Attachment Installation
Provide Signals for Jobs Involving MultipleMachines
Confirm Direction of Machine to Be Driven
Drive Machine Safely
Avoid Injury from Rollaway Accidents
Avoid Injury from Back-Over and SwingAccidents
Keep Person Clear from Working Area
Never Position Bucket Over Anyone
Avoid Undercutting
Avoid Tipping
Never Undercut a High Bank
Dig with Caution
Operate with Caution
Avoid Power Lines
Precautions for Lightning
Object Handling
Protect Against Flying Debris
Park Machine Safely
Handle Fluids Safely−Avoid Fires
Transport Safely
Practice Safe Maintenance
Warn Others of Service Work
Support Machine Properly
Stay Clear of Moving Parts
Prevent Parts from Flying
Avoid Injury from Attachment Falling Accident
Prevent Burns
Replace Rubber Hoses Periodically
Avoid High-Pressure Fluids
Prevent Fires
Evacuating in Case of Fire
Beware of Exhaust Fumes
Precautions for Welding and Grinding
Avoid Heating Near Pressurized Fluid Lines
Avoid Applying Heat to Lines ContainingFlammable Fluids
Precautions for Handling Accumulator (ZX26U-5A)
Remove Paint Before Welding or Heating
Beware of Asbestos and Silicon Dust and OtherContamination
Prevent Battery Explosions
Handle Chemical Products Safely
Dispose of Waste Properly
Never Ride Attachment
Precautions for Communication Terminal
Before Returning the Machine to the Customer
SECTION AND GROUPCONTENTS
SECTION 1GENERAL
Group 1 Precautions for Disassembling and Assembling
Precautions for Disassembling andAssembling
Group 2 Tightening
Tightening Bolts and Nuts
Piping Joint
Group 3 Painting
Painting
Group 4 Bleeding Air
Bleeding Air from Hydraulic Oil Tank
Bleeding Air from Hydraulic System
Bleeding Air from Fuel System
Bleeding Air from Radiator
Group 5 Releasing Pressure
Releasing Pressure in Hydraulic Circuit
Group 6 Preparation
Preparation before Inspection andMaintenance
Group 7 Connect The Hose
Angle to connect the hose
SECTION 2MAINTENANCE STANDARD
Group 1 Upperstructure
Pump Device
Group 2 Undercarriage
Travel Motor
Sprocket
Front Idler
Lower Roller
Track
Group 3 Front Attachment
Pin and Bushing
Side Cutter
Standard Dimensions for Arm and BucketConnection
Cylinder
SECTION 3UPPERSTRUCTURE
Group 1 Canopy
Removal and Installation of Canopy
Group 2 Counterweight
Removal and Installation of Counterweight
Group 3 Main Frame
Removal and Installation of Main Frame
Group 4 Pump Device
Removal and Installation of Pump Device
Disassembly of Pump Device
Assembly of Pump Device
Group 5 Control Valve
Removal and Installation of Control Valve
Disassembly and Assembly of Control Valve
Disassembly of Body
Assembly of Body
Disassembly of Spool
Assembly of Spool
Group 6 Swing Device
Removal and Installation of Swing Device
Disassembly of Swing Device
Assembly of Swing Device
Group 7 Pilot Valve
Removal and Installation of Pilot Valve (Left)
Removal and Installation of Pilot Valve (Right)
Removal and Installation of Travel Pilot Valve
Removal and Installation of Blade Pilot Valve
Removal and Installation of Boom SwingPilot Valve
Disassembly of Pilot Valves (Right and Left)
Assembly of Pilot Valves (Right and Left)
Disassembly of Travel Pilot Valve
Assembly of Travel Pilot Valve
Disassembly of Pilot Valves for Boom Swing,Blade, Auxiliary (Optional)
Assembly of Pilot Valves for Boom Swing,Blade, Auxiliary (Optional)
Group 8 Solenoid Valve
Removal and Installation of 2-Spool SolenoidValve
Disassembly of 2-Spool Solenoid Valve
Assembly of 2-Spool Solenoid Valve
SECTION 4UNDERCARRIAGE
Group 1 Swing Bearing
Removal and Installation of Swing Bearing
Group 2 Travel Device
Removal and Installation of Travel Device
Disassembly of Travel Reduction Gear
Assembly of Travel Reduction Gear
Disassembly of Travel Motor
Assembly of Travel Motor
Disassembly of Brake Valve
Assembly of Brake Valve
Group 3 Center Joint
Removal and Installation of Center Joint
Disassembly of Center Joint
Assembly of Center Joint
Group 4 Track Adjuster
Removal and Installation of Track Adjuster
Disassembly of Track Adjuster
Assembly of Track Adjuster
Group 5 Front Idler
Removal and Installation of Front Idler
Disassembly of Front Idler
Assembly of Front Idler
Group 6 Upper and Lower Rollers
Removal and Installation of Lower Roller
Group 7 Track
Removal and Installation of Track
Group 8 Blade Cylinder
Removal and Installation of Blade Cylinder
Disassembly of Blade Cylinder
Assembly of Blade Cylinder
Group 9 Side Frame Extend/Retract Cylinder
Removal and Installation of Side FrameExtend/Retract Cylinder
Disassembly of Side Frame Extend/RetractCylinder
Assembly of Side Frame Extend/RetractCylinder
SECTION 5FRONT ATTACHMENT
Group 1 Front Attachment
Removal and Installation of FrontAttachment
Group 2 Cylinder
Removal and Installation of Boom Cylinder
Removal and Installation of Arm Cylinder
Removal and Installation of Bucket Cylinder
Removal and Installation of Boom SwingCylinder
Disassembly of Boom Cylinder
Assembly of Boom Cylinder
Disassembly of Arm and Bucket Cylinders
Assembly of Arm and Bucket Cylinders
Disassembly of Boom Swing Cylinder
Assembly of Boom Swing Cylinders
SERVICE MANUAL REVISION REQUEST FORM
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