Hitachi ZX85USB-6 Hydraulic Excavator WDER50-EN-00 (Preview)
WDER50-EN-00
INTRODUCTION
– To The Reader
– Additional References
– Manual Composition
– Page Number
– Trademark
– Safety Alert Symbol and Headline Notations
– Units Used
SYMBOL AND ABBREVIATION
– Symbol and Abbreviation
CONTRASTING LIST OF PART NAME
– Contrasting List of Part Name between Technical Manual and Parts Catalog
SAFETY
– Recognize Safety Information
– Understand Signal Words
– Follow Safety Instructions
– Prepare for Emergencies
– Wear Protective Clothing
– Protect Against Noise
– Inspect Machine
– General Precautions for the Cab
– Use Handholds and Steps
– Adjust the Operator’s Seat
– Ensure Safety Before Rising from or Leaving Operator’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 Multiple Machines
– Confirm Direction of Machine to Be Driven
– Drive Machine Safely
– Avoid Injury from Rollaway Accidents
– Avoid Injury from Back-Over and Swing Accidents
– Keep People Clear from Working Area
– Never Position the 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 fuel with care; it is highly flammable.
– 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
– Hot spraying fluids:
– Hot fluids and surfaces:
– Replace Rubber Hoses Periodically
– Avoid High-Pressure Fluids
– Prevent Fires
– Check for Oil Leaks:
– Check for Shorts:
– Clean up Flammable Materials:
– Check Key Switch:
– Check Heat Shields:
– 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 Containing Flammable Fluids
– Precautions for Handling Accumulator and Gas Damper
– Remove Paint Before Welding or Heating
– Beware of Asbestos and Silica Dust and Other Contamination
– Prevent Battery Explosions
– Service Air Conditioning System Safely
– Handle Chemical Products Safely
– Dispose of Waste Properly
– Never Ride Attachment
– Notes on Aftertreatment Device
– About Aftertreatment Device
– Precautions for Communication Terminal
– Precautions for Communication Terminal Equipment
– Notes on Protection of Operator’s Station when the Machine Rolls Over
– Before Returning the Machine to the Customer
SECTION AND GROUP CONTENTS
CONTENTS
GENERAL
– Precautions
— Precautions for Disassembling and Assembling
— Precautions for Using Floating Seal
— Precautions for Using Nylon Sling
— Maintenance Standard Terminology
– Tightening
— Tightening Bolts and Nuts
— Bolt Types
— Specified Tightening Torque Chart
— Tightening Order
— Precautions for Spilt Flange
— Nut and Bolt Locking
— Tightening Piping Joint
— Union Joint
— Pipe Joint
— O-Ring Face Seal Joint
— Quick Coupling
— Screw-In Connection
— Seal Tape Application
— Low-Pressure-Hose Clamp Tightening
— Connecting Hose
– Painting
— Painting
– Bleeding Air
— Bleeding Air from Hydraulic System
— Bleeding Air from Pump
— Bleeding Air from Travel Motor, Swing Motor
— Bleeding Air from Hydraulic Circuit
— Bleeding Air from Fuel System
— Bleeding Air from Radiator
– Preparation
— Preparation before Inspection and Maintenance
— Hydraulic Circuit Pressure Release Procedure
— Pressure Release from Hydraulic Oil Tank
MAINTENANCE STANDARD
– Upperstructure
— Maintenance Standard for Main Pump 1, 2
— Maintenance Standard for Main Pump 3
— Maintenance Standard for Swing Motor
– Undercarriage
— Maintenance Standard for Travel Motor
— Maintenance Standard for Parking Brake
— Maintenance Standard for Sprocket
— Maintenance Standard for Front Idler
— Maintenance Standard for Upper Roller
— Maintenance Standard for Lower Roller
— Maintenance Standard for Track
– Front Attachment
— Maintenance Standard for Pin and Bushing
— Maintenance Standard for Side Cutter (3053595, 3053596)
— Maintenance Standard for Point (4135496)
— Standard Dimensions for Arm and Bucket Connection
— Maintenance Standard for Cylinder
UPPERSTRUCTURE
– Cab
— Removal of Cab
— Installation of Cab
— Dimensions of Cab Glass
— Procedure to Remove Cab Glass
— Procedure to Install Cab Glass
— Installation Procedures of Upper Front Glass
– Counterweight
— Removal of Counterweight
— Installation of Counterweight
– Main Frame
— Removal of Main Frame
— Installation of Main Frame
– Engine
— Removal of Engine
— Installation of Engine
– Pump Device
— Removal of Pump Device
— Installation of Pump Device
— Disassembly of Main Pump 3
— Assembly of Main Pump 3
— Disassembly of Main Pump 1, 2
— Assembly of Main Pump 1, 2
— Structure of Gear Pump
– Control Valve
— Removal of Control Valve
— Installation of Control Valve
— Disassembly of Spool
— Assembly of Spool
— Disassembly of Main Relief Valves (w, aa)
— Assembly of Main Relief Valves (w, aa)
— Disassembly of Overload Relief Valves (q, r, s, t, v, x, z, ab, ac, ad)
— Assembly of Overload Relief Valves (q, r, s, t, v, x, z, ab, ac, ad)
— Disassembly of Signal Plug (an)
— Assembly of Signal Plug (an)
— Disassembly of Anti-Drift Valve (al)
— Assembly of Anti-Drift Valve (al)
— Disassembly of Load Check Valve (am)
— Assembly of Load Check Valve (am)
— Disassembly of Check Valves (ak, ao, ar, aw), Load Check Valves (ae, af, ap, aq, as, at, au, av)
— Assembly of Check Valves (ak, ao, ar, aw), Load Check Valves (ae, af, ap, aq, as, at, au, av)
— Disassembly of Flow Combiner Check Valve (ag)
— Assembly of Flow Combiner Check Valve (ag)
— Disassembly of Flow Combiner Check Valve (aj)
— Assembly of Flow Combiner Check Valve (aj)
— Disassembly of Swing Parking Brake Selection Valve (ai)
— Assembly of Swing Parking Brake Selection Valve (ai)
— Disassembly of Flow Combiner Check Valve (ah), Load Check Valve (ax)
— Assembly of Flow Combiner Check Valve (ah), Load Check Valve (ax)
— Disassembly of Shut-Off Valves (u, y)
— Assembly of Shut-Off Valves (u, y)
– Swing Device
— Removal of Swing Device
— Installation of Swing Device
— Disassembly of Swing Reduction Gear
— Assembly of Swing Reduction Gear
— Disassembly of Swing Motor
— Assembly of Swing Motor
– Pilot Valve
— Removal of Pilot Valve (Left)
— Installation of Pilot Valve (Left)
— Removal of Pilot Valve (Right)
— Installation of Pilot Valve (Right)
— Disassembly of Pilot Valves (Right and Left)
— Assembly of Pilot Valves (Right and Left)
— Removal of Travel Pilot Valve
— Installation of Travel Pilot Valve
— Disassembly of Travel Pilot Valve
— Assembly of Travel Pilot Valve
— Removal of Blade Pilot Valve
— Installation of Blade Pilot Valve
— Disassembly of Blade Pilot Valve
— Assembly of Blade Pilot Valve
— Removal of Boom Swing Pilot Valve
— Installation of Boom Swing Pilot Valve
— Removal of Auxiliary Pilot Valve
— Installation of Auxiliary Pilot Valve
— Disassembly of Boom Swing, Auxiliary Pilot Valve
— Assembly of Boom Swing, Auxiliary Pilot Valve
– Solenoid Valve
— Removal of Pilot Shut-Off Solenoid Valve
— Installation of Pilot Shut-Off Solenoid Valve
— Disassembly of Pilot Shut-Off Solenoid Valve
— Assembly of Pilot Shut-Off Solenoid Valve
— Removal of 2-Spool Solenoid Valve Unit
— Installation of 2-Spool Solenoid Valve Unit
— Structure of 2-Spool Solenoid Valve Unit
– Shockless Valve
— Removal of Shockless Valve
— Installation of Shockless Valve
— Structure of Shockless Valve
– Muffler Filter
— Removal of Muffler Filter
— Installation of Muffler Filter
— Disassembly of Muffler Filter
— Assembly of Muffler Filter
UNDERCARRIAGE
– Swing Bearing
— Removal of Swing Bearing
— Installation of Swing Bearing
– Travel Device
— Removal of Travel Device
— Installation of Travel Device
— Disassembly of Travel Device
— Assembly of Travel Device
— Disassembly of Travel Motor
— Assembly of Travel Motor
— Disassembly of Brake Valve
— Assembly of Brake Valve
– Center Joint
— Removal of Center Joint
— Installation of Center Joint
— Disassembly of Center Joint
— Assembly of Center Joint
— Replacement of Body
– Track Adjuster
— Removal of Track Adjuster
— Installation of Track Adjuster
— Disassembly of Track Adjuster
— Assembly of Track Adjuster
– Front Idler
— Removal of Front Idler
— Installation of Front Idler
— Disassembly of Front Idler
— Assembly of Front Idler
– Upper and Lower Rollers
— Removal of Upper Roller
— Installation of Upper Roller
— Removal of Lower Roller
— Installation of Lower Roller
– Track
— Removal of Track
— Installation of Track
– Blade Cylinder
— Removal of Blade Cylinder
— Installation of Blade Cylinder
— Disassembly of Blade Cylinder
— Assembly of Blade Cylinder
FRONT ATTACHMENT
– Front Attachment
— Removal of Front Attachment
— Installation of Front Attachment
– Cylinder
— Removal of Boom Cylinder
— Installation of Boom Cylinder
— Disassembly of Boom Cylinder
— Assembly of Boom Cylinder
— Removal of Arm Cylinder
— Installation of Arm Cylinder
— Disassembly of Arm Cylinder
— Assembly of Arm Cylinder
— Removal of Bucket Cylinder
— Installation of Bucket Cylinder
— Disassembly of Bucket Cylinder
— Assembly of Bucket Cylinder
— Removal of Boom Swing Cylinder
— Installation of Boom Swing Cylinder
— Disassembly of Boom Swing Cylinder
— Assembly of Boom Swing Cylinder
— Removal of Positioning Cylinder
— Installation of Positioning Cylinder
— Disassembly of Positioning Cylinder
— Assembly of Positioning Cylinder
– Hose Rupture Valve
— Removal of Hose Rupture Valve for Boom Cylinder
— Installation of Hose Rupture Valve for Boom Cylinder
— Removal of Hose Rupture Valve for Arm Cylinder
— Installation of Hose Rupture Valve for Arm Cylinder
— Structure of Hose Rupture Valves for Boom, Arm Cylinder
— Removal of Hose Rupture Valve for Positioning Cylinder
— Installation of Hose Rupture Valve for Positioning Cylinder
— Structure of Hose Rupture Valve for Positioning Cylinder
SERVICE MANUAL REVISION REQUEST FORM
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