Hitachi ZW 310-6 User manual

310-6
330-6
Wheel Loader
ENMNFB-EN2-4ZW310-6 • 330-6 WHEEL LOADER OPERATOR'S MANUAL
URL:http://www.hitachi-c-m.com
ENMNFB-EN2-4
PART NO.
Operator's Manual
Serial No.
ZW310-6 007001 and up
ZW330-6 009001 and up
PRINTED IN THE NETHERLANDS 2019, 11

©2019 Hitachi Construction Machinery Co., Ltd.
All rights reserved.
INTRODUCTION
Read this manual carefully to learn how to operate and
service your machine correctly. Failure to do so could
result in personal injury or machine damage.
This standard specification machine can be operated
under the following conditions without being modified.
Atmospheric Temperature: -20 °C to 40 °C (-4 °F to 104 °F)
Altitude: 0 m to 2000 m (0 ft to 6600 ft)
In case the machine is used under conditions other than
described above, consult your nearest Hitachi dealer.
This manual should be considered a permanent part of
your machine and should remain with the machine when
you sell it.
This machine is of metric design. Measurements in this
manual are metric. Use only metric hardware and tools as
specified.
Right-hand and left-hand sides are determined by
facing in the direction of forward travel.
Write product identification numbers in the Machine
Numbers section. Accurately record all the numbers
to help in tracing the machine should it be stolen.
Your dealer also needs these numbers when you order
parts. If this manual is kept on the machine, also file the
identification numbers in a secure place off the machine.
Use only diesel fuel with quality specified in JIS K-2204,
EN-590 or ASTM D-975 which contents 15 ppm or lower
sulfur.
Also use fuel that complies with solid contamination level
of class 18/16/13 of ISO4406-1999 (solid contamination
includes dust). If the fuel specified above is not used,
exhaust gas that exceeds the regulation values may be
discharged, causing serious problem on the engine.
Consult your nearest Hitachi dealer.
Warranty is provided as a part of Hitachi’s support
program for customers who operate and maintain their
equipment as described in this manual. The warranty is
explained on the warranty certificate which you should
have received from your dealer.
This warranty provides you with the assurance that
Hitachi will back its products where defects appear within
the warranty period. In some circumstances, Hitachi also
provides field improvements, often without charge to the
customer, even if the product is out of warranty.
Should the equipment be abused, or modified to
change its performance beyond the original factory
specifications, the warranty will become void and field
improvements may be denied.
Setting fuel delivery above specifications or otherwise
overpowering machines will result in such action.
Only qualified, experienced operators officially licensed
(according to local law) should be allowed to operate
the machine. Moreover, only officially licensed personnel
should be allowed to inspect and service the machine.
PRIOR TO OPERATING THIS MACHINE, INCLUDING
COMMUNICATION SYSTEM, IN A COUNTRY OTHER
THAN A COUNTRY OF ITS INTENDED USE, IT MAY
BE NECESSARY TO MAKE MODIFICATIONS TO IT SO
THAT IT COMPLIES WITH THE LOCAL REGULATORY
STANDARDS (INCLUDING SAFETY STANDARDS)
AND LEGAL REQUIREMENTS OF THAT PARTICULAR
COUNTRY. PLEASE DO NOT EXPORT OR OPERATE
THIS MACHINE OUTSIDE OF THE COUNTRY OF ITS
INTENDED USE UNTIL SUCH COMPLIANCE HAS
BEEN CONFIRMED. PLEASE CONTACT HITACHI
CONSTRUCTION MACHINERY CO., LTD. OR ANY OF
OUR AUTHORIZED DISTRIBUTOR OR DEALER IF YOU
HAVE ANY QUESTIONS CONCERNING COMPLIANCE.
In this manual, urea water is indicated as DEF/AdBlue®.
“DEF”stands for the Diesel Exhaust Fluid. AdBlue®
is a registered trademark of the Verband der
Automobilindustrie e.V. (VDA).
All information, illustrations and specifications in this manual are based on the latest product information available at the
time of publication. The right is reserved to make changes at any time without notice.
CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.

SAFETY
SAFETY SIGNS
NAME OF COMPONENTS
GETTING ON AND OFF THE MACHINE
OPERATOR’S STATION
BREAK-IN
OPERATING ENGINE
DRIVING MACHINE
OPERATING MACHINE
TRANSPORTING
MAINTENANCE
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
STORAGE
TROUBLESHOOTING
SPECIFICATIONS
OTHER ATTACHMENTS
INDEX
INDEX
ENMNFB-EN2-4
MACHINE NUMBERS
VISIBILITY MAP
INTENDED USE

CONTENTS
MACHINE NUMBERS ........................................................................1
Aftertreatment Device.......................................................................2
INTENDED USE....................................................................................1
Intended Use.........................................................................................1
Modifications........................................................................................1
SAFETY...............................................................................................S-1
Recognize Safety Information ....................................................S-1
Understand Signal Words.............................................................S-1
Follow Safety Instructions............................................................S-2
Prepare for Emergencies...............................................................S-3
Wear Protective Clothing..............................................................S-3
Protect Against Noise ....................................................................S-4
Inspect Machine ..............................................................................S-4
General Precautions for the Cab................................................S-5
Use Handrails and Steps ...............................................................S-6
Never Ride Attachment.................................................................S-6
Adjust Operator’s Seat...................................................................S-6
Ensure Safety Before Rising from or Leaving Operator’s
Seat .................................................................................................S-7
Fasten Your Seat Belt......................................................................S-7
Move and Operate Machine Safely...........................................S-8
Handle Starting Aids Safely .........................................................S-8
Operate Only from Operator’s Seat ..........................................S-9
Jump Starting ...................................................................................S-9
Investigate Job Site Beforehand............................................. S-10
Equipment of Head Guard, ROPS, FOPS............................... S-11
Provide Signals for Jobs Involving Multiple Machines.... S-11
Keep Riders Off Machine ........................................................... S-12
Drive Safely..................................................................................... S-12
Drive Machine Safely (Work Site)............................................ S-13
Drive Safely with Bucket Loaded ............................................ S-14
Drive on Snow Safely .................................................................. S-14
Travel on Public Roads Safely................................................... S-15
Avoid Injury from Rollaway Accidents.................................. S-15
Avoid Accidents from Backing Up and Turning ................ S-16
Avoid Positioning Bucket or Attachment Over Anyone. S-17
Avoid Tipping................................................................................. S-17
Never Undercut a High Bank.................................................... S-18
Dig with Caution........................................................................... S-18
Perform Truck Loading Safely .................................................. S-18
Avoid Power Lines........................................................................ S-19
Precautions for Operation......................................................... S-19
Precautions for Lightning.......................................................... S-19
Protect Against Flying Debris and Falling Object............. S-20
Object Handling ........................................................................... S-21
Protect Against Flying Debris .................................................. S-21
Park Machine Safely..................................................................... S-22
Store Attachments Safely.......................................................... S-22
Transport Safely ............................................................................ S-23
Handle Fluids Safely−Avoid Fires............................................S-24
Practice Safe Maintenance ....................................................... S-25
Warn Others of Service Work ................................................... S-26
Support Machine Properly........................................................ S-26
Stay Clear of Moving Parts ........................................................ S-27
Support Maintenance Properly............................................... S-27
Prevent Parts from Flying .......................................................... S-28
Prevent Burns................................................................................. S-28
Replace Rubber Hoses Periodically........................................ S-29
Avoid High-Pressure Fluids....................................................... S-29
Prevent Fires................................................................................... S-30
Evacuating in Case of Fire.......................................................... S-32
Beware of Exhaust Fumes..........................................................S-32
Precautions for Welding and Grinding ................................. S-32
Avoid Heating Near Pressurized Fluid Lines....................... S-33
Avoid Applying Heat to Lines Containing Flammable
Fluids ........................................................................................... S-33
Precautions for Handling Accumulator and Gas
Damper....................................................................................... S-33
Remove Paint Before Welding or Heating........................... S-34
Beware of Asbestos and Silica Dust and Other
Contamination......................................................................... S-34
Prevent Battery Explosions ....................................................... S-35
Service Air Conditioning System Safely ............................... S-35
Handle Chemical Products Safely........................................... S-36
Dispose of Waste Properly......................................................... S-36
Notes on Aftertreatment Device ............................................ S-37
Precautions for Communication Terminal........................... S-37
Precaution for Communication Terminal Equipment ..... S-38
VISIBILITY MAP ........................................................................... S-40
SAFETY SIGNS.............................................................................. S-42
NAME OF COMPONENTS ...........................................................1-1
Name of Components ...................................................................1-1
GETTING ON AND OFF THE MACHINE .................................1-2
Getting ON and OFF the Machine.............................................1-2
OPERATOR'S STATION.................................................................1-3
About Aftertreatment Device.....................................................1-3
Cab Features......................................................................................1-6
Front Console....................................................................................1-7
Right Console....................................................................................1-8
Fingertip Control Type .............................................................1-8
Multi-Function Joystick Type .................................................1-9
Monitor Panel ................................................................................1-10
Parking Brake Indicator (Red)...................................................1-11
Brake Oil Low Pressure Indicator (Red).................................1-11
Hydraulic Oil Level Indicator (Red)......................................... 1-11
Low Steering Oil Pressure Indicator (Red) ........................... 1-12
Transmission Warning Indicator (Red)..................................1-12
Communication Error Indicator (Yellow) ............................. 1-12
Discharge Warning Indicator (Red)........................................1-12
Engine Trouble Indicator (Red)................................................ 1-13
Overheat Indicator (Red) ...........................................................1-13
Engine Oil Low Pressure Indicator (Red).............................. 1-13
Air Filter Restriction Indicator (Red).......................................1-14
Preheat Indicator (Yellow)......................................................... 1-14
Coolant Temperature Gauge....................................................1-15
Fuel Gauge......................................................................................1-15
Turn Signal Indicator (Green) ...................................................1-16
High Beam Indicator (Blue)....................................................... 1-16

CONTENTS
Work Light Indicator (Yellow)...................................................1-16
Clearance Light Indicator (Green) .......................................... 1-17
Control lever lock indicator (Red)........................................... 1-17
Multi Function Monitor ..............................................................1-18
Default Setting ..............................................................................1-19
Basic Screen....................................................................................1-20
How to Use Screens.....................................................................1-21
Displaying Basic Screen........................................................ 1-21
Monitor Operation ................................................................. 1-25
Alarm Occurrence Screen.......................................................... 1-26
Remedy............................................................................................1-28
DEF/SCR System Alarm...............................................................1-31
DEF/AdBlue® Level Alarm .................................................... 1-31
Urea SCR System Malfunction............................................ 1-32
Aftertreatment Device................................................................ 1-33
Aftertreatment Device Condition Display .....................1-33
Aftertreatment Device Manual Regeneration
Request .................................................................................1-34
Aftertreatment Device Manual Regeneration
Procedure.............................................................................1-35
Main Menu......................................................................................1-37
Ride Control Drive Speed Setting...........................................1-38
Dual Lift Arm Auto-Leveler .......................................................1-39
Height Kickout ON/OFF, Stop Height Setting...............1-40
Lower Kickout ON/OFF, Stop Height Setting ................ 1-41
Brightness Adjustment...............................................................1-42
Mail (Optional)...............................................................................1-44
Setting Menu .................................................................................1-46
Date and Time................................................................................1-47
Time adjustment..................................................................... 1-47
Date Adjustment.....................................................................1-49
Display Mode Setting............................................................1-51
Auto Shut-Down (Optional)......................................................1-53
Auto Shut-Down: ON/OFF ................................................... 1-53
Auto Shut-Down: Setting Time..........................................1-54
Rear View Camera Monitor .......................................................1-55
Rear View Camera ON (Constant Display)/OFF (Non-
Display)/AUTO (Display at reverse operation).........1-55
Aftertreatment Device Regeneration Inhibited................ 1-57
Setting Procedure................................................................... 1-57
Transmission Setting................................................................... 1-59
Shift Change Delay Mode Setting ....................................1-59
Lockup Setting ........................................................................ 1-61
Parallel/Tandem Switching Setting........................................1-63
Warm Up Operation ....................................................................1-65
Language Settings.......................................................................1-67
List of Display Language............................................................ 1-69
Display Item Selection................................................................ 1-70
Main Menu Sequence Change ................................................1-72
Information Menu........................................................................ 1-74
Operation........................................................................................1-75
Fuel Consumption.................................................................. 1-75
Maintenance ..................................................................................1-77
Maintenance Notice...............................................................1-77
Remaining Time and Maintenance Interval .................. 1-79
Monitoring......................................................................................1-81
Switches, Steering Wheel and Pedals....................................1-83
Forward/Reverse Lever/ Shift Switch ....................................1-84
Forward/Reverse Lever .........................................................1-84
Shift Switch ...............................................................................1-84
Neutral Lever Lock (for the Forward/Reverse Lever) ....... 1-85
Steering............................................................................................ 1-85
Horn Switch.................................................................................... 1-85
Turn Signal Lever..........................................................................1-86
Light Switch.................................................................................... 1-87
High-Low Beam Switch.............................................................. 1-88
Key Switch.......................................................................................1-88
Wiper Switch ..................................................................................1-89
Wiper Operation......................................................................1-89
Front/Rear Wiper Switch....................................................... 1-90
Hazard Switch................................................................................ 1-91
Work Light Switch ........................................................................1-92
Parking Brake Switch...................................................................1-93
Accelerator Pedal..........................................................................1-94
Brake Pedal .....................................................................................1-94
Service Brake ............................................................................1-94
Clutch Cut Off Brake...............................................................1-94
Tilt, Telescopic Lever/Steering Column Pop-up Pedal ....1-95
Right Console / Switches...........................................................1-96
Fingertip Control Type ..........................................................1-96
Multi-Function Joystick Type ..............................................1-97
Control Lever..................................................................................1-98
Fingertip Control Type ..........................................................1-98
Multi-Function Joystick Lever ..........................................1-100
Control Lever Lock Switch.......................................................1-101
Armrest Adjust Handle.............................................................1-101
Right Console Fore-aft Adjustment.....................................1-101
Travel Mode Selector.................................................................1-102
Clutch Cut Position Switch......................................................1-103
Power Mode Switch...................................................................1-103
Quick Power Switch...................................................................1-104
Hold Switch ..................................................................................1-105
DSS (Down Shift Switch)..........................................................1-105
Ride Control Switch ...................................................................1-106
AUTO..........................................................................................1-107
OFF.............................................................................................1-107
Fan Reverse Rotation Switch..................................................1-108
Manual Operation ................................................................1-108
AUTO ........................................................................................1-109
Forward/Reverse Selector Switch.........................................1-110
Operational Procedure........................................................1-110
Emergency Steering Operation Check Switch.................1-111
Cigar Lighter.................................................................................1-112
Using Cigar Lighter...............................................................1-112
Ash Tray..........................................................................................1-112
Auto Air Conditioner.................................................................1-113
Features....................................................................................1-113
Components Name..............................................................1-114
Controller Part Name and Function ...............................1-115
Cab Heater Operation .........................................................1-117
Cooling Operation................................................................1-118
Defroster Operation.............................................................1-119

CONTENTS
Cool Head/Warm Feet Operation....................................1-119
Tips for Optimal Air Conditioner Usage .............................1-120
For Rapid Cooling .................................................................1-120
When Windows Become Misty.........................................1-120
Off-Season Air Conditioner Maintenance....................1-120
Adjusting Operator's Seat (Air Suspension Type
Seat)...........................................................................................1-121
Components Name..............................................................1-121
Rear Tray ........................................................................................1-126
Electric Power Output (Optional) .........................................1-126
Fuse Box.........................................................................................1-127
Fuse Box A ...............................................................................1-128
Fuse Box B................................................................................1-128
Hot/Cool Box................................................................................1-129
Tray and Drink Holder...............................................................1-129
ROPS Cab (ZW310-6).................................................................1-130
ROPS Cab (ZW330-6).................................................................1-132
Room Light (ZW310-6) .............................................................1-134
Room Light (ZW330-6) .............................................................1-135
Emergency Evacuation Hammer..........................................1-136
Sun Visor........................................................................................1-136
Coat Hook .....................................................................................1-137
Upper Switch Panel (Optional)..............................................1-138
Rotary Light Switch (Optional) ..............................................1-138
Rear View Mirror Heater Switch (Optional) .......................1-138
AM/FM Radio Operation..........................................................1-139
Audio Input ..................................................................................1-142
DAB Operating (Optional).......................................................1-143
Names of Parts.......................................................................1-144
Basic Operation .....................................................................1-146
DAB ............................................................................................1-147
RADIO........................................................................................1-151
EXTERNAL................................................................................1-153
Display Switch........................................................................1-155
Menus .......................................................................................1-156
Outside Rear View Mirror.........................................................1-162
Installation and Adjustment of Mirrors ..............................1-162
Mirror Installation Diagram...............................................1-163
Room Rear View Mirror.............................................................1-165
Cab Door........................................................................................1-165
Right Door Open/Close Lever (ZW310-6)..........................1-166
Right Door Lock (ZW310-6) ....................................................1-166
Door Lock Knob (ZW330-6) ....................................................1-166
Window Open/Close Levers...................................................1-167
Left Door Open/Close Lever (ZW310-6).............................1-168
Door Open/Close Lever (ZW330-6)......................................1-168
When Fully Opening the Left Door (ZW310-6)................1-168
Cab Door Release Lever (ZW310-6) .....................................1-168
Battery Disconnect Switch......................................................1-169
Switch Operation ..................................................................1-170
Articulation Lock Bar.................................................................1-171
Towing Pin ....................................................................................1-172
Inspection/Maintenance Side Access Cover.....................1-173
Rear Grille......................................................................................1-174
Steps................................................................................................1-175
Tool Box .........................................................................................1-175
Vandal-Proof Devices................................................................1-176
Seat Belt.........................................................................................1-178
Seat Pocket ...................................................................................1-178
BREAK-IN...........................................................................................2-1
Break-in Operation for New Machine.......................................2-1
OPERATING ENGINE.....................................................................3-1
Inspect Machine Daily Before Starting....................................3-1
Check Before Starting....................................................................3-3
Starting Engine ................................................................................3-5
Starting in Cold Weather...............................................................3-7
Check After Starting .......................................................................3-8
Using Booster Batteries.................................................................3-9
Warming Up Operation.............................................................. 3-11
Warming Up Operation in Cold Weather.............................3-12
Stopping Engine...........................................................................3-14
DRIVING MACHINE .......................................................................4-1
Driving the Machine.......................................................................4-1
Starting to Move..............................................................................4-2
Parking Brake Switch......................................................................4-7
Drive Speed Change.......................................................................4-8
Changing Forward/Reverse Drive Direction..........................4-8
Steering Wheel.................................................................................4-9
Emergency Steering ................................................................... 4-10
Stop and Restart of Driving ......................................................4-11
Precautions for Driving on Slopes..........................................4-14
Precautions to be Taken if Machine Failure Occurs..........4-15
Stop the Machine......................................................................... 4-16
Parking .............................................................................................4-18
Emergency Evacuation............................................................... 4-19
OPERATING MACHINE.................................................................5-1
Control Lever.....................................................................................5-1
Control Lever Lock Switch............................................................5-4
Clutch Cut Position Switch...........................................................5-5
Adjustment of Bucket Auto Leveler..........................................5-6
Adjustment of Dual Lift Arm Auto Leveler.............................5-8
Auto Shut-Down (Optional).........................................................5-9
Aftertreatment Device Manual Regeneration
Procedure ..................................................................................5-11
Before Operation.......................................................................... 5-13
Precautions for Operation.........................................................5-13
Ensure Safety When Operating on Road Shoulders ........ 5-13
Avoid Overloading.......................................................................5-14
Avoid Rapid Steering Changes and/or Sudden
Braking........................................................................................5-14
Avoid Operation with Biased Loads ......................................5-14
Excavation.......................................................................................5-15
Grading ............................................................................................5-17
Loading............................................................................................5-18
Dozing.............................................................................................. 5-21
Scooping .........................................................................................5-21
Removing Snow............................................................................5-22
Lifting Wheel Loader................................................................... 5-22
Precautions for After Operations............................................ 5-23

CONTENTS
TRANSPORTING .............................................................................6-1
Transporting by Road ....................................................................6-1
Transporting by Trailer ..................................................................6-1
Loading / Unloading on Trailer...................................................6-2
Fastening Machine for Transporting ........................................6-4
Transporting Wheel Loader (Urgent Situation) ....................6-5
Towing Method................................................................................6-9
Lifting Machine .............................................................................6-10
MAINTENANCE...............................................................................7-1
Correct Maintenance and Inspection Procedures...............7-1
Check the Hour Meter Regularly................................................7-3
Layout..................................................................................................7-4
Preparations for Inspection and Maintenance .....................7-8
Lock Frames....................................................................................7-10
Inspection/Maintenance Side Access Cover.......................7-11
Rear Grille........................................................................................7-12
Periodic Replacement of Parts.................................................7-13
Maintenance Guide .....................................................................7-14
Kind of Oils......................................................................................7-20
List of Consumable Parts ...........................................................7-23
A. Greasing......................................................................................7-27
B. Engine..........................................................................................7-32
Check Engine Oil Level.......................................................... 7-32
Change Engine Oil.................................................................. 7-33
Replace Engine Oil Filter.......................................................7-35
Check Crankcase Breather Tube .......................................7-36
Replace Crankcase Air Breather Element .....................7-37
Check Vibration Damper ......................................................7-39
C. Power Train ................................................................................ 7-40
Check Transmission Oil Level..............................................7-40
Change Transmission Oil...................................................... 7-41
Replace Transmission Oil Filter...........................................7-41
Clean Transmission Oil Suction Strainer......................... 7-41
Torque Converter Air Breather........................................... 7-44
Check Axle Oil Level...............................................................7-45
Change Axle Oil.......................................................................7-46
Check Surroundings Around Axle and Covers for Oil
Leaks ......................................................................................7-47
Clean Axle Housing Air Breather.......................................7-47
D. Hydraulic System.....................................................................7-48
Inspection and Maintenance of Hydraulic Equipment... 7-48
Check Hydraulic Oil Level ....................................................7-50
Change Hydraulic Oil/Clean Hydraulic Oil Tank...........7-51
Bleed Air from the Hydraulic System............................... 7-52
Clean Suction Filter ................................................................7-53
Clean Pilot Oil Filter (Brake Circuit)...................................7-54
Clean Pilot Oil Filter (Steering Circuit) .............................7-56
Replace Hydraulic Tank Oil Filter....................................... 7-57
Replace Air Breather Element.............................................7-59
Check Pilot Circuit Accumulator Function, Gas
Leakage, Looseness, and Damage ..............................7-60
Check Ride Control Accumulator Function, Gas
Leakage, Looseness, and Damage ..............................7-61
Check Gas Pressure in Ride Control Accumulator....... 7-61
Check Gas Pressure in Steering Accumulator...............7-61
Check Hoses and Lines .........................................................7-62
E. Fuel System................................................................................ 7-67
Check Fuel Level......................................................................7-67
Recommended Fuel...............................................................7-67
Refueling....................................................................................7-68
Drain Water and Sediment from Fuel Tank.................... 7-69
Drain Fuel Pre-Filter................................................................7-70
Bleed Air from the Fuel System..........................................7-71
Replace Fuel Main Filter Element......................................7-72
Replace Fuel Pre-Filter Element.........................................7-73
Clean Fuel Solenoid Pump Strainer..................................7-74
Check Fuel Hoses .................................................................... 7-76
F. Air Cleaner...................................................................................7-77
Replace Air Cleaner Element (ZW310-6).........................7-77
Clean Air Cleaner Outer Element (ZW330-6) ................7-78
Replace Air Cleaner Outer and Inner Elements
(ZW330-6).............................................................................7-78
Dust Ejection Valve (ZW310-6 Only) ................................7-79
Check Air Inlet System .........................................................7-80
G. Cooling System ........................................................................7-81
Coolant .......................................................................................7-81
Precautions for handling antifreeze.................................7-81
Check Coolant Level .............................................................. 7-83
Check Drive Belt ...................................................................... 7-84
Check Drive Belt Tensioner.................................................. 7-85
Replace DCA4 Coolant Filter Cartridge...........................7-86
Change Coolant.......................................................................7-91
Clean Radiator/Oil Cooler and Other Cooling
System...................................................................................7-93
H. Electrical System......................................................................7-94
Batteries .....................................................................................7-94
Check Monitor Functions and All Other Instrument
Operation .............................................................................7-98
Check Work Lights..................................................................7-99
Check Horn and Reverse Buzzer......................................7-100
Check Electrical Harnesses and Fuses ...........................7-101
Fuse Box A ...............................................................................7-102
Fuse Box B................................................................................7-102
I. Brake System.............................................................................7-103
Check Right and Left Brake Interlocking
Performance......................................................................7-103
Check Parking Brake Force ................................................7-104
Check Accumulator Function, Gas Leakage,
Looseness, and Damage...............................................7-105
Check Gas Pressure in Accumulator...............................7-106
Check Brake Disks (Service and Parking)......................7-106
J. Tire................................................................................................7-107
Check Air pressure................................................................7-107
Adjustment .............................................................................7-107
Check Tire for Damage........................................................7-108
Check Wheel Bolt Torque ...................................................7-108
Removal and Installation of Tire............................................7-111
Tire Wheel................................................................................7-111
K. Air Conditioner .......................................................................7-112
Clean/Replace Air Conditioner Circulation/Fresh
Air Filters.............................................................................7-112
Check Air Conditioner.........................................................7-116

CONTENTS
Check Air Conditioner Piping ...........................................7-116
Check Air Conditioner Condenser..................................7-117
Check Air Conditioner Drive Belt.....................................7-117
Check Refrigerant .................................................................7-118
Replace Air Conditioner Receiver Dryer .......................7-118
Check Compressor and Pulley..........................................7-118
L. Miscellaneous..........................................................................7-119
Check Bucket Teeth and Cutting Edge..........................7-119
Check and Replace Seat and Seat Belt..........................7-120
Check ROPS cab, Resin Cab Roof, and Roof
Mounting Bolts.................................................................7-120
Check Windshield Washer Fluid Level...........................7-120
Check Play Amount in Steering Wheel Stroke............7-121
Check Accelerator Pedal Operation, and Exhaust
Gas Color and Noise .......................................................7-122
Check Rearview Mirror and Inside Rearview
Mirror ...................................................................................7-123
Check Steps and Handrails for Damage and
Looseness...........................................................................7-123
Clean Engine Compartment and Hood ........................7-124
Check Sound Absorbing Mat Around Engine ............7-124
Cleaning of Rear View Camera Lens...............................7-124
Check and Adjust Valve Clearance..................................7-125
Retighten Front Axle and Rear Axle Support
Mounting Bolts.................................................................7-125
Tightening and Retightening Torque of Nuts and
Bolts......................................................................................7-126
M. Aftertreatment Device........................................................7-139
Check and Clean Aftertreatment Device......................7-139
N. Urea SCR System....................................................................7-140
Check DEF/AdBlue®..............................................................7-142
Refill DEF/AdBlue®................................................................7-142
Change DEF/AdBlue® ..........................................................7-144
Replace DEF/AdBlue® Supply Module Main Filter ....7-145
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL
CONDITIONS....................................................................................9-1
Maintenance Under Special Environmental Conditions...9-1
Precautions for Maintenance During Cold Weather
Season............................................................................................9-2
STORAGE ........................................................................................10-1
Storing the Machine.................................................................... 10-1
TROUBLESHOOTING................................................................. 11-1
SPECIFICATIONS .........................................................................12-1
Specifications.................................................................................12-1
Sound Level Results.....................................................................12-2
Electric Fans....................................................................................12-2
OTHER ATTACHMENTS ............................................................13-1
Joystick Steering ................................................................13-1
Joystick Steering (Optional) .....................................................13-1
Joystick Steering Lever .............................................................. 13-2
Forward/Reverse Switch (Left) ................................................13-2
DSS (Down Shift Switch) ........................................................... 13-2
Wiper Switch .................................................................................13-2
Joystick Steering Selector ........................................................ 13-3
Forward/Reverse Switch ...........................................................13-4
Left Console Lock Release Lever ............................................13-5
Adjusting the Switch Box Fore/Aft Position ....................... 13-6
Adjusting the Vertical Height of the Left Console ...........13-6
Left Armrest Angle Adjustment ............................................. 13-6
Switch Box Angle Adjustment ................................................ 13-6
Operating Procedures ................................................................13-7
Descriptions of Warnings .......................................................13-10
Axle Oil Cooler ....................................................................13-12
Axle Oil Cooler (Optional)........................................................13-12
Maintenance Guide of the Axle Oil Cooler ..................13-12
Check Axle Oil Level.............................................................13-13
Change Axle Oil.....................................................................13-14
Replace Axle Oil Filter..........................................................13-15
INDEX............................................................................................... 14-1

CONTENTS
MEMO
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1
MACHINE NUMBERS
The manufacturing Nos. explained in this group is the
individual number (serial No.) given to each machine and
hydraulic components. These numbers are requested when
inquiring any information on the machine and/or components.
Fill these serial Nos. in the blank spaces in this group to
immediately make them available upon request.
Machine
1. Model/Type
2. Homologation Number
3. Product Identification Number
4. Total Permissible Mass (kg)
5. Permissible Front Axle Load (kg)
6. Permissible Rear Axle Load (kg)
7. Permissible Towable Mass (kg)
8. Year of Manufacturing/Manufactured In
9. Rated Power (kW)
10. Permissible Towable Mass Offroad (kg)
11. Tug-Hook Max. Pull (Towing) (N)
12. Tug-Hook Vertical Strain (Lifting) (N)
MNFB-00-001
MNEK-00-003
1
4 8
7
2
5 9
610
3
1
3
9
6
4
8
7
2
5
10
MNHG-00-03K
1
39
4
8
12 6
5
11
MNHG-00-02K

MACHINE NUMBERS
2
Engine
TYPE :
MFG. NO. :
Aftertreatment Device
SCR
TYPE :
MFG. NO. :
DOC
TYPE :
MFG. NO. :
90Z7B_SCR_SN
90Z7B_SCR_SN
QSL9-4B_plate

1
INTENDED USE
Intended Use
This machine is designed and intended to be used for loading and carrying material with a bucket or working with tools/
attachments described in this manual or approved in writing by the manufacturer.
Risk assessment related to the specific application and working conditions of the machine may require additional safety
measures such as protective guards, filtration of cabin air, etc. to be installed, enabling the machine to be operated safely
under the specific conditions. Consult your authorized dealer for further information on possibilities to adapt the machine
accordingly.
Local regulations and instructions must be respected when using the machine. Using this machine and its equipment for
operations other than those intended or approved by the manufacturer, are prohibited.
Modifications
No modification affecting the intended use or structural integrity and therefore safety of the machine should be made
without written approval of the manufacturer. Modifications which are not approved include the use of unauthorized
accessories, assemblies, parts or attachments, including but not limiting to those connected with a coupling device.
Any legal or natural person performing unapproved modifications to the machine assumes all liability directly or
indirectly related to the modification.
The manufacturer reserves the right to reject any warranty claim arising from or related to unapproved modifications.

INTENDED USE
2
MEMO
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S-1
SAFETY
Recognize Safety Information
These are the SAFETY ALERT SYMBOLS.
When you see these symbols on your machine or in this
manual, be alert to the potential for personal injury.
Follow recommended precautions and safe operating
practices.
Understand Signal Words
On machine safety signs, signal words designating the
degree or level of hazard - DANGER, WARNING, or CAUTION
- are used with the safety alert symbol.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury.
DANGER or WARNING safety signs are located near
specific hazards. General precautions are listed on
CAUTION safety signs.
Some safety signs are occasionally used on this machine
that do not use any of the designated signal words
mentioned above after the safety alert symbol.
To avoid confusing machine protection with personal
safety messages, a signal word IMPORTANT indicates a
situation which, if not avoided, could result in damage to
the machine.
fNOTE Indicates an additional explanation for an a piece
of information.
SA-1223
SA-2644

SAFETY
S-2
Follow Safety Instructions
Carefully read and follow all safety signs on the machine
and all safety messages in this manual.
Safety signs should be installed, maintained and replaced
when necessary.
If a safety sign or this manual is damaged or missing,
order a replacement from your authorized dealer in the
same way you order other replacement parts (be sure to
state machine model and serial number when ordering).
Learn how to operate the machine and its controls correctly
and safely.
Allow only trained, qualified, authorized personnel to
operate the machine.
Keep your machine in proper working condition.
Unauthorized modifications of the machine may impair
its function and/or safety and affect machine life.
Do not modify any machine parts without authorization.
Failure to do so may deteriorate the safety, function, and/
or service life of the part. In addition, personal accident,
machine trouble, and/or damage to material caused by
unauthorized modifications will void Hitachi Warranty
Policy.
Never attempt to modify or disassemble the inlet/exhaust
parts and the aftertreatment device. Avoid shocks to the
element of the aftertreatment device, such as striking
or dropping objects onto the elements. Failure to do so
may affect the exhaust gas purifying device, possibly
damaging it or lowering its performance.
Do not use attachments and/or optional parts or
equipment not authorized by Hitachi. Failure to do so
may deteriorate the safety, function, and/or service life
of the machine. In addition, personal accident, machine
trouble, and/or damage to material caused by using
unauthorized attachments and/or optional parts or
equipment will void Hitachi Warranty Policy.
The safety messages in this SAFETY chapter are intended
to illustrate basic safety procedures of machines. However
it is impossible for these safety messages to cover every
hazardous situation you may encounter. If you have any
questions, you should first consult your supervisor and/
or your authorized dealer before operating or performing
maintenance work on the machine.
SA-003

SAFETY
S-3
Prepare for Emergencies
Be prepared for a fire or an accident.
Keep a first aid kit and fire extinguisher on hand.
Thoroughly read and understand the label attached on
the fire extinguisher to use it properly.
To ensure that a fire extinguisher can be always used
when necessary, check and service the fire extinguisher
at the recommended intervals as specified in the fire
extinguisher manual.
Establish emergency procedure guidelines to cope with
fires and accidents.
Keep emergency numbers for doctors, ambulance
service, hospital, and fire department posted near your
telephone.
Wear Protective Clothing
Wear close fitting clothing and safety equipment
appropriate to the job.
You may need:
A hard hat
Safety shoes
Safety glasses, goggles, or face shield
Heavy gloves
Hearing protection
Reflective clothing
Wet weather gear
Respirator or filter mask.
Be sure to wear the correct equipment and clothing for the
job. Do not take any chances.
Avoid wearing loose clothing, jewelry, or other items that
can catch on control levers or other parts of the machine.
Operating equipment safely requires the full attention of
the operator. Do not wear radio or music headphones while
operating the machine.
SA-438
SA-437

SAFETY
S-4
Protect Against Noise
Prolonged exposure to loud noise can cause impairment or
loss of hearing.
Wear a suitable hearing protective device such as
earmuffs or earplugs to protect against objectionable or
uncomfortably loud noises.
Inspect Machine
Inspect your machine carefully each day or shift by walking
around it before you start it to avoid personal injury.
In the walk-around inspection, be sure to cover all points
described in the “Inspect Machine Daily Before Starting”
section in the operator’s manual.
SA-435
SA-434

SAFETY
S-5
General Precautions for the Cab
Before entering the cab, thoroughly remove all dirt and/
or oil such as mud, grease, soil or stones from the soles
of your work boots. If any controls such as a pedal is
operated while with dirt and/or oil on the soles of the
operator’s work boots, the operator’s foot may slip off the
pedal, possibly resulting in a personal accident.
Do not make a mess around the operator's seat with
parts, tools, soil, stones or other, obstacles that may fold
up or turn over such as cans or lunch box. The levers or
pedals become inoperable if an obstacle jams during the
operation stroke of the accelerator pedal, brake pedals,
control lever lock switch or control levers, which may
result in serious injury or death.
Avoid storing transparent bottles in the cab. Do not
attach any transparent type window decorations on
the windowpanes as they may focus sunlight, possibly
starting a fire.
Refrain from listening to the radio, or using music
headphones or mobile telephones in the cab while
operating the machine.
Keep all flammable objects and/or explosives away from
the machine.
After using the ashtray, always cover it to extinguish the
match and/or tobacco.
Do not leave cigarette lighters in the cab. When the
temperature in the cab increases, the lighter may
explode.
Correctly lay the floor mat specific to the machine. If
another floor mat is used, it may be displaced and contact
with the accelerator or brake pedals during operation,
resulting in serious injury or death.

SAFETY
S-6
Use Handrails and Steps
Falling is one of the major causes of personal injury.
When you get on and off the machine, always face the
machine and maintain a three-point contact with the
steps and handrails.
Do not use any controls as handholds.
Never jump on or off the machine. Never mount or
dismount a moving machine.
Before getting on or off the machine, check the condition
of the steps and handrails for sticking of slippery material
like grease or mud. Thoroughly remove such material if
stuck. In addition, repair the damage to the steps and/or
handrails. Retighten loose bolts.
Never get on and off the machine with tools in your
hands.
Never Ride Attachment
Never allow anyone to ride on attachment or the load. This
is an extremely dangerous practice.
Adjust Operator’s Seat
A seat which is poorly adjusted for the individual operator,
or the work to be undertaken, may quickly fatigue the
operator leading to misoperation.
The seat should be adjusted whenever the operator of the
machine changes.
The operator should be able to fully depress the pedals
and to correctly operate the control levers with his back
against the seat back.
If not, move the seat forward or backward, and check
again.
Adjust the rear view mirror position so that the best rear
visibility is obtained from the operator’s seat. If the mirror
is broken, immediately replace it with a new one.
SA-439
SA-462