Hitachi Zaxis 345USLC-6N User manual

ENMDD5-NA1-1ZX345USLC-6N HYDRAULIC EXCAVATOR OPERATOR'S MANUAL
URL:http://www.hitachi-c-m.com
Serial No. 010001 and up
ENMDD5-NA1-1
PART NO.
Operator's Manual
345USLC-6N
Hydraulic Excavator
This book is printed on recycled paper. PRINTED IN JAPAN (E) 2017, 12

©2017 Hitachi Construction Machinery Co., Ltd.
All rights reserved.
INTRODUCTION
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.
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 authorized 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.
Be sure to use fuel that complies with JIS K-2204, EN-590
or ASTM D-975 which contains 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 authorized 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 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).

INDEX
ENMDD5-NA1-1
MACHINE NUMBERS
SAFETY
VISIBILITY MAP
SAFETY SIGNS
NAME OF COMPONENTS
GETTING ON AND OFF THE MACHINE
OPERATOR’S STATION
BREAK-IN
OPERATING THE ENGINE
DRIVING THE MACHINE
OPERATING THE MACHINE
TRANSPORTING
MAINTENANCE
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
STORAGE
TROUBLESHOOTING
SPECIFICATIONS
OPTIONAL ATTACHMENTS AND DEVICES
INDEX

CONTENTS
MACHINE NUMBERS .........................................................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 Handholds and Steps ............................................................S-6
Adjust the 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
Operate Only from Operator's Seat ..........................................S-8
Jump Starting ...................................................................................S-9
Keep Riders off Machine ...............................................................S-9
Precautions for Operations.......................................................S-10
Investigate Job Site Beforehand ............................................. S-11
Install OPG Guard......................................................................... S-12
Restriction of Attachment Installation ................................. S-12
Provide Signals for Jobs Involving Multiple Machines....S-13
Confirm Direction of Machine to Be Driven........................ S-13
Drive Machine Safely................................................................... S-14
Avoid Injury from Rollaway Accidents..................................S-16
Avoid Injury from Back-Over and Swing Accidents ......... S-17
Keep People Clear from Working Area ................................. S-18
Never Position the Bucket Over Anyone.............................. S-18
Avoid Undercutting..................................................................... S-19
Avoid Tipping................................................................................. S-19
Never Undercut a High Bank.................................................... S-20
Dig with Caution........................................................................... S-20
Operate with Caution ................................................................. S-20
Avoid Power Lines........................................................................ S-21
Precautions for Lightning.......................................................... S-21
Object Handling ........................................................................... S-22
Protect Against Flying Debris .................................................. S-22
Park Machine Safely..................................................................... S-23
Handle Fluids Safely−Avoid Fires............................................ S-23
Transport Safely ............................................................................ 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
Prevent Parts from Flying .......................................................... S-27
Avoid Injury from Attachment Falling Accident ............... 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-33
Avoid Heating Near Pressurized Fluid Lines ....................... S-34
Avoid Applying Heat to Lines Containing
Flammable Fluids.................................................................... S-34
Precautions for Handling Accumulator and
Gas Damper .............................................................................. S-34
Remove Paint Before Welding or Heating........................... S-35
Beware of Asbestos and Silica Dust and Other
Contamination......................................................................... S-35
Prevent Battery Explosions ....................................................... S-36
Service Air Conditioning System Safely ............................... S-36
Handle Chemical Products Safely........................................... S-37
Dispose of Waste Properly......................................................... S-37
Never Ride Attachment.............................................................. S-38
Notes on Aftertreatment Device ............................................S-38
Precautions for Communication Terminal........................... S-38
Precautions for Communication Terminal Equipment ... S-39
Notes on Protection of Operator’s Station when the
Machine Rolls Over................................................................. S-41
VISIBILITY MAP ........................................................... S-42
SAFETY SIGNS ............................................................. S-43
NAME OF COMPONENTS .............................................. 1-1
Name of Components ...................................................................1-1
GETTING ON AND OFF THE MACHINE ......................... 1-2
OPERATOR'S STATION................................................... 1-3
About Aftertreatment Device.....................................................1-3
Cab Features......................................................................................1-6
Multi Function Monitor.................................................................1-7
Default Setting .................................................................................1-8
Basic Screen.......................................................................................1-9
How to Use Screens.....................................................................1-10
Displaying Basic Screen........................................................ 1-10
Hour Meter................................................................................ 1-13
Clock............................................................................................1-13
Fuel Gauge ................................................................................1-13
DEF/AdBlue® Gauge............................................................... 1-14
DEF/AdBlue® Level Alarm ...................................................1-14
Coolant Temperature Gauge .............................................. 1-15
Operating Status Icon Display............................................ 1-15
Security Functions (Optional).................................................. 1-16
Input Password ........................................................................ 1-16
Extending Password Duration Time.................................1-17
Alarm Occurrence Screen.......................................................... 1-18
Remedy............................................................................................1-20
Urea SCR System Remedy .........................................................1-23
Aftertreatment Device................................................................ 1-25
Aftertreatment Device Condition Display ..................... 1-25
Aftertreatment Device Manual Regeneration
Request .................................................................................1-26
Manual Regeneration Procedure ...................................... 1-27
Main Menu......................................................................................1-28
Engine Output Restriction Suspend...................................... 1-29
Urea SCR System Troubleshooting......................................... 1-31
Air Conditioner.............................................................................. 1-33
Circulation Air Mode.............................................................. 1-33

CONTENTS
Air Conditioner ON/OFF....................................................... 1-33
Radio................................................................................................. 1-34
Work Mode .....................................................................................1-35
Attachment Selection ........................................................... 1-35
Setting Menu .................................................................................1-36
Date and Time................................................................................1-37
Time Adjustment ....................................................................1-37
Date Adjustment..................................................................... 1-39
Display Mode Setting............................................................1-41
Attachment Adjustment............................................................ 1-43
Flow Rate Adjustment...........................................................1-43
Priority (arm roll-out)............................................................. 1-45
Priority (arm roll-in)................................................................1-47
Attachment Name Input............................................................ 1-49
Auto Shut-Down...........................................................................1-51
Auto Shut-Down: ON/OFF ................................................... 1-51
Auto Shut-Down: Setting Time..........................................1-52
Aftertreatment Device Regeneration Inhibited................ 1-53
Setting Procedure...................................................................1-53
Password Change (Optional)....................................................1-55
Sub Meter........................................................................................1-59
Rear View Camera Monitor ....................................................... 1-61
Rear View Camera ON (Factory Setting: ON)................. 1-61
Brightness Adjustment...............................................................1-63
Language Settings.......................................................................1-65
Lists of Display Language..........................................................1-67
Unit Selection ................................................................................1-68
Display Item Selection (Rear View Camera OFF)...............1-70
Main Menu Sequence Change ................................................ 1-72
Information Menu........................................................................1-74
Operation ........................................................................................ 1-75
Fuel Consumption ..................................................................1-75
Breaker Operation ..................................................................1-77
Attachment Operation..........................................................1-79
Travel Operation......................................................................1-81
Actual operation ..................................................................... 1-83
Maintenance ..................................................................................1-85
Remaining Time and Maintenance Interval .................. 1-87
Monitoring......................................................................................1-89
Switch Panel................................................................................... 1-91
Return to Previous Screen Switch (Monitor).................1-92
Return to Basic Screen Switch (Monitor)........................ 1-92
Selector Knob (Monitor)....................................................... 1-92
Temperature Control Switch/Mode Switch (Air
Conditioner) ........................................................................1-92
AUTO/OFF Switch/Fan Switch (Air Conditioner).......... 1-92
AM/FM Selector/Tuning Switch (Radio).......................... 1-93
Power Switch/Volume Control Knob (Radio)................ 1-93
Engine Control Dial ................................................................1-93
Auto-Idle Switch...................................................................... 1-94
Travel Mode Switch................................................................1-94
Power Mode Switch ............................................................... 1-95
Work Light Switch................................................................... 1-95
Wiper/Washer Switch ............................................................1-96
Numeric Keypad...................................................................... 1-97
Switch Panel (for Optional Equipments).............................. 1-98
Travel Alarm Deactivation Switch (Optional)................ 1-99
Rear Light Switch (Optional)...............................................1-99
Seat Heater Switch (Optional) ............................................ 1-99
Electrical Control Main Switch (Optional) ....................1-100
Key Switch.....................................................................................1-101
Power Boost Switch...................................................................1-101
Horn Switch..................................................................................1-101
Electrical Control Main Switch (Optional)..........................1-102
Cigar Lighter.................................................................................1-103
Using Cigar Lighter...............................................................1-103
Using Cigar Lighter Port as External Power
Source..................................................................................1-103
Cab Light Switch.........................................................................1-104
Pilot Control Shut-Off Lever ...................................................1-105
Engine Stop Switch....................................................................1-105
Fuse Box.........................................................................................1-106
Auto Air Conditioner .................................................................1-107
Features:...................................................................................1-107
Name of Components.........................................................1-108
Controller Part Name and Function ...............................1-109
Cab Heater Operation .........................................................1-111
Cooling Operation................................................................1-112
Defroster Operation.............................................................1-113
Cool Head/Warm Feet Operation....................................1-113
Tips for Optimal Air Conditioner Usage .............................1-114
For Rapid Cooling .................................................................1-114
When Windows Become Misty.........................................1-114
Off-Season Air Conditioner Maintenance....................1-114
AM/FM Radio Operation..........................................................1-115
Controls on the Radio..........................................................1-115
Tuning Procedure .................................................................1-115
Station Presetting Procedure............................................1-116
Station Auto-Presetting Procedure ................................1-117
TONE Control..........................................................................1-118
Audio Input...................................................................................1-119
Side View Camera System (Optional)..................................1-120
Content of Monitor Display ....................................................1-122
Adjusting the Position of the Side Camera Monitor......1-123
Cab Door Release Lever ...........................................................1-124
Opening/Closing and Removing Cab Inside
Window ....................................................................................1-125
Opening Upper Front Window..............................................1-126
Removing and Storing Lower Front Window...................1-127
Opening Side Window..............................................................1-128
Opening/Closing Overhead Window (Clear Hatch).......1-129
Emergency Exit ...........................................................................1-130
Console Height Adjustment...................................................1-131
Adjusting Procedures..........................................................1-131
Adjusting Operator's Seat .......................................................1-132
Seat Height and Angle Adjustment ...............................1-132
Console and Seat Fore-aft Adjustment.........................1-132
Seat Fore-Aft Adjustment ..................................................1-132
Suspension Adjustment .....................................................1-132
Backrest Adjustment ...........................................................1-133
Armrest Adjustment ............................................................1-133
Installation and Adjustment of Mirrors ..............................1-134

CONTENTS
Mirror Installation Diagram...............................................1-135
Seat Belt.........................................................................................1-138
Battery Disconnect Switch......................................................1-139
Switch Operation ..................................................................1-140
BREAK-IN ....................................................................... 2-1
Observe Engine Operation Closely...........................................2-1
Every 8 Hours or Daily....................................................................2-1
After the First 50 Hours .................................................................2-1
After the First 100 Hours...............................................................2-1
OPERATING THE ENGINE .............................................. 3-1
Inspect Machine Daily Before Starting ....................................3-1
Before Starting Engine ..................................................................3-2
Starting the Engine.........................................................................3-3
Check Instruments After Starting..............................................3-9
Using Booster Batteries.............................................................. 3-10
Stopping the Engine ................................................................... 3-12
Engine Auto-Stop in Extremely Low Temperature........... 3-13
DRIVING THE MACHINE ................................................ 4-1
Travel Levers and Pedals...............................................................4-1
Travel Mode Switch ........................................................................4-3
Operating on Soft Ground ...........................................................4-4
Raise One Track Using Boom and Arm ....................................4-4
Towing Machine a Short Distance.............................................4-5
Operating in Water or Mud..........................................................4-6
Parking the Machine on Slopes..................................................4-7
Parking the Machine ......................................................................4-7
OPERATING THE MACHINE........................................... 5-1
Control Lever (ISO Pattern) ..........................................................5-1
Pilot Control Shut-Off Lever ........................................................5-2
Warming-Up Operation ................................................................5-3
Engine Speed Control....................................................................5-4
Auto-Idle.............................................................................................5-5
Auto-Idle ON/OFF......................................................................5-6
Auto Shut-Down..............................................................................5-7
Aftertreatment Device Manual Regeneration ...................5-10
Work Mode .....................................................................................5-12
Power Boost Switch.....................................................................5-15
Power Mode ...................................................................................5-16
Operating Backhoe...................................................................... 5-17
Face Shovel..................................................................................... 5-18
Grading Operation....................................................................... 5-19
Do Not Strike the Ground with Bucket Teeth..................... 5-20
Avoid Hammer Work ................................................................... 5-20
Avoid Abusive Operation .......................................................... 5-21
Never Move an Object Sideways with the Bucket............5-21
Do Not Use Wide Track Shoes on Rough Ground .............5-22
Shackle Hole Usage ..................................................................... 5-23
How to Lower Boom in Case of Emergency and When
Engine Stops............................................................................. 5-24
Precautions for After Operations............................................5-25
TRANSPORTING ............................................................ 6-1
Transporting by Road ....................................................................6-1
Loading/Unloading on a Trailer .................................................6-2
Fastening Machine for Transporting ........................................6-5
Unloading ..........................................................................................6-5
Lifting Machine ................................................................................6-7
MAINTENANCE.............................................................. 7-1
Correct Maintenance and Inspection Procedures...............7-1
Layout..................................................................................................7-3
Check the Hour Meter Regularly................................................7-4
Maintenance Guide Table .......................................................7-5
Preparations for Inspection and Maintenance .....................7-7
Hood and Access Covers...............................................................7-8
Maintenance Guide ........................................................................7-9
Periodic Replacement of Parts.................................................7-15
Kind of Oils...................................................................................... 7-16
Recommended Engine Oil...................................................7-16
List of Consumable Parts ...........................................................7-19
A. Greasing......................................................................................7-21
Front Joint Pins ........................................................................ 7-21
Swing Bearing .......................................................................... 7-23
Swing Internal Gear................................................................7-24
B. Engine.......................................................................................... 7-25
Check Engine Oil Level..........................................................7-25
Change Engine Oil .................................................................7-27
Replace Engine Oil Filter....................................................... 7-27
Check and Clean Around the Engine...............................7-29
C. Transmission.............................................................................. 7-30
Pump Transmission ................................................................ 7-30
Swing Reduction Gear ..........................................................7-31
Travel Reduction Gear...........................................................7-32
D. Hydraulic System..................................................................... 7-34
Inspection and Maintenance of Hydraulic Equipment...7-34
Check Hydraulic Oil Level ....................................................7-38
Change Hydraulic Oil............................................................. 7-39
Bleed Air from the Hydraulic System...............................7-41
Suction Filter Cleaning.......................................................... 7-42
Replace Full-Flow Filter......................................................... 7-43
Replace Pilot Oil Filter............................................................7-44
Replace Air Breather Element............................................. 7-45
Check Hoses and Lines .........................................................7-46
E. Fuel System ................................................................................ 7-50
Recommended Fuel...............................................................7-50
Drain Fuel Tank Sump............................................................ 7-52
Drain Fuel Pre-Filter................................................................7-53
Replace Fuel Main Filter Element...................................... 7-56
Replace Fuel Pre-Filter Element......................................... 7-58
Check Fuel Hoses .................................................................... 7-60
F. Air Cleaner...................................................................................7-61
Clean and Replace Air Cleaner Element (Outer).......... 7-61
Replace Air Cleaner Element (Inner) ................................7-63
G. Cooling System ........................................................................7-64
Check Coolant Level ..............................................................7-65
Check and Adjust Fan Belt Tension...................................7-67
Change Coolant.......................................................................7-68
Clean Radiator/Oil Cooler/Inter Cooler Core................. 7-70
Clean Oil Cooler, Radiator and Inter Cooler Front
Screen.................................................................................... 7-72
Clean Air Conditioner Condenser.....................................7-72
Clean Fuel Oil Cooler ............................................................. 7-72

CONTENTS
H. Electrical System......................................................................7-73
Battery......................................................................................... 7-74
Replace Battery........................................................................ 7-77
Check Electrolyte Specific Gravity .................................... 7-78
Replacing Fuses....................................................................... 7-79
Fuse Box........................................................................................... 7-80
I. Miscellaneous............................................................................. 7-82
Check and Replace Bucket Teeth ...................................... 7-82
Change Bucket.........................................................................7-84
Convert Bucket Connection Into Face Shovel..............7-85
Adjust Bucket Linkage ..........................................................7-86
Remove Travel Levers ............................................................ 7-87
Check and Replace Seat Belt...............................................7-87
Check Windshield Washer Fluid Level............................. 7-88
Check Track Sag.......................................................................7-89
Clean and Replace Air Conditioner Filter ....................... 7-92
Check Air Conditioner...........................................................7-94
Clean Cab Floor........................................................................ 7-96
Retighten Cylinder Head Bolt.............................................7-97
Inspect and Adjust Valve Clearance................................. 7-97
Measure Engine Compression Pressure..........................7-97
Check Starter and Alternator.............................................. 7-97
Check and Replace EGR Device ......................................... 7-97
EGR Cooler Cleaning.............................................................. 7-97
Check Turbo Charger.............................................................7-97
Check and Clean Injector ..................................................... 7-98
Check Gas Damper.................................................................7-98
Tightening and Retightening Torque of
Nuts and Bolts.....................................................................7-98
J. Aftertreatment Device..........................................................7-117
Check and Clean Aftertreatment Device......................7-117
K. Urea SCR System....................................................................7-118
Check DEF/AdBlue®..............................................................7-120
Refill DEF/AdBlue®................................................................7-120
Clean Filler Port Strainer.....................................................7-122
Change DEF/AdBlue® ..........................................................7-123
Replace DEF/AdBlue® Supply Module Main Filter ....7-124
Replace DEF/AdBlue® Tank Water Supply Inlet
Filter......................................................................................7-126
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL
CONDITIONS ................................................................. 9-1
Maintenance Under Special Environmental Conditions...9-1
STORAGE ..................................................................... 10-1
Storing the Machine.................................................................... 10-1
TROUBLESHOOTING................................................... 11-1
Troubleshooting ...........................................................................11-1
SPECIFICATIONS ......................................................... 12-1
Specifications.................................................................................12-1
ZX345USLC-6N.........................................................................12-1
Working Ranges............................................................................12-2
ZX345USLC-6N.........................................................................12-2
Shoe Types and Applications................................................... 12-3
ZX345USLC-6N.........................................................................12-3
Bucket Types and Applications ...............................................12-4
ZX345USLC-6N.........................................................................12-4
OPTIONAL ATTACHMENTS AND DEVICES................. 13-1
Control Lever (H Type) (Optional)........................................... 13-1
CONTROL LEVER (2 Way Multi Valve) (Optional) ............... 13-2
Attachment Pedal (Hydraulic Breaker) (Optional)............ 13-4
Attachment Pedal (Hydraulic Crusher) (Optional)............13-5
Hydraulic Breaker, Hydraulic Crusher and Quick
Coupler ....................................................................................... 13-6
Piping for Breaker and Crusher ...............................................13-7
Operational Procedures for Stop Valves and Selector
Valve. ...........................................................................................13-7
Secondary Relief Pressure Adjustment ................................ 13-8
Precautions for Breaker Operation......................................... 13-9
Change Hydraulic Oil and Replace Full-Flow Filter
Element ....................................................................................13-13
Precautions for Crusher Operation ......................................13-14
Attachment...................................................................................13-17
Allowable Weight Limits of Installed Attachment ....13-17
Attachment Connection Parts...............................................13-19
Precautions for Arm Roll-In/Bucket Roll-In Combined
Operation.................................................................................13-21
INDEX........................................................................... 14-1

1
The manufacturing Nos. explained in this group is the
individual number (serial No.) given to each machine and main
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
TYPE :
PRODUCT
IDENTIFICATION
NUMBER :
Product Identification Number
fNOTE:
*HCMDATA0000100001*
Engine
TYPE :
MFG. NO. :
Marks to indicate the
start and end of the PIN
PRODUCT IDENTIFICATION NUMBER (PIN)
MACHINE NUMBERS
M157-00-001
MDAA-00-001
MDD5-00-001

MACHINE NUMBERS
2
SCR (Selective Catalytic Reduction) Catalyst
TYPE :
MFG. NO. :
MDC1-01-510

MACHINE NUMBERS
3
DOC (Diesel Oxidation Catalyst)
TYPE :
MFG. NO. :
TYPE :
MFG. NO. :
MDC1-01-510

MACHINE NUMBERS
4
Travel Motor
TYPE :
MFG. NO. :
Swing Motor
TYPE :
MFG. NO. :
M178-07-047
M178-07-086

MACHINE NUMBERS
5
Hydraulic Pump
TYPE :
MFG. NO. :
MDD5-00-002

MACHINE NUMBERS
6
MEMO
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S-1
SAFETY
SA-1223
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 a piece of
information.
SA-2644

SAFETY
S-2
SA-003
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 element. 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.

SAFETY
S-3
SA-437
SA-438
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.

SAFETY
S-4
SA-435
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-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 mess up around the operator’s seat with parts,
tools, soil, stones, obstacles that may fold up or turn
over, cans or lunch box. The levers or pedals become
inoperable if obstacle jams in operation stroke of the
travel levers/pedals, pilot control shut-off lever 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 materials 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 travel pedals during operation, resulting
in serious injury or death.

SAFETY
S-6
SA-439
SA-378
Use Handholds 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 hand-holds.
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
stack. 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.
Adjust the 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.