Komatsu PC360LC-11 Manual

CEAM028804
Operation&Maintenance
Manual
PC360LC -11
PC390LC -11
SERIAL NUMBERS PC360LC-11 A35001 and up
PC390LC-11 A30401and up
ENGINE
6D114E-6
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in
accordance with written authorization from Komatsu America Corp.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make
changes or improvements at any time without incurring any obligation to install such changes on products sold
previously.
Due to this continuous program of research and development, revisions may be made to this publication. It is
recommended that customers contact their distributor for information on the latest revision.
Copyright 2016 Komatsu
Printed in U.S.A.
Komatsu America Corp.
March 2016

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FOREWORD
1-1
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BEFORE READING THIS MANUAL
This manual gives details of the operation and methods of inspection and maintenance for this machine that
must be obeyed in order to use the machine safely. Most accidents are caused by the failure to follow funda-
mental safety rules for the operation and maintenance of machines.
Read, understand and follow all precautions and warnings in this manual and on the machine before performing
operation and maintenance. Failure to do so may result in serious injury or death.
Komatsu cannot predict every circumstance that might involve a potential hazard when the machine is used.
Therefore, the safety messages in this manual and on the machine may not include all possible safety precau-
tions.
If you perform any operation, inspection, or maintenance under conditions that are not described in this manual,
understand that it is your responsibility to take the necessary precautions to ensure safety. In no event should
you or others engage in the prohibited uses or actions described in this manual. It is dangerous to perform im-
proper operation and maintenance of the machine. It may cause serious injury or death.
If you sell the machine, be sure to give this manual to the new owner together with the machine.
Always keep this Operation and Maintenance Manual in the indicated location so that all relevant personnel can
read it at any time.
Keep it in the magazine box on the left side of the operator's
seat.
If this manual is lost or damaged, contact Komatsu or your Komatsu distributor and tell them about the machine
model name and the serial No. immediately to arrange for its replacement.
For details regarding the machine model name and the serial No., see the machine serial No. plate. In order to
arrange the proper Operation and Maintenance Manual, you will need to provide the machine model name and
the serial No.
This manual uses the International System of Units (SI) for units of measurement. For reference, units that have
been used in the past are given in { }.
The explanations, values, and illustrations in this manual have been prepared based on the latest information
available as of the date of its publication. Continuing improvements in the design of this machine may lead to
additional changes that are not reflected in this manual. If there is any question or suggestion, consult your Ko-
matsu distributor.
The numbers in the illustrations correspond to the numbers in ( ) in the text. (Example: 1 → (1))
Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it
has been shipped. If this machine has been purchased in another country, it may lack certain safety devices and
specifications that are necessary for use in your country. If there is any question about whether your product
complies with the applicable standards and regulations of your country, consult your Komatsu distributor before
operating the machine.
BEFORE READING THIS MANUAL FOREWORD
1-2
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SAFETY INFORMATION
To enable you to use the machine safely, and to prevent personal injury to operators, service personnel or by-
standers, the precautions and warnings included in this manual and the safety signs attached to the machine
must always be observed.
To identify important safety messages in the manual and on the machine labels, the following signal words are
used.
The "Safety Alert Symbol" identifies important safety messages on machines, in manuals, and elsewhere. When
you see this symbol, be alert to the risk of personal injury or death. Follow the instructions in the safety mes-
sage.
This signal word indicates an imminently hazardous situation which, if not avoided, will result
in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury. It may also be used to alert against unsafe practices that may
cause property damage.
The following signal words are used to alert you to information that must be followed to avoid damage to the
machine.
If precautions described are not observed, the machine may be damaged or the service life
may be reduced.
This word is used for information that is useful to know.
FOREWORD SAFETY INFORMATION
1-3
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INTRODUCTION
MAIN USE OF MACHINE
This Komatsu machine is designed to be used mainly for the following work:
• Digging work
• Ditching work
• Loading work
• Leveling work
• Demolition work
For details of work procedure, see MACHINE OPERATIONS AND CONTROLS “RECOMMENDED APPLICA-
TIONS (3-218)”.
DIRECTIONS OF MACHINE
(A) Front
(B) Rear
(C) Left
(D) Right
(E) Operator's seat
(F) Sprocket
In this manual, the terms front, rear, left, and right refer to the travel direction as seen from the operator's seat
when the operator's seat is facing the front and the sprocket is at the rear of the machine.
INTRODUCTION FOREWORD
1-4
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VISIBILITY FROM OPERATOR'S SEAT
The visibility of this machine required by visibility standards (ISO 5006) are shown in the drawing below.
Proximity visibility
The figure below shows a visibility from the machine at a spot 1.0 ｍ away from outside the machine and 1.5 ｍ
above the ground.
12 m radius visibility
The figure below shows a visibility from the machine for a radius of 12 m. Shaded area (A) in the figure shows
an area whose view is blocked when the machine is equipped with the mirrors and other visibility assistant devi-
ces. Be fully aware that there is an area where the operator cannot see when operating the machine.
Protective structures
This machine is equipped with a structure to protect the operator (ROPS) conforming to ISO12117-2.
FOREWORD INTRODUCTION
1-5
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ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS
EMISSION
About Engine Technology
This engine technology combines a Komatsu Diesel Particulate Filter (KDPF) and Komatsu’s Urea Selective
Catalytic Reduction (SCR) to conform EPA Tier4 Final emission regulation in North America.
• Komatsu Diesel Particulate Filter (KDPF): A device which captures diesel particular matter or soot in the
exhaust gas to purify exhaust gas. If soot is accumulated to a certain level in the filter, a purification process
to burn the soot is performed automatically to keep the filtering performance of KDPF high.
• Komatsu’s Urea SCR system: A device which decomposes the toxic nitrogen oxides (NOx) mixed in the
exhaust gas into harmless nitrogen and water. Spraying the reagent (Diesel Exhaust Fluid) into the exhaust
gas produces a reaction between the nitrogen oxides and ammonia generated from the urea solution and
decomposes the nitrogen oxides into nitrogen and water.
About Diesel Exhaust Fluid (DEF)
Diesel Exhaust Fluid is the aqueous urea solution for the SCR system.
DEF is the abbreviation for Diesel Exhaust Fluid, and is represented as DEF throughout this manual.
DEF is a colorless transparent and aqueous urea solution made with 32.5 % urea (AUS32) and 67.5 % deion-
ized water. Urea as main constituent is a material which is used for cosmetics, medical and pharmaceutical
products, and fertilizer, etc.
Commercial DEF, that is API (American Petroleum Institute) certified and fulfills the quality requirements in ac-
cordance with ISO 22241-1, is to be used. The certified DEF has the API DIESEL EXHAUST FLUID Certifica-
tion Mark shown as follows. Look for the API DEF Certification Mark when purchasing DEF.
API Diesel Exhaust Fluid Certification Mark is the trade mark of
API (American Petroleum Institute).
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION FOREWORD
1-6
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PRODUCT INFORMATION
When requesting service or ordering replacement parts, inform your Komatsu distributor of the following items.
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERI-
AL NO. PLATE
It is located on the right bottom of the operator's cab.
The design of the nameplate differs according to the district.
LOCATION OF ENGINE NUMBER PLATE
They are on top of the engine cylinder head cover.
FOREWORD PRODUCT INFORMATION
1-7
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SERVICE METER LOCATION
This is displayed on the machine monitor.
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR
Machine serial No.
Engine serial No.
Product identification
number (PIN)
Distributor name
Address
Phone/Fax
Service personnel
PRODUCT INFORMATION FOREWORD
1-8
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TABLE OF CONTENTS
FOREWORD.................................................................................................................................................... 1-1
BEFORE READING THIS MANUAL ......................................................................................................... 1-2
SAFETY INFORMATION .......................................................................................................................... 1-3
INTRODUCTION ...................................................................................................................................... 1-4
MAIN USE OF MACHINE .................................................................................................................. 1-4
DIRECTIONS OF MACHINE.............................................................................................................. 1-4
VISIBILITY FROM OPERATOR'S SEAT ............................................................................................ 1-5
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION..................................................... 1-6
PRODUCT INFORMATION....................................................................................................................... 1-7
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE ........ 1-7
LOCATION OF ENGINE NUMBER PLATE ........................................................................................ 1-7
SERVICE METER LOCATION........................................................................................................... 1-8
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR.............................................................. 1-8
SAFETY........................................................................................................................................................... 2-1
SAFETY.................................................................................................................................................... 2-2
SAFETY LABELS ..................................................................................................................................... 2-4
LOCATION OF SAFETY LABELS...................................................................................................... 2-5
CONTENTS OF SAFETY LABELS .................................................................................................... 2-7
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE .................................... 2-16
PRECAUTIONS BEFORE STARTING OPERATION........................................................................ 2-16
PREPARATIONS FOR SAFE OPERATION ..................................................................................... 2-16
PRECAUTIONS TO PREVENT FIRE............................................................................................... 2-18
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE............................................................. 2-20
DO NOT GET CAUGHT IN WORK EQUIPMENT ............................................................................ 2-22
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES........................................................ 2-22
PROTECTION AGAINST FALLING, FLYING OR INTRUDING OBJECTS....................................... 2-22
UNAUTHORIZED MODIFICATION .................................................................................................. 2-23
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS .................................................... 2-23
PRECAUTIONS RELATED TO CAB GLASS ................................................................................... 2-23
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING..................................................... 2-23
PRECAUTIONS FOR OPERATION ........................................................................................................ 2-24
PRECAUTIONS FOR JOBSITE....................................................................................................... 2-24
START ENGINE............................................................................................................................... 2-27
PRECAUTIONS FOR OPERATION ................................................................................................. 2-29
PRECAUTIONS FOR TRANSPORTATION...................................................................................... 2-37
TOWING AND BEING TOWED........................................................................................................ 2-38
LIFTING OPERATION BY USING BUCKET WITH HOOK............................................................... 2-38
PRECAUTIONS FOR MAINTENANCE................................................................................................... 2-40
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE ................................... 2-40
PRECAUTIONS FOR CHECK AND MAINTENANCE ...................................................................... 2-44
PRECAUTIONS FOR DEF...................................................................................................................... 2-50
GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING .................................................. 2-50
PRECAUTIONS FOR ADDING........................................................................................................ 2-50
PRECAUTIONS FOR STORING...................................................................................................... 2-50
PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE .................................................................... 2-50
OTHER PRECAUTIONS.................................................................................................................. 2-50
OPERATION.................................................................................................................................................... 3-1
GENERAL VIEW....................................................................................................................................... 3-2
MACHINE EQUIPMENT NAME ......................................................................................................... 3-2
CAB EQUIPMENT NAMES................................................................................................................ 3-4
CONTROLS AND GAUGES NAMES................................................................................................. 3-5
EXPLANATION OF COMPONENTS......................................................................................................... 3-9
EXPLANATION OF MACHINE MONITOR EQUIPMENT ................................................................... 3-9
SWITCHES...................................................................................................................................... 3-92
CONTROL LEVERS AND PEDALS............................................................................................... 3-102
OTHER EQUIPMENT .................................................................................................................... 3-105
FOREWORD TABLE OF CONTENTS
1-9

MACHINE OPERATIONS AND CONTROLS ........................................................................................ 3-149
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE ...................................................... 3-149
METHOD FOR STARTING ENGINE.............................................................................................. 3-182
METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE ................................. 3-186
METHOD FOR STOPPING ENGINE ............................................................................................. 3-197
METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MA-
CHINE........................................................................................................................................ 3-199
METHOD FOR STEERING MACHINE........................................................................................... 3-202
METHOD FOR SWINGING MACHINE .......................................................................................... 3-204
METHOD FOR OPERATING WORK EQUIPMENT ....................................................................... 3-205
HANDLE WORKING MODE .......................................................................................................... 3-207
PROHIBITED OPERATIONS ......................................................................................................... 3-210
PRECAUTIONS FOR OPERATION ............................................................................................... 3-214
PRECAUTIONS FOR WORKING ON SLOPE ............................................................................... 3-216
METHOD FOR ESCAPING FROM MUD ....................................................................................... 3-217
RECOMMENDED APPLICATIONS................................................................................................ 3-218
EFFECTIVE USE OF HYDRAULIC EXCAVATOR.......................................................................... 3-219
METHOD FOR REPLACING AND INVERTING BUCKET.............................................................. 3-220
METHOD FOR PARKING MACHINE............................................................................................. 3-223
METHOD FOR CHECKING AFTER FINISHING WORK................................................................ 3-224
LOCK............................................................................................................................................. 3-225
HANDLE AIR CONDITIONER............................................................................................................... 3-232
EXPLANATION OF AIR CONDITIONER EQUIPMENT.................................................................. 3-233
METHOD FOR OPERATING AIR CONDITIONER......................................................................... 3-237
HANDLING RADIO ............................................................................................................................... 3-246
EXPLANATION OF RADIO EQUIPMENT ...................................................................................... 3-246
METHOD FOR CONTROLLING RADIO ........................................................................................ 3-249
STOW ANTENNA .......................................................................................................................... 3-251
TRANSPORTATION.............................................................................................................................. 3-252
PRECAUTIONS FOR TRANSPORTING MACHINE ...................................................................... 3-252
SELECT TRANSPORTATION METHOD........................................................................................ 3-252
LOADING AND UNLOADING WITH TRAILER .............................................................................. 3-253
METHOD FOR LIFTING MACHINE............................................................................................... 3-266
COLD WEATHER OPERATION............................................................................................................ 3-268
COLD WEATHER OPERATION INFORMATION ........................................................................... 3-268
PRECAUTIONS AFTER DAILY WORK COMPLETION ................................................................. 3-270
AFTER COLD WEATHER SEASON .............................................................................................. 3-270
PRECAUTIONS FOR LONG-TERM STORAGE ................................................................................... 3-271
PREPARATION FOR LONG-TERM STORAGE............................................................................. 3-271
MAINTENANCE DURING LONG-TERM STORAGE...................................................................... 3-271
STARTING MACHINE AFTER LONG-TERM STORAGE............................................................... 3-272
TROUBLES AND ACTIONS ................................................................................................................. 3-273
ACTIONS WHEN RUNNING OUT OF FUEL ................................................................................. 3-273
PHENOMENA THAT ARE NOT FAILURES ................................................................................... 3-274
PRECAUTIONS FOR TOWING MACHINE.................................................................................... 3-275
PRECAUTIONS FOR SEVERE JOB CONDITION......................................................................... 3-276
PRECAUTIONS FOR DISCHARGED BATTERY ........................................................................... 3-277
OTHER TROUBLE......................................................................................................................... 3-282
MAINTENANCE............................................................................................................................................... 4-1
PRECAUTIONS FOR MAINTENANCE..................................................................................................... 4-2
CHECK SERVICE METER READING ............................................................................................... 4-2
KOMATSU GENUINE REPLACEMENT PARTS ................................................................................ 4-2
KOMATSU GENUINE LUBRICANTS................................................................................................. 4-2
ALWAYS USE CLEAN WASHER FLUID............................................................................................ 4-2
FRESH AND CLEAN LUBRICANTS .................................................................................................. 4-2
CHECK DRAINED OIL AND USED FILTER....................................................................................... 4-2
PRECAUTIONS FOR REFILLING OIL OR FUEL .............................................................................. 4-2
PRECAUTIONS FOR ADDING DEF ................................................................................................. 4-2
TABLE OF CONTENTS FOREWORD
1-10

PRECAUTIONS FOR WELDING ....................................................................................................... 4-2
DO NOT DROP THINGS INSIDE MACHINE ..................................................................................... 4-2
PRECAUTIONS FOR KDPF .............................................................................................................. 4-2
PRECAUTIONS FOR SCR ASSEMBLY ............................................................................................ 4-3
DUSTY JOBSITES............................................................................................................................. 4-3
AVOID MIXING OIL............................................................................................................................ 4-3
LOCK INSPECTION COVERS .......................................................................................................... 4-3
BLEED AIR FROM HYDRAULIC CIRCUIT ........................................................................................ 4-3
PRECAUTIONS WHEN INSTALLING HYDRAULIC HOSES ............................................................. 4-3
CHECKS AFTER INSPECTION AND MAINTENANCE...................................................................... 4-3
FUEL AND LUBRICANTS TO MATCH THE AMBIENT TEMPERATURE........................................... 4-3
CLOSE ENGINE HOOD SECURELY................................................................................................. 4-4
OUTLINE OF MAINTENANCE.................................................................................................................. 4-5
HANDLE OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC .................................................. 4-5
HANDLE ELECTRICAL COMPONENTS ......................................................................................... 4-10
STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS...............................................................4-11
MAINTENANCE SCHEDULE.................................................................................................................. 4-13
MAINTENANCE SCHEDULE TABLE............................................................................................... 4-13
MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER ............................................................. 4-15
MAINTENANCE PROCEDURE .............................................................................................................. 4-16
INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) ............................ 4-16
WHEN REQUIRED .......................................................................................................................... 4-17
CHECKS BEFORE STARTING........................................................................................................ 4-47
EVERY 50 HOURS MAINTENANCE ............................................................................................... 4-48
EVERY 250 HOURS MAINTENANCE ............................................................................................. 4-49
EVERY 500 HOURS MAINTENANCE ............................................................................................. 4-53
EVERY 1000 HOURS MAINTENANCE ........................................................................................... 4-67
EVERY 2000 HOURS MAINTENANCE ........................................................................................... 4-77
EVERY 4000 HOURS MAINTENANCE ........................................................................................... 4-89
EVERY 4500 HOURS MAINTENANCE ........................................................................................... 4-93
EVERY 5000 HOURS MAINTENANCE ........................................................................................... 4-94
EVERY 8000 HOURS MAINTENANCE ........................................................................................... 4-96
EVERY 9000 HOURS MAINTENANCE ........................................................................................... 4-96
SPECIFICATIONS ........................................................................................................................................... 5-1
SPECIFICATIONS .................................................................................................................................... 5-2
SPECIFICATIONS: PC360LC-11, PC390LC-11 ................................................................................. 5-2
ATTACHMENTS AND OPTIONS ..................................................................................................................... 6-1
PRECAUTIONS FOR USING ATTACHMENT AND OPTIONS.................................................................. 6-2
PRECAUTIONS WHEN SELECTING ................................................................................................ 6-2
READ THE OPERATION AND MAINTENANCE MANUAL THOROUGHLY....................................... 6-2
PRECAUTIONS WHEN REMOVING AND INSTALLING ................................................................... 6-2
PRECAUTIONS FOR USING ............................................................................................................ 6-2
HANDLE BUCKET WITH HOOK............................................................................................................... 6-4
PRECAUTIONS FOR OPERATION ................................................................................................... 6-4
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT .................................................... 6-5
EXPLANATION OF COMPONENTS ON MACHINE EQUIPPED WITH ATTACHMENT..................... 6-5
METHOD FOR CHANGE-OVER AND CONNECT HYDRAULIC CIRCUIT FOR MACHINE READY
FOR INSTALLATION OF ATTACHMENT.......................................................................................6-11
METHOD FOR REMOVING AND INSTALLING ATTACHMENT ...................................................... 6-13
METHOD FOR OPERATING ATTACHMENT................................................................................... 6-16
LONG-TERM STORAGE ................................................................................................................. 6-21
MAINTENANCE OF ADDITIONAL FILTER FOR BREAKER............................................................ 6-21
SPECIFICATIONS ........................................................................................................................... 6-25
METHOD FOR CHANGING CONTROL PATTERNS .............................................................................. 6-26
CONTROL PATTERNS OTHER THAN STANDARD CONTROL METHOD ..................................... 6-28
ATTACHMENTS AND OPTIONS ............................................................................................................ 6-29
INSTALL ATTACHMENT.................................................................................................................. 6-29
TRACK SHOES SELECTION .......................................................................................................... 6-31
FOREWORD TABLE OF CONTENTS
1-11

RECOMMENDED ATTACHMENT OPERATIONS................................................................................... 6-32
HYDRAULIC BREAKER .................................................................................................................. 6-32
STRAIGHT TRAVEL (OPTION) .............................................................................................................. 6-37
REPLACEMENT PARTS.................................................................................................................................. 7-1
PERIODIC REPLACEMENT OF DEFINED LIFE PARTS.......................................................................... 7-2
DEFINED LIFE PARTS LIST.............................................................................................................. 7-2
CONSUMABLE PARTS ............................................................................................................................ 7-3
CONSUMABLE PARTS ..................................................................................................................... 7-4
RECOMMENDED FUEL, COOLANT, AND LUBRICANT .......................................................................... 7-5
LUBRICATION CHART...................................................................................................................... 7-6
USE OF FUEL, COOLANT AND LUBRICANTS TO ACCORDING TO AMBIENT TEMPERATURE ........
....................................................................................................................................................... 7-7
RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS .............. 7-8
INDEX.............................................................................................................................................................. 8-1
TABLE OF CONTENTS FOREWORD
1-12

SAFETY
Please read and make sure that you fully understand the precautions descri-
bed in this manual and the safety labels on the machine. When operating or
servicing the machine, always follow these precautions strictly.
2-1

SAFETY
SAFETY LABELS ............................................................................................................................................ 2-4
LOCATION OF SAFETY LABELS............................................................................................................. 2-5
CONTENTS OF SAFETY LABELS ........................................................................................................... 2-7
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE ........................................... 2-16
PRECAUTIONS BEFORE STARTING OPERATION............................................................................... 2-16
ENSURE SAFE OPERATION .......................................................................................................... 2-16
UNDERSTAND THE MACHINE....................................................................................................... 2-16
PREPARATIONS FOR SAFE OPERATION ............................................................................................ 2-16
PRECAUTIONS FOR SAFETY-RELATED EQUIPMENT ................................................................. 2-16
INSPECT MACHINE........................................................................................................................ 2-16
WEAR WELL-FITTING CLOTHES AND PROTECTIVE EQUIPMENT............................................. 2-16
KEEP MACHINE CLEAN ................................................................................................................. 2-17
PRECAUTIONS FOR INSIDE OPERATOR'S COMPARTMENT ...................................................... 2-17
PROVIDE FIRE EXTINGUISHER AND FIRST AID KIT ................................................................... 2-17
IF ANY PROBLEM IS FOUND ......................................................................................................... 2-17
PRECAUTIONS TO PREVENT FIRE...................................................................................................... 2-18
ACTIONS IF FIRE OCCURS ........................................................................................................... 2-18
PREVENT FIRE............................................................................................................................... 2-18
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE.................................................................... 2-20
USE HANDRAILS AND STEPS WHEN GETTING ON OR OFF MACHINE..................................... 2-20
NO JUMPING ON OR OFF MACHINE............................................................................................. 2-20
NO PEOPLE ON ATTACHMENTS................................................................................................... 2-20
PRECAUTIONS WHEN STANDING UP FROM OPERATOR'S SEAT.............................................. 2-21
PRECAUTIONS WHEN LEAVING MACHINE.................................................................................. 2-21
EMERGENCY EXIT FROM OPERATOR'S CAB.............................................................................. 2-21
DO NOT GET CAUGHT IN WORK EQUIPMENT ................................................................................... 2-22
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES............................................................... 2-22
PROTECTION AGAINST FALLING, FLYING OR INTRUDING OBJECTS.............................................. 2-22
UNAUTHORIZED MODIFICATION ......................................................................................................... 2-23
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS ........................................................... 2-23
PRECAUTIONS RELATED TO CAB GLASS .......................................................................................... 2-23
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING............................................................ 2-23
PRECAUTIONS FOR OPERATION ............................................................................................................... 2-24
PRECAUTIONS FOR JOBSITE.............................................................................................................. 2-24
INVESTIGATE AND CONFIRM JOBSITE CONDITIONS................................................................. 2-24
PRECAUTIONS WHEN WORKING ON LOOSE GROUND............................................................. 2-24
DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES........................................................................ 2-25
ENSURE GOOD VISIBILITY............................................................................................................ 2-25
CHECK SIGNS AND SIGNALMAN'S SIGNALS............................................................................... 2-26
BEWARE OF ASBESTOS DUST..................................................................................................... 2-26
START ENGINE...................................................................................................................................... 2-27
USE WARNING TAGS ..................................................................................................................... 2-27
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE ........................................................ 2-27
PRECAUTIONS WHEN STARTING ENGINE .................................................................................. 2-28
IN COLD WEATHER........................................................................................................................ 2-28
START ENGINE WITH JUMPER CABLES ...................................................................................... 2-28
PRECAUTIONS FOR OPERATION ........................................................................................................ 2-29
CHECKS BEFORE OPERATION..................................................................................................... 2-29
PRECAUTIONS WHEN TRAVELING IN FORWARD OR REVERSE AND SWINGING ................... 2-29
PRECAUTIONS WHEN TRAVELING............................................................................................... 2-31
PRECAUTIONS WHEN TRAVELING ON SLOPES ......................................................................... 2-32
PRECAUTIONS WHEN OPERATING ON SLOPES ........................................................................ 2-33
PROHIBITED OPERATIONS ........................................................................................................... 2-33
PRECAUTIONS WHEN OPERATING ON SNOW OR FROZEN SURFACES.................................. 2-35
PRECAUTIONS WHEN PARKING MACHINE ................................................................................. 2-36
PRECAUTIONS FOR TRANSPORTATION............................................................................................. 2-37
SAFETY SAFETY
2-2

PRECAUTIONS WHEN LOADING AND UNLOADING.................................................................... 2-37
TOWING AND BEING TOWED............................................................................................................... 2-38
PRECAUTIONS FOR TOWING AND BEING TOWED..................................................................... 2-38
LIFTING OPERATION BY USING BUCKET WITH HOOK...................................................................... 2-38
PRECAUTIONS FOR LIFTING OPERATIONS ................................................................................ 2-38
PRECAUTIONS FOR MAINTENANCE.......................................................................................................... 2-40
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE .......................................... 2-40
DISPLAY WARNING TAG DURING INSPECTION AND MAINTENANCE ....................................... 2-40
KEEP WORK PLACE CLEAN AND TIDY ........................................................................................ 2-40
SELECT SUITABLE PLACE FOR INSPECTION AND MAINTENANCE .......................................... 2-40
ONLY AUTHORIZED PERSONNEL................................................................................................. 2-40
APPOINT LEADER WHEN WORKING WITH OTHERS .................................................................. 2-40
STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE ........................... 2-41
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING.......................................... 2-42
PRECAUTIONS WHEN INSTALLING, REMOVING, OR STORING ATTACHMENTS...................... 2-42
PRECAUTIONS FOR WORKING AT HIGH PLACES ...................................................................... 2-42
PRECAUTIONS WHEN WORKING ON MACHINE.......................................................................... 2-43
PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT .......................... 2-43
USE PROPER TOOLS .................................................................................................................... 2-43
PRECAUTIONS FOR CHECK AND MAINTENANCE ............................................................................. 2-44
TURN BATTERY DISCONNECT SWITCH TO OFF POSITION....................................................... 2-44
PRECAUTIONS FOR WELDING ..................................................................................................... 2-44
HANDLE BATTERY ......................................................................................................................... 2-44
PRECAUTIONS WHEN USING HAMMER ...................................................................................... 2-45
PRECAUTIONS FOR HIGH-TEMPERATURE COOLANT ............................................................... 2-45
PRECAUTIONS FOR HIGH-TEMPERATURE OIL........................................................................... 2-45
PRECAUTIONS FOR HIGH-TEMPERATURE PARTS..................................................................... 2-46
PRECAUTIONS FOR HIGH-PRESSURE OIL.................................................................................. 2-46
PRECAUTIONS FOR HIGH-PRESSURE FUEL .............................................................................. 2-46
HANDLE HIGH-PRESSURE HOSES AND PIPING ......................................................................... 2-46
PRECAUTIONS FOR HIGH VOLTAGE............................................................................................ 2-47
PRECAUTIONS FOR NOISE........................................................................................................... 2-47
PRECAUTIONS FOR HIGH-PRESSURE GREASE WHEN ADJUSTING TRACK TENSION .......... 2-47
DO NOT DISASSEMBLE RECOIL SPRING .................................................................................... 2-47
HANDLE ACCUMULATOR AND GAS SPRING............................................................................... 2-48
PRECAUTIONS FOR COMPRESSED AIR...................................................................................... 2-48
MAINTENANCE OF AIR CONDITIONER ........................................................................................ 2-48
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS .......................................................... 2-48
METHOD FOR SELECTING WINDOW WASHER FLUID................................................................ 2-48
PERIODIC REPLACEMENT OF DEFINED LIFE PARTS................................................................. 2-48
PRECAUTIONS FOR DEF............................................................................................................................. 2-50
GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING ......................................................... 2-50
PRECAUTIONS FOR ADDING............................................................................................................... 2-50
PRECAUTIONS FOR STORING............................................................................................................. 2-50
PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE ........................................................................... 2-50
OTHER PRECAUTIONS......................................................................................................................... 2-50
SAFETY SAFETY
2-3

SAFETY LABELS
kk
WARNING
Be sure that you fully understand the correct position, content and how to avoid a danger shown in the
safety labels.
Handle the warning signs and safety labels used on this machine as follows.
• Always keep the safety labels clean so that you can read it properly. When cleaning the safety labels, do
not use organic solvents or gasoline. These may cause the labels to peel off.
• If the safety labels are damaged, lost, or cannot be read properly, replace them with new ones. For details
of the part numbers for the safety labels, see this manual or the actual label, and place an order to your
Komatsu distributor.
• There are also other labels in addition to the warning signs and safety labels. Handle those labels in the
same way.
SAFETY LABELS SAFETY
2-4

LOCATION OF SAFETY LABELS
ZZD12245A
Options are shown with ★ marks in the figure.
SAFETY SAFETY LABELS
2-5

1. Caution for operation, inspection and maintenance
2. Caution before operating
3. Caution when leaving operator's seat
4. Caution for high-voltage cables
5. Caution for control pattern
6. Caution when opening or closing front window
7. Caution when stowing front window
8. Caution for high-temperature oil
9. Caution for high-temperature coolant
10. Caution for handling accumulator and gas spring
11. Caution for adjusting track tension
12. Caution for handling cable
13. Stop rotation during inspection and maintenance
14. Emergency escape
15. Caution against falling
16. Caution when swinging and traveling in reverse
17. Prohibition of entering within swing range
18. Caution for work equipment
19. Caution for handling battery
20. Prohibition of start by short-circuiting
21. Caution for blast site
22. Caution for high-pressure fuel
23. Caution for changing control patterns (machine
equipped with control pattern change-over valve)
24. Caution for control pattern
25. Caution for handling ROPS
26. Prohibition of use of ether
27. Caution for handling DEF
28. Caution for high-temperature resistance
29. Caution for Straight Travel System (STS)
SAFETY LABELS SAFETY
2-6