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D31EX, PX-22
D37EX, PX-22
SERIAL NUMBER
D31EX-22 - 60001 and up
D31PX-22 - 60001 and up
D37EX-22 - 60001 and up
D37PX-22 - 60001 and up
BULLDOZER
Unsafe use of this machine may cause serious injury or
death. Operators and maintenance personnel must read
this manual before operating or maintaining this
machine. This manual should be kept inside the cab for
reference and periodically reviewed by all personnel whowill come into contact with the machine.
Operation &Maintenance Manual
EEAM026805
WARNING
ORIGINAL INSTRUCTIONS
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FOREWORD
11
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BEFORE READING THIS MANUAL FOREWORD
1-2
BEFORE READING THIS MANUAL 1
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 fundamental
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 carry out 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. Improper operation and
maintenance of the machine can be hazardous and could result in 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 location shown on the right so that all relevant person-
nel can read it at any time.
Operation and Maintenance Manual Storing Place
Pocket in the back of the operator's seat (fitted with a lock)
REMARK
If the machine is equipped with an air suspension seat, keep
the Operation and Maintenance Manual in the steel pocket
behind the seat.
If this manual is lost or damaged, contact your distributor immediately to arrange for its replacement. For details
regarding the machine serial No. you will need to provide your Komatsu distributor, see TABLE TO ENTER
SERIAL NO. AND DISTRIBUTOR (1-9).
This manual uses the international units (SI) for units of measurement. For reference, units that have been used in
the past are given in ( ).
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FOREWORD BEFORE READING THIS MANUAL
1-3
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 addi-
tional changes that are not reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest
available information concerning your machine or with questions regarding information contained in this manual.
q The numbers in circles in the illustrations correspond to the numbers in ( ) in the text.
(For 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 spec-
ifications 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 Komatsu or your Komatsu distributor before
operating the machine.
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IMPORTANT SAFETY INFORMATION FOREWORD
1-4
IMPORTANT SAFETY INFORMATION 1
To enable you to use the machine safely, and to prevent injury to operators, service personnel or bystanders, the
precautions and warnings included in this manual and the safety signs attached to the machine must always be
followed.
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 message.
The following signal words are used to alert you to information that must be followed to avoid damage to the
machine.
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 exists which, if not
avoided, may result in minor or moderate injury.
NOTICEThis precaution is given where the machine may be damaged or the service life reduced if
the precaution is not followed.
REMARK This word is used for information that is useful to know.
DANGER
WARNING
CAUTION
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FOREWORD IMPORTANT SAFETY INFORMATION
1-5
NOISE (D37EX-22, D37PX-22) 1
Two labels indicating the machine noise level are affixed on the
machine.
q Sound pressure level at the operators station, measured
according to ISO6396 (Dynamic test method, simulatedworking cycle).
The maximum value of the standard deviation of the mea-
sured time-averaged A-weighted emission sound pressure
level at the operator's position is 2.5 dB, in accordance with
ISO 11201
q Sound power level emitted by the machine, measured
according to ISO 6395 (Dynamic test method, simulated
working cycle).
This is the guaranteed value as specified in European
directive 2000/14/EC. This value includes an uncertainty
of 3.0 dB
VIBRATION 1
When used for its intended purpose, levels of vibration for the earth-moving machine transmitted from the opera-
tors seat are lower than or equal to the tested vibrations for the relative machinery class in compliance with ISO
7096.
The actual acceleration value for the hands and arms is less than or equal to 2.5 m/s , the uncertainty for this
value is 1 m/s according EN 12096:1997.
The actual acceleration value for the body is less than or equal to 0.5 m/s , the uncertainty for this value is 0.2 m/
s according EN 12096:1997
These values were determined using a representative machine and measured during the typical operating condi-tion indicated below according to the measurement procedures that are defined in the standards ISO 2631/1 and
ISO 5349.
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IMPORTANT SAFETY INFORMATION FOREWORD
1-6
Operating condition:
(TRACTOR DOZER:) Dozing and spreading material through forward/reversing motion
Guide to Reduce Vibration Levels on Machine 1
The following guides can help an operator of this machine to reduce the whole body vibration levels:
1. Use the correct equipment and attachments.
2. Maintain the machine according to this manual
q Tire pressures (for wheeled machines), tension of crawler (for crawler machines)
q Brake and steering systems
q Controls, hydraulic system and linkages
3. Keep the terrain where the machine is working and traveling in good condition
qRemove any large rocks or obstacles
q Fill any ditches and holes
q Site manager should provide machine operators with machine and schedule time to maintain terrain con-
ditions
4. Use a seat that meets ISO 7096 and keep the seat maintained and adjusted
q Adjust the seat and suspension for the weight and size of the operator
q Wear seat belt
q Inspect and maintain the seat suspension and adjustment mechanisms
5. Steer, brake, accelerate, shift gears (for wheeled machines), and move the attachment levers and pedalsslowly so that the machine moves smoothly
6. Adjust the machine speed and travel path to minimize the vibration level
q When pushing with bucket or blade, avoid sudden loading; load gradually
q Drive around obstacles and rough terrain conditions
q Slow down when it is necessary to go over rough terrain
q Make the curve radius of traveling path as large as possible
q Travel at low speed when traveling around sharp curves
7. Minimize vibrations for long work cycle or long distance travelingq Reduce speed to prevent bounce
q Transport machines long distances between worksites
8. The following guidelines can be effective to minimize risks of low back pain
q Operate the machine only when you are in good health.
q Provide breaks to reduce long periods of sitting in the same posture
q Do not jump down from the cab or machine
q Do not repeatedly handle and lift loads.
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FOREWORD INTENDED USE
1-7
INTENDED USE 1
USE OF MACHINE 1
This Komatsu machine is designed to be used mainly for the following work:
q Dozing
q Smoothing
q Cutting into hard or frozen ground or ditching
q Felling trees, removing stumps
See the section WORK POSSIBLE USING BULLDOZER (3-99) for further details.
GENERAL VIEW AND DIRECTIONS OF MACHINE 1
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.
(A) Front (E) Operator's seat
(B) Rear (F) Sprocket
(C) Left
(D) Right
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LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR FOREWORD
1-8
LOCATION OF PLATES, TABLE TO ENTER SERIAL NO.AND DISTRIBUTOR 1
When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following
items.
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE 1
This is at the bottom left at the front of the operator's seat.
The design of the nameplate differs according to the territory.
EPA REGULATION, ENGINE SERIAL NO. PLATE 1
This is on the bracket on the rear left side of the engine.
EPA: Environmental Protection Agency, U.S.A.
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LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR FOREWORD
1-10
MACHINE SERIAL PLATE. 1
kg
kW
Model
Seriel Number
Manufacturing year
Weight
Engine power
Product Identification Number
Manufacturer
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FOREWORD LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR
1-11
MACHINE SERIAL NUMBER PLATE (according directive 2006/42/EC) 1
A
B C
D E
F
G
H
A Machine designation/type E Engine power
B Serial Number F Product Identification Number
C Year of construction G Manufacturer
D Operating mass H Authorised representative
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LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR FOREWORD
1-12
Declaration of conformity (Directive 2006/42/EC)
The manufacturer/Authorized representative
Declares that this machine
D37EX-22
D37PX-22
Fulfills all the relevant provisions of following EC Directives:
The manufacturer Authorized representative
KOMATSU LTD.2-3-6 Akasaka
Minato-ku, Tokyo 107-8414Japan
KOMATSU EUROPE INT.Mechelsesteenweg 586
B-1800 VilvoordeBelgium
Machinery Directive 2006/42/EC
Electro Magnetic Compatibility Directive 2004/108/EC
Outdoor noise Directive 2000/14/EC amended by 2005/88/EC
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CONTENTS
1-13
CONTENTS
FOREWORD
BEFORE READING THIS MANUAL .................................................................................................................... 1-2
IMPORTANT SAFETY INFORMATION ............................................................................................................... 1-4
NOISE (D37EX-22, D37PX-22) .................................................................................................................. 1-5
VIBRATION................................................................................................................................................. 1-5
Guide to Reduce Vibration Levels on Machine.................................................................................. 1-6
INTENDED USE ................................................................................................................................................... 1-7
USE OF MACHINE..................................................................................................................................... 1-7
GENERAL VIEW AND DIRECTIONS OF MACHINE ................................................................................. 1-7
LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR ............................................. 1-8
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE ....................................... 1-8
EPA REGULATION, ENGINE SERIAL NO. PLATE................................................................................... 1-8
SERVICE METER POSITION .................................................................................................................... 1-9
TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR.............................................................................. 1-9
MACHINE SERIAL PLATE. ...................................................................................................................... 1-10
MACHINE SERIAL NUMBER PLATE (according directive 2006/42/EC) ................................................. 1-11
Declaration of conformity (Directive 2006/42/EC)..................................................................................... 1-12
SAFETY
SAFETY ................................................................................................................................................................ 2-2
SAFETY LABELS................................................................................................................................................. 2-4
POSITIONS OF SAFETY PICTOGRAMS.................................................................................................. 2-4
SAFETY LABELS ....................................................................................................................................... 2-5
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE............................................. 2-10
PRECAUTIONS BEFORE STARTING OPERATION............................................................................... 2-10PREPARATIONS FOR SAFE OPERATION............................................................................................. 2-10
FIRE PREVENTION ................................................................................................................................. 2-12
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE .................................................................... 2-13
DO NOT GET CAUGHT IN WORK EQUIPMENT.................................................................................... 2-16
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES............................................................... 2-16
UNAUTHORIZED MODIFICATION.......................................................................................................... 2-16
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS........................................................... 2-16
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING ............................................................ 2-17
PRECAUTIONS FOR OPERATION ................................................................................................................... 2-18
PRECAUTIONS FOR JOBSITE ............................................................................................................... 2-18
STARTING ENGINE................................................................................................................................. 2-20
OPERATION............................................................................................................................................. 2-23
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CONTENTS
1-14
TRANSPORTATION................................................................................................................................. 2-27
TOWING ................................................................................................................................................... 2-28
PRECAUTIONS FOR MAINTENANCE .............................................................................................................. 2-29
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE .......................................... 2-29
PRECAUTIONS FOR INSPECTION AND MAINTENANCE..................................................................... 2-32
OPERATION
GENERAL VIEW .................................................................................................................................................. 3-2
GENERAL VIEW OF MACHINE................................................................................................................. 3-2
GENERAL VIEW OF CONTROLS AND GAUGES..................................................................................... 3-3
EXPLANATION OF COMPONENTS.................................................................................................................... 3-5
FRONT PANEL........................................................................................................................................... 3-5
CHECK MONITOR SYSTEM ............................................................................................................ 3-5
EMERGENCY CAUTION ITEMS ...................................................................................................... 3-7
CAUTION ITEMS............................................................................................................................... 3-9
METER GROUP.............................................................................................................................. 3-11
METHOD OF USING FAILURE CODE DISPLAY........................................................................... 3-18
LAMPS............................................................................................................................................. 3-19
SWITCHES...................................................................................................................................... 3-21
METHOD OF USING MAINTENANCE MODE................................................................................ 3-25
SWITCHES............................................................................................................................................... 3-31
CONTROL LEVERS AND PEDALS ......................................................................................................... 3-36
BATTERY DISCONNECT SWITCH (if installed)-42
FUSE ........................................................................................................................................................ 3-43
ELECTRIC POWER TAKE-OUT ADAPTER ............................................................................................ 3-45
DOOR - OPEN LOCK............................................................................................................................... 3-46
SASH GLASS INTERMEDIATE LOCK..................................................................................................... 3-46
COVER, CAP WITH LOCK....................................................................................................................... 3-47
METHOD OF OPENING OR CLOSING HYDRAULIC TANK CAP ................................................. 3-47
METHOD OF OPENING OR CLOSING THE FUEL TANK CAP..................................................... 3-48
METHOD OF OPENING OR CLOSING INSPECTION COVER ..................................................... 3-49
METHOD OF OPENING OR CLOSING COVER WITH LOCK ....................................................... 3-49
OPENING OR CLOSING REAR MASK.................................................................................................... 3-50
DOOR POCKET ....................................................................................................................................... 3-51
ASHTRAY................................................................................................................................................. 3-51
LUNCHBOX HOLDER BELT .................................................................................................................... 3-51
CUP HOLDER .......................................................................................................................................... 3-52
TOOL BOX................................................................................................................................................ 3-52
GREASE PUMP HOLDER........................................................................................................................ 3-52
CAR RADIO, HANDLING ......................................................................................................................... 3-53
EXPLANATION OF COMPONENTS............................................................................................... 3-53
METHOD OF OPERATION............................................................................................................. 3-58
PRECAUTIONS WHEN USING ...................................................................................................... 3-60
AIR CONDITIONER, HANDLING ............................................................................................................. 3-61
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CONTENTS
1-15
EXPLANATION OF PARTS............................................................................................................. 3-61
PREVENTION METHOD OF ENTRY OF DUST............................................................................. 3-62
PRECAUTION WHEN USING AIR CONDITIONER........................................................................ 3-62
INSPECTION DURING OFF-SEASON........................................................................................... 3-62
PROCEDURE FOR REPLACING RECEIVER................................................................................ 3-63
CLEANING AIR FILTER.................................................................................................................. 3-63
OPERATION....................................................................................................................................................... 3-64
CHECK BEFORE STARTING ENGINE, ADJUST.................................................................................... 3-64
WALK-AROUND CHECK ................................................................................................................ 3-64
CHECK BEFORE STARTING......................................................................................................... 3-66
ADJUSTMENT................................................................................................................................. 3-76
OPERATION AND CHECK BEFORE STARTING ENGINE............................................................ 3-80
STARTING ENGINE................................................................................................................................. 3-82
NORMAL STARTING...................................................................................................................... 3-82
STARTING IN COLD WEATHER.................................................................................................... 3-83
OPERATIONS AND CHECKS AFTER STARTING ENGINE................................................................... 3-87
BREAKING IN THE NEW MACHINE .............................................................................................. 3-87
WARMING UP OPERATIONS ........................................................................................................ 3-87
STARTING IN COLD WEATHER.................................................................................................... 3-88
STOPPING ENGINE................................................................................................................................. 3-90
MACHINE OPERATION........................................................................................................................... 3-91
MOVING MACHINE......................................................................................................................... 3-91
STOPPING MACHINE..................................................................................................................... 3-93
SHIFTING GEARS.................................................................................................................................... 3-94
SHIFTING BETWEEN FORWARD AND REVERSE................................................................................ 3-95
STEERING MACHINE.............................................................................................................................. 3-96
NORMAL TURNING........................................................................................................................ 3-96
TURNING WHILE DESCENDING A SLOPE................................................................................... 3-97
PRECAUTIONS FOR OPERATION......................................................................................................... 3-98
PAY ATTENTION TO GAUGES...................................................................................................... 3-98
PERMISSIBLE WATER DEPTH...................................................................................................... 3-98
PRECAUTIONS WHEN TRAVELING DOWNHILL ......................................................................... 3-98
PRECAUTIONS ON SLOPES......................................................................................................... 3-98
IT IS PROHIBITED TO KEEP THE DOOR OPEN DURING OPERATIONS................................... 3-98
IT IS PROHIBITED TO MODIFY THE CAB GLASS IN ANY WAY THAT
WILL OBSTRUCT THE VIEW ........................................................................................................ 3-99
PRECAUTIONS FOR BLIND SPOTS CAUSED BY CAB STAY..................................................... 3-99
WORK POSSIBLE USING BULLDOZER................................................................................................. 3-99
DOZING........................................................................................................................................... 3-99
SMOOTHING................................................................................................................................. 3-100
CUTTING INTO HARD OR FROZEN GROUND OR DITCHING.................................................. 3-100
FELLING TREES, REMOVING STUMPS ..................................................................................... 3-100
SIDE-CUTTING OPERATIONS..................................................................................................... 3-101
ADJUSTING POSTURE OF WORK EQUIPMENT................................................................................. 3-101
ADJUST ANGLE OF BLADE EDGE.............................................................................................. 3-101
PARKING MACHINE.............................................................................................................................. 3-103
CHECK AFTER FINISHING WORK ....................................................................................................... 3-104
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CONTENTS
1-16
BEFORE STOPPING ENGINE...................................................................................................... 3-104
AFTER STOPPING ENGINE......................................................................................................... 3-104
LOCKING................................................................................................................................................ 3-105
TIPS FOR LONGER UNDERCARRIAGE LIFE ...................................................................................... 3-106
OPERATION METHOD................................................................................................................. 3-106
INSPECTION AND ADJUSTMENT............................................................................................... 3-107
INSPECTION AND REPAIR.......................................................................................................... 3-107
TRANSPORTATION......................................................................................................................................... 3-109
TRANSPORTATION MEANS................................................................................................................. 3-109
REMOVING CAB.................................................................................................................................... 3-109
PRECAUTIONS WHEN REMOVING WORK EQUIPMENT................................................................... 3-109
LOADING, UNLOADING WORK ............................................................................................................ 3-110
METHOD OF LIFTING MACHINE.......................................................................................................... 3-113
COLD WEATHER OPERATION ...................................................................................................................... 3-115PRECAUTIONS FOR LOW TEMPERATURE ........................................................................................ 3-115
AFTER COMPLETION OF WORK ......................................................................................................... 3-116
AFTER COLD WEATHER ...................................................................................................................... 3-116
LONG-TERM STORAGE.................................................................................................................................. 3-117
BEFORE STORAGE............................................................................................................................... 3-117
DURING STORAGE ............................................................................................................................... 3-117
AFTER STORAGE.................................................................................................................................. 3-118
TROUBLESHOOTING...................................................................................................................................... 3-119
AFTER RUNNING OUT OF FUEL.......................................................................................................... 3-119
METHOD OF TOWING MACHINE......................................................................................................... 3-119
IF BATTERY IS DISCHARGED.............................................................................................................. 3-120
REMOVE AND INSTALL BATTERY ............................................................................................. 3-121
PRECAUTIONS FOR BATTERY CHARGING .............................................................................. 3-121
STARTING ENGINE WITH BOOSTER CABLE ............................................................................ 3-122
OTHER TROUBLE ................................................................................................................................. 3-125
ELECTRICAL SYSTEM................................................................................................................. 3-125
MONITOR PANEL......................................................................................................................... 3-126
CHASSIS....................................................................................................................................... 3-127ENGINE......................................................................................................................................... 3-128
MAINTENANCE
GUIDE TO MAINTENANCE ................................................................................................................................. 4-2
OUTLINE OF SERVICE........................................................................................................................................ 4-5
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...................................................... 4-5
OIL ..................................................................................................................................................... 4-5
FUEL.................................................................................................................................................. 4-6
COOLANT AND WATER FOR DILUTION......................................................................................... 4-6
GREASE............................................................................................................................................ 4-7
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CONTENTS
1-17
CARRYING OUT KOWA (Komatsu Oil Wear Analysis) .................................................................... 4-7
STORING OIL AND FUEL................................................................................................................. 4-8
FILTERS............................................................................................................................................ 4-8
RELATING TO ELECTRIC SYSTEM ......................................................................................................... 4-9
HANDLING HYDRAULIC SYSTEM............................................................................................................ 4-9
WEAR PARTS LIST ........................................................................................................................................... 4-10
WEAR PARTS LIST.................................................................................................................................. 4-11
RECOMMENDED FUEL, COOLANT, AND LUBRICANT ................................................................................. 4-13
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE ............ 4-14
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS
OTHER THAN KOMATSU GENUINE OIL............................................................................................... 4-15
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS..................................................................... 4-16
TORQUE LIST.......................................................................................................................................... 4-16
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS .......................................................................... 4-17
SAFETY CRITICAL PARTS...................................................................................................................... 4-18
MAINTENANCE SCHEDULE CHART ............................................................................................................... 4-20
MAINTENANCE SCHEDULE CHART...................................................................................................... 4-20
INITIAL 250 HOURS SERVICE (ONLY AFTER THE FIRST 250 HOURS) .................................... 4-20
INITIAL 500 HOURS SERVICE (ONLY AFTER THE FIRST 500 HOURS) .................................... 4-20
WHEN REQUIRED.......................................................................................................................... 4-20
CHECK BEFORE STARTING......................................................................................................... 4-20
EVERY 50 HOURS SERVICE......................................................................................................... 4-20
EVERY 250 HOURS SERVICE....................................................................................................... 4-20
EVERY 500 HOURS SERVICE....................................................................................................... 4-20
EVERY 1000 HOURS SERVICE..................................................................................................... 4-21
EVERY 2000 HOURS SERVICE..................................................................................................... 4-21
EVERY 4000 HOURS SERVICE..................................................................................................... 4-21
EVERY 8000 HOURS SERVICE..................................................................................................... 4-21
SERVICE PROCEDURE .................................................................................................................................... 4-22
WHEN REQUIRED................................................................................................................................... 4-22
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT......................................................... 4-22CHECK ADDITIONAL WATER SEPARATOR, CLEAN INSIDE OF CASE
(ONLY POOR FUEL ARRANGEMENT SPECIFICATION) ............................................................ 4-25
CLEAN INSIDE OF COOLING SYSTEM ........................................................................................ 4-26
CHECK TRACK SHOE TENSION, ADJUST................................................................................... 4-29
CHECK AND TIGHTEN TRACK SHOE BOLTS.............................................................................. 4-31
REVERSE AND REPLACE END BITS AND CUTTING EDGES .................................................... 4-32
CLEAN, CHECK RADIATOR FINS ................................................................................................. 4-33
CHECK, ADJUST AIR CONDITIONER........................................................................................... 4-37
GREASE DOOR HINGE.................................................................................................................. 4-38
CHECK DOOR LOCK STRIKER..................................................................................................... 4-38REPLACE DOOR DAMPER............................................................................................................ 4-38
CHECK DOOR LATCH.................................................................................................................... 4-39
CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID.............................................................. 4-39
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CONTENTS
1-18
REPLACE WIPER BLADE .............................................................................................................. 4-40
CHECK IDLER OIL LEVEL.............................................................................................................. 4-42
ADJUST IDLER CLEARANCE ........................................................................................................ 4-42
ADJUST PLAY IN CENTER BALL .................................................................................................. 4-43
PROCEDURE FOR BLEEDING AIR IN HYDRAULIC SYSTEM..................................................... 4-44
PROCEDURE FOR RELEASING INTERNAL PRESSURE OF HYDRAULIC SYSTEM................. 4-45
CHECK BEFORE STARTING .................................................................................................................. 4-46
EVERY 50 HOURS SERVICE.................................................................................................................. 4-47
LUBRICATING................................................................................................................................. 4-47
DRAIN WATER, SEDIMENT FROM FUEL TANK (ONLY STANDARD SPECIFICATION) ............ 4-48
EVERY 250 HOURS SERVICE................................................................................................................ 4-49
CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL .................................................................. 4-49
CHECK LEVEL OF BATTERY ELECTROLYTE ............................................................................. 4-50
CHECK ALTERNATOR DRIVE BELT TENSION, ADJUST-52
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST.................................... 8.-54
CHECK BRAKE PERFORMANCE.................................................................................................. 4-56
CLEAN AIR CONDITIONER AIR FILTER (FRESH/RECIRC FILTER)............................................ 4-57
EVERY 500 HOURS SERVICE................................................................................................................ 4-58
CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE.................... 4-58
REPLACE FUEL PRE-FILTER CARTRIDGE.................................................................................. 4-60
CHECK ELECTRIC WIRING AROUND STARTING MOTOR, ALTERNATOR............................... 4-62
EVERY 1000 HOURS SERVICE.............................................................................................................. 4-63
REPLACE FUEL MAIN FILTER CARTRIDGE (STANDARD SPECIFICATION)............................. 4-63
REPLACE FUEL MAIN FILTER CARTRIDGE
(POOR FUEL ARRANGEMENT SPECIFICATION)........................................................................ 4-65
REPLACE FUEL TANK BREATHER ELEMENT............................................................................. 4-67
REPLACE HYDRAULIC TANK BREATHER ELEMENT................................................................. 4-68
CHANGE OIL IN FINAL DRIVE CASE ............................................................................................ 4-68
CHECK CLAMP TIGHTENING PORTIONS FOR MACHINE INTAKE/EXHAUST PIPING]............ 4-69
CHECK FOR LOOSE ROPS MOUNT BOLTS................................................................................ 4-69
CHECK, CLEAN FAN ...................................................................................................................... 4-71
EVERY 2000 HOURS SERVICE.............................................................................................................. 4-73
CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC OIL
FILTER ELEMENT AND CLEAN HYDRAULIC TANK STRAINER ................................................ 4-73
CHECK ACCUMULATOR (FOR CONTROL CIRCUIT) .................................................................. 4-75
CHECK ALTERNATOR................................................................................................................... 4-77
CHECK ENGINE VALVE CLEARANCE, ADJUST.......................................................................... 4-77
EVERY 4000 HOURS SERVICE.............................................................................................................. 4-78
REPLACE ACCUMULATOR (FOR CONTROL CIRCUIT) .............................................................. 4-78
CHECK WATER PUMP................................................................................................................... 4-78
CHECK STARTING MOTOR........................................................................................................... 4-78
CHECKING FOR LOOSENESS OF HIGH-PRESSURE CLAMP, HARDENING OF RUBBER ...... 4-79
CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUBBER ....... 4-79
EVERY 8000 HOURS SERVICE.............................................................................................................. 4-80
REPLACE HIGH-PRESSURE PIPING CLAMPS............................................................................ 4-80
REPLACE FUEL SPLAY PREVENTION CAPS .............................................................................. 4-80
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CONTENTS
1-19
SPECIFICATIONS
SPECIFICATIONS ................................................................................................................................................ 5-2
ATTACHMENTS, OPTIONS
GENERAL PRECAUTIONS ................................................................................................................................. 6-2
AUTHORIZED OPTIONAL EQUIPMENT................................................................................................... 6-2
PRECAUTIONS RELATED TO SAFETY ................................................................................................... 6-2
PRECAUTIONS REGARDING THE INSTALLATION OF EQUIPMENT.................................................... 6-3
AIR SUSPENSION SEAT..................................................................................................................................... 6-4
EQUIPPING FIRE EXTINGUISHER AND FIRST-AID KIT................................................................................... 6-7
HANDLING MACHINES EQUIPPED WITH KOMTRAX ...................................................................................... 6-8
BASIC PRECAUTIONS.............................................................................................................................. 6-8
INDEX
COLOPHON
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CONTENTS
1-20
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SAFETY
12
WARNINGPlease be sure that you fully understand this manual and the
precautions discribed in this m anual and t he safety labels
on the machine. When operating or servicing the machine,
always follow these precaustions strictly.
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SAFETY SAFETY
2-2
SAFETY 2
SAFETY LABELS................................................................................................................................................ 2-42
POSITIONS OF SAFETY PICTOGRAMS ................................................................................................... 2-42
SAFETY LABELS......................................................................................................................................... 2-52
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE ............................................ 2-102
PRECAUTIONS BEFORE STARTING OPERATION................................................................................ 2-102
ENSURING SAFE OPERATION ........................................................................................................ 2-102
UNDERSTANDING THE MACHINE................................................................................................... 2-102
PREPARATIONS FOR SAFE OPERATION.............................................................................................. 2-102
PRECAUTIONS REGARDING SAFETY-RELATED EQUIPMENT.................................................... 2-102
INSPECTING MACHINE .................................................................................................................... 2-102
WEAR WELL-FITTING CLOTHES AND PROTECTIVE EQUIPMENT .............................................. 2-102
KEEP MACHINE CLEAN.................................................................................................................... 2-112
PRECAUTIONS INSIDE OPERATOR'S COMPARTMENT................................................................ 2-112
PROVIDE FIRE EXTINGUISHER AND FIRST AID KIT ..................................................................... 2-112 IF ANY PROBLEM IS FOUND............................................................................................................ 2-112
FIRE PREVENTION................................................................................................................................... 2-122
ACTION IF FIRE OCCURS ................................................................................................................ 2-122
PRECAUTIONS TO PREVENT FIRE................................................................................................. 2-122
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE...................................................................... 2-132
USE HANDRAILS AND STEPS WHEN GETTING ON OR OFF MACHINE...................................... 2-132
NO JUMPING ON OR OFF MACHINE............................................................................................... 2-152
LIFTING OF PERSONNEL PROHIBITED.......................................................................................... 2-152
NO PEOPLE ON ATTACHMENTS..................................................................................................... 2-152
PRECAUTIONS WHEN STANDING UP FROM OPERATOR'S SEAT .............................................. 2-152
PRECAUTIONS WHEN LEAVING MACHINE.................................................................................... 2-152
EMERGENCY EXIT FROM OPERATOR'S CAB................................................................................ 2-162
DO NOT GET CAUGHT IN WORK EQUIPMENT ..................................................................................... 2-162
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES................................................................ 2-162
UNAUTHORIZED MODIFICATION ........................................................................................................... 2-162
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS............................................................ 2-162
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING.............................................................. 2-172
PRECAUTIONS FOR OPERATION ................................................................................................................. 2-182
PRECAUTIONS FOR JOBSITE................................................................................................................. 2-182
INVESTIGATE AND CONFIRM JOBSITE CONDITIONS .................................................................. 2-182
WORKING ON LOOSE GROUND...................................................................................................... 2-182
DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES......................................................................... 2-192
ENSURE GOOD VISIBILITY .............................................................................................................. 2-192 CHECKING SIGNS AND SIGNALMAN'S SIGNALS .......................................................................... 2-202
BEWARE OF ASBESTOS DUST ....................................................................................................... 2-202
STARTING ENGINE .................................................................................................................................. 2-202
USE WARNING TAGS ....................................................................................................................... 2-202
CHECKS BEFORE STARTING ENGINE ........................................................................................... 2-212
PRECAUTIONS WHEN STARTING................................................................................................... 2-212
PRECAUTIONS IN COLD AREAS ..................................................................................................... 2-212
STARTING WITH BOOSTER CABLES.............................................................................................. 2-222
OPERATION.............................................................................................................................................. 2-232
CHECKS BEFORE OPERATION....................................................................................................... 2-232
PRECAUTIONS WHEN TRAVELING IN FORWARD OR REVERSE................................................ 2-232
PRECAUTIONS WHEN TRAVELING................................................................................................. 2-242
TRAVELING ON SLOPES.................................................................................................................. 2-252
PRECAUTIONS WHEN OPERATING................................................................................................ 2-252
TRAVELING ON SNOW-COVERED OR FROZEN SURFACES ....................................................... 2-252
PARKING MACHINE .......................................................................................................................... 2-262
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SAFETY SAFETY
2-3
TRANSPORTATION.................................................................................................................................. 2-272
LOADING AND UNLOADING............................................................................................................. 2-272
TOWING .................................................................................................................................................... 2-282
PRECAUTIONS WHEN TOWING ...................................................................................................... 2-282
PRECAUTIONS FOR MAINTENANCE ............................................................................................................ 2-292
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE ........................................... 2-292
DISPLAY WARNING TAG DURING INSPECTION AND MAINTENANCE........................................ 2-292 KEEP WORKPLACE CLEAN AND TIDY............................................................................................ 2-292
SELECT SUITABLE PLACE FOR INSPECTION AND MAINTENANCE ........................................... 2-292
STABILITY.......................................................................................................................................... 2-29
GUARDS............................................................................................................................................. 2-292
ONLY AUTHORIZED PERSONNE..................................................................................................... 2-292
ONLY AUTHORIZED PERSONNEL................................................................................................... 2-292
APPOINT LEADER WHEN WORKING WITH OTHERS.................................................................... 2-302
STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE............................ 2-302
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING ........................................... 2-302
INSTALLING, REMOVING, OR STORING ATTACHMENTS............................................................. 2-312
PRECAUTIONS WHEN WORKING AT HIGH PLACES..................................................................... 2-312
PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT........................... 2-312 PROPER TOOLS................................................................................................................................ 2-322
PRECAUTIONS FOR INSPECTION AND MAINTENANCE...................................................................... 2-322
PRECAUTIONS WHEN WELDING .................................................................................................... 2-322
HANDLING BATTERY........................................................................................................................ 2-322
PRECAUTIONS WHEN USING HAMMER......................................................................................... 2-342
PRECAUTIONS WITH HIGH-TEMPERATURE COOLANT............................................................... 2-342
PRECAUTIONS WITH HIGH-TEMPERATURE OIL........................................................................... 2-342
PRECAUTIONS WITH HIGH-PRESSURE OIL.................................................................................. 2-352
PRECAUTIONS WITH HIGH-PRESSURE FUEL............................................................................... 2-352
HANDLING HIGH-PRESSURE HOSES AND PIPING....................................................................... 2-352
NOISE................................................................................................................................................. 2-352
PRECAUTIONS WITH HIGH-PRESSURE GREASE WHEN ADJUSTING TRACK TENSION ......... 2-362
DO NOT DISASSEMBLE RECOIL SPRING ...................................................................................... 2-362
HANDLING ACCUMULATOR AND GAS SPRING............................................................................. 2-362
PRECAUTIONS WITH COMPRESSED AIR ...................................................................................... 2-372
MAINTENANCE OF AIR CONDITIONER........................................................................................... 2-372
HEMICAL HAZARD............................................................................................................................ 2-372
DISPOSING OF WASTE MATERIALS.............................................................................................. 2-372
METHOD OF SELECTING WINDOW WASHER FLUID.................................................................... 2-372
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS ........................................................... 2-382
DISMANTLING THE MACHINE END OF SERVICE LIVE ................................................................. 2-38
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SAFETY LABELS SAFETY
2-4
SAFETY LABELS 2
The following warning signs and safety labels are used on this machine.
q Be sure that you fully understand the correct position and content of labels.
q To ensure that the content of labels can be read properly, be sure that they are in the correct place and always
keep them clean. When cleaning them, do not use organic solvents or gasoline. These may cause the labels
to peel off.
q There are also other labels in addition to the warning signs and safety labels. Handle those labels in the same
way.
q If the labels are damaged, lost, or cannot be read properly, replace them with new ones. For details of the part
numbers for the labels, see this manual or the actual label, and place an order with Komatsu distributor.
POSITIONS OF SAFETY PICTOGRAMS 2
Z
Z
YX
X
Y
9JR07058B
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SAFETY SAFETY LABELS
2-5
SAFETY LABELS 2
(1) Caution for operation, inspection and maintenance
(09651-A0481)
q Warning!
q Read manual before operation, maintenance, disassembly,
assembly and transportation.
(2) Caution before moving in reverse (09802-B0640)
WARNINGTo prevents SEVERE INJURY or DEATH, do the fo llowing
before moving machine or its attachments:
Honk horn to alert people nearby.
Be sure no one is on or near the machine.
Use spotter if view is obstructed.
Follow above even if the machine is equipped with back-
up alarm and mirrors.
(3) Caution for leaving operator's seat (09654-B0481)
q Sign indicates a hazard of unexpected moving of stopped
machine.
q Lower working device to ground, move safety lever to lock
position and take engine key with you before leaving
machine.
09802-B0640
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SAFETY LABELS SAFETY
2-6
(4) Caution with high-temperature coolant, hydraulic oil
(09653-A0481)
q Never remove the cap when the engine is at operating
(high) temperature. Stream or high temperature oil blowing
up from the radiator or hydraulic tank, will cause personal
injury and or burns.
q Never remove the radiator or hydraulic tank oil filler when
cooling water or hydraulic oil is at high temperatures.
(5) Caution for accumulator (09659-A057B)
q There is the hazard of explotion causing injury.
q Do not disassemble the accumulator, make holes in it, cut
it, hit it roll it or bring it near flame.
(6) Caution for adjusting track tension (09657-A0881)
The safety label is attached to the rear side of the track adjust-
ment window cover.
q Sign indicates a hazard or flining plug from track adjuster
that could cause injury.
q Read the manual and adjusting track for safe and proper
handling.
(7) Caution for battery cable (09808-A0881)
q Sing indicates an electric hazard from handling the cable.
q Read the manual for save and proper handling.
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SAFETY SAFETY LABELS
2-7
(8) Stop rotation during inspection and maintenance
(09667-A0481)
q Sign indicates a hazard of rotating parts, such as belt.
qTurn off before inspection and maintenance.
(9) Caution for approach when machine moving
(09806-B1201)
q Sign indicates a hazard of being run over by moving equip-
ment.
q Keep a safe distance from equipment when it is moving.
(10) Prohibition of jump start (09842-A0481)
q Start the engine only after sitting down in the operators
seat.
q Do not attempt to start the engine by short-circuiting the
engine starting circuit. Such an act may cause a serious
bodily injury or fire.
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SAFETY LABELS SAFETY
2-8
(11) Caution for ROPS/FOPS (09620-A2000)
ROPS/FOBS CERTIFICATION
This protective structure complies with the standard provided
that it is properly equipped on the machine which mass is less
than the specified maximum mass.
q If some modification is applied to the ROPS or FOPS, it may effect the strength and may not be comply with
the standard. Consult Komatsu Distributor before altering.
q ROPS or FOPS may provide less protection if it has been structurally damaged or involved roll-over. Consult
Komatsu Distributor in that case.
q Always wear seat belt when moving.
(12) Caution of exchanging air cleaner (09637-A0640)
q Sign indicates a caution of exchanging air cleaner
q Read manual for exchanging air cleaner
NOTICE
Dont put oil in to this cleaner.
Use only genuine Komatsu elements
When service indicator turns to red (if there is no indi-cator, every 250 hours ) clean outer element.
One year after exchange or after us ing cleaned outer
element for six times, renew inner and outer element.
If service indicator turns to red soon or color of
exhaust gas is not clean and also in case of lacking
power after cleaning outer element, inner and outer
elements shall be replaced.
in th is case, however, do not clean inner element.
Element must be kept free of cracks and o il. If element
has a cracks, it must be replaced.
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SAFETY SAFETY LABELS
2-9
(13) Caution adding coolant
q Sign indicates a caution of exchanging air cleaner.
q Read manual for add coolant
(14)Drawbar (09823-00001)
Read manual for drawbar
(1): Indicate the maximum pulling load.
(2): Indicate the maximum vertical load.
q
(15) (Where fitted in cabin) Warning of an explosion hazard
caused by active radio transmitter at a blast zone
(09845-00480).
q Keep machine at a safe distance from blast zone and a
detonator.
NACAF
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GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE SAFETY
2-10
GENERAL PRECAUTIONS COMMON TO OPERATION ANDMAINTENANCE 2
Mistakes in operation, inspection, or maintenance may result in serious personal injury or death. Before carrying
out operation, inspection, or maintenance, always read this manual and the safety labels on the machine carefullyand obey the warnings.
PRECAUTIONS BEFORE STARTING OPERATION 2
ENSURING SAFE OPERATION
q Only trained and authorized personnel can operate and maintain the machine.
q Follow all safety, precautions, and instructions in this manual when operating or performing inspection or
maintenance on the machine.
q If you are not feeling well, or if you are under the influence of alcohol or medication, your ability to safely oper-ate or repair your machine may be severely impaired, putting yourself and everyone else on your job site in
danger.
q When working with another operator or with the person on the worksite traffic duty, discuss the content of the
operation beforehand and use the determined signals when carrying out the operation.
UNDERSTANDING THE MACHINE
Before operating the machine, read this manual thoroughly. If there are any places in this manual that you do not
understand, ask the person in charge of safety to give an explanation.
PREPARATIONS FOR SAFE OPERATION 2
PRECAUTIONS REGARDING SAFETY-RELATED EQUIPMENT
q Be sure that all guards, covers and mirrors are in their proper position. Have guards and covers repaired
immediately if they are damaged.
q Understand the method of use of safety features and use them properly.
q Never remove any safety features. Always keep them in good operating condition.
INSPECTING MACHINE
Check the machine before starting operations. If any abnormality is found, do not operate the machine until
repairs of the problem location have been completed.
WEAR WELL-FITTING CLOTHES AND PROTECTIVE EQUIPMENT
q Do not wear loose clothes or any accessories. If these
catch on the control levers or protruding parts, there is dan-
ger that it may cause the machine to move unexpectedly.
q Always wear a hard hat and safety shoes. If the nature of
the work requires it, wear safety glasses, mask, gloves, ear
plugs, and safety belt when operating or maintaining the
machine.
q If you have long hair and it hangs out from your hard hat,
there is a hazard that it may get caught up in the machine,so tie your hair up and be careful not to let it get caught.
q Check that all protective equipment functions properly
before using it.
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SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
2-11
KEEP MACHINE CLEAN
q If you get on or off the machine or carry out inspection and maintenance when the machine is dirty with mud or
oil, there is a hazard that you will slip and fall. Wipe off any mud or oil from the machine. Always keep the
machine clean.
qIf water gets into the electrical system, there is a hazardthat it will cause malfunctions or misoperation. If there is
any misoperation, there is danger that the machine may
move unexpectedly and cause serious personal injury or
death. When washing the machine with water or steam, do
not allow the water or steam to come into direct contact
with electrical components.
PRECAUTIONS INSIDE OPERATOR'S COMPARTMENT
q When entering the operator's compartment, always remove all mud and oil from the soles of your shoes.
If you operate the pedal with mud or oil affixed to your shoes, your foot may slip and this may cause a serious
accident.
q Do not leave tools or a machine parts lying around inside the operator's compartment. If tools or parts get into
the control devices, it may obstruct operation and cause the machine to move unexpectedly, resulting in seri-
ous personal injury or death.
q Do not stick suction pads to the window glass. Suction pads act as a lens and may cause fire.
q Do not use a cell phone when driving or operating the machine. This may lead to mistakes in operation, which
could cause serious personal injury or death.
q Never bring any dangerous objects such as flammable or explosive items into the operator's compartment.
PROVIDE FIRE EXTINGUISHER AND FIRST AID KIT
Always follow the precautions below to prepare for action if any injury or fire should occur.
q Be sure that fire extinguishers have been provided and
read the labels to ensure that you know how to use them in
emergencies.
q Carry out periodic inspection and maintenance to ensure
that the fire extinguisher can always be used.
q Provide a first aid kit in the storage point. Carry out peri-odic checks and add to the contents if necessary.
IF ANY PROBLEM IS FOUND
If you find any problems in the machine during operation or maintenance (noise, vibration, smell, incorrect gauges,
smoke, oil leakage, etc., or any abnormal display on the warning devices or monitor), report to the person in
charge and have the necessary action taken. Do not operate the machine until the problem has been corrected.
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GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE SAFETY
2-12
FIRE PREVENTION 2
ACTION IF FIRE OCCURS
q Turn the start switch OFF to stop the engine.
q Use the handrails and steps to get off the machine.
q Do not jump off the machine. There is the danger of falling and suffering serious injury.
PRECAUTIONS TO PREVENT FIRE
q Fire caused by fuel, oil, antifreeze, or window washer
fluid
Do not bring any flame or fire close to flammable sub-
stances such as fuel, oil, antifreeze, or window washer
fluid. There is danger that they may catch fire. To prevent
fire, always observe the following:
q Do not smoke or use any flame near fuel or other flam-
mable substances.
q Stop the engine before adding fuel.
q Do not leave the machine when adding fuel or oil.
q Tighten all fuel and oil caps securely.
q Be careful not to spill fuel on overheated surfaces or on
parts of the electrical system.
q After adding fuel or oil, wipe up any spilled fuel or oil.
q Put greasy rags and other flammable materials into asafe container to maintain safety at the workplace.
q When washing parts with oil, use a non-flammable oil.
Do not use diesel oil or gasoline. There is danger that
they may catch fire.
q Do not weld or use a cutting torch to cut any pipes or
tubes that contain flammable liquids.
q Determine well-ventilated areas for storing oil and fuel.
Keep the oil and fuel in the determined place and do
not allow unauthorized persons to enter.
q When carrying out grinding or welding work on the
machine, move any flammable materials to a safe
place before starting.
q Fire caused by accumulation o f flammable material.
Remove any dry leaves, chips, pieces of paper, coal dust, or any other flammable materials accumulated or
affixed around the engine, exhaust manifold, muffler, or battery, or inside the undercovers.
q Fire coming from electric wiring
Short circuits in the electrical system can cause fire. To prevent fire, always observe the following.
q Keep all electric wiring connections clean and securely tightened.
q Check the wiring every day for looseness or damage. Tighten any loose connectors or wiring clamps.
Repair or replace any damaged wiring.
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SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
2-13
q Fire coming from pip ing
Check that all the hose and tube clamps, guards, and cushions are securely fixed in position.
If they are loose, they may vibrate during operation and rub against other parts. There is danger that this may
lead to damage to the hoses and cause high-pressure oil to spurt out, leading to fire, serious personal injury or
death.
q Explosion caused by lighting equipment
q When checking fuel, oil, battery electrolyte, or coolant, always use lighting with anti-explosion specifica-
tions.
q When taking the electrical power for the lighting from the machine itself, follow the instructions in this man-
ual.
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE 2
USE HANDRAILS AND STEPS WHEN GETTING ON OR OFF MACHINE
To prevent personal injury caused by slipping or falling off the machine, always do as follows.
WHEN GETTING ON OR OFF FROM OPERATOR'S SEAT (D31EX, D31PX, D37EX, D37PX)
q Get on or off the operator's seat from the front of the
machine and use the handrails and steps marked by the
arrow in the diagram on the right.
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GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE SAFETY
2-14
WHEN ADDING FUEL, COOLANT, HYDRAULIC OIL (D31EX, D37EX)
q Use the handrails and steps marked by arrows in the dia-
gram on the right when adding fuel, coolant, or hydraulic
oil, and get on or off from the side of the machine.
WHEN ADDING FUEL, COOLANT, HYDRAULIC OIL (D31PX, D37PX)
q Use the handrails and steps marked by arrows in the dia-
gram on the right when adding fuel, coolant, or hydraulic
oil, and get on or off from the front of the machine.
q Always face the machine and maintain at least three-point
contact (both feet and one hand, or both hands and one
foot) with the handrail and steps to ensure that you support
yourself.
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SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
2-15
q Before getting on or off the machine, check the handrails and steps, and if there is any oil, grease, or mud on
them, wipe it off immediately. In addition, repair any damage and tighten any loose bolts.
q Do not grip the control levers and work equipment lock lever when getting on or off the machine.
q Never climb on the engine hood or covers where there are no non-slip pads.
q Do not get on or off the machine while holding tools in your hand.
NO JUMPING ON OR OFF MACHINE
q Never jump on or off the machine. Never get on or off a moving machine.
q If the machine starts to move when there is no operator on the machine, do not jump on to the machine and try
to stop it.
L IFTING OF PERSONNEL PROHIBITED
Under no circumstances should this machine be used for the lifting of personnel.
NO PEOPLE ON ATTACHMENTS
Never let anyone ride on the work equipment or other attachments. There is a hazard of falling and suffering seri-
ous personal injury or death.
PRECAUTIONS WHEN STANDING UP FROM OPERATOR'S SEAT
When standing up from the operator's seat to adjust the opera-
tor's seat, always lower the work equipment completely to the
ground, set work equipment lock lever (1) and parking brake
lever (2) to the LOCK position (L), and stop the engine.
If the control lever is touched by accident, there is danger that
the machine may suddenly move and cause serious personalinjury.
PRECAUTIONS WHEN LEAVING MACHINE
If the proper procedures are not taken when parking the
machine, the machine may suddenly move off by itself, and this
may lead to serious personal injury or death. Always do the fol-
lowing.
q When leaving the machine, always lower the work equip-
ment completely to the ground, set work equipment lock
lever (1) and parking brake lever (2) to the LOCK position
(L), and stop the engine.
Always lock all parts, take the key with you and leave it in
the specified place.
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GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE SAFETY
2-16
EMERGENCY EXIT FROM OPERATOR'S CAB
Machines equipped with a cab have doors on the left and right sides. If the door on the one side does not open,
escape from the door on the other side.
DO NOT GET CAUGHT IN WORK EQUIPMENT 2
The clearance in the area around the work equipment changes according to the movement of the link. If you get
caught, you may suffer serious personal injury or death. Do not allow anyone to come close to any rotating or
extending/retracting portion.
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES 2
The operator's compartment is equipped with a structure
(ROPS, FOPS) to protect the operator by absorbing the impact
energy. If the machine weight (mass) exceeds the certified
value (shown on the ROLL-OVER PROTECTIVE STRUC-TURE (ROPS) CERTIFICATION plate), ROPS will not be able
to fulfill its function. Do not increase machine weight beyond
the certified value by modifying the machine or by installing
attachments to the machine. Also, if the function of the protec-
tive equipment is impeded, the protective equipment will not be
able to protect the operator, and the operator may suffer injury
or death. Always observe the following.
q If the machine is equipped with a protective structure, do
not remove the protective structure and carry out opera-
tions without it.
q If the protective structure is welded, or holes are drilled in it, or it is modified in any other way, its strength maydrop. Consult your Komatsu distributor before carrying out any modifications.
q If the protective structure is damaged or deformed by falling objects or by rolling over, its strength will be
reduced and it will not be able to fulfill its function properly. In such cases, always contact your Komatsu dis-
tributor for advice on the method of repair.
q Even if the protective structure is installed, always fasten your seat belt properly when operating the machine.
If you do not fasten your seatbelt properly, it cannot display its effect.
UNAUTHORIZED MODIFICATION 2
q Komatsu will not be responsible for any injuries, accidents, product failures or other property damages result-ing from modifications made without authorization from Komatsu.
q Any modification made without authorization from Komatsu can create hazards. Before making a modification,
consult your Komatsu distributor.
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS 2
q Any injuries, accidents, product failures or other property damages resulting from the use of unauthorized
attachments or parts will not be the responsibility of Komatsu.
q When installing optional parts or attachments, there may be problems with safety or legal restrictions. There-
fore contact your Komatsu distributor for advice.
q When installing and using optional attachments, read the instruction manual for the attachment, and the gen-
eral information related to attachments in this manual.
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SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
2-17
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING 2
The engine exhaust gas contains substances that may damage
your health or even cause death. Start or operate the engine in
a place where there is good ventilation. If the engine or
machine must be operated inside a building or under ground,
where the ventilation is poor, take steps to ensure that the
engine exhaust gas is removed and that ample fresh air is
brought in.
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PRECAUTIONS FOR OPERATION SAFETY
2-18
PRECAUTIONS FOR OPERATION 2
PRECAUTIONS FOR JOBSITE 2
INVESTIGATE AND CONFIRM JOBSITE CONDITIONS
On the jobsite, there are various hidden dangers that may lead to personal injury or death. Before starting opera-
tions, always check the following to confirm that there is no danger on the jobsite.
q When carrying out operations near combustible materials such as thatched roofs, dry leaves or dry grass,
there is a hazard of fire, so be careful when operating.
q Check the terrain and condition of the ground at the worksite, and determine the safest method of operation.
Do not operate where there is a hazard of landslides or falling rocks.
q If water lines, gas lines, or high-voltage electrical lines may
be buried under the worksite, contact each utility and iden-
tify their locations. Be careful not to sever or damage anyof these lines.
q Take necessary measures to prevent any unauthorized
person from entering the operating area.
q In particular, if you need to operate on a road, protect
pedestrian and cars by designating a person for worksite
traffic duty or by installing fences around the worksite.
q When traveling or operating in water or on soft ground,
check the water depth, speed of the current, bedrock, and
shape of the ground beforehand and avoid any place that
will obstruct travel.
WORKING ON LOOSE GROUND
q Avoid traveling or operating your machine too close to the edge of cliffs, overhangs, and deep ditches. The
ground may be weak in such areas. If the ground should collapse under the weight or vibration of the machine,
there is a hazard that the machine may fall or tip over. Remember that the soil after heavy rain or blasting or
after earthquakes is weak in these areas.
q When working on embankments or near excavated ditches, there is a hazard that the weight and vibration of
the machine will cause the soil to collapse. Before starting operations, take steps to ensure that the ground is
safe and to prevent the machine from rolling over or falling.
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SAFETY PRECAUTIONS FOR OPERATION
2-19
DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES
Do not travel or operate the machine near electric cables. There is a hazard of electric shock, which may cause
serious personal injury or death. On jobsites where the machine may go close to electric cables, always do as fol-
lows.
qBefore starting work near electric cables, inform the local power company of the work to be performed, andask them to take the necessary action.
q Even going close to high-voltage cables can cause electric
shock, which may cause serious burns or even death.
Always maintain a safe distance (see the table on the right)
between the machine and the electric cable. Check with
the local power company about safe operating procedure
before starting operations.
q To prepare for any possible emergencies, wear rubber
shoes and gloves. Lay a rubber sheet on top of the seat,
and be careful not to touch the chassis with any exposed
part of your body.q Use a signalman to give warning if the machine
approaches too close to the electric cables.
q When carrying out operations near high voltage cables, do
not let anyone near the machine.
q If the machine should come too close or touch the electric
cable, to prevent electric shock, the operator should not
leave the operator's compartment until it has been con-
firmed that the electricity has been shut off.
Also, do not let anyone near the machine.
ENSURE GOOD VISIBILITY
This machine is equipped with mirrors to ensure good visibility, but even then there are places that cannot be seen
from the operator's seat, so be careful when operating.
Before travelling or operating the machine, the operator should sound the horn to warn people in the area.
When traveling or carrying out operations in places with poor visibility, it is impossible to check for obstacles in the
area around the machine and to check the condition of the jobsite. This leads to danger of serious personal injury
or death. When traveling or carrying out operations in places with poor visibility, always observe the following.
q Position a signalman if there are areas where the visibility is not good.
q Only one signalman should give signals.
q When working in dark places, turn on the working lamp and front lamps installed to the machine, and set up
additional lighting in the work area if necessary.
q Stop operations if the visibility is poor, such as in mist, snow, rain, or dust.
q When checking the