Komatsu H75051 Manual

Operation & Maintenance
Manual
VENAM31500
WA270 -8
WHEEL LOADER
SERIAL NUMBERS H75051 AND UP
H83001 AND UP
Incorrect operation and maintenance of this machine
may be hazardous and cause injuries. The operator and
maintenance personnel must read this manual before
commencing operation or maintenance. Keep this
manual within reach at all times and ensure that
operating personnel read it at regular intervals.
DANGER
© 2016 KOMATSU
All Rights Reserved
Printed in Europe 11-2016
ORIGINAL INSTRUCTIONS

.

FOREWORD
Komatsu recommends that any service parts used for maintenance, repair or
replacement of emission control systems be genuine new Komatsu or Ko-
matsu approved rebuilt parts or assemblies or others parts of equivalent
quality, and that the engine be serviced by an authorized Komatsu distribu-
tor. Failure to follow these recommendations could result in ineffective serv-
ice, damage to the product or safety risks (including personal injury or
death).
1-1

READ 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 in-
dicated location so that all relevant personnel can read it at any
time.
Keep it in the box for the Operation and Maintenance Manual
(1) 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.
EU DIRECTIVES
Machines supplied by us fulfil the Directive for Machinery 2006/42/EEC and all supplements.
If the machine is being used in another country, it is possible that certain safety regulations and specifications
may not be fulfilled for use in that country. For example, priority vehicle warning lamps may be used in some
countries, but are forbidden in others.
Please contact our dealer before using the machine if you have any questions regarding the fulfilment of stand-
ards and regulations in a specific country.
Notes on subsequent installation of electrical and electronic equipment and components.
READ THIS MANUAL FOREWORD
1-2

Electrical and electronic equipment and/or components which have been installed subsequently, emit electro-
magnetic radiation which can influence the function of the electronic components and sections of the machine.
This can have an influence on the safety of the machine and endanger persons. For this reason, please ensure
that the following safety instructions are observed.
If you are installing electrical or electronic equipment and/or components in the machine and connect them to
the vehicle electrical system, you must check at own responsibility that the installations do not cause any dis-
turbance to the vehicle’s electronic system or other components. Above all, you must ensure that any subse-
quently installed electrical and electronic components comply with the EMV Directive 2014/30/EU in its current
edition and bear the CE mark.
The following requirements also have to be met for subsequent installation of mobile communication systems
(e.g. radio, telephone):
• Only equipment approved by national legislation (e.g. BZT approval for Germany) may be used.
• The unit must be fixed in position.
• Portable or mobile units may only be used inside the vehicles if they are connected to a fixed outside anten-
na.
• The transmitter unit must be spatially separated from the vehicle’s electronic system.
• Make sure when installing the antenna that this is installed correctly with good earth connection between
antenna and vehicle mass.
Also observe Komatsu and manufacturer’s installation instructions for wiring, installation and maximum permit-
ted power consumption.
FOREWORD READ THIS MANUAL
1-3

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.
SAFETY INFORMATION FOREWORD
1-4

SAFETY LABELS
Safety labels are affixed to the machine to inform the operator or maintenance worker on the spot when carrying
out operation or maintenance of the machine that may involve hazard.
This machine uses "Safety labels using pictograms" to indicate safety procedures.
SAFETY LABELS USING PICTOGRAMS
Safety pictograms use a picture to express a level of hazardous
condition equivalent to the signal word. These safety picto-
grams use pictures in order to let the operator or maintenance
worker understand the level and type of hazardous condition at
all times. Safety pictograms show the type of hazardous condi-
tion at the top or left side and the method of avoiding the haz-
ardous condition at the bottom or right side. In addition, the
type of hazardous condition is displayed inside a triangle and
the method of avoiding the hazardous condition is shown inside
a circle.
Komatsu cannot predict every circumstance that might involve
a potential hazard in operation and maintenance. Therefore,
the safety messages in this manual and on the machine may
not include all possible safety precautions.
If any procedures or actions not specifically recommended or
allowed in this manual are used, it is your responsibility to take
the necessary steps to ensure safety
In no event should you engage in prohibited uses or actions described in this manual.
The explanations, values, and illustrations in this manual were prepared based on the latest information availa-
ble at that time. Continuing improvements in the design of this machine can lead to changes in detail which may
not be reflected in this manual
Consult Komatsu or your Komatsu distributor for the latest available information of your machine or for ques-
tions regarding information in this manual.
The numbers in the illustrations correspond to the numbers in ( ) in the text.
FOREWORD SAFETY LABELS
1-5

NOISE EMISSION LEVELS
A sign is attached to the machine that state the noise level produced.
• Sound pressure level at the operator’s station, measured
according to ISO 6396 (Dynamic test method, simulated
working cycle).
The maximum value of the standard deviation of the meas-
ured time-averaged A weighted emission sound pressure
level at the operator's position is 2.5 dB, in accordance
with ISO 11201.
• Sound power level emitted by the machine, measured ac-
cording to ISO 6395 (Dynamic test method, simulated
working cycle).
This is the guaranteed value as specified in European di-
rective 2000/14/EC.
This value includes an uncertainty of 2.5 dB.
104
NOISE EMISSION LEVELS FOREWORD
1-6

VIBRATION LEVEL
When used for its intended purpose, levels of vibration for the earth working machine transmitted from the oper-
ator’s seat are lower or equal to the test vibrations for the relative machinery class in compliance with ISO 7096.
The actual acceleration value of the upper limbs is less than 2.5 m/s2. The uncertainty for this value is 0.48 m/s2
according EN 12096:1997.
The actual acceleration value for the body is less than 0.5 m/s2. The uncertainty for this value is 0.24 m/s2 ac-
cording EN 12096:1997.
These values were determined using a representative machine and measured during the typical operating con-
dition indicated below according to the measurement procedures that are defined in the standards ISO 2631/1
and ISO 5349.
Operating condition: V-shape loading
Guide to reduce vibration levels on machine
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
• Tire pressures (for wheeled machines), tension of crawler (for crawler machines)
• Brake and steering systems
• Controls, hydraulic system and linkages
3. Keep the terrain where the machine is working and traveling in good condition
• Remove any large rocks or obstacles.
• Fill any ditches and holes
• Site manager should provide machine operators with machine and schedule time to maintain terrain
conditions
4. Use a seat that meets ISO 7096 and keep the seat maintained and adjusted
• Adjust the seat and suspension for the weight and size of the operator
• Wear seat belt
• Inspect and maintain the seat suspension and adjustment mechanisms
5. Steer, brake, accelerate, shift gears (for wheeled machines), and move the attachment levers and pedals
slowly so that the machine moves smoothly
6. Adjust the machine speed and travel path to minimize the vibration level
• When pushing with bucket or blade, avoid sudden loading; load gradually
• Drive around obstacles and rough terrain conditions
• Slow down when it is necessary rough terrain
• Make the curve radius of traveling path as large as possible
• Travel at low speed then traveling around sharp curves
7. Minimize vibrations for long work cycle or long distance traveling
• Reduce speed to prevent bounce
• Transport machines long distances between worksites
8. The following guidelines can be effective to minimize risks of low back pain.
• Operate the machine only when you are in good health
• Provide breaks to reduce long periods of sitting in the same posture
• Do not jump down from the cab or machine
• Do not repeatedly handle and lift loads
FOREWORD VIBRATION LEVEL
1-7

INTRODUCTION
MAIN USE OF MACHINE
This Komatsu machine is designed to be used mainly for the following work:
• Digging work
• Leveling work
• Dozing work
• Loading work
For details of the work procedure, see “RECOMMENDED APPLICATIONS”.
DIRECTIONS OF MACHINE
(A) Front
(B) Rear
(C) Left
(D) Right
(E) Bucket
(F) Operator's seat
In this manual, the directions of the machine (front, rear, left, right) are determined according to the view from
the operator's seat in the direction of travel (front) of the machine.
VISIBILITY FROM OPERATOR'S SEAT
This machine complies with the visibility standard (ISO5006).
This machine maintains a proximity visibility of a height of 1.5 m at a point 1 m away from the outside surface of
the machine, and a visibility for a radius of 12 m.
Protective structures
This machine is equipped with a structure to protect the operator (ROPS) conforming to ISO3471.
INTRODUCTION FOREWORD
1-8

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 EU Stage IV emission regulation in the European Union.
• 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 reagent 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, commonly referred to as AdBlue® in the European Union, that quality standards are main-
tained in accordance with DIN70070 and ISO 22241-1, to be used.
AdBlue® is a registered trade-mark of VDA (Verband der Automobilindustrie e.V.: Automobile Association of
Germany).
FOREWORD ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION
1-9

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
This is located at the center of the front frame on the right side of the machine.
The design of the nameplate differs according to the district.
LOCATION OF ENGINE NUMBER PLATE
This is located at the right top of the engine rear part on the right side of the machine.
PRODUCT INFORMATION FOREWORD
1-10

ROPS/FOPS SERIAL PLATE LOCATION
AXLE SERIAL PLATE LOCATION
This plate is located on the right of front axle and on the left of
rear axle.
TRANSMISSION SERIAL PLATE LOCATION
This plate is located in travel direction front, above the trans-
mission output.
g0047137
Komatsu Ltd.,Tokyo,Japan
SERIAL NO.
PART NO.
MODEL
PRODUCED BY
KOMATSU GERMANY GmbH, HANNOVER
FEDERAL REPUBLIC OF GERMANY FOR
g0047138
Komatsu Ltd.,Tokyo,Japan
SERIAL NO.
PART NO.
MODEL
PRODUCED BY
KOMATSU GERMANY GmbH, HANNOVER
FEDERAL REPUBLIC OF GERMANY FOR
FOREWORD PRODUCT INFORMATION
1-11

SEAT PLATE LOCATION
This plate is located in front of seat, covered by the bellows.
FLUORINATED GREENHOUSE GASES
Product contains fluorinated greenhouse gases.
SERVICE METER LOCATION
It is at the center bottom of the machine monitor.
HFC-134a
GWP 1430 CO2 eq.
kg
t
09971-10101
Product contains
fluorinated
greenhouse gases
1.0
1.43
g0027100
PRODUCT INFORMATION FOREWORD
1-12

YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR
Machine serial No.
Engine serial No.
Product identification
number (PIN)
Manufacturer name
Address Komatsu Germany GmbH Hanomag Strasse 9
30449 Hannover
Germany
Distributor name
Address
Phone/Fax
Service personnel
FOREWORD PRODUCT INFORMATION
1-13

DECLARATION OF CONFORMITY
The manufacturer:
Komatsu Germany GmbH
Hanomag Straße 9
30449 Hannover
Germany
Declares that this machine:
WA270-8*
Fulfils all the relevant provisions of following EC Directives:
Machine Directive 2006/42/EC
Electro Magnetic Compatibility Directive 2004/108/EC until 19 April 2016
2014/30/EU after 20 April 2016
Outdoor Noise Directive 2000/14/EC amended by 2005/88/EC
Radio Equipment and Telecommunications Terminal and
Equipment Directive 1999/5/EC until 12 June 2016
Radio Equipment Directive 2014/53/EU after 13 June 2016
*: explanation of machine category
Machine category Stand for:
WA Wheel loader
DECLARATION OF CONFORMITY FOREWORD
1-14

RETROFITTING BY THIRD-PARTY SUPPLIERS
In the case of wheel loaders with equipment and tools, which have not been part of a complete delivery ex
works, the responsibility for compliance with applicable laws and directives, in particular the European Machi-
nery Directive, lies with the customer who commissions retrofitting of the machine.
In the event of tools (e.g. loading shovels) being retrofitted by a third-party supplier, the technical specifications
of the manufacturer must be taken into account. For this purpose, or for further information, please be sure to
consult Komatsu or your local Komatsu dealer.
FOREWORD RETROFITTING BY THIRD-PARTY SUPPLIERS
1-15

EXPLANATION OF ACRONYMS
Acronyms Stand for:
KDPF Komatsu Diesel Particulate Filter
KVGT Komatsu Variable Geometry Turbo
KCCV Komatsu Closed Crankcase Ventilation
SCR Selective Catalytic Reduction
DEF Diesel Exhaust Fluid
ECSS Electrically Controlled Suspension System
EXPLANATION OF ACRONYMS FOREWORD
1-16

TABLE OF CONTENTS
FOREWORD.................................................................................................................................................... 1-1
READ THIS MANUAL............................................................................................................................... 1-2
EU DIRECTIVES ............................................................................................................................... 1-2
SAFETY INFORMATION .......................................................................................................................... 1-4
SAFETY LABELS ..................................................................................................................................... 1-5
NOISE EMISSION LEVELS...................................................................................................................... 1-6
VIBRATION LEVEL................................................................................................................................... 1-7
INTRODUCTION ...................................................................................................................................... 1-8
MAIN USE OF MACHINE .................................................................................................................. 1-8
DIRECTIONS OF MACHINE.............................................................................................................. 1-8
VISIBILITY FROM OPERATOR'S SEAT ............................................................................................ 1-8
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION..................................................... 1-9
PRODUCT INFORMATION..................................................................................................................... 1-10
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE ...... 1-10
LOCATION OF ENGINE NUMBER PLATE ...................................................................................... 1-10
ROPS/FOPS SERIAL PLATE LOCATION.........................................................................................1-11
AXLE SERIAL PLATE LOCATION ....................................................................................................1-11
TRANSMISSION SERIAL PLATE LOCATION ..................................................................................1-11
SEAT PLATE LOCATION................................................................................................................. 1-12
FLUORINATED GREENHOUSE GASES......................................................................................... 1-12
SERVICE METER LOCATION ......................................................................................................... 1-12
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR............................................................ 1-13
DECLARATION OF CONFORMITY ........................................................................................................ 1-14
RETROFITTING BY THIRD-PARTY SUPPLIERS................................................................................... 1-15
EXPLANATION OF ACRONYMS............................................................................................................ 1-16
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 .................................... 2-15
PRECAUTIONS BEFORE STARTING OPERATION........................................................................ 2-15
PREPARATIONS FOR SAFE OPERATION ..................................................................................... 2-15
PRECAUTIONS TO PREVENT FIRE............................................................................................... 2-17
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE............................................................. 2-18
DO NOT GET CAUGHT................................................................................................................... 2-20
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES........................................................ 2-20
UNAUTHORIZED MODIFICATION .................................................................................................. 2-21
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS.................................................... 2-21
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING..................................................... 2-21
PRECAUTIONS FOR OPERATION ........................................................................................................ 2-22
PRECAUTIONS FOR JOBSITE....................................................................................................... 2-22
START ENGINE............................................................................................................................... 2-24
PRECAUTIONS FOR OPERATION ................................................................................................. 2-26
PRECAUTIONS FOR TRANSPORTATION...................................................................................... 2-31
TOWING AND BEING TOWED........................................................................................................ 2-32
PRECAUTIONS FOR MAINTENANCE................................................................................................... 2-33
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE ................................... 2-33
PRECAUTIONS FOR CHECK AND MAINTENANCE ...................................................................... 2-37
TIRES .............................................................................................................................................. 2-41
PRECAUTIONS FOR DEF...................................................................................................................... 2-43
GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING .................................................. 2-43
PRECAUTIONS FOR ADDING........................................................................................................ 2-43
PRECAUTIONS FOR STORING...................................................................................................... 2-43
PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE .................................................................... 2-43
OTHER PRECAUTIONS.................................................................................................................. 2-43
FOREWORD TABLE OF CONTENTS
1-17

OPERATION.................................................................................................................................................... 3-1
GENERAL VIEW....................................................................................................................................... 3-2
MACHINE EQUIPMENT NAME ......................................................................................................... 3-2
CONTROLS AND GAUGES NAMES................................................................................................. 3-3
OTHER EQUIPMENT NAME............................................................................................................. 3-7
EXPLANATION OF COMPONENTS....................................................................................................... 3-10
EXPLANATION OF MACHINE MONITOR EQUIPMENT ................................................................. 3-10
SWITCHES...................................................................................................................................... 3-92
CONTROL LEVERS AND PEDALS............................................................................................... 3-107
OTHER COMPONENTS.................................................................................................................3-110
MACHINE OPERATIONS AND CONTROLS ........................................................................................ 3-149
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE ...................................................... 3-149
METHOD FOR STARTING ENGINE.............................................................................................. 3-174
METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE ................................. 3-178
METHOD FOR STOPPING ENGINE ............................................................................................. 3-181
METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE, AND SHIFTING GEAR)
AND STOPPING MACHINE ....................................................................................................... 3-182
METHOD FOR STEERING MACHINE........................................................................................... 3-190
METHOD FOR OPERATING WORK EQUIPMENT ....................................................................... 3-191
PRECAUTIONS FOR OPERATION ............................................................................................... 3-193
RECOMMENDED APPLICATIONS................................................................................................ 3-194
METHOD FOR ADJUSTING WORK EQUIPMENT POSTURE...................................................... 3-199
REMOTE POSITIONER................................................................................................................. 3-199
METHOD FOR PARKING MACHINE............................................................................................. 3-204
METHOD FOR CHECKING AFTER FINISHING WORK................................................................ 3-206
LOCK............................................................................................................................................. 3-206
HANDLE TIRE ............................................................................................................................... 3-209
HANDLE AIR CONDITIONER................................................................................................................3-211
EXPLANATION OF AIR CONDITIONER EQUIPMENT.................................................................. 3-212
METHOD FOR OPERATING AIR CONDITIONER......................................................................... 3-217
TRANSPORTATION.............................................................................................................................. 3-221
TRANSPORTATION PROCEDURE ............................................................................................... 3-221
LOADING AND UNLOADING WITH TRAILER .............................................................................. 3-221
METHOD FOR LIFTING MACHINE............................................................................................... 3-225
COLD WEATHER OPERATION............................................................................................................ 3-227
COLD WEATHER OPERATION INFORMATION ........................................................................... 3-227
PRECAUTIONS AFTER DAILY WORK COMPLETION ................................................................. 3-228
PRECAUTIONS IN COLD WEATHER ........................................................................................... 3-228
AFTER COLD WEATHER SEASON .............................................................................................. 3-228
PRECAUTIONS FOR LONG-TERM STORAGE ................................................................................... 3-229
PREPARATION FOR LONG-TERM STORAGE............................................................................. 3-229
MAINTENANCE DURING LONG-TERM STORAGE...................................................................... 3-229
STARTING MACHINE AFTER LONG-TERM STORAGE............................................................... 3-229
TROUBLES AND ACTIONS ................................................................................................................. 3-231
ACTIONS WHEN RUNNING OUT OF FUEL ................................................................................. 3-231
PRECAUTIONS FOR TOWING MACHINE.................................................................................... 3-231
PRECAUTIONS FOR DISCHARGED BATTERY ........................................................................... 3-235
OTHER TROUBLE......................................................................................................................... 3-238
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
1-18