Download Print this page

Komatsu PC138US-11E0 Operation & Maintenance Manual

Hydraulic excavator

page of 568

/ 568
Contents
Table of Contents
Bookmarks

Table of Contents

Advertisement

Quick Links

Download this manual

Operation &

Maintenance Manual

PC138US-

HYDRAULIC EXCAVATOR

SERIAL NUMBERS

PC138US-11E0

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.

F60001

and up

WARNING

WENAM00550_1

11E0

ORIGINAL INSTRUCTIONS

Table of Contents

Advertisement

Chapters

Table of Contents

Need help?

Need help?

Do you have a question about the PC138US-11E0 and is the answer not in the manual?

Questions and answers

Andrew Mackenzie

June 18, 2025

how often does this need serviced

0

Summary of Contents for Komatsu PC138US-11E0

Page 1 WENAM00550_1 Operation & Maintenance Manual PC138US- 11E0 HYDRAULIC EXCAVATOR SERIAL NUMBERS PC138US-11E0 F60001 and up WARNING ORIGINAL INSTRUCTIONS 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.
Page 3 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).
Page 4: Table Of Contents
CONTENTS FOREWORD CONTENTS FOREWORD..............................1-1 READ THIS MANUAL ..........................1-6 KOMATSU MACHINE OPERATOR PRIVACY POLICY ................1-7 SAFETY INFORMATION ........................1-10 NOISE EMISSION LEVELS ........................1-11 VIBRATION LEVEL..........................1-12 INTRODUCTION ............................ 1-14 MACHINE INFORMATION........................1-17 LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN) AND MACHINE SERIAL NO. PLATE..
Page 5 FOREWORD CONTENTS STEER MACHINE ......................... 3-204 SWING MACHINE ......................... 3-206 OPERATE WORK EQUIPMENT ....................3-207 HANDLE WORKING MODE ......................3-209 PROHIBITED OPERATIONS ......................3-211 WORK PRECAUTIONS ......................... 3-217 PRECAUTIONS WHEN YOU WORK ON SLOPE................3-220 ESCAPE FROM SOFT GROUND....................3-222 RECOMMENDED APPLICATIONS....................3-223 LIFT OBJECTS WITH LIFTING DEVICE ..................
Page 6 EVERY 8000 HOURS MAINTENANCE ..................4-100 EVERY 9000 HOURS MAINTENANCE ..................4-101 END OF SERVICE LIFE ........................4-102 SPECIFICATIONS ............................5-1 SPECIFICATIONS: PC138US-11E0......................5-2 EXPLANATION OF LIFT CAPACITY CHART.................... 5-4 ATTACHMENTS AND OPTIONS ........................6-1 PRECAUTIONS TO USE ATTACHMENTS AND OPTIONS SAFELY............6-2 HANDLE BUCKET WITH HOOK.......................
Page 7 CONSUMABLE PARTS LIST ......................7-3 RECOMMENDED FUEL, COOLANT, AND LUBRICANT ................7-4 LUBRICATION CHART ........................7-6 USE FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE ....7-8 RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS ....7-9 INDEX................................8-1 WENAM00550_1...
Page 8: Read This Manual
Make sure that you know the work conditions in advance to prevent accidents caused by dangerous conditions. Komatsu cannot predict each circumstance that might involve a possible danger when the machine is used. The precautions and warning indications in the Operation and Maintenance Manual and on the machine cannot in- clude all possible safety precautions.
Page 9: Komatsu Machine Operator Privacy Policy
Belgium, with registered office at 1800 Vilvoorde, Belgium, Mechelsesteenweg 586, registered in Brussels un- der number RPR/CER(0)404.968.268 (“Komatsu Europe”, together with the other Komatsu subsidiaries in the EEA referred to as “we” or “us”). Komatsu Europe acts as Komatsu's representative in the EU with respect to MMS.
Page 10 FOREWORD • pictures, videos and sound recordings 4. Why is your personal data processed? When you use Komatsu machines equipped with MMS, your personal data are processed for the following rea- sons: (a) Safety and security (b) Warranty (c) Misuse and theft prevention...
Page 11 (30) days after having received the request. If you have any complaint regarding the processing of your personal data by Komatsu or Komatsu Europe via MMS, you may always contact us via the e-mail address mentioned in the first paragraph of this clause. If you remain unsatisfied with our response, you may file a complaint with the competent data protection authority.
Page 12: Safety Information
SAFETY INFORMATION FOREWORD SAFETY INFORMATION Make sure to obey the precaution and warning indications in the Operation and Maintenance Manual and on the machine to avoid personal injury in operation, inspection, or maintenance, and for the safety of the personnel around the machine.
Page 13: Noise Emission Levels
FOREWORD NOISE EMISSION LEVELS NOISE EMISSION LEVELS Two signs are 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 2.5dB, in accordance with ISO 11201.
Page 14: Vibration Level
VIBRATION LEVEL FOREWORD VIBRATION LEVEL When used for its intended purpose, levels of vibration for the earth-moving machine transmitted from the oper- ator’s seat are lower than or equal to the tested vibrations for the relative machinery class in compliance with ISO 7096.
Page 15 FOREWORD VIBRATION LEVEL • Do not repeatedly handle and lift loads 1-13 WENAM00550_1...
Page 16: Introduction
• Using this machine in demolition work gives an in- creased risk of dangerous injury or death. • All Komatsu machines that are specifically designed, and can be used for demolition work, will display the Komatsu demolition decal. • If the machine does not display this decal and it is necessary to carry out demolition work, contact your distributor for information on demolition machinery compliant with the applicable standards.
Page 17: Visibility From Operator's Seat
FOREWORD INTRODUCTION (E) Operator's seat (F) Sprocket In the Operation and Maintenance Manual, the directions of the machine (front, rear, right, left) are based on the direction when operator in operator's seat views the direction of forward travel while the sprocket is at the rear. VISIBILITY FROM OPERATOR'S SEAT The visibility of this machine required by visibility standards (ISO 5006) are shown in the figure.
Page 18 INTRODUCTION FOREWORD Specification of visibility map • Working equipment specification : 4600mm boom - 2500mm arm • Machine Posture: In accordance with ISO5006 • Evaluation height : 1.2m above the ground • Scale-interval of the circles is 1m. Protective structures This machine has a structure to protect the operator (ROPS) which conforms to ISO12117-2: 2008.
Page 19: Machine Information
FOREWORD MACHINE INFORMATION MACHINE INFORMATION When you consult your Komatsu distributor for repair or replacement of parts, tell them the items that follow. LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN) AND MACHINE SERIAL NO. PLATE The nameplate is located at the position on the figure.
Page 20: Fluorinated Greenhouse Gases
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR Machine serial No. Engine serial No. Product identification number (PIN) Manufactures name Komatsu Italia Manufacturing S.p.A. via Bergoncino, 28 36025 Noventa Vicentina (VI) - Italy Authorised represen- KOMATSU UK Ltd tative for GB Durham Road...
Page 21: Serial Plate
FOREWORD MACHINE INFORMATION SERIAL PLATE G0121847 SERIAL NUMBER MACHINE DESIGNATION/TYPE OPERATING MASS YEAR OF CONSTRUCTION PRODUCT IDENTIFICATION NUMBER ENGINE POWER MANUFACTURER Alternative serial plate MACHINE DESIGNATION/TYPE YEAR OF CONSTRUCTION S ERIAL No. OPERATING MASS E NGINE PO WER Product Identification Number M ANUFACTURER: AUTHOR REP: G0118878...
Page 22: Declaration Of Conformity
DECLARATION OF CONFORMITY FOREWORD DECLARATION OF CONFORMITY The Manufacturer: Authorised representative for GB: Komatsu Italia Manufacturing S.p.A. KOMATSU UK Ltd via Bergoncino, 28 Durham Road 36025 Noventa Vicentina (VI) - Italy Birtley Chester-le-Street County Durham DH3 2QX United Kingdom Declares that the machine:...
Page 23: Abbreviation List
KOWA is a preventive maintenance service that collects and ana- KOWA Komatsu Oil and Wear Analysis lyzes oil in the machine at the specified interval so that wear of the machine and other problems can be found at short time.
Page 24 WENAM00550_1...
Page 25: Safety
SAFETY Fully understand the safety precautions which are shown in the Operation and Maintenance Manual and on the machine. Obey the precautions when you operate the machine and when you do the inspection and maintenance. WENAM00550_1...
Page 26: Location Of Safety Labels
LOCATION OF SAFETY LABELS SAFETY LOCATION OF SAFETY LABELS G0126276 WENAM00550_1...
Page 27: Contents Of Safety Labels
SAFETY CONTENTS OF SAFETY LABELS CONTENTS OF SAFETY LABELS Caution for operation, inspection and maintenance, caution when leaving operator's seat, caution for elec- tric cables Safety labels that follow are integrated sticker. Make a request with 22B-00-21220 for replacement. (A) Caution for operation, inspection and maintenance Part number: 09651-A0841 •...
Page 28 CONTENTS OF SAFETY LABELS SAFETY (E) Caution when opening or closing front window Part number: 09839-A0481 Accidental contact with control levers may cause uninten- ded machine movement resulting in injury or death. Always lower the attachments to ground, set the lock lever to LOCK position and stop engine before: •...
Page 29 SAFETY CONTENTS OF SAFETY LABELS Caution when stowing front window Part number: 09803-A0481 • Sign indicates a hazard from falling window. • After raising window, be sure to lock it in place with lock pin. Caution for high-temperature oil Part number: 09653-B0481 •...
Page 30 CONTENTS OF SAFETY LABELS SAFETY Caution for handling battery Part number: 09664-60001 • Never smoke or use any naked flame near the batter- ies, no sparks. • Always wear safety glasses when working with batter- ies. • Keep children away from batteries. •...
Page 31 SAFETY CONTENTS OF SAFETY LABELS 10. Caution for not getting on engine hood Part number: 09805-D0481 • Sign indicates a hazard of falling. • Do not stand on the place here. 11. Caution for not getting on counterweight Part number: 09805-A0481 •...
Page 32 CONTENTS OF SAFETY LABELS SAFETY 13. Prohibition of entering into swing range Part number: 09133-A2321 • Sign indicates a crush hazard by rotation of upper structure of the machine. • Keep away from swinging area of the machine. 14. Caution for nearing machine Part number: 09134-A1681 •...
Page 33 (Lb) • If some modification is applied to the ROPS or FOPS, it may affect the strength and may not be comply with the standard. Consult Komatsu Distributor before alter- 09620-A3002 ing. Komatsu Ltd. 2-3-6 Akasaka, Minato-ku, Tokyo, Japan 09620 - T2001 •...
Page 34 CONTENTS OF SAFETY LABELS SAFETY 22. Caution for using seat belt Part number: 09848-A0640 • Always use seat belt when operating the machine to reduce risk of injury or death in case of a roll-over. • Always check for damage or wear of the seat belt, damage of the connecting brackets, and tightness of bolts.
Page 35 SAFETY CONTENTS OF SAFETY LABELS 26. Anchor point for tie-off Part number: 09850-00641 Anchor point for personal fall-arrest equipment 27. Prohibition of lifting operation Part number: 09951-00281 2-11 WENAM00550_1...
Page 36: Other Labels
OTHER LABELS SAFETY OTHER LABELS • Caution before operation, inspection and maintenance Part number: 09651-A0481 • Warning! • Read manual before operation, maintenance, disas- sembly, assembly and transportation. • Location of battery Part number: 22E-98-21141 • Radiator cap Part number: 22B-00-41440 •...
Page 37 SAFETY OTHER LABELS • AF-NAC engine coolant Part number: 09642-A0480 AF-NAC 09642-A0480 G0110222 • Washer tank Part number: 22B-00-11340 G0120088 • Lock front window Part number: 22B-00-21670 For details, see “OPEN AND CLOSE CAB FRONT WINDOW (3-104)”. 22B-00-21670 G0139584 • Correct position for wiper blade Part number: 22B-00-32710 For details, see “OPEN AND CLOSE CAB FRONT WINDOW...
Page 38 OTHER LABELS SAFETY • Pump secondary drive switch, swing parking brake cancel switch and lock lever lock cancel switch Part number: 22B-00-42420 For details, see “PUMP SECONDARY DRIVE SWITCH (3-94)”, “SWING PARKING BRAKE CANCEL SWITCH (3-94)” and “LOCK LEVER AUTOMATIC LOCK CANCEL SWITCH (3-94)”.
Page 39 SAFETY OTHER LABELS • Use ultra low-sulfur diesel fuel Part number: 09652-61251 For details, see “RECOMMENDED FUEL, COOLANT, AND LU- BRICANT (7-4)”. • Use only DEF. Do not add water or fuel into the DEF tank. Part number: 09632-70800 For details, see “RECOMMENDED FUEL, COOLANT, AND LU- BRICANT (7-4)”.
Page 40 OTHER LABELS SAFETY • Lubrication chart Part number: 22B-00-41170 For details, see “LUBRICATION CHART (7-6)”. G0139583 • Lift capacity chart Part number: 22B-00-41260 For details, see “”. 22B-00-41260 G0139580 • Overload capacity chart PC138US−11 Part number: 22B-00-41630 For details, see “”. 6.0m 4.5m 3.0m...
Page 41 SAFETY OTHER LABELS • Lifting and fastening instructions for transport Part number: 22U-00-31530 For details, see “TRANSPORTATION (3-269)”. 22U-00-31530 G0139587 • Lifting points Part number: 09960-00801 G0110197 • Fastening points Part number: 09960-00802 G0110198 • Oil level Part number: 203-00-31120 For details, see “CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL (3-155)”.
Page 42 OTHER LABELS SAFETY 2-piece boom specification For details, see “HANDLE 2-PIECE BOOM (6-6)”. • Lift capacity chart Part number: 22B-00-RA123 22B-00-RA123 G0139684 • Overload capacity chart PC138US−11 Part number: 22B-00-R1631 6.0m 4.5m 3.0m 4.5m 1251 1090 3.0m 1180 1535 2350 1.5m 1305 1875...
Page 43 SAFETY OTHER LABELS • Lift capacity chart Part number: 22B-00-RA123 22B-00-R1260 G0139686 • Overload capacity chart Part number: 22B-00-R1631 22B-00-R1640 G0139687 2-19 WENAM00550_1...
Page 44: General Precautions Common To Operation And Maintenance
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE Incorrect operation, inspection and maintenance can cause serious personal injury or death. Read the descrip- tion of the safety signs in this manual and on the machine before you do operation and maintenance, and obey the precautions.
Page 45: Actions If Fire Occurs
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- SAFETY NANCE • If water gets in the electrical system, electric devices can have a malfunction and it can cause a failure of machine. There is a danger that causes serious personal injury or death if the machine moves unexpectedly by a malfunc- tion.
Page 46: Precautions To Prevent Fire
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY Wear rubber gloves always when you handle unburned remaining. Chloroprene rubber (neoprene rubber) or polyvinyl chloride (when the temperature is sufficiently low) is rec- ommended for the material of the gloves. If you use the cotton gloves, wear the rubber gloves below them.
Page 47: Precautions When You Get On Or Off Machine
If the handrails and steps are damaged or deformed, they G0000874 need to be repaired immediately. Consult your Komatsu distributor. • Do not hold the control levers or lock levers when you get on or off the machine. When you get on or off the machine, be careful that your body or clothes do not touch the levers.
Page 48 GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY Precautions when you stand up from operator's seat Before you stand up from the operator's seat, such as when you open or close the front window or ceiling window, or when you remove or install the lower window, or when you adjust the position of the seat, always lower the work equipment to the ground, hold the red part on the top of the lock lever (1) to set it...
Page 49: Precautions For Machine And Jobsite
G0000875 Unauthorized modification • Komatsu will not be responsible for personal injuries, machine failures, physical loss or damage, or influ- ence on the environment because of modifications made without authorization from Komatsu. 2-25 WENAM00550_1...
Page 50 We take no responsibility for personal injury, failure, or property damage caused from the use of attach- ments or options not authorized by us. • Installation of an attachment or option can cause a safety and legal issue. Consult your Komatsu distributor in advance. •...
Page 51: Precautions For Operation
SAFETY PRECAUTIONS FOR OPERATION PRECAUTIONS FOR OPERATION PRECAUTIONS FOR JOBSITE Jobsite conditions - Investigate/Confirm In the jobsite, there are many dangers that could cause serious personal injury or death. Before you start the work, check the items that follow to make sure that there is no danger on the jobsite. •...
Page 52 PRECAUTIONS FOR OPERATION SAFETY Line voltage Safe distance 154000V 5m or more 187000V 6m or more 275000V 7m or more 500000V 11m or more Safe distance for Italian market Line voltage Safe distance <=1000V Min. 3m 1001 to 30000V Min. 3.5m 30001 to 132000 Min.
Page 53 SAFETY PRECAUTIONS FOR OPERATION Beware of asbestos dust There is a danger of lung cancer if you breathe air which con- tains asbestos dust. There is a danger that you breathe the as- bestos particles on the jobsites where demolition work is done or the industrial wastes are handled.
Page 54: Start Engine
PRECAUTIONS FOR OPERATION SAFETY START ENGINE Use warning tags If “DANGER! Do NOT operate!” warning tag is shown, the ma- chine is under inspection and maintenance. There is a danger that causes serious personal injury or death if you get caught in rotation part or movable part of the machine when you ignore the warning tag and operate the machine.
Page 55 • Adjust the cameras to have a good rear view and a good view of surrounding area from the operator's seat. For the adjustment, consult Komatsu distributor. • Adjust the armrest to a position for easier operation, and then fix it securely. If you operate the machine in an unsta- ble posture, mistake in operation can occur, and it can cause serious personal injury or death.
Page 56 PRECAUTIONS FOR OPERATION SAFETY • Be sure to connect the positive (+) terminal first when you connect the jumper cables. Disconnect the nega- tive (-) terminal (ground side) first when you disconnect them. • Do not let the clips touch other clips or the machine when you disconnect the jumper cables. •...
Page 57: Precautions For Operation
SAFETY PRECAUTIONS FOR OPERATION PRECAUTIONS FOR OPERATION Checks before operation If the check before starting is not done, the machine performance will not be fully used, and there is a danger that causes serious personal injury or death. Do the inspection in a large area where has no obstacle, and be very careful around the machine. Keep persons away from near the machine.
Page 58 PRECAUTIONS FOR OPERATION SAFETY • If persons are in the area around the machine while it trav- els or swings, there is danger that they will be hit or caught by the machine, and this can lead to serious personal in- jury or death.
Page 59 SAFETY PRECAUTIONS FOR OPERATION • When you operate the machine in such areas where height is limited as in tunnels or buildings or below bridges or below electric wires, operate it slowly and be very careful not to let the machine and work equip- ment touch anything.
Page 60 PRECAUTIONS FOR OPERATION SAFETY • Do not travel on the slope covered with the iron plates. Even a slight slope is slippery and it is very danger- ous. • Set the travel speed as low as possible on the grasses and fallen leaves. Even a small-angle slope is slip- pery and dangerous.
Page 61 SAFETY PRECAUTIONS FOR OPERATION • When you operate the machine near the cliff or road shoul- der, do the work with the tracks at a right angle to the cliffs and shoulders and the sprocket at the back for quick evac- uation in case of emergency.
Page 62 PRECAUTIONS FOR OPERATION SAFETY • It is dangerous that the machine goes into deep snow. The machine can fall over or become buried in the snow. Be careful not to go off the road or to get trapped in a drift of snow. •...
Page 63: Precautions For Transportation
• The disassembly of this machine can be necessary for the transportation by each related law and regula- tion. When you transport the machine, consult your Komatsu distributor. Precautions when you load and unload If you handle the machine incorrectly when you load or unload the machine, it is dangerous that the machine can turn over or fall.
Page 64: Precautions For Towing
PRECAUTIONS FOR OPERATION SAFETY PRECAUTIONS FOR TOWING Precautions for towing and being towed In the towing and being towed operation, a mistake in the selection of the wire rope or towing bar or towing pro- cedure can cause personal injury or death. •...
Page 65: Lifting Operation By Bucket With Hook
SAFETY PRECAUTIONS FOR OPERATION LIFTING OPERATION BY BUCKET WITH HOOK Precautions for lifting operations There is danger that a lifted load falls down or the machine falls over. It can cause serious personal injury or death. Obey the items that follow. •...
Page 66 PRECAUTIONS FOR OPERATION SAFETY • When swinging or operating the work equipment, check carefully that the surrounding area is clear from objects, structures or any persons working around the machine. • During the lifting operation, reduce the engine speed and carry out the operation in L mode.
Page 67 SAFETY PRECAUTIONS FOR OPERATION • The operator or person attaching the sling should inspect the bucket link lifting device and all the components in the load line (e.g. chains, shackles etc.) visually for damage or deformation before use to ensure that they are not dam- aged or worn.
Page 68: Precautions For Maintenance
PRECAUTIONS FOR MAINTENANCE SAFETY PRECAUTIONS FOR MAINTENANCE PRECAUTIONS BEFORE YOU START INSPECTION AND MAINTENANCE Show warning tag during inspection and maintenance During the inspection and maintenance, “DANGER! Do NOT operate!” warning tag must be shown. If “DANGER! Do NOT operate!” warning tag is shown, the ma- chine is under inspection and maintenance.
Page 69 END OF SERVICE LIFE • For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor. Stop engine before you inspect or do maintenance If you are caught or pinched between the work equipment during operation, or exposed to high-temperature or high-pressure liquids, it is dangerous and can cause serious personal injury or death.
Page 70 PRECAUTIONS FOR MAINTENANCE SAFETY • Rotating parts such as the fans or belts are dangerous that they can easily catch your body part or a thing. When you work, be careful not to let them come near the rotating parts. •...
Page 71 SAFETY PRECAUTIONS FOR MAINTENANCE Precautions when you work below machine or work equipment If the machine or work equipment falls down, it can lead to serious personal injury or death. Obey the items that follow. • Use the hoists or hydraulic jacks which are in good condition and sufficiently strong to handle the weight of the component.
Page 72: Precautions For Check And Maintenance
PRECAUTIONS FOR MAINTENANCE SAFETY PRECAUTIONS FOR CHECK AND MAINTENANCE Turn battery disconnect switch to OFF position In the cases that follow, after you turn the starting switch to the OFF position, check that the system operating lamp is not lit. Then turn the battery disconnect switch to the OFF position and remove the switch key. There is a danger that causes serious personal injury or death by electric shock if you do inspection and han- dling of the battery when you do not turn the battery disconnect switch to the OFF position.
Page 73 SAFETY PRECAUTIONS FOR MAINTENANCE Risk for spark Sparks are made and can cause fire. Obey the items that follow. • Do not allow metal object like a tool to contact between the terminals of the battery. Do not leave the tools. •...
Page 74 If you find looseness in the mounting parts of the hoses or the piping, or if oil or fuel leaks from the mounting parts, stop the work and retighten them to the specified torque. If you find damage or deformation in the hoses or piping, consult your Komatsu distributor. Replace the hose if you find one of the conditions that follow.
Page 75 Do not touch the inside of engine controller or the injector part of engine. If it is necessary to touch the inside of engine controller or the in- jector part of engine, consult your Komatsu distributor. G0113325 Precautions for noise Wear the ear covers or ear plugs if you do the work exposed in noise for a long time such as adjustment work of engine.
Page 76 • Outsource to a contractor the disposal of rubber, plastics, and parts that contains them (hoses, cables, har- nesses, etc.) in accordance to applicable laws and regulations. If you have a question about waste disposal, consult Komatsu distributor. 2-52 WENAM00550_1...
Page 77 SAFETY PRECAUTIONS FOR MAINTENANCE Window washer fluid - Select Use the ethyl alcohol washer fluid. Do not use the methyl alcohol washer fluid because it can cause injury to your eyes. PERIODIC INSPECTION OF DEFINED LIFE PARTS • To use the machine safely for a long period, be sure to periodically inspect the defined life parts that have an especially close relation to safety, such as hoses and the seat belt.
Page 78 WENAM00550_1...
Page 79: Operation
OPERATION Before you read the OPERATION, read and understand the SAFETY. WENAM00550_1...
Page 80: General View
GENERAL VIEW OPERATION GENERAL VIEW MACHINE EQUIPMENT NAME G0126295 (1) Bucket (10) Blade cylinder (blade specification) (2) Bucket cylinder (11) Blade (blade specification) (3) Arm (12) Idler (4) Arm cylinder (13) Track frame (5) Boom (14) Track (6) Boom cylinder (15) Sprocket (7) Working lamp (16) KomVision camera...
Page 81 (18) Fusible link (25) DEF pump (19) System operating lamp (26) DEF tank (20) Battery disconnect switch (27) SCR (21) Battery (28) DEF injector (22) Toolbox (29) KDPF (23) Grease pump holder (24) Komatsu Closed Crankcase Ventilation (hereafter KCCV) ventilator WENAM00550_1...
Page 82: Cab Equipment Name
GENERAL VIEW OPERATION CAB EQUIPMENT NAME G0126297 (1) Front window (7) 12 V Power supply 2 (2) Ceiling window (8) Fire extinguisher (if equipped) (3) Door handle (9) Cup holder (4) Magazine box (10) Emergency escape hammer (5) Fuse (11) USB (6) 12 V Power supply 1 (12) Ashtray WENAM00550_1...
Page 83: Controls And Gauges Names
OPERATION GENERAL VIEW CONTROLS AND GAUGES NAMES 17 18 19 20 G0126298 (1) Radio (10) Fuel control dial (2) Lock lever (11) Lamp switch (3) L.H. work equipment control lever (12) Swing lock switch (4) Travel pedal (13) Revolving lamp switch (5) Travel lever (14) Attachment control pedal (6) Machine monitor...
Page 84: Machine Monitor Equipment Name
GENERAL VIEW OPERATION (19) 1st-line attachment proportional switch (25) Lock lever automatic lock cancel switch (20) Breaker operation switch (26) Cigarette lighter (21) Horn switch (27) Engine shutdown secondary switch (22) Room lamp switch (28) Additional lamp switch (23) Pump secondary drive switch (29) Lower wiper switch (if equipped) (24) Swing parking brake cancel switch MACHINE MONITOR EQUIPMENT NAME...
Page 85 OPERATION GENERAL VIEW (29) Message display (35) Wiper pilot lamp (30) Air conditioner pilot lamp (36) Swing lock pilot lamp (31) Engine oil level caution lamp (37) Engine preheating pilot lamp (32) Air cleaner clogging caution lamp (38) Auto-deceleration pilot lamp (33) Charge level caution lamp (39) Function switches (F1 to F6) (34) Engine oil pressure caution lamp...
Page 86: Explanation Of Components
EXPLANATION OF COMPONENTS OPERATION EXPLANATION OF COMPONENTS The explanation of devices necessary to operate the machine is as follows. For the correct, safe, and comfortable operations, understand the methods to operate the equipment, and the contents of the displays correctly. MACHINE MONITOR EQUIPMENT AA: Standard screen, EE: Warning or Error screen, DD: Guidance screen (1) Warning display...
Page 87 OPERATION EXPLANATION OF COMPONENTS BASIC OPERATION OF MACHINE MONITOR BASIC OPERATION OF MACHINE MONITOR WHEN YOU START ENGINE IN NORMAL SITUATION • When you turn the starting switch to the ON position, the start screen GG is shown. • 2 seconds after the start screen GG is shown, the screen changes to the check before starting screen BB. •...
Page 88 EXPLANATION OF COMPONENTS OPERATION BASIC OPERATION OF MACHINE MONITOR WHEN YOU START ENGINE WHILE ENGINE SHUTDOWN SECONDARY SWITCH IS ON If the starting switch key is turned to the ON position while the engine shutdown secondary switch (1) is set to the ON position (engine is stopped), the screen in the figure is shown and the engine cannot be started.
Page 89 When the starting switch is turned to the OFF position, the end screen JJ or KK is shown for 5 seconds, and the screen goes off. End screen when there is a message When there is a message from Komatsu distributor, the mes- sage is shown on the end screen. In such case, turn the starting switch to the ON position to check the message again, and make a reply if it is required.
Page 90 • Unauthorized use of ID by unauthorized person Consult your Komatsu distributor for setting, change, or cancel of the operator identification function. • If the “ID Number Input (with SKIP)” of “Operator ID Setting” is set, start screen GG changes to “Operator ID Input”(with SKIP) screen LL when you turn the starting switch key to the ON position.
Page 91 OPERATION EXPLANATION OF COMPONENTS When the switch F1 is pushed on “Operator ID Input” (with SKIP) screen LL, the screen changes to the check before starting screen BB without ID number input. If you input an incorrect ID number for 3 times, you cannot in- put the ID number in the next 5 minutes.
Page 92 EXPLANATION OF COMPONENTS OPERATION BASIC OPERATION OF MACHINE MONITOR WHEN YOU START ENGINE IN AB- NORMAL SITUATION • If there is a problem when you start the engine, the check before starting screen BB changes to the mainte- nance time warning screen CC, warning screen FF, or error screen EE. •...
Page 93 OPERATION EXPLANATION OF COMPONENTS If there is any error existing, “！” is shown on top of switch F5. switch F5. Press switch F5 to check the detail of the current abnormality. “Current Abnormality” screen is shown. BASIC OPERATION OF MACHINE MONITOR WHEN TROUBLE OCCURS WHILE OPERATE MACHINE •...
Page 94 EXPLANATION OF COMPONENTS OPERATION If there is any error existing, “！” is shown on top of switch F5. Press switch F5 to check the detail of the error. “Current Abnor- mality” screen is shown. 3-16 WENAM00550_1...
Page 95 OPERATION EXPLANATION OF COMPONENTS BASIC OPERATION OF MACHINE MONITOR WHEN YOU OPERATE WORK EQUIPMENT, SWING, TRAVEL, AND ATTACHMENTS When you do the operations that follow, the screen changes to the screen which shows images of bird's eye view display of KomVision and camera. •...
Page 96: Warning Display
EXPLANATION OF COMPONENTS OPERATION WARNING DISPLAY NOTICE If one of action levels “L01” to “L04” is shown on the machine monitor, there is a problem on the ma- chine. Do the applicable action instructed on the “List of action level displays and required actions”. The caution lamp lights up in red when an action level is shown, and it gives a warning to stop the ma- chine immediately, or to stop the current operation temporarily.
Page 97 Color of caution Action urgency level lamp Operates con- Lights up in red Stop the machine immediately and consult your Komatsu High tinuously distributor for inspection and maintenance. ↑ Operates inter- Lights up in red Stop the operation, move the machine to a safe area, │...
Page 98 EXPLANATION OF COMPONENTS OPERATION CAUTION LAMP LIST NOTICE • These caution lamps do not guarantee the condition of the machine. Do not simply rely on the cau- tion lamp for checks-before-starting (start-up inspection). Be sure to get off the operator's seat and check each item directly.
Page 99 OPERATION EXPLANATION OF COMPONENTS Display color/Machine condition (Action level) Symbol Type of caution lamp Yellow White Blue Engine stopped at high tempera- DEF system high tempera- ture ture stop caution lamp (L01) Abnormal Abnormal Engine system caution lamp (L04, L03) (L01) Low oil pressure Engine oil pressure caution...
Page 100 EXPLANATION OF COMPONENTS OPERATION Display color/Machine condition (Action level) Symbol Type of caution lamp Yellow White Blue Seat belt is not Seat belt caution lamp fastened Abnormal Engine overrun caution lamp (L02) Excessive fre- Excessive fre- Auto idle stop sudden stop quency quency caution lamp...
Page 101 OPERATION EXPLANATION OF COMPONENTS CURRENT ABNORMALITY DISPLAY SWITCH When there is an error, “!” is shown above the switch F5. If you push the switch F5 when “!” is shown, you can change the screen on the monitor display to the “Current Abnormality” screen.
Page 102 EXPLANATION OF COMPONENTS OPERATION ENGINE COOLANT TEMPERATURE CAUTION LAMP The engine coolant temperature caution lamp gives a warning about states caused by engine coolant temperature. When abnormal The caution lamp lights up in red, and the action level “L02” is shown.
Page 103 The caution lamp lights up in red, and the alarm buzzer oper- ates intermittently. Stop the operation, move the machine to a safe area, and consult your Komatsu distributor for inspection and maintenance. When the action level “L01” is shown The caution lamp lights up in yellow.
Page 104 The caution lamp lights up in red, and the alarm buzzer oper- ates intermittently. Stop the operation, move the machine to a safe area, and consult your Komatsu distributor for inspection and maintenance. When the action level “L01” is shown The caution lamp lights up in yellow.
Page 105 OPERATION EXPLANATION OF COMPONENTS KDPF SOOT ACCUMULATION CAUTION LAMP The KDPF soot accumulation caution lamp gives a warning that the soot is accumulated in KDPF or the filtering function of KDPF lowered abnormally. When abnormal The caution lamp lights up in red, and the action level “L03” is shown.
Page 106 DEF system exceeds the specified number of times. When the caution lamp lights up in yellow, consult Komatsu distributor for inspection and maintenance as needed. To stop the engine, after you run it at low idle for approximately 5 minutes.
Page 107 The caution lamp lights up in red, and the alarm buzzer oper- ates intermittently. Stop the operation, move the machine to a safe area, and consult your Komatsu distributor for inspection and maintenance. When the action level “L01” is shown The caution lamp lights up in yellow.
Page 108 There is a possibility that the engine durability is decreased, but the work can be done. When you complete the operation, be sure to do the inspection and maintenance. Consult your Komatsu distrib- utor for inspection and maintenance as needed.
Page 109 The caution lamp lights up in yellow. Some functions can be restricted, but the machine can be operated. When you complete the operation, be sure to do the inspection and maintenance. Consult your Komatsu distrib- utor for inspection and maintenance as needed.
Page 110 Check the coolant level in the reservoir tank of the radiator and add coolant. For details, see “CHECK COOL- ANT LEVEL, ADD COOLANT (3-157)”. If it occurs again in a short time, the coolant possibly leaks from the radiator. Consult your Komatsu distributor for the inspection and maintenance.
Page 111 The caution lamp lights up in yellow, and the action level “L01” is shown. A problem is found in the air conditioner system. Consult your Komatsu distributor for the inspection and mainte- nance as fast as possible. OVERLOAD CAUTION LAMP...
Page 112 When there is an abnormality: The caution lamp lights up in red and the alarm buzzer sounds intermittently and indicates action level “L03”. Stop the machine immediately and ask your Komatsu distribu- tor for inspection. REMARK This indicator comes on with a red light also when the quick coupler locking/unlocking operations are carried out.
Page 113 “MAINTENANCE (3-77)”. • By default, the maintenance time caution lamp (yellow) is set to light up when the remaining time becomes 30 hours or below. You can change this setting. Consult your Komatsu distributor to change it. 3-35 WENAM00550_1...
Page 114 EXPLANATION OF COMPONENTS OPERATION SEATBELT CAUTION LAMP The seat belt caution lamp is shown when the seat belt is not fastened. It goes off when the seat belt is fastened. To fasten the seat belt, see “FASTEN AND UNFASTEN SEAT BELT (3-177)”.
Page 115 Camera image is not shown on the machine monitor when the caution lamp lights up. When you operate the machine, visually check the safety around the machine. When you complete the operation, be sure to do the inspection and maintenance. Consult your Komatsu distrib- utor for inspection and maintenance as needed.
Page 116 EXPLANATION OF COMPONENTS OPERATION PILOT DISPLAY AND METER DISPLAY G0126300 Pilot display (1) Engine stop pilot lamp (8) Swing lock pilot lamp (2) Lock lever pilot lamp (9) Preheating pilot lamp (3) Aftertreatment devices regeneration pilot lamp (10) Auto-deceleration pilot lamp (4) Aftertreatment devices regeneration disable pilot (11) Working mode display lamp...
Page 117: Pilot Display
OPERATION EXPLANATION OF COMPONENTS PILOT DISPLAY The pilot display consists of the pilot lamps to check the operation state of each function. The pilot lamp lights up when each function is in operation while the starting switch is at ON position. PREHEATING PILOT LAMP The preheating pilot lamp is shown while the engine at 0℃...
Page 118: Message Display
Pilot lamp is not lit: Air conditioner OFF MESSAGE DISPLAY The message display lights up when there is a message from Komatsu. To read the message, see “MESSAGE DISPLAY (3-87)”. Lights up in green (A): There is an unread message.
Page 119 OPERATION EXPLANATION OF COMPONENTS ENGINE STOP PILOT LAMP The engine stop pilot lamp is shown while the engine is stop- ped. It goes off when the engine is started. WORK EQUIPMENT LOCK PILOT LAMP The work equipment lock pilot lamp lights up when the work equipment is locked.
Page 120 EXPLANATION OF COMPONENTS OPERATION AFTERTREATMENT DEVICES REGENERATION PILOT LAMP CAUTION • During the aftertreatment devices regeneration, the exhaust gas temperature can become higher than the conventional models. Keep away from the exhaust pipe outlet to prevent burn injury. Do not let the flammable materials come near the exhaust pipe outlet to prevent a fire. •...
Page 121 OPERATION EXPLANATION OF COMPONENTS IDLING STOP GUIDANCE If no operation is done for 5 minutes or longer, and when the engine runs at idle, “Avoid long time idling.” is shown on the monitor. When you wait for the work or stop operation for a short period, stop the engine to decrease fuel consumption.
Page 122 EXPLANATION OF COMPONENTS OPERATION FUEL LOW LEVEL GUIDANCE If the starting switch key is set to the ON position when the available operating hours estimated from the remaining fuel level and the latest average fuel consumption is less than 8 hours, “FUEL LOW LEVEL GUIDANCE”...
Page 123 OPERATION EXPLANATION OF COMPONENTS METER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE The engine coolant temperature gauge shows the engine cool- ant temperature. During operations, it is correct if the pointer is in the green range. If the pointer exceeds the red range (A) position during operations, the overheat prevention system activates.
Page 124: Hydraulic Oil Temperature Gauge
EXPLANATION OF COMPONENTS OPERATION HYDRAULIC OIL TEMPERATURE GAUGE The hydraulic oil temperature gauge shows the hydraulic oil temperature. During operations, it is correct if the pointer is in the green range. When you do operations, if the pointer is near the red range (A), hydraulic oil temperature is 102℃...
Page 125: Fuel Gauge
OPERATION EXPLANATION OF COMPONENTS FUEL GAUGE The fuel gauge shows the quantity of fuel in the fuel tank. During operations, it is correct if the pointer is in the green range. During operations, if the pointer is near the red range (A), the fuel quantity is 52ℓ...
Page 126 EXPLANATION OF COMPONENTS OPERATION SERVICE METER The service meter shows the total hours of operation of the ma- chine. While the engine is in operation, the service meter increases even if the machine does not move. The service meter advan- ces 0.1 every 6 operation minutes, regardless of the engine speed.
Page 127: Eco Gauge
OPERATION EXPLANATION OF COMPONENTS ECO GAUGE ECO gauge shows the instantaneous fuel consumption. The instantaneous fuel consumption shows the fuel consump- tion ratio at each moment, and changes by the work load and engine speed. When the gauge is in the green range A, the instantaneous fuel consumption is at a good to medium level.
Page 128 EXPLANATION OF COMPONENTS OPERATION REMARK • Immediately after turning the starting switch to ON position and during the engine is running, DEF level cau- tion lamp (1) lights up in white. However, this does not indicate abnormality. • In cold weather, DEF level cannot be detected and DEF level caution lamp (1) lights up in white for approxi- mately 1 hour.
Page 129: Monitor Switch
OPERATION EXPLANATION OF COMPONENTS MONITOR SWITCH (1) Function switch (5) Wiper switch (2) Working mode selector switch (6) Window washer switch (3) Auto-deceleration switch (7) Buzzer cancel switch (4) Travel speed selector switch (8) Air conditioner switch 3-51 WENAM00550_1...
Page 130 EXPLANATION OF COMPONENTS OPERATION FUNCTION SWITCH AND GUIDANCE ICON • There are 6 function switches (1) (F1 to F6) at the bottom of the monitor display. The function of each switch changes in response to the content of the screen. •...
Page 131: Operation
For machines ready for installation of attachment, the attachment mode is additionally shown. If you would like to automatically set the P, E, L, B, ATT/P, and ATT/E modes (initial option settings) when you start the engine, ask Komatsu distributor to change the settings. Operation procedure When you push the working mode selector switch, the working mode selector screen is shown on the monitor.
Page 132 EXPLANATION OF COMPONENTS OPERATION Push the switches F3, F4 at the bottom of the screen or the working mode selector switch to change the mode selection one by one. If you do not touch a switch for more than 5 seconds, the working mode selected at that time is automatical- ly set, and the screen moves to step 3 and step 4.
Page 133 OPERATION EXPLANATION OF COMPONENTS AUTO-DECELERATION SWITCH Auto-deceleration switch is a switch that automatically decrea- ses the engine speed when the control lever is in the NEU- TRAL position and turns on the function that makes fuel con- sumption less. Auto-deceleration pilot lamp is lit: Auto-deceleration ON Auto-deceleration pilot lamp is not lit: Auto-deceleration OFF Each time you push the switch, the auto-deceleration turns on or off.
Page 134 EXPLANATION OF COMPONENTS OPERATION TRAVEL SPEED SELECTOR SWITCH WARNING • Stop the machine always before you change the travel mode with travel speed selector switch. If you change between high speed travel and low speed travel while you drive the machine, travel di- rection can deviate even in straight travel.
Page 135: Wiper Switch
OPERATION EXPLANATION OF COMPONENTS WIPER SWITCH Wiper switch operates the windshield wiper at the front window glass. Each time you push the switch, the operation changes as “INT” →“ON”→STOP (lamp goes out). When the “INT” of wiper pilot lamp is lit: Windshield wiper oper- ates intermittently.
Page 136 EXPLANATION OF COMPONENTS OPERATION WINDOW WASHER SWITCH When you push the window washer switch, window washer flu- id is sprayed to the front window glass. When you let go of the switch, it stops. • If you continue to push the switch when the windshield wiper is stopped, wind washer fluid is sprayed and wind- shield wiper operates continuously at the same time.
Page 137: Air Conditioner Switch
OPERATION EXPLANATION OF COMPONENTS AIR CONDITIONER SWITCH The air conditioner switch and numeric keypad consist of 9 types of switches. For details of the switches, see “AIR CONDITIONER (3-238)”. 3-59 WENAM00550_1...
Page 138: Function Switch
EXPLANATION OF COMPONENTS OPERATION FUNCTION SWITCH Function switch operation on the standard screen CAMERA IMAGE SELECTOR SWITCH On the standard screen, push the switch F3 to change the display to the camera image only. On the standard screen by pressing the switch F3, you can en- large the bird's eye view display, switch to the camera image screen.
Page 139 OPERATION EXPLANATION OF COMPONENTS The shooting direction of the camera on the machine is as fol- lows. (1) Rear of machine (2) Left side of machine (3) Right side of machine (4) Front right of machine (option) G0126302 Operation on the camera image display screen This is the explanation on the method to change the camera image display on the monitor.
Page 140 EXPLANATION OF COMPONENTS OPERATION • The air conditioner can be operated. When you operate the air conditioner switch, the screen changes to the “A/C Setting” screen. When the screen changes to “A/C Setting ” screen, push the switch F6 to go back to the full-screen camera image.
Page 141 OPERATION EXPLANATION OF COMPONENTS • When you push the wiper switch, you can operate the windshield wiper. Even if the wiper switch is pushed, the full-screen camera image display does not change to a different screen or go back to the standard screen. •...
Page 142 EXPLANATION OF COMPONENTS OPERATION USER MENU You can check settings and state while the machine is stopped. Change the screen as standard screen > menu switch, and the screen changes to the user menu screen. There are items that follow in the user menu. (a) Energy Saving Guidance (b) Machine Setting (c) Aftertreatment Devices Regeneration...
Page 143: User Menu Screen
OPERATION EXPLANATION OF COMPONENTS USER MENU SCREEN The user menu screen is shown only while the machine stops fully. (1) Switch (2) Guidance icon If no switch is operated for 30 seconds when the user menu screen is shown, the screen automatically goes back to the previous screen or the standard screen.
Page 144: Energy Saving Guidance
EXPLANATION OF COMPONENTS OPERATION ENERGY SAVING GUIDANCE You can check the settings and information of the items that fol- low for the energy saving on “Energy Saving Guidance” menu screen. • Operation Records • ECO Guidance Records • Average Fuel Consumption Record •...
Page 145: Average Fuel Consumption Record
OPERATION EXPLANATION OF COMPONENTS AVERAGE FUEL CONSUMPTION RECORD Change the screen as “Energy Saving Guidance” > “Average Fuel Consumption Record”, and the screen shown in the figure is shown. You can do operations that follow on the “Average Fuel Con- sumption Record”...
Page 146: Configurations
EXPLANATION OF COMPONENTS OPERATION CONFIGURATIONS Change the screen as “Energy Saving Guidance” > “Configura- tions”, and the screen shown in the figure is shown. You can change the settings that follow on “Configurations” menu screen. • Average Fuel Consumption Display •...
Page 147 OPERATION EXPLANATION OF COMPONENTS ECO GAUGE DISPLAY Change the screen as “Energy Saving Guidance” > “Configura- tions” > “ECO Gauge Display”, and the screen shown in the fig- ure is shown. The display/non-display of the ECO gauge can be selected on “ECO Gauge Display”...
Page 148: Machine Setting
EXPLANATION OF COMPONENTS OPERATION MACHINE SETTING You can set the items that follow which are related to the ma- chine on the “Machine Setting” menu screen. The figure shows the screen of a machine ready for installation of work equipment attachment such as breaker and crusher. Standard machine •...
Page 149: Breaker Setting
OPERATION EXPLANATION OF COMPONENTS BREAKER SETTING Change the screen as “Machine Setting” > “Breaker Set- ting”, and the screen shown in the figure is shown. Select the desired setting with the switches F3 and F4. Push the switch F6. When you cancel the selection, push the switch F5. G0140670 You can change the settings that follow on “Breaker Setting”...
Page 150 EXPLANATION OF COMPONENTS OPERATION CHANGE BREAKER FLOW SETTING Select the item to be changed on “Breaker Setting” screen. G0140670 Push the switch F2. “Breaker Oil Flow Rate Setting” screen is shown. The left end of the graph is the minimum adjustable flow rate.
Page 151: Attachment Setting
OPERATION EXPLANATION OF COMPONENTS ATTACHMENT SETTING Change the screen as “Machine Setting” > “Attachment Setting”, and the screen shown in the figure is shown. Select the desired setting with the switches F3 and F4. Push the switch F6. When you cancel the selection, push the switch F5. REMARK If you select the “No Attachment”, it will be P mode when the working mode is ATT/P, E mode when ATT/E.
Page 152 EXPLANATION OF COMPONENTS OPERATION CHANGE ATTACHMENT FLOW SETTING Select the item to be changed on “Attachment Setting” screen. G0140679 Push the switch F2. “2-Way Attachment Oil Flow Rate Setting” screen is shown. The left end of the graph is the minimum adjustable flow rate.
Page 153: Auto Idle Stop Timer Setting
OPERATION EXPLANATION OF COMPONENTS AUTO IDLE STOP TIMER SETTING Auto idle stop function stops the engine to reduce fuel consumption when a period of time has passed in low idle state. It operates when all of the conditions below are satisfied. •...
Page 154: Aftertreatment Devices Regeneration
G0140684 For the setting of the aftertreatment devices regeneration, see OPERATION, “HANDLE Komatsu Diesel Particulate Filter (KDPF) (3-124)”. SCR INFORMATION Each item in “” menu (d) is for displaying . On “SCR Information” menu screen, you can see the informa- tion related to SCR and DEF.
Page 155: Maintenance
Change”. The items shown on “Maintenance” menu screen are as follows. List of maintenance items and default interval settings For the items of which the remaining interval is “-”, consult your Komatsu distributor and set the applicable interval. Interval Interval...
Page 156: Reset Remaining Time For Maintenance
EXPLANATION OF COMPONENTS OPERATION RESET REMAINING TIME FOR MAINTENANCE Select an item to reset the remaining time on “Maintenance” screen, and then hold down the switch F6 for 1.5 seconds or longer. “Maintenance Due Time Reset” screen is shown. If the time you push the switch F6 is too short, operation sound can sound but the screen does not change to the screen shown in the figure.
Page 157: Monitor Setting
OPERATION EXPLANATION OF COMPONENTS MONITOR SETTING You can check the settings and information that follow for the monitor on “Monitor Setting” menu screen. • Screen Adjustment • Screen Adjustment (Camera) • Clock Adjustment • GPS Synchronization • Calendar • Time G0140689 •...
Page 158: Screen Adjustment (Camera)
EXPLANATION OF COMPONENTS OPERATION SCREEN ADJUSTMENT (CAMERA) You can adjust the brightness of the screen on “Screen Adjustment (Camera)” menu. Adjust the brightness if the screen is dark. When the “*” mark is shown on the right top of the “Screen Adjustment” screen, brightness adjustment cannot be done in some cases.
Page 159: Gps Synchronization
OPERATION EXPLANATION OF COMPONENTS GPS SYNCHRONIZATION Change the screen as “Monitor Setting” > “Clock Adjustment” > “GPS Synchronization”, and the screen shown in the figure is shown. If the machine has KOMTRAX which has been established, the date and time shown on the machine monitor are synchronized with information from GPS satellites when the “GPS Synchroni- zation”...
Page 160: Time Setting
EXPLANATION OF COMPONENTS OPERATION TIME SETTING You can adjust the time of the machine monitor on “Time” screen. Change the screen as “Monitor Setting” > “Clock Adjust- ment” > “Time”, and the screen shown in the figure is shown. “Hour” display part becomes yellow. Adjust the “Hour”...
Page 161: Daylight Saving Time
OPERATION EXPLANATION OF COMPONENTS 12H/24H MODE You can set the clock for the 12-hour display (AM/PM) or 24-hour display on “12h/24h Mode” screen. Change the screen as “Monitor Setting” > “Clock Adjustment” > “12h/24h Mode”, and the screen shown in the figure is shown. The clock is set to the 12-hour display (AM/PM).
Page 162: Language Settings
EXPLANATION OF COMPONENTS OPERATION LANGUAGE SETTINGS You can change the language for the machine monitor display on the “Language” screen. The languages that can be selected are as follows. English, Japanese, French, Spanish, Portuguese, Italian, German, Swedish, Dutch, Danish, Norwegian, Fin- nish, Icelandic, Czech, Hungarian, Polish, Slovak, Slovene, Romanian, Croatian, Estonian, Latvian, Lithuanian, Bulgarian, Greek, Turkish, Serbian Change the screen as “Monitor Setting”...
Page 163: Operator Id
When the operator identification function is disabled, “Operator ID” is not shown on “Monitor Setting” menu screen. REMARK Consult your Komatsu distributor for setting, change, or cancel of the operator identification function. Operator identification function NOTICE Do not use the operator identification function to enhance the security. The operator identification func- tion has no effect of security enhancement or theft prevention.
Page 164: Key-On Camera Position
EXPLANATION OF COMPONENTS OPERATION CHANGE OPERATOR ID DURING IDENTIFICATION STATE Change the screen as “Monitor Setting” > “Operator ID ”, and the screen shown in the figure is shown. Input the operator ID with numeric keypad of the monitor switch. •...
Page 165: Message Display
G0140818 Reply to your Komatsu distributor. G0140820 Not lit There is no message. Messages from Komatsu distributor are shown on the machine monitor. (A) Title of message When no message has been received, “No message.” is shown. (B) Serial No. of message...
Page 166: Reply To Message
EXPLANATION OF COMPONENTS OPERATION REPLY TO MESSAGE When the “Numeric Input” column is shown, send a reply with the procedures that follow. Check the number of the selected item which is described in the body text (D). Input the number of selected item with monitor switch. Inputted value is shown in the “Numeric Input”...
Page 167: Names Of Switch Panel Equipment
OPERATION EXPLANATION OF COMPONENTS NAMES OF SWITCH PANEL EQUIPMENT G0126303 (1) Starting switch (10) Breaker operation switch (2) Fuel control dial (11) Horn switch (3) Lamp switch (12) Room lamp switch (4) Swing lock switch (13) Pump secondary drive switch (5) Seat heater switch (14) Swing parking brake cancel switch (6) Quick coupler main switch...
Page 168: Starting Switch
EXPLANATION OF COMPONENTS OPERATION (19) Additional lamp switch (20) Lower wiper switch (if equipped) STARTING SWITCH You can start and stop the engine with the starting switch. (A): OFF position The starting switch key can be put in or removed. The electrical current to the electrical system other than the room lamp stops being supplied, and the engine stops.
Page 169: Lamp Switch
OPERATION EXPLANATION OF COMPONENTS REMARK This machine uses optimum matching control of main pump by the electronic control for the engine. There is a dead zone on the dial in response to the working mode as shown below, but this is not a problem. Range (c) Dead zone (constant engine speed) P mode: 29%...
Page 170: Seat Heater Switch
EXPLANATION OF COMPONENTS OPERATION SEAT HEATER SWITCH This seat heater switch is used to warm the seat. (a) ON Start the seat heating and the seat becomes warm. (b) OFF Stops the seat heating. When the seat heater switch is turned ON, the heater in the seat operates.
Page 171: Horn Switch
OPERATION EXPLANATION OF COMPONENTS 1ST-LINE ATTACHMENT PROPORTIONAL SWITCH Operate the 1st-line attachment proportional switch when you use general attachments. You can increase or decrease the flow rate by the switch stroke. It operates only when the attachment mode is set on the ma- chine monitor.
Page 172 EXPLANATION OF COMPONENTS OPERATION PUMP SECONDARY DRIVE SWITCH NOTICE • Do not use the pump secondary switch when the machine is normal. If there is an abnormal part, immediately repair it. • If you use this switch in the emergency position by mistake when the machine is normal, “L03” is shown on the machine monitor.
Page 173: Cigarette Lighter
If you canceled the switch to move the machine or the work equipment temporarily, stop the engine, move back the switch to the NORMAL position (b). After that, consult your Komatsu distributor for repair. CIGARETTE LIGHTER NOTICE This cigarette lighter provides 24V power supply. Do not use as a power supply for a 12V device.
Page 174 EXPLANATION OF COMPONENTS OPERATION ENGINE SHUTDOWN SECONDARY SWITCH NOTICE • Do not use the engine shutdown secondary switch when the machine is normal. If there is an abnor- mal part, immediately ask for repair. • If the engine shutdown secondary switch is set to the stop engine position by mistake while the machine op- erates normally, “Engine Shutdown Secondary SW in Operation”...
Page 175 OPERATION EXPLANATION OF COMPONENTS Additional lamp switch is used to light up the additional lamp (headlamp, rear lamp) (a) ON position Lights up (b) OFF position Not lit LOWER WIPER SWITCH (if equipped) The lower wiper switch actuates the cab front lower wiper. (a) Wiper position It actuates the lower wiper.
Page 176: Names Of Control Levers And Pedals
EXPLANATION OF COMPONENTS OPERATION NAMES OF CONTROL LEVERS AND PEDALS RKA55280 (1) Lock lever (5) Blade control lever (with auto-deceleration mecha- nism) (2) L.H. work equipment control lever (with auto-decel- eration mechanism) (6) Attachment control lever (with auto-deceleration mechanism) (3) Travel lever (with pedal, auto-deceleration mecha- nism) (7) Lock pin (with auto-deceleration mechanism) (4) R.H.
Page 177 • When the viscosity of the hydraulic oil used is higher than that of the genuine hydraulic oils which Komatsu recommends For the genuine hydraulic oil which Komatsu recommends, see “RECOMMENDED FUEL, COOL- ANT, AND LUBRICANT (7-4)”. • When the system has a failure.
Page 178: Travel Lever
EXPLANATION OF COMPONENTS OPERATION When this function is activated, the operation of the work equipment, swing, travel, and attachment operation are locked automatically and the message as in the figure is shown. While this function is in operation, the machine does not move even when each control lever and attachment control switch are operated while the lock lever is in the FREE position (F).
Page 179 OPERATION EXPLANATION OF COMPONENTS Use the travel lever to shift the travel direction to forward/ reverse. Description in the ( ) is for the pedal operation. (a) FORWARD The travel lever is pushed forward. (The front part of the pedal is pushed.) (b) REVERSE The travel lever is pulled back.
Page 180: Blade Control Lever
EXPLANATION OF COMPONENTS OPERATION BLADE CONTROL LEVER The blade control lever is used to control the blade. (a): LOWER (b): RAISE G0098885 ATTACHMENT CONTROL PEDAL Use the attachment control pedal to control the attachment. For details on how to handle the attachment control pedal, see “HANDLE MACHINE READY FOR INSTALLATION OF AT- TACHMENT (6-28)”.
Page 181: Other Equipment
OPERATION EXPLANATION OF COMPONENTS OTHER EQUIPMENT OPEN AND CLOSE CEILING WINDOW WARNING When you stand up from the operator's seat, set the lock lever securely to the LOCK position. If the lock lever is at the FREE position and the control lever, control pedal, or control switch is touched by mis- take, it can cause serious personal injury or death.
Page 182 If the wiper blade is in incorrect stowing position (b), lift it to move to the correct stowing position (a). If the wiper blade cannot go back to the correct stowing position, con- sult your Komatsu distributor for repair. (a) Correct stowing position The wiper blade is on the cab.
Page 183 OPERATION EXPLANATION OF COMPONENTS Hold the handles (A) (2 places) on the right and left top sides of the front window, and pull the levers (B) (2 places) to release the lock on the top of the front window. Upper part of the front window comes off. Pull up the lower handle (C) with your left hand from the inside of the operator's cab, hold the top handle (D) and pull it up with your right hand, and then push it against the lock catches (E) at the rear of the cab securely to lock the window.
Page 184 If the wiper blade is in incorrect stowing position (b), lift it to move to the correct stowing position (a). If the wiper blade cannot go back to the correct stowing position, con- sult your Komatsu distributor for repair. 3-106 WENAM00550_1...
Page 185 OPERATION EXPLANATION OF COMPONENTS (a) Correct stowing position The wiper blade is on the cab. (b) Incorrect stowing position The wiper blade is on the glass. Hold the right and left handles (A), and pull down the lever (B) to release the lock. Hold the handle (C) at the bottom of the front window with your left hand and the handle (D) at the top with your right hand, push the window to the front, and lower it slowly.
Page 186 EXPLANATION OF COMPONENTS OPERATION Visually check that the lever (B) is securely in the LOCK position. • The lock is engaged if the arrow on the lock case (F) is the same as the position of the arrow on the lever (B).
Page 187 OPERATION EXPLANATION OF COMPONENTS Push the lock (2) to the free position (F). Tooth (A) will come up, so push the glass against it, then release the lock (2) and secure the top of the glass. When the lock (2) is released, it will return to LOCK position (L) and tooth (A) will go down.
Page 188: Slide Door
EXPLANATION OF COMPONENTS OPERATION SLIDE DOOR CAUTION • Before you use the machine, make sure that the slide door is locked regardless whether the door is open or closed. • Park the machine on a flat ground when you open or close the door. Be very careful when you open or close the slide door if the machine is stopped on a slope.
Page 189: Magazine Box
OPERATION EXPLANATION OF COMPONENTS COVER WITH LOCK Use the starting switch key to open and close the cover with lock. Insert the key until the part (A) touches, and then turn the key. If the key is turned when it is not inserted to the end, it can be damaged.
Page 190 EXPLANATION OF COMPONENTS OPERATION ASHTRAY NOTICE When you remove the ashtray, if you hold the ashtray lid (A) and twist it, the ashtray can be damaged. The ashtray is in the position shown in the figure. G0126308 Be sure to extinguish your cigarette before you put it in the ash- tray, and close the lid (A).
Page 191 POWER SUPPLY OUTLET NOTICE When you install an electrical component which is not a product of Komatsu, limit its capacity to maxi- mum 240W in the 24V specification (equivalent to 10A). When you install an electrical component of ca- pacity larger than above value, consult your Komatsu distributor.
Page 192 EXPLANATION OF COMPONENTS OPERATION 24V power supply NOTICE Do not use as a power supply for a 12V device. This will cause failure of the equipment. When the cigarette lighter is removed, its socket can be used as a power supply. The capacity of the cigarette lighter is 85W (24V x 3.5A).
Page 193 OPERATION EXPLANATION OF COMPONENTS FUSE NOTICE Before you replace the fuses, be sure to turn the starting switch to the OFF position. Check that the sys- tem operating lamp is not lit. Then turn the battery disconnect switch key to the OFF position. •...
Page 194 EXPLANATION OF COMPONENTS OPERATION Fuse Name of circuit (21) CAB head light (1) (22) CAB rear light (23) Lower wiper (24) Quick coupler (25) Refuel pump (26) CAB head light (2) G0126309 (27) Optional light (28) Auto greasing (29) Optional heater (30) Spare (31)
Page 195: Fusible Link
OPERATION EXPLANATION OF COMPONENTS FUSIBLE LINK NOTICE Before you replace the fusible link, be sure to turn the starting switch to the OFF position. Make sure that the system operating lamp is not lit, and then turn the battery disconnect switch key to the OFF position. If the phenomenon that follows occurred, open circuit of the fu- sible link is the possible cause.
Page 196: Fire Extinguisher
(option) You can fix the fire extinguisher in the position (A) shown in the figure. For the parts necessary to fix it, consult your Komatsu distribu- tor. The directions are described on the nameplate attached to the fire extinguisher. Carefully read and understand them for the possibility of fires.
Page 197 OPERATION EXPLANATION OF COMPONENTS You can find the battery disconnect switch when you pull up the rubber cover (2). REMARK Operate it while the system operating lamp (3) is not lit. (O): OFF position The switch key (1) can be inserted or removed. The current from the battery is cut out.
Page 198 Maximum circuit pressure: 34.8MPa {355kgf/cm • Be sure that the quick coupler has been installed by a qualified technician. Consult your Komatsu distributor if there is anything unclear. 3-120...
Page 199 OPERATION EXPLANATION OF COMPONENTS QUICK COUPLER EQUIPMENT NAME G0126373 1. Quick coupler main switch 4. Piping (quick coupler release direction) 2. Quick coupler operation switch 5. Adjustable pressure adjustment valve (Attach) 3. Piping (quick coupler lock direction) 6. Adjustable pressure adjustment valve (Release) 3-121 WENAM00550_1...
Page 200 EXPLANATION OF COMPONENTS OPERATION REMOVE ATTACHMENT WARNING Pressure in the system can cause injury. Follow all instructions in “REMOVE AND INSTALL ATTACH- MENT (6-36)”. If the bucket or attachment has any hydraulic connections to the machine these must be disconnected before proceeding.
Page 201 This machine has a system installed to give a warning if there is a failure to maintain pressure in the quick coupler system. If the buzzer sounds in the cab make sure that the cause is clarified be- fore continuing work. In particular check for leaks in the system. If in doubt call your Komatsu dis- tributor.
Page 202 EXPLANATION OF COMPONENTS OPERATION HANDLE Komatsu Diesel Particulate Filter (KDPF) CAUTION • In this machine, the exhaust gas temperature during the aftertreatment devices regeneration will be higher than that of the previous models, and the temperature possibly remains high even after the regeneration is completed.
Page 203 • Komatsu recommends the use of Komatsu genuine engine oil for KDPF. If the engine oil other than Komat- su genuine oil for the KDPF is used, the cleaning interval of the KDPF filters can become short or there can be bad effects on the engine such as reduced lubrication function by deteriorated oil and it can cause ma- chine failure.
Page 204 EXPLANATION OF COMPONENTS OPERATION REMARK If heavy-duty operation is done for more than 30 minutes with the fuel control dial between the Low idle (MIN) position and the High idle (MAX) position, soot is accumulated much and the action level “L03” can be shown, but it is not a problem. Do the manual stationary regeneration, and then turn the fuel control dial to above the midpoint between the Low idle (MIN) position and the High idle (MAX) position to continue the opera-...
Page 205 OPERATION EXPLANATION OF COMPONENTS When the degree of urgency is high • If the KDPF soot accumulation caution lamp (2) lights up in red (action level (3): “L03”), screen (D) is shown. • If the lock lever is set to the LOCK position or all the con- trol levers and pedals are set in the NEUTRAL position, the screen changes to “Aftertreatment Devices Regenera- tion”...
Page 206 EXPLANATION OF COMPONENTS OPERATION MANUAL STATIONARY REGENERATION CAUTION During the aftertreatment devices regeneration, the ex- haust gas temperature can become higher than the con- ventional models. Do not come near the exhaust pipe out- let and around the aftertreatment devices not to get burn injury.
Page 207 OPERATION EXPLANATION OF COMPONENTS REMARK After you push the switch F6 in the step 6, the screen of the figure is possibly shown. This shows that the opera- tions in the steps 1 to 4 were not done correctly or there is a failure other than the KDPF soot accumulation abnormal- ity.
Page 208 EXPLANATION OF COMPONENTS OPERATION The screen in the figure is shown during the manual sta- tionary regeneration. It can take 40 minutes or longer to complete the manual stationary regeneration. Do not touch switches on the screen nor operate the fuel control dial until the regenera- tion is completed and the screen goes back to the stand- ard screen.
Page 209 OPERATION EXPLANATION OF COMPONENTS NOTICE Even if the regeneration is disabled, the KDPF soot accu- mulation caution lamp (1) lights up if soot is accumulated and the manual stationary regeneration is required. When the KDPF soot accumulation caution lamp lights up, move the machine to a safe place and do the manual stationary regeneration.
Page 210 EXPLANATION OF COMPONENTS OPERATION REMARK • You can check that the regeneration is disabled by the sta- tus that the aftertreatment devices regeneration disable pi- lot lamp (2) is lit on the standard screen. • You can cancel the setting of regeneration disable when you turn the starting switch to the OFF position.
Page 211 OPERATION EXPLANATION OF COMPONENTS If you select the “Regeneration Disable” and push the switch F6, the regeneration stops. REMARK In the regeneration to protect the system, there is a possi- bility that the regeneration cannot be disabled. It is not a problem.
Page 212 EXPLANATION OF COMPONENTS OPERATION CANCEL AFTERTREATMENT DEVICES REGENERATION DISABLE CAUTION When you cancel the regeneration disable, move the machine to a safe place, check that there is no per- son or flammable material around the machine, and start the operation to cancel the regeneration disa- ble.
Page 213 The Komatsu's Urea is composed of two systems; the DEF system and the SCR catalyst assembly. DEF is supplied from the DEF system into the exhaust system.
Page 214 DEF and that mixture is used, the devices will not operate correctly, and they will not applicable for the exhaust gas regulations. In addition, it can cause failures in the engine sys- tem. If the liquid other than DEF is added, consult your Komatsu distributor. Operation of urea SCR system The urea SCR system automatically starts operation immediately after the engine is started.
Page 215 OPERATION EXPLANATION OF COMPONENTS The DEF level caution lamp (1) on the machine monitor lights up, the alarm buzzer operates, and the action level is shown on the machine monitor. And then, the engine output is derated step by step. In the action level “L03 (Low level Inducement)”...
Page 216 EXPLANATION OF COMPONENTS OPERATION • Continuous Warning: The alarm buzzer operates in “Triple-beep alarm”. 2 segments of the DEF level gauge light up in red. The DEF level caution lamp (1) lights up in red. No action level is shown. Push the switch F6 to show “SCR Information”...
Page 217 “L04 (Severe Inducement)” is shown. If “L03” is shown, move the machine to a safe area and consult your Komatsu distributor. The content of the warning can be checked on “SCR Informa- tion” screen of the user menu.
Page 218 EXPLANATION OF COMPONENTS OPERATION • Warning: The alarm buzzer does not operate. The DEF system caution lamp (1) lights up in yellow. Action level “L01” lights up in yellow on the machine moni- tor (2) for 2 seconds and goes off. Push the switch F6 to show “SCR Information”...
Page 219 “Severe Inducement”, move the machine to a safe area after it is restored, and consult your Komatsu distributor for inspection and maintenance. At “Severe Inducement”, the engine output can be re- stored to “Low level Inducement” temporarily. The operator can restore engine power through the machine monitor.
Page 220 EXPLANATION OF COMPONENTS OPERATION Do the operations that follow. Push the switch F6 to show “SCR Information” screen of the user menu. If the lock lever is set to the LOCK position or the travel lever and control levers are in the NEUTRAL position for over 3 sec- onds, “SCR Information”...
Page 221 OPERATION EXPLANATION OF COMPONENTS “SCR Information” screen message (5): 2 “Without treat- ment, engine power will be derated.” Move the machine to a safe area, and consult your Komat- su distributor. “Continuous Warning” continues for 5 hours. The remain- ing time (hours and minutes) to “Low level Inducement” is shown in the column (6) of “SCR Information”...
Page 222 When action level “L03” is shown, move the machine to a safe area and consult your Komatsu distributor. The content of the warning can be checked on “SCR Information” screen of the user menu.
Page 223 OPERATION EXPLANATION OF COMPONENTS “SCR Information” screen message (5): 1 “Please inspect and maintain SCR system.” The engine output is derated. Move the machine to a safe area, and consult your Komat- su distributor. Unless all failures are repaired after “Warning” started, the Inducement changes to “Continuous Warning”...
Page 224 If Inducement goes to “Severe Inducement” and it becomes necessary to restore engine power temporarily, use the engine power restoration function to move the machine to a safe area and consult your Komatsu distributor for inspection and maintenance. Temporary Restoration from Inducement Temporary Restoration from Inducement is one of the Inducement strategies included in the urea SCR system.
Page 225 OPERATION EXPLANATION OF COMPONENTS When F6 is pushed, the menu window pops up in the low- er half of “SCR Information”. The menu window that pops up in the lower half of “SCR information” shows the figures A and B every 15 seconds. Push F6 while the pop-up menu of window B is shown.
Page 226 Inducement is shown. The alarm starts again from the previous Inducement. If this occurs, use “Temporary Restoration from Inducement” and move the machine to a safe area, and consult your Komatsu distributor. The maximum duration of power restoration is 30 minutes and 3 operations are allowed.
Page 227 2000 hours. • If the machine is operated without the DEF filter at- tached, or with the filter other than Komatsu genuine parts, foreign materials may enter the DEF pump and DEF injector which will cause failure of the machine.
Page 228 When the battery disconnect switch is turned to the OFF position, it can prevents the consumption of the battery power, but the functions of KOMTRAX stop at the same time. • If the power supply cable of KOMTRAX system device needs to be disconnected, consult your Komatsu distributor. 3-150...
Page 229: Machine Operations And Controls
If there is an abnormality, make sure to repair it or consult your Komatsu distributor. If one of these is left not repaired, it can be a cause of a fire.
Page 230 16. Check around the aftertreatment devices for exhaust gas leakage. Check the pipe that connects the turbocharger to the aftertreatment devices and also the KDPF connec- tions for leakage of exhaust gas (and deposition of soot). If a problem is found, consult your Komatsu dis- tributor for repair.
Page 231: Drain Water And Sediment From Fuel Tank
OPERATION MACHINE OPERATIONS AND CONTROLS CHECK BEFORE STARTING Check the items that follow before you start the engine for the day's work. DRAIN WATER AND SEDIMENT FROM FUEL TANK Open the inspection cover on the right side. Put a container to collect drained fuel below the drain hose (1).
Page 232 MACHINE OPERATIONS AND CONTROLS OPERATION Open the fuel filter inspection cover on the right side of the machine. Set the valve (5) to the CLOSE position (S). Put a container to collect fuel below the fuel prefilter car- tridge. Loosen the drain valve (3) and drain water and sediment from the transparent cup (2), and also drain all the fuel ac- cumulated in the fuel prefilter cartridge (1).
Page 233: Check Oil Level In Hydraulic Tank, Add Oil
OPERATION MACHINE OPERATIONS AND CONTROLS CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL WARNING • Wait for the temperature of the machine to go down, and then start the work. Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. •...
Page 234 MACHINE OPERATIONS AND CONTROLS OPERATION Add oil through the oil filler port (F) of the hydraulic tank until the oil level comes between the H and L levels of the sight gauge (G). G0126354 NOTICE Do not add oil more than the H level. The hydraulic cir- cuit can be damaged, or oil will spurt out.
Page 235 OPERATION MACHINE OPERATIONS AND CONTROLS CHECK COOLANT LEVEL, ADD COOLANT WARNING • Do not open the expansion tank unless necessary. Check the coolant with the fluid level gauge when the engine is cold. • Wait for the temperature to go down, and turn the cap of the expansion tank slowly to release the pressure, and remove the cap carefully.
Page 236: Check Oil Level In Engine Oil Pan, Add Oil
• If the fuse is blown frequently or if a short circuit seems to have occurred in the electric wiring, im- mediately consult your Komatsu distributor to investigate the cause and repair it. • Keep the battery top surface clean. Check the vent of battery cap. If it is clogged with dirt or such, wash the battery cap with water to remove the clogging.
Page 237 OPERATION MACHINE OPERATIONS AND CONTROLS • Check that there is no wire breakage or sign of short-circuit in the electric wiring and no damage to the coating. • Check that the terminal is not loose. Retighten it if it is loose. •...
Page 238: Check Fuel Level, Add Fuel
MACHINE OPERATIONS AND CONTROLS OPERATION CHECK FUEL LEVEL, ADD FUEL WARNING When you add fuel, do not let it overflow. It can cause a fire. Wipe up all the spilled fuel fully. If it spills over soil or sand, remove that soil or sand. Fuel is flammable and dangerous.
Page 239 • If a problem is found in the refuel automatic stop system, consult your Komatsu distributor, and do not use the system until the problem is repaired. When you operate the machine at the jobsite where a fuel container and pump are not available, you can add fuel with the refuel pump from the fuel barrel.
Page 240 MACHINE OPERATIONS AND CONTROLS OPERATION Connect the fuel supply hose (2) to the quick coupler (3) of the refuel pump. G0126317 Loosen the strainer valve cap (H), and set it to the open position (J). (A) Closed position (B) Open position Put the fuel hose (2) into the barrel set near the machine.
Page 241 OPERATION MACHINE OPERATIONS AND CONTROLS When you use the automatic control cancel function, you must check the fuel level in the tank to pre- vent the leakage and spill of fuel. When fuel flows out, set the master switch (5) to the OFF position immediately to stop the refuel opera- tion.
Page 242 If you add fluid other than DEF (diesel fuel, low concentration DEF, etc.) by mistake, the caution lamp lights up and the alarm buzzer sounds to warn the abnormality. In this case, ask your Komatsu distributor for draining of the wrong fluid and inspection. DEF injector and/or DEF pump may need to be replaced.
Page 243 OPERATION MACHINE OPERATIONS AND CONTROLS After checking, turn the starting switch back to OFF posi- tion (A). If DEF is insufficient, add it. Open the cover at the right front side of the machine and clean the DEF tank cap and the area around. Turn the cap of oil filler port (2) counterclockwise.
Page 244 OFF (c) position, and turn off the working lamp. After the check, set the starting switch to the OFF position. If the lamp does not light up, a burned-out bulb and open circuit are the possible causes. Consult your Komatsu distributor for repair.
Page 245 OPERATION MACHINE OPERATIONS AND CONTROLS ADJUSTMENT ADJUST OPERATOR SEAT WARNING When you adjust the position of the operator's seat, be sure to set the lock lever to the LOCK position to prevent contact with the control levers accidentally. • Be sure to adjust the operator's seat before you start each operation or when the operators change shift. •...
Page 246: Adjust Seat Height
MACHINE OPERATIONS AND CONTROLS OPERATION RECLINE SEAT Pull up the lever (2) and set the seat back to a position which is comfortable for operation, then release the lever (2). REMARK • The seat can be reclined more when the seat is pushed to the front.
Page 247 OPERATION MACHINE OPERATIONS AND CONTROLS ADJUST ARMREST ANGLE Armrest (5) can be moved up to 90° by hand. • By turning the dial (6) at the bottom of the armrest (5) by hand, it is possible to make vertical angle adjustment fine- If the dial is turned clockwise (counterclockwise), the arm- rest is raised (lowered).
Page 248 MACHINE OPERATIONS AND CONTROLS OPERATION ADJUST SUSPENSION SEAT HARDNESS If you press the suspension switch (8), the suspension be- comes hard. If you pull the suspension switch (8), the suspension becomes soft. (Air hissing sound will be heard.) Adjustment range by the weight 60kg to 150kg G0120413 ADJUST SEAT UNIT IN FORE-AND-AFT DIRECTION Pull fore-aft adjustment lever (9) to the right, adjust the seat to...
Page 249 OPERATION MACHINE OPERATIONS AND CONTROLS HEAT SEAT CAUTION • Do not use it in the following cases to prevent low temperature burn or excessive cooling. • When a person's ability to perceive the tempera- ture is decreased • When a person's ability to feel pain is decreased •...
Page 250 MACHINE OPERATIONS AND CONTROLS OPERATION Install Insert the headrest into the hole at the seat back. When installing, turn the notch of the shaft toward the front of the machine. Push down the headrest. NOTICE When installing the headrest, operate it so that the shaft of the headrest becomes straight.
Page 251 OPERATION MACHINE OPERATIONS AND CONTROLS ADJUST MIRRORS WARNING Be sure to adjust the mirrors before the work. If the mirrors are not correctly adjusted, you cannot keep the visibility. There is a danger that you will suffer from injury or that a serious personal injury or death is caused.
Page 252 MACHINE OPERATIONS AND CONTROLS OPERATION ADJUST LEFT FRONT MIRROR (A) CAUTION To prevent the machine movement during the work, make sure that the machine is in the conditions that follow before you start the work. • The machine is parked on a level ground. •...
Page 253 OPERATION MACHINE OPERATIONS AND CONTROLS When you loosened the mounting bolts to adjust the angle, be sure to adjust the mirror to the specified position. Adjust the bracket (1). Mounting position (2): 35mm Mounting angle (3): 30° Tightening torque of mounting bolt (4): 15.0 to 19.6Nm {1.53 to 2.00kgfm} Adjust the mirror (5).
Page 254 MACHINE OPERATIONS AND CONTROLS OPERATION ADJUST REAR MIRROR (B) CAUTION To prevent the machine movement during the work, make sure that the machine is in the conditions that follow before you start the work. • The machine is parked on a level ground. •...
Page 255 OPERATION MACHINE OPERATIONS AND CONTROLS FASTEN AND UNFASTEN SEAT BELT WARNING • Before you fasten the seat belt, make sure that there is no abnormality in the belt mounting bracket or mounting belt. If it is worn or damaged, replace it. •...
Page 256 If a password is set, the input display screen will be shown on the monitor screen. When the input display screen is shown on the monitor screen, input the password and push the switch F6. REMARK To set, change, or cancel the password, consult your Komatsu distributor. 3-178 WENAM00550_1...
Page 257 ID and push the switch F6. REMARK Consult your Komatsu distributor for setting, change, or cancel of the operator identification function. Do the checks that follow on the machine monitor. The buzzer operates for approximately 2 seconds and...
Page 258 MACHINE OPERATIONS AND CONTROLS OPERATION If there is an item for which the maintenance time has expired, the maintenance time caution lamp (17) lights up in red for 30 seconds. Push the switch F6 to check the items that the mainte- nance due time has expired, and immediately do the maintenance.
Page 259: Start Engine
OPERATION MACHINE OPERATIONS AND CONTROLS START ENGINE START ENGINE IN NORMAL WEATHER WARNING • When you start the engine, be sure to sit on the operator's seat. • Do not start the engine by short circuit of the engine starting circuit. Serious personal injury or death or fire can be caused.
Page 260 MACHINE OPERATIONS AND CONTROLS OPERATION Turn the starting switch (3) key to the START position (C). The engine starts. After the engine starts, let go of the starting switch (3) key. The key automatically goes back to the ON position (B). REMARK When the engine is started, the battery voltage can de- crease suddenly by the temperature and the battery condi-...
Page 261: Start Engine In Cold Weather
OPERATION MACHINE OPERATIONS AND CONTROLS START ENGINE IN COLD WEATHER WARNING • When you start the engine, be sure to sit on the operator's seat. • Do not start the engine by short circuit of the engine starting circuit. Serious personal injury or death or fire can be caused.
Page 262 MACHINE OPERATIONS AND CONTROLS OPERATION Set the fuel control dial (2) to the Low idle (MIN) position. Hold the key in the starting switch (3) to the HEAT position (D). The preheating pilot lamp (4) lights up, and approximately after 30 seconds, the preheating pilot lamp (4) flashes for 10 seconds to show that the preheating is completed.
Page 263 OPERATION MACHINE OPERATIONS AND CONTROLS • Do not touch the control lever and the control pedal while the engine oil pressure caution lamp is lit even when the engine is started. • If the engine oil pressure caution lamp does not go off after 4 to 5 seconds, stop the engine immediately.
Page 264: Operations And Checks After You Start Engine
Make sure that there is no abnormal noise when the engine is at low idle or when the engine speed is in- creased. If there is an abnormal noise, immediately consult your Komatsu distributor for inspection. When there is an ab- normal noise and if the engine is kept operated, the engine can be damaged.
Page 265 OPERATION MACHINE OPERATIONS AND CONTROLS OPERATE ENGINE IN BREAK IN PERIOD NOTICE This machine has been fully inspected and parts have been adjusted at the factory before shipment, but if you apply a full load before the parts are fitted in, it will have a bad effect to the performance and serv- ice life of the machine.
Page 266 MACHINE OPERATIONS AND CONTROLS OPERATION ENGINE WARM-UP OPERATION NOTICE • Do not suddenly accelerate the engine before the warm-up operation is completed. • Do not run the engine at low idle or high idle with no load for 20 minutes or more. This will have a bad effect on the environment and also on the internal structure of the engine.
Page 267 OPERATION MACHINE OPERATIONS AND CONTROLS CANCEL AUTOMATIC WARM-UP OPERATION If you need to cancel the automatic warm-up operation in an emergency and change the engine speed to low idle, do as follows. Set the fuel control dial (1) to the High idle (MAX) position, and hold it for 3 seconds or more.
Page 268 MACHINE OPERATIONS AND CONTROLS OPERATION HYDRAULIC SYSTEM WARM-UP OPERATION WARNING • Before you do the hydraulic component warm-up operation, make sure that there is no person or obstacle in the area around the machine, operate the horn, and then start the operation. •...
Page 269 OPERATION MACHINE OPERATIONS AND CONTROLS Set the working mode to the P mode (heavy-duty opera- tion mode). It quickens the warm-up of the hydraulic component. For the working mode setting, see “WORKING MODE SE- LECTOR SWITCH (3-53)”. Hold the red part at the top of the lock lever (3), and then slowly and securely set it to the FREE position (F).
Page 270 Fuel gauge (18): Pointer is in green range. 12. Make sure that there is no abnormal exhaust gas color, noise, or vibration. If a problem is found, consult your Komatsu distributor. 13. In cold weather (ambient temperature is lower than 0℃), do the operation that follows.
Page 271 OPERATION MACHINE OPERATIONS AND CONTROLS Turn the fuel control dial (4) to the High idle (MAX) po- sition. Continue the work equipment operation of step 6 for 3 to 5 minutes. Make sure that the hydraulic oil temperature caution lamp (7) shows the correct temperature. •...
Page 272 MACHINE OPERATIONS AND CONTROLS OPERATION Boom operation RAISE (E) ←→ LOWER (F) Arm operation IN (B) ←→ OUT (A) Bucket operation CURL (D) ←→ DUMP (C) Swing operation LEFT (G) ←→ RIGHT (H) Release the swing lock switch (2), make sure that the swing lock pilot lamp (19) is not lit, and do the swing oper- ation.
Page 273 OPERATION MACHINE OPERATIONS AND CONTROLS Attachment operation One way (A) ←→ Other way (B) 16. Make sure that the hydraulic oil temperature caution lamp (7) shows the correct temperature. • Display (A) when temperature is correct: Caution lamp background (C) is blue •...
Page 274 MACHINE OPERATIONS AND CONTROLS OPERATION AIR CONDITIONER WARM-UP OPERATION NOTICE To prevent the failure of the air conditioner compressor, do the warm-up operation of the air conditioner one time a day when you use the air conditioner for the first time. If you turn on the air conditioner while the engine runs at high speed, the excessive load is applied to the air conditioner compressor, and it can cause the seizure in the air conditioner compressor.
Page 275 OPERATION MACHINE OPERATIONS AND CONTROLS Working mode display Working mode Monitor display P mode For heavy-duty operations For operations with emphasis on fuel con- E mode sumption L mode For operations with fine control B mode For breaker operations 3-197 WENAM00550_1...
Page 276 MACHINE OPERATIONS AND CONTROLS OPERATION Working mode Monitor display For operations of 2-way attachment such as ATT/P mode crusher For 2-way attachment work such as crusher ATT/E mode (when fuel efficiency is important) 3-198 WENAM00550_1...
Page 277: Stop Engine
If the engine is stopped during the aftertreatment devices regeneration, the components may be damaged. When stopping the engine, stop the aftertreatment devices re- generation first according to “HANDLE Komatsu Diesel Particu- late Filter (KDPF) (3-124)”, then stop the engine after running it at low idle for approximately 5 minutes.
Page 278 MACHINE OPERATIONS AND CONTROLS OPERATION REMARK • When the key in starting switch (1) is turned to OFF position (A), the engine stops but the power supply to the machine is not turned off immediately. During this period, the power is supplied to the con- troller to save the operating condition and then finish the system.
Page 279: Start Machine (Travel Forward And Reverse) And Stop Machine
OPERATION MACHINE OPERATIONS AND CONTROLS START MACHINE (TRAVEL FORWARD AND REVERSE) AND STOP MA- CHINE WARNING • Before you operate the travel levers or travel pedals, check the travel direction of the track frame. When the track frame is set toward the rear side (sprocket is at the front), the operation direction of the travel levers or travel pedals are the opposite to the travel direction of the machine (forward/reverse, right/left turn).
Page 280 (5) slowly to move the machine. When you drive the machine, check that the travel alarm operates normally. If the travel alarm does not operate, consult your Komatsu distributor for repair. REMARK •...
Page 281 (5) slowly to move the machine. When you drive the machine, check that the travel alarm operates normally. If the travel alarm does not operate, consult your Komatsu distributor for repair. REMARK •...
Page 282: Steer Machine
MACHINE OPERATIONS AND CONTROLS OPERATION STEER MACHINE STEER MACHINE (CHANGE DIRECTION) WARNING Before you operate the travel levers or travel pedals, check the travel direction of the track frame. When the track frame is set toward the rear side (sprocket is at the front), the operation direction of the travel levers or travel pedals are the opposite to the travel direction of the machine (forward/reverse, right/left turn).
Page 283 OPERATION MACHINE OPERATIONS AND CONTROLS To change the direction of machine to the right or left in FORWARD travel To turn left, move the left travel lever back to the NEUTRAL po- sition. (A): FORWARD left turn (B): REVERSE left turn REMARK To turn right, operate the right travel lever in the same manner.
Page 284: Swing Machine
MACHINE OPERATIONS AND CONTROLS OPERATION SWING MACHINE WARNING • The tail of the machine extends outside the tracks. Before swing operation, make sure that the area around the machine is safe by visual check or mirror. • For control patterns other than the standard control method (ISO pattern), see the ATTACHMENTS AND OPTIONS.
Page 285: Operate Work Equipment
OPERATION MACHINE OPERATIONS AND CONTROLS OPERATE WORK EQUIPMENT WARNING • For control patterns other than the standard control method (ISO pattern), see the ATTACHMENTS AND OPTIONS. • If the auto-deceleration is enabled, operate the travel lever and travel pedal carefully. If you operate the travel lever and travel pedal when the engine speed decreases by the auto-deceleration func- tion, the engine speed will suddenly increase.
Page 286 MACHINE OPERATIONS AND CONTROLS OPERATION • When you operate the blade (Machines with blade) Operate the blade control lever back and forth. If the auto deceleration is enabled, when the work equipment control lever is set to the NEUTRAL position while the machine is stopped, the engine speed is low even if the fuel control dial is at the High idle (MAX) position.
Page 287: Handle Working Mode
OPERATION MACHINE OPERATIONS AND CONTROLS HANDLE WORKING MODE SELECT WORKING MODE NOTICE Set the machine in breaker mode when you do breaker work. Do not do the breaker operation in a mode other than the breaker mode. There is a danger that it damages the hydraulic component. Select the working mode that matches the work conditions or purpose.
Page 288 MACHINE OPERATIONS AND CONTROLS OPERATION Select a working mode that you want to set, and push the switch F6. The setting is applied and the screen goes back to the standard screen. When the switch F5 is pushed, the mode does not change and the screen goes back to the standard screen.
Page 289: Prohibited Operations
OPERATION MACHINE OPERATIONS AND CONTROLS PROHIBITED OPERATIONS WARNING • Do not operate the work equipment control lever while the machine travels. • If the auto-deceleration is activated, operate carefully the travel lever and the travel pedal. If you op- erate the travel lever and the travel pedal when the engine speed decreases by the auto-decelera- tion function, the engine speed will suddenly increase.
Page 290 MACHINE OPERATIONS AND CONTROLS OPERATION DO NOT PERFORM THE WORK IF FOREIGN MATERIAL IS ACCUMULATED AROUND HYDRAULIC CYLINDER If operation is continued while something sticks between the hydraulic cylinder and work equipment, the cylinder rod may bend and break. Do not perform the work while something sticks between the hydraulic cylinder and work equipment.
Page 291 OPERATION MACHINE OPERATIONS AND CONTROLS PROHIBITION OF OPERATIONS BY MACHINE DROP FORCE Do not use the dropping force of the machine to excavate. PROHIBITION OF DIGGING OPERATION AT AN ANGLE WHEN TEETH DO NOT ENGAGE When the bucket teeth do not engage a hard rock in digging upper side, do not do the digging work while the machine swings.
Page 292 MACHINE OPERATIONS AND CONTROLS OPERATION PROHIBITION OF OPERATIONS WHEN MACHINE IS NOT IN STABLE CONDI- TION If the undercarriage is not stable during the work, torsional load occurs at the frames, which makes the machine’s service life shorter. When the undercarriage is not stable, make a pile of soil under the front of the tracks to make the machine stable.
Page 293 OPERATION MACHINE OPERATIONS AND CONTROLS PROHIBITION OF SUDDEN LEVER OR PEDAL SHIFT DURING HIGH SPEED TRAVEL (1) Do not operate the levers and pedals suddenly nor take any other action to move the machine quickly. (2) Do not operate the levers or pedals suddenly from FOR- WARD (A) to REVERSE (B) (or from REVERSE (B) to FOR- WARD (A)).
Page 294 MACHINE OPERATIONS AND CONTROLS OPERATION PROHIBITION OF LONG-TIME CONTINUOUS TRAVEL OPERATIONS When you drive the machine at high speed for 1.5 hours or more, the temperature of the lubrication oil in the track rollers and final drive rises to a high temperature. There is a danger that this high temperature lubrication oil damages the oil seal and causes oil leakage.
Page 295: Work Precautions
OPERATION MACHINE OPERATIONS AND CONTROLS WORK PRECAUTIONS PRECAUTIONS WHEN MACHINE TRAVELS Obstacles such as large boulders and stubs must be avoided or removed in advance. Do not ride over them as long as pos- sible. If the machine travels over an obstacle, a large impact can occur and cause damage to the machine (especially the undercarriage).
Page 296 MACHINE OPERATIONS AND CONTROLS OPERATION PRECAUTIONS WHEN YOU USE BLADE Do not hit the blade against an object such as a rock mass that can put a heavy load on the blade. It makes the lives of the blades and cylinders shorter. G0126341 PRECAUTIONS FOR BLADE POSITION DURING BACKHOE OPERATION If you operate the backhoe operation when the blade is on the...
Page 297 OPERATION MACHINE OPERATIONS AND CONTROLS ALLOWABLE DEPTH OF WATER OR SOIL NOTICE When the machine goes out of water, if you set the ma- chine to climbing posture with a steep angle of 15° or more, it is possible that the rear part of the upper structure stays in the water, which can cause damage to the radiator fan because water is screwed by the fan.
Page 298: Precautions When You Work On Slope
MACHINE OPERATIONS AND CONTROLS OPERATION PRECAUTIONS WHEN YOU WORK ON SLOPE WARNING • Avoid the work on a slope as much as possible. There is a danger that the machine loses the bal- ance and tips over when you operate swing operation and work equipment operation. It is very dangerous to swing downhill when the buck- et is loaded.
Page 299 OPERATION MACHINE OPERATIONS AND CONTROLS • When the machine travels down the steep slope, use the travel lever and fuel control dial to keep the travel speed low. When the machine travels down the steep slope with an angle of 15° or more, set it to the posture shown in the fig- ure with the sprocket (1) downward and lower the engine speed.
Page 300: Escape From Soft Ground
MACHINE OPERATIONS AND CONTROLS OPERATION ESCAPE FROM SOFT GROUND When you operate the machine, be careful not to get stuck in mud. If the machine gets stuck in mud, do as follows to get the machine out. ESCAPE WHEN TRACK ON ONE SIDE IS STUCK NOTICE When the boom or arm is used to lift the machine, push the ground with the bucket bottom.
Page 301: Recommended Applications
OPERATION MACHINE OPERATIONS AND CONTROLS RECOMMENDED APPLICATIONS In addition to the following, it is possible to further increase the range of applications by using various attach- ments. DIGGING WORK BACKHOE WORK It is suitable for excavation of the areas that are lower than the machine. When the state of the work equipment is as shown in the figure (angle between the bucket cylinder and the link, and angle be- tween the arm cylinder and the arm are 90°), the digging force...
Page 302: Loading Work
MACHINE OPERATIONS AND CONTROLS OPERATION LOADING WORK The machine can load rocks and soils, etc. to a dump truck. You can put the dump truck in an area which provides a small swing angle and good visibility for better efficiency in loading. The loading will be easier when the machine is at the rear of the dump track.
Page 303: Lift Objects With Lifting Device
In the absence of such a device, the machine can only be used as an earth moving machine. If the machine is not equipped with the appropriate hook, contact the Komatsu distributor. Fitting a lifting hook must be monitored and certified by the competent Authorised Body.
Page 304: Replace And Invert Bucket
MACHINE OPERATIONS AND CONTROLS OPERATION REPLACE AND INVERT BUCKET WARNING • When you do the work, wear the protective equipment such as goggles, hard hat, and gloves. When you hit the pins with a hammer, pieces of metal could fly and cause serious injury. •...
Page 305 OPERATION MACHINE OPERATIONS AND CONTROLS Because the O-ring (3) is easily damaged, when you in- stall the bucket (4), do the operations as follows. Put the O-ring (3) to the position on the arm (5) shown in the figure. After you insert the pins, put the O-ring (3) into the regular groove.
Page 306 MACHINE OPERATIONS AND CONTROLS OPERATION Invert the removed bucket. Align the arm (5) to the mounting part (1). Align the link (6) to the mounting part (2). Install the grease applied pin (A) to the mounting part (1). Install the pin (B) to the mounting part (2). Attach the O-ring (3) to the mounting part (1) of the arm (5) and the bucket (4).
Page 307: Park Machine
OPERATION MACHINE OPERATIONS AND CONTROLS PARK MACHINE WARNING • Park the machine on a firm, level ground. If you need to park the machine on a slope, lock the machine with safeguard to prevent the machine movement, and thrust the work equipment into the ground. This time, set the blade to the ground toward root side.
Page 308: Check After You Finish Work
MACHINE OPERATIONS AND CONTROLS OPERATION Align the directions of undercarriage and upper structure so that the bottom of the bucket is horizontal and groun- ded. Lower the blade to the ground. Hold the red part at the tip of the lock lever (3) to operate it, and set it to the LOCK position (L).
Page 309: Lock
OPERATION MACHINE OPERATIONS AND CONTROLS LOCK Position to be locked Be sure to lock the parts that follow. Use the starting switch key to lock and unlock all these places. (1) Fuel tank filler cap (2) Hydraulic tank oil filler cap (3) Operator's cab door (4) Toolbox and grease pump storage cover (5) Left front cover of the machine...
Page 310 MACHINE OPERATIONS AND CONTROLS OPERATION CLOSE CAP WITH LOCK Screw in the cap until it becomes tight, then insert the key into the key slot. Turn the starting switch key to CLOSE position (B), then remove the key. 3-232 WENAM00550_1...
Page 311 OPERATION MACHINE OPERATIONS AND CONTROLS OPEN AND CLOSE COVER WITH LOCK OPEN COVER WITH LOCK Insert the key into the key slot. Turn the key counterclockwise and pull the cover handle. Position (A): OPEN (UNLOCK) Position (B): CLOSE (LOCK) If there is a stay to support the cover, open the cover until the stay is put in the LOCK position.
Page 312 MACHINE OPERATIONS AND CONTROLS OPERATION OPEN AND CLOSE ENGINE HOOD CAUTION • Before you open or close the engine hood, stop the machine on a level ground, lower the work equipment to the ground, and stop the engine. • When you open it, hold the grip with your hand until the hood support stay is securely set to the lock position.
Page 313 OPERATION MACHINE OPERATIONS AND CONTROLS LOCK ENGINE HOOD Hold the grip (3) of engine hood , and remove the hood support stay (2) from the hood fixing position. Check that stay (2) is set in sliding position, and then close the engine hood.
Page 314 MACHINE OPERATIONS AND CONTROLS OPERATION OPEN AND CLOSE OPERATOR CAB DOOR CAUTION • Park the machine on a flat ground when you open or close the door. Be very careful when you open or close the slide door if the machine is stopped on a slope. There is a danger that door opens and closes suddenly by its own weight.
Page 315 OPERATION MACHINE OPERATIONS AND CONTROLS LOCK OPERATOR CAB DOOR Pull the door handle (1) rearward, and cancel the lock (3). Hold the door handle (1) and the grip (2) to close the cab door. Insert the key into the key slot. Turn the key clockwise (B) and remove it.
Page 316: Air Conditioner
If a problem is sensed in the equipment or sensor in the air conditioner, the air conditioner system caution lamp lights up on the monitor screen. If the caution lamp lights up, consult your Komatsu distrib- utor for inspection and maintenance. Ventilation while cooling •...
Page 317: Air Conditioner Equipment
OPERATION AIR CONDITIONER AIR CONDITIONER EQUIPMENT (1) OFF switch (6) FRESH/RECIRC air selector switch (2) Fan switch (7) Monitor (3) Temperature control switch (8) Air conditioner switch (4) Vent selector switch (9) Sunlight sensor (5) Auto switch OFF SWITCH The OFF switch is used to stop the fan and air conditioner. REMARK When the OFF switch is pushed, the monitor screen does not change to the air conditioner adjustment screen.
Page 318: Fan Switch
AIR CONDITIONER OPERATION FAN SWITCH The fan switch is used to adjust the air flow. You can adjust the air flow to 6 levels. Push the △ switch to increase the air flow. • Push the ▽ switch to decrease the air flow. •...
Page 319 OPERATION AIR CONDITIONER VENT SELECTOR SWITCH The vent selector switch is used to select the vents. • When the vent selector switch is pushed, the liquid crystal display (LCD) on the monitor display changes and air blows out from the vents shown. •...
Page 320: Auto Switch
AIR CONDITIONER OPERATION AUTO SWITCH The auto switch is used to change the operation to the auto- matic operation. It changes the air flow, vents, recirculated air, and fresh air au- tomatically in accordance with the set temperature and the am- bient environment.
Page 321: Sunlight Sensor
OPERATION AIR CONDITIONER AIR CONDITIONER SWITCH Use the air conditioner switch to turn on or off the cooling/dry heating function. • When the fan is in operation (air flow level is shown on the air conditioner display), the air conditioner turns on or off each time the air conditioner switch is pushed.
Page 322: Operate Air Conditioner
AIR CONDITIONER OPERATION OPERATE AIR CONDITIONER The air conditioner can be operated automatically or manually. Select the method of operation as you like. USE AUTOMATIC OPERATION Push the Auto switch. The set temperature (a) and the air flow rate (b) are shown on “A/C Setting”...
Page 323 OPERATION AIR CONDITIONER STOP AUTOMATIC OPERATION Push the OFF switch. The air conditioner stops. 3-245 WENAM00550_1...
Page 324 AIR CONDITIONER OPERATION USE MANUAL OPERATION Push △ or ▽ on the fan switch to adjust the air flow. Check that the set temperature (a) and the air flow rate (b) are shown on “A/C Setting” screen of the monitor. Push the air conditioner switch.
Page 325 OPERATION AIR CONDITIONER Push the vent selector switch to select the vent. The display for the vent (c) of the “A/C Setting” screen on the monitor changes by the selection. Push the FRESH/RECIRC air selector switch to select the recirculation of the air in the cab (RECIRC) or the intake of fresh air (FRESH).
Page 326 AIR CONDITIONER OPERATION COLD AIR TO FACE AND WARM AIR TO FEET To blow cold air to the face and warm air to the feet, operate the air conditioner as follows. Adjust the air flow with the fan switch. Check that the set temperature (a) and the air flow rate (b) are shown on “A/C Setting”...
Page 327 OPERATION AIR CONDITIONER Use the FRESH/RECIRC air selector switch to select the recirculation of the air in the cab (RECIRC) or the intake of fresh air (FRESH). 3-249 WENAM00550_1...
Page 328 AIR CONDITIONER OPERATION USE DEFROSTER Adjust the air flow with the fan switch. Check that the set temperature (a) and the air flow rate (b) are shown on “A/C Setting” screen of the monitor. Push the vent selector switch, and set the display of the vent (c) as shown in the figure (f) or (g).
Page 329 OPERATION AIR CONDITIONER Push the temperature control switch to set the temperature to max. heating. Adjust the vents (A), (B1), (B2) to let the air blow come to the window glass. REMARK The vents (C), (D) are fixed type. When you get the window clear or dehumidify it, push the air conditioner switch to activate cooling or dry heating.
Page 330: Radio
® The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Komatsu Group is under license. Other trademarks and trade names are those of their respec- tive owners. 3-252...
Page 331: Volume Control Switch
OPERATION RADIO DISPLAY You can check the information that follow on the display. (A) Source name, frequency, and other character/numeric infor- mation are shown. (B) Unit of frequency is shown. (C) Lights up when a stereo signal is received while FM1 or FM2 is selected.
Page 332: Menu Switch
RADIO OPERATION TUNING/TIME SETTING SWITCH Use the tuning/time setting switch to do operations as follows. • Selection of radio frequency • Clock setting • Sound adjustment • Selection of each setting menu PRESET/AUDIO SWITCH When the radio source is selected You can preset and select the radio station by the preset/audio switch.
Page 333 OPERATION RADIO NOTICE In the cases that follow, there is a possibility that you hear the noise. • When the input plug is pulled out while USB is selected • When the plug of the equipment to connect is pulled out or pushed in Connect the external device to the USB port to play back the music file.
Page 334: Operate Radio
RADIO OPERATION OPERATE RADIO OPERATE RADIO WHEN YOU LISTEN ADJUST FREQUENCY Push the radio band selector switch (1) and select FM1, FM2, or AM. Push the tuning/time adjustment switch (2) to adjust the frequency. • Push the UP switch to increase the frequency. •...
Page 335: Preset Station
OPERATION RADIO PRESET STATION Hold down one of 1 to 6 of the preset/audio switches (1) during radio reception. The preset number flashes 3 times, then the currently received frequency is shown. The currently received frequency is registered to the selected preset number.
Page 336 RADIO OPERATION The playback mode changes in the order of Shuffle Playback, Shuffle Playback by Album, and Shuffle Stop each time the 2 of the preset/audio switch (1) is pushed. The Shuffle Playback by Album is not available for some models of device. PLAY MUSIC WITH Bluetooth®...
Page 337: Radio Setting
OPERATION RADIO RADIO SETTING Hold down the display selector switch (1) to move to the menu screen of the setting mode. Push the tuning/time setting switch (2) to select the setting items. The setting items are different when the power supply is turned ON or OFF.
Page 338 RADIO OPERATION HIGH REGISTER RANGE (TREBLE) SETTING You can set it only when the power is turned on. You can adjust the sound quality of the treble part which is outputted from the speaker. The default value is 0. Change the screen to the menu screen of setting mode. For details, see “RADIO SETTING (3-259)”.
Page 339: Loudness Setting
OPERATION RADIO LOUDNESS SETTING You can set it only when the power is turned on. You can increase the low register range and high register range when the sound volume is low. The default value is the OFF. Change the screen to the menu screen of setting mode. For details, see “RADIO SETTING (3-259)”.
Page 340 RADIO OPERATION PAIRING You can set it regardless of ON/OFF of power supply. ® It is an authentication of the Bluetooth device which is used on this machine. The maximum registration of the pairing is 16. From the 17th and after, the oldest information is overwritten by the newest one.
Page 341: Stow Antenna
OPERATION RADIO CHECK PRESET REGION OF RADIO You can set it only when the power is turned on. You can check the region of the radio frequency band. Change the screen to the menu screen of setting mode. For details, see “RADIO SETTING (3-259)”. Push the tuning/time setting switch (1) and select “RE- GION”.
Page 342: Komvision
KomVision is the CCTV system for Komatsu machines. PRECAUTIONS WHEN USING KomVision • In these cases, it is necessary for a Komatsu distributor to adjust the monitor screen. • When you cannot confirm the normal range of the camera visibility •...
Page 343 Swing radius of the right and Yellow left ends of the blade when the machine swings +2m (B) If the blade is replaced or the track overall length is changed, consult your Komatsu distributor to adjust the camera image. 3-265 WENAM00550_1...
Page 344: Handle Anchor Point For Tie-Off
HANDLE ANCHOR POINT FOR TIE-OFF OPERATION HANDLE ANCHOR POINT FOR TIE-OFF G0126367 You can install the personal fall-arrest equipment to the anchor point for tie-off (1). Use it when you do the work on the step (2) and on the position higher than that as a foothold. Do not set other ones than the hook of the personal fall-arrest equipment to the anchor point for tie-off.
Page 345: Handle Road Liners
OPERATION HANDLE ROAD LINERS HANDLE ROAD LINERS (Road liner specification) RECOMMENDED USE OF ROAD LINERS The road liners have good features the steel shoes do not have. However, if they are used in the same manner as the steel shoes are, the features are not used fully. Perform the optimum operation according to the condition of the site and contents of work.
Page 346: Operation
HANDLE ROAD LINERS OPERATION • Install to all the links of the right and left tracks always when installing the road liner. If it is installed partially or to only one portion, its service life is shortened remarkably. Precautions during operation When operating, observe the following.
Page 347: Transportation
Transportation When you transport the machine, select the transportation method in reference to the weight and dimensions shown in “SPECIFICATIONS: PC138US-11E0 (5-2)”. Be careful that the weight and dimension can be different by the type of track or arm, etc.
Page 348: Load And Unload A Trailer
TRANSPORTATION OPERATION LOAD AND UNLOAD A TRAILER Precautions when you load and unload WARNING Always obey the items below when you do loading or unloading operation. • Do the work on a firm and level area. • Keep a sufficient distance from the road shoulder. •...
Page 349 OPERATION TRANSPORTATION PROCEDURES TO LOAD MACHINE Park a trailer on a flat and firm ground. Keep a sufficient distance from the road shoulder. Apply the brake of the trailer. Put the chocks (1) on the tires to fix the trailer not to move. Fix the ramps (2) to the trailer as follows.
Page 350 TRANSPORTATION OPERATION If the machine is equipped with work equipment, set the work equipment at the front, and travel forward to load it; if it has no work equipment, travel in reverse to load it. Follow instructions and signals of a conductor particularly when traveling in reverse.
Page 351 OPERATION TRANSPORTATION 13. Drive the machine slowly in reverse to load it onto the trail- When the machine travels over the rear wheels of the trail- er, it becomes unstable. Drive the machine carefully and slowly. (Never operate the steering.) When the machine passes over the rear wheels, it inclines backward.
Page 352 TRANSPORTATION OPERATION Turn the mirror (A) to the stored position (S). Hold the point (a) of the mirror stay, and turn it 90°. Lock all the doors, covers and caps that have locks. Secure the machine. Select the way to secure the machine according to the lo- cal transportation form.
Page 353 OPERATION TRANSPORTATION • Method to secure the machine with tie-down point (Machine with blade) Use the tie-down holes to securely fix the ma- chine with chain or wire rope with correct strength. Let the chains and wire ropes in front of machine go through below the blade.
Page 354 TRANSPORTATION OPERATION PROCEDURES TO UNLOAD MACHINE Park a trailer on a flat and firm ground. Keep a sufficient distance from the road shoulder. Apply the brake of the trailer. Put the chocks (1) on the tires to fix the trailer not to move. Fix the ramps (2) to the trailer as follows.
Page 355 OPERATION TRANSPORTATION 12. Raise the work equipment, curl the arm below the boom, and move the machine slowly. CAUTION Check the position of the sprocket, and operate the travel lever. 13. Make the machine to be horizontal on the top of the rear end of the trailer, and stop the machine.
Page 356: Remove And Install Revolving Lamp
TRANSPORTATION OPERATION REMOVE AND INSTALL REVOLVING LAMP REMOVE REVOLVING LAMP Remove the connector (A) of the revolving lamp from wir- ing connector (B). When you remove the connector (A), pull it out while you hold the protrusion at the center of the connector. Remove the lock (C).
Page 357: Lift Machine
• The lifting method below applies to the standard specification machine. The lifting method is different by the attachments and options installed. For the lifting method of machines other than the standard specification, consult your Komatsu dis- tributor. • When you lift the machine, do not install the wire ropes to the machine fixing brackets. If the fixing brackets are used to lift the machine, the machine will be damaged.
Page 358 TRANSPORTATION OPERATION From the front of the machine, run the wire rope between the 1st track roller and the 2nd track roller. From the rear of the machine, run the wire rope between the 1st track roller and the 2nd track roller. Set the lifting angle (A) of the wire rope to 10 to 20°.
Page 359: Cold Weather Operation
If DEF or the machine equipped with DEF system cannot be stored at the outside temperature is lower than -11°C, DEF in the tank may freeze. Ask your Komatsu distributor for discharging of DEF, and keep it in the condition free from freezing.
Page 360: Battery
COLD WEATHER OPERATION OPERATION BATTERY WARNING • Battery discharges flammable gas. There is a danger of explosion. Do not let an open flame be near. • Battery electrolyte is dangerous object. Be careful not to allow the battery electrolyte to contact your eyes, skin or clothes.
Page 361: After Cold Weather Season
For the specified viscosity, see REPLACEMENT PARTS, “USE FUEL, COOLANT AND LUBRICANTS AC- CORDING TO AMBIENT TEMPERATURE (7-8)”. If the machine is parked for long time in the cold weather condition, quality of DEF may be affected by repeated freeze, ask your Komatsu distributor to inspect. 3-283 WENAM00550_1...
Page 362: Long-Term Storage Precautions
LONG-TERM STORAGE PRECAUTIONS OPERATION LONG-TERM STORAGE PRECAUTIONS PREPARATION FOR LONG-TERM STORAGE NOTICE When the machine is to be stored for a long time (1 month or more), set the machine in the posture shown in the fig- ure. If the machine is stored in a posture other than that shown in the figure, the piston rod of the hydraulic cylin- der can rust.
Page 363: Maintenance During Long-Term Storage
If SCR system has a problem, warning is given on the monitor screen and by the buzzer sound. If a prob- lem is found in the SCR system, stop the engine first, and then start it again. If the problem continues in SCR system even if you start the engine again, consult your Komatsu distribu- tor.
Page 364: Troubles And Actions
TROUBLES AND ACTIONS OPERATION TROUBLES AND ACTIONS ACTIONS WHEN YOU RUN OUT OF FUEL If you start the engine again after running out of fuel, fill up with fuel and bleed air from the fuel system. Make sure to check the fuel level to prevent running out of fuel. If the engine stopped because you run out of fuel, it is necessary to bleed a sufficient quantity of air from the fuel circuit.
Page 365: Phenomena That Are Not Failures
OPERATION TROUBLES AND ACTIONS PHENOMENA THAT ARE NOT FAILURES Note that the phenomena below are not failures. • When you go down a steep slope at low speed, a noise comes out of the travel motor brake valve. • When you start or stop the swing, a noise comes out of the brake valve. •...
Page 366: Precautions For Towing Machine
TROUBLES AND ACTIONS OPERATION PRECAUTIONS FOR TOWING MACHINE WARNING In the towing and being towed operation, a mistake in the selection of the wire rope or drawbar or pro- cedures can lead to serious personal injury or death. • Make sure to confirm that the wire rope or drawbar used for towing has ample strength for the weight of the machine being towed.
Page 367: Precautions For Severe Job Condition
OPERATION TROUBLES AND ACTIONS PRECAUTIONS FOR USING LIGHTWEIGHT TOWING HOLE WARNING In the towing and being towed operation, a mistake in the selection of the wire rope or drawbar or pro- cedures can lead to serious personal injury or death. •...
Page 368: Actions When Battery Is Discharged
TROUBLES AND ACTIONS OPERATION ACTIONS WHEN BATTERY IS DISCHARGED WARNING • Before you handle the battery, stop the engine and turn the starting switch to the OFF position. Turn the battery disconnect switch to the OFF position, and remove the key. •...
Page 369: Remove Battery
OPERATION TROUBLES AND ACTIONS REMOVE BATTERY CAUTION • Before you handle the battery, stop the engine and turn the starting switch to the OFF position. Turn the battery disconnect switch to the OFF position, and remove the key. • Disconnect the terminal from the negative (-) (ground) side to the positive (+) side in this order. To avoid sparks, do not allow an energizing object such as a tool to contact between the positive (+) terminal of battery and the machine.
Page 370 TROUBLES AND ACTIONS OPERATION PRECAUTIONS WHEN YOU CHARGE BATTERY WARNING If there is a mistake when you handle the battery, an explo- sion can occur. See the instruction manual of battery charger, and obey the items that follow. • Adjust the voltage of the battery charger by that of the battery to be charged.
Page 371: Install Battery
OPERATION TROUBLES AND ACTIONS INSTALL BATTERY CAUTION • Connect the terminal from the positive (+) side to the negative (-) side (ground side) in this se- quence. • When you replace the battery, fix the battery body with the battery mounting hardware. •...
Page 372 TROUBLES AND ACTIONS OPERATION START ENGINE WITH JUMPER CABLES WARNING • Do not connect the positive (+) terminal and negative (-) terminal. • Wear the protective eyeglasses and rubber gloves. • Be careful not to allow the normal machine to touch the failed machine.
Page 373 OPERATION TROUBLES AND ACTIONS START ENGINE WITH JUMPER CABLES Make sure that the lock levers are in LOCK position for both of the normal machine and failed machine. Make sure that the control levers are in NEUTRAL position for both of the normal machine and failed ma- chine.
Page 374: Other Trouble
Be sure to consult your Komatsu distributor for the actions shown with (*) in the remedy column. • If there can be other problem or cause than the ones that follow, consult your Komatsu distributor for repair. Problem Main causes...
Page 375 Be sure to consult your Komatsu distributor for the actions shown with (*) in the remedy column. • If there can be other problem or cause than the ones that follow, consult your Komatsu distributor for repair. Problem Main causes...
Page 376 TROUBLES AND ACTIONS OPERATION Problem Main causes Remedy Does not swing. Swing lock switch still applied Turn swing lock switch OFF. Swing brake system error Check, adjust. (*) When move of machine to safe place is required, turn the swing parking brake cancel switch to ON position temporarily.
Page 377 Be sure to consult your Komatsu distributor for the actions shown with (*) in the remedy column. • If there can be other problem or cause than the ones that follow, consult your Komatsu distributor for repair. Problem Main causes...
Page 378 TROUBLES AND ACTIONS OPERATION Problem Main causes Remedy Starting motor operates but the en- Add fuel. See CHECK BEFORE YOU Fuel is not sufficient. gine does not start. START OPERATION. Repair place where air is sucked in. Air in fuel system See EVERY 500 HOURS MAINTE- NANCE.
Page 379 If an item is not cleared even after the replacement, the machine can do the normal opera- tion, but consult your Komatsu distributor for inspection immediately. For how to replace the fuel main filter and the fuel prefilter, see “REPLACE FUEL PREFILTER CARTRIDGE (4-64)”, “REPLACE FUEL MAIN FILTER CARTRIDGE (4-79)”.
Page 380 WENAM00550_1...
Page 381: Maintenance
MAINTENANCE Before you read MAINTENANCE, read and understand SAFETY. WENAM00550_1...
Page 382: Precautions For Maintenance
Komatsu recommends to use Komatsu genuine parts specified in Parts Book as replacement parts. KOMATSU GENUINE LUBRICANTS For lubrication of the machine, Komatsu recommends you to use Komatsu genuine lubricants. Also, use oil and grease of the specified viscosity in response to the ambient temperature.
Page 383 MAINTENANCE PRECAUTIONS FOR MAINTENANCE PRECAUTIONS FOR KDPF When performing inspection and maintenance during or just after regeneration, take care of the high tempera- ture parts. Even after the engine stops the parts around KDPF may be at high temperature. PRECAUTIONS FOR SCR ASSEMBLY Be careful for the high temperature parts when performing inspection and maintenance.
Page 384 PRECAUTIONS FOR MAINTENANCE MAINTENANCE Checks while the engine is running For checks while the engine is running, see SAFETY, “PRECAUTIONS BEFORE YOU START INSPECTION AND MAINTENANCE (2-44)”, “PRECUATIONS FOR MAINTENANCE WHEN ENGINE IS IN OPERATION”. Do these checks very carefully for safety. •...
Page 385: Handle Anchor Point For Tie-Off
MAINTENANCE HANDLE ANCHOR POINT FOR TIE-OFF HANDLE ANCHOR POINT FOR TIE-OFF G0126367 You can install the personal fall-arrest equipment to the anchor point for tie-off (1). Use it when you do the work on the step (2) and on the position higher than that as a foothold. Do not set other ones than the hook of the personal fall-arrest equipment to the anchor point for tie-off.
Page 386: Maintenance Information
• Replace the related filters at the same time when oil is changed. • Komatsu recommends you to check the condition of the machine regularly with KOWA (Komatsu Oil Wear Analysis). For KOWA, consult your Komatsu distributor. • The use of oil other than Komatsu genuine oil can reduce the replacement interval. Komatsu recommends you to check the condition of the machine with KOWA (Komatsu Oil Wear Analysis).
Page 387 MAINTENANCE MAINTENANCE INFORMATION FUEL • To prevent entry of water into the fuel, fill the fuel tank with fuel after work. This prevents condensation of water contained in the air in the fuel tank. • If the fuel which contains water or dust is used, it can be a cause of malfunction of the fuel pump. •...
Page 388 • The fuel can possibly leak because of the deterioration of rubber material of the fuel hose. Replace it with the fuel hose applicable for biofuel. Consult your Komatsu distributor for replace- ment of the fuel hose. •...
Page 389 2 years or 4000 hours. Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use the coolant that is not recommended, it can cause dangerous failure such as the corrosion of the cooling system or engine.
Page 390 The construction machinery is used in heavy-duty conditions. Be sure to obey the recommended ambient temperatures and replacement intervals as in the Operation and Maintenance Manual. Also, Komatsu recommends the use of grease written in the Operation and Maintenance Manual. •...
Page 391 Mix the oil sufficiently, and then collect the oil. • Collect the oil at the specified intervals continuously. • Do not collect the oil on rainy or windy days to prevent entry of water or dirt. For details about KOWA, consult your Komatsu distributor. 4-11 WENAM00550_1...
Page 392: Oil And Fuel Storage
Replace all the filters regularly. For details, see Operation and Maintenance Manual. But if the operation environment is dangerous or if you use oil that is different from genuine Komatsu prod- ucts or fuel contains high ratio of sulphur, reduce the replacement interval.
Page 393 Install the electrical components specified by Komatsu. • When you install the wireless devices to the machine, consult your Komatsu distributor first. There is a dan- ger that the radio waves received and transmitted by wireless devices causes malfunction in the controller of the control system.
Page 394: Standard Torque
Unless otherwise specified, tighten the metric nuts and bolts to the torque shown in the table. When you replace the bolts or nuts, Komatsu recommends the use of Komatsu genuine part of the same size as before re- placement. Outside diameter...
Page 395 MAINTENANCE MAINTENANCE INFORMATION Torque list for hoses Tighten the hoses to the torque shown in the table. Face seal Tightening torque (Nm {kgfm}) Width Hose nomi- across flats Target val- nal number Allowable range “b” (mm) 44 {4.5} 34 to 54 {3.5 to 5.5} 74 {7.5} 54 to 93 {5.5 to 9.5} 103 {10.5}...
Page 396: Maintenance Schedule
250 hours. For details, see the oil part number and note in “RECOMMENDED FUEL, COOLANT, AND LUBRICANT (7-4)”. • Consult your Komatsu distributor to change the maintenance interval of the machine monitor. MAINTENANCE INTERVAL TABLE WHEN REQUIRED ............................4-19 CHECK, CLEAN AND REPLACE AIR CLEANER ...................
Page 397 MAINTENANCE MAINTENANCE SCHEDULE CHECK FAN BELT TENSION AND AUTO-TENSIONER, REPLACING AUTO-TENSIONER ....4-80 REPLACE DEF TANK BREATHER ELEMENT ..................4-81 CHECK FUNCTION OF ACCUMULATOR FOR CONTROL CIRCUIT AND RELEASE INTERNAL PRES- SURE IN HYDRAULIC CIRCUIT (FOR BREAKER) ................4-81 EVERY 2000 HOURS MAINTENANCE ......................4-82 CLEAN HYDRAULIC TANK STRAINER ....................
Page 398: Maintenance Interval For Hydraulic Breaker
MAINTENANCE SCHEDULE MAINTENANCE MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER If a hydraulic breaker is installed to the machine, the hydraulic oil deteriorates faster than in the normal bucket digging operation. Set the maintenance interval as shown below in response to the operation ratio of the break- Replace hydraulic oil filter element For the first time of a new machine, replace the element after 100 to 150 hours.
Page 399: Maintenance Procedure
MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE WHEN REQUIRED CHECK, CLEAN AND REPLACE AIR CLEANER WARNING When you use the compressed air, use the protective equipment such as protective eyeglasses and dust mask. There is a danger of personal injury when dirt is scattered. NOTICE •...
Page 400 MAINTENANCE PROCEDURE MAINTENANCE Hold the outer element (5), rock it lightly up and down and to the right and left, and pull it out while turning it to the right or left. When outer element (5) is removed, check that the inner element does not come out of position and is not at an an- gle.
Page 401 MAINTENANCE MAINTENANCE PROCEDURE 11. After cleaning, illuminate the inside of the element with an electric bulb to check. If any holes or thin places are found, replace the inner and outer elements. 12. Remove the cover of cloth or tape attached to inner ele- ment (6).
Page 402: Replace Air Cleaner Element
MAINTENANCE PROCEDURE MAINTENANCE Lock the tip of hook (2) on the protrusion of the air cleaner body. Always install the cover (3) so that vacuator (4) faces right below (A). When cover (3) is installed, check that the clearance between the air cleaner body and cover (3) is not too large.
Page 403 MAINTENANCE MAINTENANCE PROCEDURE Do not remove inner element (6) at this time. When outer element (5) is removed, check that the inner element does not come out of position and is not at an an- gle. If the inner element is inclined, push it in straight by hand to the end.
Page 404 MAINTENANCE PROCEDURE MAINTENANCE Replace the seal (9) on the cover (3) with a new one. CHECK AND REPLACE VACUATOR VALVE Check vacuator valve (4) for damage and deformation of its rubber portion. If the vacuator is damaged or its rubber part is deformed, replace it with a new one. 4-24 WENAM00550_1...
Page 405: Clean Inside Of Cooling System
2 years or 4000 hours. Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use the coolant that is not recommended, it can cause dangerous failure such as the corrosion of the cooling system or engine.
Page 406 MAINTENANCE PROCEDURE MAINTENANCE CLEAN INSIDE OF COOLING SYSTEM Prepare a container with the capacity larger than the specified coolant quantity to catch the drained coolant. Prepare a hose to use when filling with coolant and water. Stop the engine. Remove the 4 cover mounting bolts (2), and remove the undercover (1).
Page 407 MAINTENANCE MAINTENANCE PROCEDURE Put containers to receive coolant below the drain hose in- stalled to the drain valve (6) and below the coolant drain plug (7) of the engine cylinder block. Open the drain valve (6) at the lower part of the radiator. Remove the drain plug (7) of the cylinder block, and drain coolant.
Page 408 MAINTENANCE PROCEDURE MAINTENANCE 16. Operate the work equipment control levers as follows. NOTICE When you operate the work equipment, be careful not to let it interfere with the machine or ground. Move the R.H. work equipment control lever slowly in the direction of the bucket IN position (D).
Page 409 MAINTENANCE MAINTENANCE PROCEDURE 25. Drain coolant from the reservoir tank (8). 26. Clean the inside of reservoir tank. 27. Add Non-Amine Engine Coolant to the middle between FULL and LOW. 28. Stop the engine. 29. Add Non-Amine Engine Coolant (AF-NAC) up to the filler port after approximately 3 minutes.
Page 410: Check Looseness Of Track Shoe Bolts, Retighten Bolts
MAINTENANCE PROCEDURE MAINTENANCE CHECK LOOSENESS OF TRACK SHOE BOLTS, RETIGHTEN BOLTS (Steel shoe specification) NOTICE Tighten the track shoe bolt immediately if it is loose. If it is used as it is loose, shoe bolt will be broken. Check the track shoe bolts (1) for looseness. If a loose bolt is found, tighten it in the sequence shown in the figure.
Page 411: Check And Adjust Track Tension
(S) from the idler support to the track frame becomes 0mm. If the tension remains loose, pins and bushings have been worn out. Consult your Komatsu distributor for turn the pins and bushing or replace them. To check that the tension is correct, move the machine for- ward slowly for a distance equal to the length of the track on ground with the engine at low idle.
Page 412: Check Roadliners
If the lug height (a) is reduced by wear, the drawbar pull will de- crease. If the lug height (a) is 5mm or less, ask your Komatsu distributor to make a determination regarding the roadlin- er, such as replacement, repair, or continued use.
Page 413 MAINTENANCE MAINTENANCE PROCEDURE WARNING • Before you replace the tooth, set the machine to the state that follows. If the machine starts moving by mistake, it is dangerous. • The machine is kept in stable condition. • The engine is stopped. •...
Page 414 MAINTENANCE PROCEDURE MAINTENANCE • Lock pin (2) is too short. When dimension (B) is 1/3 or more of dimension (A) when the end surface of the lock pin (2) is aligned with the bottom face (C) • Steel ball is about to come off. The rubber (6) of the rubber pin lock (3) is deteriorated or damaged.
Page 415 MAINTENANCE MAINTENANCE PROCEDURE • If the back of the pin hole on the tooth (1) protrudes from the back of the pin hole on the adapter (4), re- move the deposit (D) which prevents a full connection of the tooth (1) and adapter (4). Insert the lock pin (2) in the pin hole in the tooth (1), and hit it in until the top surface of the lock pin (2) becomes the same height as the surface of the tooth (1).
Page 416: Replace Bucket Teeth (Horizontal Pin Type)
MAINTENANCE PROCEDURE MAINTENANCE REPLACE BUCKET TEETH (HORIZONTAL PIN TYPE) Replace the tooth before it is worn to the end surface of the adapter. WARNING • Before you replace the tooth, set the machine to the state that follows. If the machine starts moving by mistake, it is dangerous.
Page 417: Adjust Bucket Clearance
MAINTENANCE MAINTENANCE PROCEDURE Clean the mounting face and fit new tooth (2) to the adapt- Insert the pin (1) to the half way. Punch in the pin (1) with a hammer to install the tooth (2) to the bucket. ADJUST BUCKET CLEARANCE WARNING Before you adjust the bucket clearance, let the machine be in the state that follows.
Page 418 MAINTENANCE PROCEDURE MAINTENANCE Shift the O-ring (1) of connecting portion and measure the amount of play (a). REMARK Measurement is easier if you move the bucket to one side so that all the play can be measured at 1 place (the right side in the figure).
Page 419: Check And Add Window Washer Fluid
MAINTENANCE MAINTENANCE PROCEDURE CHECK AND ADD WINDOW WASHER FLUID If air is mixed in window washer fluid, check the fluid level in the window washer tank (1). Check the fluid level in the window washer tank (1). If it is not sufficient, add window washer fluid for automo- bile.
Page 420: Check And Maintenance Air Conditioner
MAINTENANCE PROCEDURE MAINTENANCE CHECK AND MAINTENANCE AIR CONDITIONER Check and maintenance items Some maintenance items of the air conditioner are to be done regularly and the others are to be done when required. Do the inspection and maintenance as in the table that follows. Check and mainte- Content of check and maintenance Guideline for maintenance interval...
Page 421 (C) Colorless, transparent: No refrigerant REMARK If bubbles are found, the refrigerant gas is not sufficient. Consult your Komatsu distributor to add the refrigerant gas. If the air conditioner is operated with low refrigerant level, it can cause damage to the compressor.
Page 422: Check, Clean And Lubricate Slide Door Rail And Roller
Spray the spray type lubrication oil sufficiently to the rail (1) and the roller (2). After lubrication, slide the door to check that you can smoothly open and close the door. If you cannot smoothly open and close the door, consult your Komatsu distributor. 4-42...
Page 423: Check, Clean And Lubricate Slide Door Stopper
(3) and (4). Consult your Komatsu distributor. If the stoppers are worn, consult your Komatsu distributor. CHECK CLEARANCE AT STOPPER WHEN YOU PULL UP FRONT WINDOW WARNING •...
Page 424: Replace Additional Filter Element For Breaker
MAINTENANCE PROCEDURE MAINTENANCE REPLACE ADDITIONAL FILTER ELEMENT FOR BREAKER WARNING • Wait for the temperature of the machine to go down, and then start the work. Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. •...
Page 425: Clean Washable Floor
MAINTENANCE MAINTENANCE PROCEDURE CLEAN WASHABLE FLOOR On the washable cab floor, you can flush out the dirt directly with water. WARNING • Do the work on a firm and level area. • Put strong blocks below the undercarriage to tilt the machine, and be very careful when you do the operation.
Page 426 MAINTENANCE PROCEDURE MAINTENANCE TILT MACHINE You can set the machine at an angle by using a slope or blocks. Consider the condition of the machine and select the safe method. USE SLOPE WARNING Select a solid and smooth slope. Always block the tracks from movement, and thrust the work equipment into the ground. Stop the machine with the work equipment on the downhill side on a slope.
Page 427: Check Gas Spring
Do not hit it or roll it, or give shocks to it. • When you dispose of it, the gas must be released. Consult your Komatsu distributor. The gas springs are located in the left console (1 place) and at the ceiling window of cab (1 place each on right and left).
Page 428: Bleed Air From Hydraulic Circuit
MAINTENANCE PROCEDURE MAINTENANCE BLEED AIR FROM HYDRAULIC CIRCUIT BLEED AIR FROM PUMP NOTICE Be sure to bleed air. If you do the operation when air bleed of the pump is not done, the pump can over- heat abnormally, which causes damage to the pump in a short period. Bleed air when you replace the hydraulic component or replace oil.
Page 429 MAINTENANCE MAINTENANCE PROCEDURE Run the engine at low idle. Remove the cover (2). Loosen the hose at motor S port (3), and check that oil oo- zes out from the fitting of the motor S port (3). NOTICE Do not do the swing operation at this time. If oil does not ooze out, stop the engine, remove the motor S port (3), and fill the motor case with hydraulic oil.
Page 430: Check Camera Visibility
(B) is approximately 1m outside of it. If the traffic cone can be seen on the monitor screen, it is nor- mal. If the traffic cone cannot be seen on the monitor screen, ask your Komatsu distributor for adjustment of the cam- era image. 4-50...
Page 431: Check Before You Start Operation
MAINTENANCE MAINTENANCE PROCEDURE CHECK BEFORE YOU START OPERATION For the items that follow, see OPERATION, “CHECK BEFORE STARTING (3-153)”. • Drain water and sediment from fuel tank • Check water separator, drain water and sediment • Check oil level in hydraulic tank, add oil •...
Page 432: Every 100 Hours Maintenance
MAINTENANCE PROCEDURE MAINTENANCE EVERY 100 HOURS MAINTENANCE LUBRICATE WORK EQUIPMENT NOTICE • If unusual noise comes out of greasing point, do the greasing regardless of the greasing interval. • On a new machine, add grease every 10 hours for the first 50 hours of operation. •...
Page 433: Check Oil Level In Swing Machinery Case, Add Oil
MAINTENANCE MAINTENANCE PROCEDURE CHECK OIL LEVEL IN SWING MACHINERY CASE, ADD OIL WARNING Wait for the temperature of the machine to go down, and then start the work. Immediately after the en- gine is stopped, the parts and oil are very hot and they can cause burn injury. Prepare a container to collect oil.
Page 434: Every 250 Hours Maintenance
MAINTENANCE PROCEDURE MAINTENANCE EVERY 250 HOURS MAINTENANCE CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL WARNING • Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn in- jury. Wait for the temperature to go down, and then start the work. •...
Page 435: Check Oil In Large Capacity Final Drive Case
MAINTENANCE MAINTENANCE PROCEDURE CHECK OIL IN LARGE CAPACITY FINAL DRIVE CASE (if equipped) WARNING • Wait for the temperature of the machine to go down, and then start the work. Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. •...
Page 436: Check Battery Electrolyte Level
MAINTENANCE PROCEDURE MAINTENANCE CHECK BATTERY ELECTROLYTE LEVEL WARNING • Do not use the battery if the battery electrolyte level is below the LOWER LEVEL line. If you do so, it will deteriorate the inner side of battery and the service life of the battery can be decreased. In addi- tion, it can cause an explosion.
Page 437 Put the rubber cover (1) back to the original position. If you suck the battery electrolyte with the procedure of 5, neutralize the battery electrolyte with a chemical such as sodium bicarbonate, then rinse with plenty of water. If necessary, consult your Komatsu distributor or a bat- tery manufacturer.
Page 438 Put the rubber cover (1) back to the original position. If you suck the battery electrolyte with the procedure of 5, neutralize the battery electrolyte with a chemical such as sodium bicarbonate, then rinse with plenty of water. If necessary, consult your Komatsu distributor or a bat- tery manufacturer.
Page 439: Check And Adjust Air Conditioner Compressor Belt Tension
MAINTENANCE MAINTENANCE PROCEDURE CHECK AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION The followings are the periodic maintenance items for the air conditioner. Perform inspection and maintenance to use the air conditioner effectively. CHECK AIR CONDITIONER COMPRESSOR BELT Open the engine hood. Lock the engine hood securely with the hood support lever (1).
Page 440 MAINTENANCE PROCEDURE MAINTENANCE Loosen nut (2) in direction (A). Nut (2) is provided to prevent loosening of jack bolt (3). Tighten the jack bolt (3). Compressor (4) moves in direction (A), and the compres- sor belt is tensed. Press the center between drive pulley (A) and compressor pulley (B) with a finger (approximately 60N {6.12kgf}).
Page 441: Every 500 Hours Maintenance
MAINTENANCE MAINTENANCE PROCEDURE EVERY 500 HOURS MAINTENANCE Maintenance for every 100 hours and 250 hours must be done at the same time. LUBRICATION NOTICE • If unusual noise comes out of lubrication point, do lubrication regardless of the lubrication interval. •...
Page 442: Change Oil In Engine Oil Pan And Engine Oil Filter Cartridge
MAINTENANCE PROCEDURE MAINTENANCE (8) Arm-Link connection pin (1 place) (9) Link connection pin (1 places) (10) Bucket cylinder rod end (1 place) (11) Bucket and Link connection pin (2 places) (12) Blade connection pin (2 places) (13) Blade cylinder foot pin (2 places) (14) Blade cylinder rod end pin (2 places) After greasing, wipe off any old grease that is pushed out.
Page 443 MAINTENANCE MAINTENANCE PROCEDURE Remove the undercover (1) at the bottom of the machine. Place the oil container to receive the oil under drain plug (P). Loosen drain plug (P) to drain oil. Do it slowly so that you do not get splashed with drained oil. Tighten the drain plug (P).
Page 444: Replace Fuel Prefilter Cartridge
NOTICE • When you replace the fuel filter cartridge, it is recommended to use Komatsu genuine parts. Komat- su genuine fuel filter cartridges use a special filter that has high filtration efficiency. The common rail fuel injection system used on this machine consists of more accurate parts than those in the conventional injection pump and nozzles.
Page 445 MAINTENANCE MAINTENANCE PROCEDURE Fill the new filter cartridge with clean fuel, thinly apply oil to the packing surface, then install it to the filter head. NOTICE • When filling the filter cartridge with fuel, do not re- move cap (B). Always fill with fuel from 8 small holes (A) on the dirty side.
Page 446: Check Swing Pinion Grease Level, Add Grease
Make sure that grease is not milky white. All capacity of grease: 10ℓ If grease is milky white, it needs to be replaced. Consult your Komatsu distributor for replacement. Install the cover (4) with the bolt (3). G0126379 Install the cover (2) with the bolt (1).
Page 447: Lubricate Swing Circle
MAINTENANCE MAINTENANCE PROCEDURE LUBRICATE SWING CIRCLE Prepare the grease pump. Set the machine to the lubrication posture as shown in the figure, and lower the work equipment to the ground, and then stop the engine. Use a grease pump to lubricate through the grease fittings (2 places) shown by arrow.
Page 448: Check And Clean Fins
MAINTENANCE PROCEDURE MAINTENANCE CHECK AND CLEAN FINS WARNING Wear the protective equipment such as protective eyeglasses and dust mask. If the compressed air, high-pressure water, or steam hits your body directly or dirt is scattered by use of it, there is a danger of personal injury.
Page 449 MAINTENANCE MAINTENANCE PROCEDURE After inspecting and cleaning, install nets (2) and (3) as they were. 4-69 WENAM00550_1...
Page 450: Clean Air Conditioner Fresh/Recirc Filters
MAINTENANCE PROCEDURE MAINTENANCE CLEAN AIR CONDITIONER FRESH/RECIRC FILTERS WARNING • When you use the compressed air, use the protective equipment such as protective eyeglasses and dust mask. There is a danger of personal injury when dirt is scattered. • Before you do the cleaning of fresh/recirc air filters, be sure to check that the slide door is locked regardless of whether it is open or closed.
Page 451 MAINTENANCE MAINTENANCE PROCEDURE CLEAN AIR CONDITIONER FRESH AIR FILTER Open the cover (1) on the rear left of the operator's cab. Fix it securely with the cover support lever (3). Remove the filter (2). Clean the filter (2) with compressed air. •...
Page 452: Every 1000 Hours Maintenance
MAINTENANCE PROCEDURE MAINTENANCE EVERY 1000 HOURS MAINTENANCE Maintenance for every 100 hours, 250 hours, and 500 hours must be done at the same time. REPLACE HYDRAULIC OIL FILTER ELEMENT WARNING Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. Wait for the temperature to go down, and then start the work.
Page 453 MAINTENANCE MAINTENANCE PROCEDURE Loosen the 3 bolts (3), and remove the cover (4). The cover (4) possibly jumps out by the force of spring (5), so hold the cover (4) down when you remove the bolts. After you remove the spring (5) and valve (6), remove the element (7).
Page 454: Replace Hydraulic Tank Breather Element
MAINTENANCE PROCEDURE MAINTENANCE REPLACE HYDRAULIC TANK BREATHER ELEMENT WARNING • Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn in- jury. Wait for the temperature to go down, and then start the work. •...
Page 455: Change Oil In Swing Machinery Case
MAINTENANCE MAINTENANCE PROCEDURE CHANGE OIL IN SWING MACHINERY CASE WARNING Wait for the temperature of the machine to go down, and then start the work. Immediately after the en- gine is stopped, the parts and oil are very hot and they can cause burn injury. Refill capacity: 2.5ℓ...
Page 456: Change Oil In Final Drive Case
MAINTENANCE PROCEDURE MAINTENANCE CHANGE OIL IN FINAL DRIVE CASE WARNING • Wait for the temperature of the machine to go down, and then start the work. Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. •...
Page 457: Change Oil In Large Capacity Final Drive Case
MAINTENANCE MAINTENANCE PROCEDURE CHANGE OIL IN LARGE CAPACITY FINAL DRIVE CASE (if equipped) WARNING • Wait for the temperature of the machine to go down, and then start the work. Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn injury. •...
Page 458: Check Oil Level In Pto Gear Case, Add Oil
MAINTENANCE PROCEDURE MAINTENANCE CHECK OIL LEVEL IN PTO GEAR CASE, ADD OIL WARNING Immediately after the engine is stopped, its parts and oil are very hot, and can cause burn injury. Wait for the temperature to go down, and then start the work. Items to be prepared •...
Page 459: Replace Fuel Main Filter Cartridge
The common rail fuel injection system used on this machine consists of more precise parts than those in the conventional injection pump and nozzles. If any cartridge other than a Komatsu genu- ine filter cartridge is used, dust or dirt may get in and cause problems with the injection system.
Page 460: Check All Tightening Points Of Engine Intake Pipe Clamps
5 to 10 to install CHECK ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE CLAMPS Consult your Komatsu distributor for the check of each clamp between the air cleaner and turbocharger, be- tween the turbocharger and aftercooler, and between the aftercooler and engine.
Page 461: Replace Def Tank Breather Element
Close the machine right front cover. CHECK FUNCTION OF ACCUMULATOR FOR CONTROL CIRCUIT AND RELEASE INTERNAL PRESSURE IN HYDRAULIC CIRCUIT (FOR BREAKER) A special tool is needed for checking and charging of nitrogen gas. Ask your Komatsu distributor to perform this work. 4-81...
Page 462: Every 2000 Hours Maintenance
MAINTENANCE PROCEDURE MAINTENANCE EVERY 2000 HOURS MAINTENANCE Maintenance for every 100 hours, 250 hours, 500 hours, and 1000 hours must be done at the same time. CLEAN HYDRAULIC TANK STRAINER WARNING • Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn in- jury.
Page 463: Check Function Of Accumulator For Control Circuit And Release Internal Pressure In Hydraulic Circuit
Do not hit it or roll it, or give shocks to it. • When you dispose of it, consult your Komatsu distributor. NOTICE If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it is not possible to release the remaining pressure in the hydraulic circuit if a failure occurs on the machine.
Page 464 MAINTENANCE PROCEDURE MAINTENANCE CHECK NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR CAUTION Check that there is no person or obstacles in the area around the machine before you start the work. Replace the accumulator every 2 years or every 4000 hours that comes first. Check the charged pressure of the nitrogen gas as follows.
Page 465 Con- sult your Komatsu distributor for inspection. After completion of the inspection, set the lock lever to the LOCK position and turn the starting switch to the OFF position.
Page 466: Check Alternator And Starting Motor
Turn the starting switch to the OFF position (A). CHECK ALTERNATOR AND STARTING MOTOR The brush can be worn or the grease cannot be sufficient on the bearing. Consult your Komatsu distributor for the inspection and repair. If you start the engine frequently, consult for inspection every 1000 hours.
Page 467: Replace Kccv Filter Element
MAINTENANCE MAINTENANCE PROCEDURE REPLACE KCCV FILTER ELEMENT WARNING After the engine has been operated, all of parts are still very hot. Do not replace the filter element imme- diately. Wait until all of parts cool down before starting the work. NOTICE •...
Page 468 MAINTENANCE PROCEDURE MAINTENANCE By using tools, loosen bolt (3) and nut (4) of elbow (2) above KCCV ventilator (1). Move loosened bolt (3) and nut (4) along the groove of el- bow (2) to position (A) shown in the figure. By using the filter wrench, loosen cover (7) of KCCV venti- lator (1).
Page 469 MAINTENANCE MAINTENANCE PROCEDURE After removing cover (7) from ventilator body (8), remove element (9). Oil may be accumulated in or sticking to cover (7) and ele- ment (9). When replacing the element, take care that the oil will not spill out. REMARK When the ambient temperature is low, water or emulsified matter may stick to the inside of KCCV because of con-...
Page 470: Replace Def Filter
Komatsu recommends using Komatsu genuine parts for replacement parts. • If the machine is operated without the DEF filter attached, or with the filter other than Komatsu gen- uine parts, foreign materials may enter the DEF pump and DEF injector which will cause failure of the machine.
Page 471 MAINTENANCE MAINTENANCE PROCEDURE Remove the filter cap (1) at the bottom of the DEF pump, and remove equalizing element (2). Turn the cap (4) of filter removal tool (3) and remove it. Check the installation of spacer (5). Insert the filter removal tool (3) into the bottom of the DEF pump and thrust in with hand.
Page 472 MAINTENANCE PROCEDURE MAINTENANCE Slide the filter (6) down, and remove spacer (5) from filter removal tool (3). Pull the filter (6) up while pushing in the tip of filter removal tool (3), and remove it. Return the removed spacer (5) to filter removal tool (3), and keep them.
Page 473: Every 4000 Hours Maintenance
Maintenance for every 100 hours, 250 hours, 500 hours, 1000 hours, and 2000 hours must be done at the same time. CHECK WATER PUMP Do the inspection for play of pulley, leakage of oil, leakage of water and clogging of drain hole. If you found an abnormality, consult your Komatsu distributor for disassembly and repair or replacement. 4-93 WENAM00550_1...
Page 474: Replace Accumulator (For Control Circuit)
If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it is not possible to release the remaining pressure in the hydraulic circuit if a failure occurs on the machine. Replace the accumulator every 2 years or every 4000 hours that comes first. Consult your Komatsu distributor for replacement.
Page 475: Check For Missing Fuel Spray Prevention Cap, Hardening Of Rubber
MAINTENANCE MAINTENANCE PROCEDURE If there are any problems, the replacement must be performed. Ask your Komatsu distributor for replacement. CHECK FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUB- The fuel spray prevention caps (10 places) on the fuel injection piping and both ends of the high-pressure piping act to prevent the fuel from coming into contact with high-temperature parts of the engine and causing a fire if the fuel should leak or spray out.
Page 476: Every 4500 Hours Maintenance
REPLACE DEF TANK FILLER PORT FILTER CAUTION If DEF spurts back because of clogging of filter when DEF is added, replace the filter even before 4500 hours. Ask your Komatsu distributor for replacement of the DEF tank filler port filter. 4-96 WENAM00550_1...
Page 477: Every 5000 Hours Maintenance
MAINTENANCE MAINTENANCE PROCEDURE EVERY 5000 HOURS MAINTENANCE Maintenance for every 100 hours, 250 hours, 500 hours, and 1000 hours must be done at the same time. CHANGE OIL IN HYDRAULIC TANK WARNING • Immediately after the engine is stopped, the parts and oil are very hot and they can cause burn in- jury.
Page 478 MAINTENANCE PROCEDURE MAINTENANCE Remove the cap of the oil filler port (F). G0126354 Remove the undercover (3). Put a container to receive oil below the drain plug (P1) at the bottom of the machine. Remove the drain plug (P1) to drain oil. •...
Page 479 MAINTENANCE MAINTENANCE PROCEDURE 15. Make sure that the oil level is between the lines H and L on the sight gauge (G). For the applicable oil, see “USE FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERA- TURE (7-8)”. For the oil level check procedure and procedure to remove the oil filler cap, see “CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL (3-155)”.
Page 480: Every 8000 Hours Maintenance
REPLACE ENGINE HIGH-PRESSURE PIPING CLAMP Special techniques and tools are required for this work. Ask your Komatsu distributor for replacement of the engine high-pressure piping. REPLACE FUEL SPRAY PREVENTION CAP Ask your Komatsu distributor for replacement of the fuel spray prevention caps. 4-100 WENAM00550_1...
Page 481: Every 9000 Hours Maintenance
MAINTENANCE MAINTENANCE PROCEDURE EVERY 9000 HOURS MAINTENANCE Maintenance for every 100, 250, 500, 1000 and 4500 hours service should be performed at the same time. REPLACE DEF HOSE Ask your Komatsu distributor for replacement of the DEF hose. 4-101 WENAM00550_1...
Page 482: End Of Service Life
END OF SERVICE LIFE MAINTENANCE END OF SERVICE LIFE • For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor. 4-102 WENAM00550_1...
Page 483: Specifications
SPECIFICATIONS WENAM00550_1...
Page 484: Specifications: Pc138Us-11E0
SPECIFICATIONS: PC138US-11E0 SPECIFICATIONS SPECIFICATIONS: PC138US-11E0 Item Unit PC138US-11E0 Machine weight 14000 Bucket capacity 0.50 Engine model Komatsu SAA4D95LE-7 diesel engine SAE J1995 (gross) 72.6/2050 kW {HP}/min Rated horsepower ISO 9249/SAE {rpm} 72.5/2050 J1349 (net) Overall length (standard specification) 7260 A' Overall length (blade specification)
Page 485 SPECIFICATIONS SPECIFICATIONS: PC138US-11E0 Working range drawing Working ranges Unit PC138US-11E0 A Max. digging reach 8300 B Max. digging depth 5480 C Max. digging height 9340 D Max. vertical wall digging depth 4900 E Max. dumping height 6840 Min. swing radius of work...
Page 486: Explanation Of Lift Capacity Chart
EXPLANATION OF LIFT CAPACITY CHART SPECIFICATIONS EXPLANATION OF LIFT CAPACITY CHART WARNING The excavator used in handling operations must conform with current local regulations and be equip- ped with safety valves and an overload alarm in compliance with EN 474-5. Legend A: Reach from swing centre B: Bucket hook height...
Page 487 SPECIFICATIONS EXPLANATION OF LIFT CAPACITY CHART Loads do not exceed 87% of hydraulic capacity or 75% of tipping capacity (* load limited by hydraulic capacity rather than tipping). RKA55300 Overload diagram PC138US−11 6.0m 4.5m 3.0m 4.5m 1300 1480 3.0m 1400 1790 2620 1.5m...
Page 488 WENAM00550_1...
Page 489: Attachments And Options
ATTACHMENTS AND OP- TIONS Before you read ATTACHMENTS AND OPTIONS, read and understand SAFE- WENAM00550_1...
Page 490: Precautions To Use Attachments And Options Safely
Caution when you select When you install attachments and optional equipment, you need to take into consideration the following. Before that, consult your Komatsu distributor. • By the type of the attachments or options, it can be necessary to install a front guard, overhead guard, or other safety structure to the machine.
Page 491 Be sure to stay in an area that is safe even if the load falls off. NOTICE Qualifications are required to operate a crane. Only a qualified operator can operate. For details about the removal and installation operations, consult your Komatsu distributor. WENAM00550_1...
Page 492 • To select the boom or arm, consult your Komatsu dis- tributor. If you do not follow the correct work proce- dure, it can cause serious damage.
Page 493: Handle Bucket With Hook
HANDLE BUCKET WITH HOOK When you use the bucket with hook, check that there is no damage to the hook, stopper, or hook mounting part. If a problem is found, consult your Komatsu distributor. WORK PRECAUTIONS PRECAUTIONS FOR LIFTING OPERATIONS •...
Page 494: Handle 2-Piece Boom
HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM 2-PIECE BOOM COMPONENTS (1) Arm (4) First boom raise cylinder (2) Second boom (5) First boom (3) Second boom adjust cylinder WENAM00550_1...
Page 495: 2-Piece Boom Control Pedal
ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM 2-PIECE BOOM CONTROL PEDAL The 2-piece boom control pedal is situated at the left of travel levers. G0126288 It controls the extension and folding of the 2-piece boom ac- cording to the movements indicated. (a): Boom folding (b): Boom extension N(Neutral): boom at rest.
Page 496: Preparation For Storage And Lifting Machine
HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS PREPARATION FOR STORAGE AND LIFTING MACHINE Preparation for storage machine When leaving the operator's cab, set the machine in the following posture for safety reason. When leaving the machine for a long time. G0126290 When leaving the machine for a short time.
Page 497: Maintenance Schedule
ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM MAINTENANCE SCHEDULE EVERY 100 HOURS MAINTENANCE LUBRICATION NOTICE • If any abnormal noise is generated from any greasing point, carry out greasing regardless of the greasing interval. • Carry out greasing every 10 hours for the first 50 hours on a new machine. •...
Page 498 HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS (1) Arm-Bucket coupling pin (1 point) 6-10 WENAM00550_1...
Page 499: Every 500 Hours Maintenance
ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM EVERY 500 HOURS MAINTENANCE LUBRICATION NOTICE • If any unusual noise is generated from any greasing point, perform greasing regardless of the greasing interval. • Perform greasing every 10 hours for the first 50 hours operation on a new machine. •...
Page 500 HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS (8) 2-piece boom cylinder rod end pin (1 place) G0126325 (9) Boom and arm connection pin (1 place) (10) Arm cylinder rod end pin (1 place) (11) Bucket cylinder foot pin (1 place) G0126326 (12) Arm-link connection pin (1 place) G0126327 (13) Link connection pin (1 place)
Page 501: Specifications
ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM SPECIFICATIONS Item Unit 2500mm arm specification Overall length 8100 Overall height 3150 G0126331 6-13 WENAM00550_1...
Page 502 HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS Working ranges (mm) Unit 2500mm arm specification Max. digging height 9130 Max. dumping height 6750 Max. digging dept 5680 Max. vertical wall digging depth 4440 Max. digging depth of cut for 2440mm level 5570 Max.
Page 503: Explanation Of Lift Capacity Chart
ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM EXPLANATION OF LIFT CAPACITY CHART WARNING The excavator used in handling operations must conform with current local regulations and be equip- ped with safety valves and an overload alarm in compliance with EN 474-5. Legend A: Reach from swing centre B: Bucket hook height...
Page 504 HANDLE 2-PIECE BOOM ATTACHMENTS AND OPTIONS Loads do not exceed 87% of hydraulic capacity or 75% of tipping capacity (* load limited by hydraulic capacity rather than tipping). G0133547 6-16 WENAM00550_1...
Page 505 ATTACHMENTS AND OPTIONS HANDLE 2-PIECE BOOM Overload diagram PC138US−11 6.0m 4.5m 3.0m 4.5m 1251 1090 3.0m 1180 1535 2350 1.5m 1305 1875 3110 0.0m 1370 2040 3420 22B−00−R1631 G0084546 6-17 WENAM00550_1...
Page 506: Super Long Front Boom And Arm
Check daily for any oil leakage. • Check all parts of the work equipment for any cracks, bending, buckling and play of the boom and arm. If any abnormality is found, contact your Komatsu distributor immediately. Locations for checking are shown below. 6-18...
Page 507: Working Modes
ATTACHMENTS AND OPTIONS SUPER LONG FRONT BOOM AND ARM Boom Bucket Bucket link WORKING MODES The table gives an indication of the type of work and method of use recommended. Please follow these recom- mendations. Type of work R - Recommended work C - Work requiring caution N - Work that is not permitted Applicable operations...
Page 508: Method Of Work
Do not use any bucket with a capacity greater than shown in this table. Buckets which do not conform to this table must not be used. Item Unit PC138US-11E0 Max digging radius 12320 Bucket, material density 1.8 t/m Capacity (new JIS) •...
Page 509: When Travelling
ATTACHMENTS AND OPTIONS SUPER LONG FRONT BOOM AND ARM WHEN TRAVELLING • Lower the boom, pull in the arm, keep the work equipment parallel to the track and travel slowly. • Never mount obstacles when travelling on rough ground. This may cause the machine to become unstable and overturn.
Page 510 SUPER LONG FRONT BOOM AND ARM ATTACHMENTS AND OPTIONS Lubrication RKA64690 Set the work equipment in the greasing posture below, then lower the work equipment to the ground and stop the engine. Using the grease pump, pump in grease through the grease fittings shown by arrows. After greasing, wipe off any old grease that was pushed out.
Page 511: Specifications
(9) Fulcrum link pin (2 points) (10) Bucket cylinder rod end pin (1 point) RKA49460 (11) Fulcrum link/bucket pin (2 point) RKA49470 SPECIFICATIONS Item Unit PC138US-11E0 Operating mass 15000 Track width A Total lenght 9580 B Total width 2810 6-23...
Page 512 SUPER LONG FRONT BOOM AND ARM ATTACHMENTS AND OPTIONS RKA49431 Working ranges Unit PC138US-11E0 A Maximum digging reach 12320 B Maximum digging height 11610 C Maximum dumping height 9560 D Maximum digging depth 9190 E Digging distance with inclination of 35°...
Page 513: Explanation Of Lift Capacity Chart
ATTACHMENTS AND OPTIONS SUPER LONG FRONT BOOM AND ARM RKA49480 EXPLANATION OF LIFT CAPACITY CHART WARNING The excavator used in handling operations must conform with current local regulations and be equip- ped with safety valves and an overload alarm in compliance with EN 474-5. Legend A: Reach from swing centre B: Bucket hook height...
Page 514 SUPER LONG FRONT BOOM AND ARM ATTACHMENTS AND OPTIONS Working conditions • With fully extended bucket cylinder. • On a compact horizontal level ground. • If object handling is performed with other tool installed, the weight difference of the tool shall be deducted from value of this table.
Page 515 ATTACHMENTS AND OPTIONS SUPER LONG FRONT BOOM AND ARM Overload diagram 22B-00-R1640 6-27 WENAM00550_1...
Page 516: Handle Machine Ready For Installation Of Attachment
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF AT- TACHMENT EXPLANATION OF COMPONENTS G0126359 (1) Stop valve (4) Lock pin (2) Selector valve (5) Additional filter for breaker (3) Attachment control pedal (6) Accumulator (for low pressure) STOP VALVE The stop valve stops the flow of the hydraulic oil.
Page 517: Selector Valve
ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT SELECTOR VALVE The selector valve switches the flow of the hydraulic oil. It is automatically switched according to the selected working mode. It is necessary to switch the working mode to match the attachment that is installed.
Page 518 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS ATTACHMENT CONTROL PEDAL WARNING If you perform operations with your foot on the pedal, the attachment may suddenly move if you de- press the pedal by mistake, and this may lead to serious personal injury or death. Lock the pedal with the lock pin when pedal operation is not necessary.
Page 519 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ADDITIONAL FILTER FOR BREAKER NOTICE Always install an additional filter in the return circuit on machines equipped with a hydraulic breaker. The additional filter for breaker prevents deterioration of the hy- draulic oil when using a breaker.
Page 520 REMARK Ask your Komatsu distributor to have the monitor setting changed so that two attachments are available if the attach- ment 2 system is to be equipped as a field kit.
Page 521 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT BREAKER MODE SWITCH WARNING Lock the pedal with the lock pin in order to prevent the breaker from moving incidentally when operat- ing the breaker by using the breaker mode switch. When the attachment operation is performed, the screen on the machine monitor is automatically switched to the bird's eye view display of KomVision.
Page 522: Change Over And Connect Hydraulic Circuit Of Attachment
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS CHANGE OVER AND CONNECT HYDRAULIC CIRCUIT OF ATTACHMENT CONNECT HYDRAULIC CIRCUIT When you install the attachment, connect the hydraulic circuit as follows. Check that the rotor of the stop valves installed to the pip- ing for the inlet port and the outlet port on the side face of the arm, is at the LOCK position (b).
Page 523 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Dimensions of stop valve (2) (k): 26.2±0.2 mm (l): 25 mm (m): SW16 (n): 12 mm (o): 96.3 mm (p): 52.4±0.2 mm (q): 80 mm G0126389 (r): 4-M10×20 DEEP After the piping is connected, bleed air from the circuit as follows. NOTICE If the attachment has its own air bleeding procedure specified by the manufacturer, obey it.
Page 524: Remove And Install Attachment
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS REMOVE AND INSTALL ATTACHMENT WARNING Lower the attachment to the ground and stop the engine. REMOVE ATTACHMENT Lower the attachment to the ground and stop the engine. Turn the starting switch to the ON position (B). Hold the red part at the front end of the lock lever, and op- erate it to the FREE position (F).
Page 525 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Hold the red part at the front end of the lock lever, and op- erate it to the LOCK position (L). Turn the starting switch to the OFF position (A). Remove the 4 bolts (1), and open the hydraulic tank top cover (2).
Page 526 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Set the rotor of the stop valve to the FREE or LOCK posi- tion as follows. Turn the rotor (3) to set it to the FREE or LOCK posi- tion. G0126361 12.
Page 527 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Turn the starting switch to the ON position (B). Hold the red part at the front end of the lock lever, and op- erate it to the FREE position (F). Operate each control lever (work equipment, travel) and attachment control pedal fully in each direction in 15 sec- onds after the engine is stopped to release the internal...
Page 528 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Turn the starting switch to the OFF position (A). Remove the 4 bolts (1), and open the hydraulic tank top cover (2). 10. Loosen the cap of oil filler port (F) gradually to release the internal pressure.
Page 529 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Set the rotor of the stop valve to the FREE or LOCK posi- tion as follows. Turn the rotor (3) to set it to the FREE or LOCK posi- tion. G0126361 After the attachment is installed, check the oil level in the hydraulic tank.
Page 530: Operate Attachment
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS OPERATE ATTACHMENT WARNING • If the pedal is operated when the auto-deceleration is being actuated and the engine speed is drop- ped, the engine speed will suddenly increase, so be careful when operating. •...
Page 531 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT OPERATE MACHINE WHEN WORKING MODE IS NOT IN BREAKER MODE Change the working mode and enter the breaker mode. Press the working mode selector switch (1). The screen changes to the working mode selection screen.
Page 532 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS CHECK POINTS WHEN USING BREAKER • Is the stop valve in FREE position? • Is the working mode set to B mode? For the oil passage route, see “CHANGE OVER AND CONNECT HYDRAULIC CIRCUIT OF ATTACH- MENT (6-34)”.
Page 533 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Press working mode selector switch (1) or switch F3 or F4 to select attachment mode ATT/P or ATT/E. With Attachment Mode ATT/P or ATT/E highlighted in yel- low, enter the selection by either of the following opera- tions.
Page 534 If the attachment pressure adjustment system has a failure, stop the operation and move the machine to a safe place, then consult your Komatsu distributor for the inspection and maintenance. Change the working mode and enter the Attachment Mode.
Page 535 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT OPERATE ATTACHMENT 1 (CRUSHER ETC) WARNING Lock the pedal with the lock pin in order to prevent the attachment from moving incidentally when oper- ating the attachment by using the attachment 1 (crusher etc) proportional switch. General attachment 1 can be operated by using the proportional switch on R.H lever or the R.H.
Page 536 ETC) REMARK Ask your Komatsu distributor to have the monitor setting changed so that two attachments are available if the attachment 2 system is to be equipped as a field kit. Operate the attachment 2 proportional switch on L.H. lever.
Page 537: Long-Term Storage
ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT LONG-TERM STORAGE NOTICE If there is no breaker or general attachment installed, operating the pedal may cause overheating and other problems. If the equipment is not to be used for a long time, do as follows. •...
Page 538: Specifications
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS SPECIFICATIONS Hydraulic specifications • Max. flow at merge: 121×2ℓ/min • Safety valve cracking pressure of service valve: 24.5MPa{250kgf/cm } (other than B mode) • Safety valve cracking pressure of service valve: 17.2MPa{175kgf/cm } (B mode) When the tool control is installed •...
Page 539: Attachments And Options
• Installing attachments or optional equipment without consulting your Komatsu distributor may not only cause problems with safety, but may also have an adverse effect on the operation of the ma- chine and the life of the equipment.
Page 540: Handle Rubber Pad Shoes And Road Liners
ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS Precaution for track shoe selection • Since working conditions “B” and “C” are for wide shoe, their use is limited. Check the precautions for use and the using condition, and then use a suitable shoe. •...
Page 541 ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS Storage and maintenance • Take care that no oil or grease sticks to the rubber. If it does, wipe it off immediately. • Install rubber pad shoes and road liner (A) corresponding to the number of the links. If there is any missing pad or liner, the rubber will be great- ly deformed and damaged.
Page 542: Install Attachment
ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS INSTALL ATTACHMENT WARNING Depending on the type or combination of work equipment, there is a danger that the work equipment may hit the cab or machine body. When using unfamiliar work equipment for the first time, check before starting if there is any danger of interference, and operate it with care.
Page 543: Recommended Attachment Operations
The attachments and models ready for installation are different by the machine body. For the selection of the attachments or the models, consult your Komatsu distributor. This manual gives the precautions which must be obeyed when you install an attachment and operate the hy- draulic excavator.
Page 544 RECOMMENDED ATTACHMENT OPERATIONS ATTACHMENTS AND OPTIONS Hit the same surface continuously only 1 minute or less. When the chisel does not penetrate or break the surface by continu- ous hitting to the same surface for 1 minute, change the hitting point and scrape from the edge to break the surface.
Page 545 ATTACHMENTS AND OPTIONS RECOMMENDED ATTACHMENT OPERATIONS Do not do the work by swing force. Do not move the chisel during the hitting. Do not hit horizontally or upward. Do not do the work in water. Do not twist the chisel while it is penetrated. 6-57 WENAM00550_1...
Page 546 RECOMMENDED ATTACHMENT OPERATIONS ATTACHMENTS AND OPTIONS Do not do the pick work. Do not extend the bucket cylinder rod fully to lift the machine off the ground. Do not do such work. Do not do the hitting while the hydraulic cylinder is at the stroke end.
Page 547 ATTACHMENTS AND OPTIONS RECOMMENDED ATTACHMENT OPERATIONS Incorrect posture Do not lubricate it while the hydraulic breaker is lowered to the ground. Do not lubricate it while the chisel is not lowered to the ground. 6-59 WENAM00550_1...
Page 548 WENAM00550_1...
Page 549: Replacement Parts
REPLACEMENT PARTS WENAM00550_1...
Page 550: Periodic Replacement Of Defined Life Parts
PERIODIC REPLACEMENT OF DEFINED LIFE PARTS For using the machine safely for an extended period of time, Komatsu highly recommends the periodic replace- ment of the defined life and fire prevention-related parts listed in the table of the defined life parts.
Page 551: Consumable Parts
• As a result of our continuous efforts to improve product quality, the part number can be changed. When you make an order of the parts, tell your Komatsu distributor the machine serial number to check the latest part number.
Page 552: Recommended Fuel, Coolant, And Lubricant
• Komatsu recommends the use of Komatsu genuine engine oil for KDPF. The use of oil other than Komatsu genuine engine oil for KDPF will have bad effects to the engine components such as re- duced KDPF filter cleaning interval or reduced lubrication function by deterioration of the engine oil.
Page 553 • The fuel can possibly leak because of the deterioration of rubber material of the fuel hose. Replace it with the fuel hose applicable for biofuel. Consult your Komatsu distributor for replace- ment of the fuel hose. •...
Page 554: Lubrication Chart
RECOMMENDED FUEL, COOLANT, AND LUBRICANT REPLACEMENT PARTS LUBRICATION CHART • The lubrication chart uses the symbols to show the lubrication points and types of lubricant by each lubrica- tion interval. Keep this chart in the magazine box in the cab to allow the personnel to refer to it as needed for lubrication. •...
Page 555 REPLACEMENT PARTS RECOMMENDED FUEL, COOLANT, AND LUBRICANT Symbol Description of the symbol Symbol Description of the symbol Read the Operation and Maintenance Manual. Supply grease Change engine oil Check oil level in engine oil pan Change hydraulic oil Check oil level in hydraulic tank Change power train oil Check power train oil level Replace engine oil filter...
Page 556: Use Fuel, Coolant And Lubricants According To Ambient Temperature
AF-NAC (KES) AF-NAC (Note 4) EN 590 Class2 Fuel tank Diesel fuel EN 590 Grade D DEF tank DEF (Note 5) Abbreviation for Komatsu Engineering Standard Specified capacity Reservoir Refill capacity (ℓ) (ℓ) Engine oil pan 12.5 11.5 Swing machinery case...
Page 557: Recommended Brands And Qualities Other Than Komatsu Genuine Oils
Note 1: KDPF engine oil for cold district is deteriorated easily than that for normal area (replace every 500 hours), so replace oil and filter cartridge every 250 hours. Consult your Komatsu distributor to change the main- tenance interval of the machine monitor.
Page 558 WENAM00550_1...
Page 559: Index
INDEX INDEX Symbols Air conditioner compressor belt tension - Check / Ad- just..............4-59 12h/24h mode............3-83 Air conditioner equipment........3-239 1st-line attachment proportional switch....3-93 Air conditioner fresh air filter - Clean.....4-71 2-piece - Preparation for storage and lifting machine.. Air conditioner fresh/recirc air filters - Clean..
Page 560 INDEX Battery electrolyte - Check level when it is impossible Cover with lock - Close........3-233 to check from side..........4-57 Cover with lock - Open........3-233 Bio-fuel..............4-7 Cover with lock - Open/Close......3-233 Blade control lever..........3-102 Cup holder............3-111 Bleed air from between pump and hydraulic tank.4-48 Current abnormality display switch.......
Page 561 INDEX Engine - Operate/Check before you start... 3-178 Fuel - Check level/Add........3-160 Engine - Start..........2-30,3-181 Fuel and lubricants..........3-281 Engine - Start in cold weather......3-183 Fuel consumption gauge........3-49 Engine - Start in normal weather......3-181 Fuel consumption gauge display......3-68 Engine - Start with jumper cables..... 3-294,3-295 Fuel consumption record - Clear......3-67 Engine - Stop............
Page 562 Key-on camera position........3-86 Machine - Start after long-term storage....3-285 Komatsu Closed Crankcase Ventilation (KCCV) 3-135 Machine - Steer (change direction).....3-204 Komatsu Diesel Particulate Filter (KDPF) - Handle..Machine - Stop............3-203 ..............3-124 Machine - Store long-term........6-49 Komatsu machine operator privacy policy....1-7 Machine - Swing..........
Page 563 INDEX Magazine box............3-111 Paraffin-based fuel..........4-9 Maintenance..........3-77,6-21 Phenomena that are not failures......3-287 Maintenance - Every 250 hours......4-54 Pilot display............3-39 Maintenance - Every 5000 hours......4-97 Pilot display and meter display......3-38 Maintenance during long-term storage....3-285 Play music with USB connected......3-257 Maintenance information.........4-6 Power supply outlet..........3-113 Maintenance interval for hydraulic breaker...
Page 564 USB............. 3-257 Sound balance - Adjust........3-259 Radiator coolant level caution lamp...... 3-32 Specifications..........6-23,6-50 Radio..............3-252 Specifications - PC138US-11E0......5-2 Radio - Check preset region....... 3-263 Specifications (2-piece boom).......6-13 Radio - Check version.........3-263 Split measurement - Stop........3-68 Radio - Operate..........3-256 Standard torque............
Page 565 INDEX Transportation............. 3-269 Travel lever............3-100 Your machine serial numbers and distributor..1-18 Travel motor - Bleed air.........4-49 Travel partial mode recommendation guidance..3-43 Travel speed display..........3-40 Travel speed selector switch.........3-56 Troubles and actions...........3-286 Troubles and actions on chassis......3-297 Tuning/time setting switch........3-254 Turbo protection function........
Page 566 PC138US-11E0 HYDRAULIC EXCAVATOR Form No. WENAM00550 ©2021 KOMATSU All Rights Reserved Printed in Europe 11-2021 WENAM00550_1...