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KX040-4
Operator's Manual
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Kubota KX040-4, KX057-4, U55-4 Operator's Manual

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Page 1
OPERATOR'S MANUAL
MODEL
English (U.S.A./CANADA) Code No. RD158-8121-3
040-4
K X
0 4 0
-
4
1BAAAADAP1010
1BAAAADAP0600
KUBOTA Corporation 2012
©
READ AND SAVE THIS MANUAL
Page 2
LIST OF ABBREVIATION
Abbreviations Description
API ASTM CECE
DIN
EN OSHA FOPS
FRONT
Hi
ISO
JIS
L
L/min
Lo MIL rpm
ROPS
American Petroleum Institute American Society for Testing and Materials, USA Committee for European Construction Equipment German Institute for Standards, Federal Republic of Germany European Standard Occupational Safety and Health Administration Falling Object Protective Structures "Front" means the front view towards the boom and dozer High speed International Standardization Organization Japanese Industrial Standard Volume (Liter) Liter per minute Low speed Military Standards Revolutions Per Minute Roll-Over Protective Structures
SAE
TPSS
AI CRS DPF
DOC
P/L SCV AFS
EGR
PCV
MAF
Society of Automotive Engineers, USA Two Pattern Selection System Auto Idle Common Rail System Diesel Particulate Filter Diesel Oxidation Catalyst Pressure Limiter Swirl Control Valve Air Flow Sensor Exhaust Gas Re-circulation Positive Crankcase Ventilation Mass Air Flow
California Proposition 65
WARNING
Engine exhaust, some of its constituents, certain vehicle components and fluids, contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KX040-4 AR . E . 4 - 4 . 3 . AK
Page 3

GENERAL SYMBOLS

The instruments and operation elements have been marked with a series of symbols in order to simplify the operation of excavator. These symbols are listed below with the respective descriptions.
Safety alert Symbol Warning lamp ''Fuel level too low'' System lamp Warning lamp ''Engine Oil pressure'' Warning lamp ''Battery charge'' Warning lamp ''Auto Idle (AI) Lamp'' Indicator lamp ''Glow'' Working light switch Horn Wiper/Washer switch Diesel Hydraulic fluid Gear oil
Boom swing (left) Boom swing (Right) Dozer raise Dozer lower Operation direction of control lever Operation direction of control lever Read operator's manual Engine stop control lamp DPF Standby / Regeneration Engine Rev up Inhibit DPF Regeneration Eco mode (Energy saving mode)
Grease Fast Slow Excavator - Overhead movement toward the front Excavator - Overhead movement toward the rear Boom up Boom down Arm up Arm crowd Bucket crowd Bucket dump
Page 4

FOREWORD

You are now the proud owner of a KUBOTA Excavator. This excavator is a product of KUBOTA quality engineering and manufacturing. It is made of fine materials and under a rigid quality control system. It will give you long, satisfactory service. To obtain the best use of your excavator, please read this manual carefully. It will help you become familiar with the operation of the excavator and contains many helpful hints about excavator maintenance. It is KUBOTA's policy to utilize as quickly as possible every advance in our research. The immediate use of new techniques in the manufacture of products may cause some small parts of this manual to be outdated. KUBOTA distributors and dealers will have the most up-to-date information. Please do not hesitate to consult with them. Please note that there may be some differences between your actual machine and the illustration in the instructions.
3
This symbol, the industry's ''Safety Alert Symbol'', is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to assemble or use this unit.
3 3 3
IMPORTANT :
NOTE :
DANGER :
WARNING :
CAUTION :
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
Indicates that equipment or property damage could result if instructions are not followed.
Gives helpful information.

SAFETY FIRST

Page 5
CONTENTS
SAFE OPERATION............................................................................................ -1
DEALER SERVICE......................................................................................................1
TECHNICAL DATA......................................................................................................2
DESCRIPTION OF MACHINE PARTS........................................................................ 3
INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 4
CHECKS BEFORE START.........................................................................................6
DAILY CHECKS.......................................................................................................6
CHECKING THE DEVICES.....................................................................................6
Starter Switch ...................................................................................................................6
Display Selector Switch.......................................................................................... ..........7
LCD Display for Normal Operation...................................................................................7
Warning Lamp ................................................................................................................10
LCD Display for Warning................................................................................................10
Setting the Clock.............................................................................................................12
Reordering the year/month/day and Changing the AM/PM System to the 24-hour One13
Log Record.....................................................................................................................14
Periodic Check................................................................................................................15
If All the Check Points are not Displayed at a Glance on a Single Screen.....................15
When the Check-up is Completed..................................................................................17
Horn Switch ....................................................................................................................17
Light Switch ....................................................................................................................17
AUX Port Flow Rate Limit Switch ...................................................................................17
Auto Idle Switch..............................................................................................................18
Throttle Potentiometer....................................................................................................18
Travel Speed Switch.......................................................................................................18
Inhibit Diesel Particulate Filter (DPF) Regeneration Switch ...........................................19
ECO MODE............................................................................................................20
CAB TYPE MACHINES .........................................................................................20
Wiper/Washer Switch .....................................................................................................20
Interior Lamp...................................................................................................................20
Heater Switch .................................................................................................................21
Beacon Light Switch.......................................................................................................21
Opening/Closing of CAB Door........................................................................................21
Opening/Closing of Front CAB Window..........................................................................22
Opening/Closing of Side CAB Window...........................................................................22
Emergency Hammer.......................................................................................................22
AIR CONDITIONER...............................................................................................23
Air Flow...........................................................................................................................23
Air Control Vent ..............................................................................................................23
Control Panel..................................................................................................................24
Operation........................................................................................................................24
HANDLING THE SAFETY DEVICES.....................................................................24
Pilot Control Lock Lever..................................................................................................24
OPERATION OF THE ENGINE.................................................................................25
Page 6
CONTENTS
STARTING THE ENGINE......................................................................................25
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 26
STARTING WITH AN AUXILIARY BATTERY .......................................................27
Observe Following Guidelines when Starting with an Auxiliary Battery..........................27
CHECK POINTS AFTER STARTING THE ENGINE............................................. 27
STOPPING THE ENGINE...................................................................................... 28
Engine Stop Button.........................................................................................................28
Precautions in case of Overheat..................................................................................... 28
EXCAVATOR OPERATION ......................................................................................29
RUNNING-IN OF THE NEW EXCAVATOR...........................................................29
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..29
Oil Change in the Run-in Stage......................................................................................29
Adjusting the Operator's Seat.........................................................................................29
Seat Belt.........................................................................................................................30
STARTING............................................................................................................. 30
Pilot Control Lock Lever..................................................................................................30
DRIVING................................................................................................................31
Drive Levers(Right,Left)..................................................................................................32
TURNS...................................................................................................................32
Pivot Turn .......................................................................................................................32
Spin Turn........................................................................................................................33
UP AND DOWNHILL DRIVING..............................................................................34
PARKING ON A SLOPE........................................................................................34
OPERATION OF THE DOZER..............................................................................34
TWO PATTERN SELECTION SYSTEM(TPSS).................................................... 35
Pattern Change...............................................................................................................35
OPERATION OF THE BOOM................................................................................36
OPERATION OF THE ARM...................................................................................36
OPERATION OF THE BUCKET............................................................................37
UNIT SWING AND BOOM SWING OPERATION..................................................37
Unit Swing Operation......................................................................................................37
Boom Swing Operation................................................................................ ........... ........37
AUXILIARY PORT OPERATION...........................................................................38
Selecting the Action Modes............................................................................................38
AUX Port Handling Procedure........................................................................................39
Setting the Maximum Flow Volume................................................................................41
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 46
ANGLE BLADE OPERATION................................................................................ 47
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION...............................48
BOOM LOWERING VALVE................................................................................... 49
AUTO IDLE (AI) OPERATION...............................................................................49
ANTI-THEFT DEVICE (for KCL only).....................................................................50
Anti-Theft Device............................................................................................................50
IMPORTANT INFORMATION ON EXCAVATOR OPERATION............................53
TRANSPORTING THE EXCAVATOR ON A VEHICLE.............................................54
LIFTING OF THE EXCAVATOR................................................................................56
MAINTENANCE.........................................................................................................58
MAINTENANCE INTERVALS................................................................................58
Page 7
CONTENTS
OPENING AND CLOSING OF COVERS . .............................................................. 63
Opening/Closing of the Engine Hood.............................................................................63
Opening/Closing of the Side Cover................................................................................63
Where to store the Tool..................................................................................................64
Cup Holder......................................................................................................................64
Where to store the Grease Gun......................................................................................64
Where to keep Operator's Manual..................................................................................64
DAILY CHECKS.....................................................................................................65
Checking Coolant Level..................................................................................................65
Checking Fuel Level.......................................................................... .......... ........... ........65
Checking Engine Oil Level..............................................................................................66
Checking Hydraulic Oil Level..........................................................................................66
Checking V-belt ..............................................................................................................67
Checking Radiator and Oil Cooler..................................................................................67
Checking Washer Liquid.................................................................................................68
Checking and Cleaning Engine and Electrical Wiring.....................................................68
Washing Whole Machine................................................................................................68
Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)................68
Greasing Bucket Pin.......................................................................................................69
Greasing Boom Swing Fulcrum......................................................................................69
REGULAR CHECKS AND MAINTENANCE WORK .................................................70
EVERY 50 SERVICE HOURS...............................................................................70
Draining Fuel Tank .........................................................................................................70
Draining Water Separator...............................................................................................70
Checking Battery Condition............................................................... .......... ........... ........71
Greasing Swing Bearing Teeth.......................................................................................72
EVERY 200 SERVICE HOURS.............................................................................73
Adjusting V-belt Tension.................................................................................................73
Checking Radiator Hoses and Clamps...........................................................................74
Grease Swing Ball Bearing.............................................................................................74
Inspection and Cleaning Air Filter Element.....................................................................74
Air Filter Maintenance.....................................................................................................75
Cleaning Evacuator Valve ..............................................................................................75
Checking Diesel Particulate Filter (DPF) Muffler............................................................75
Checking Fuel Line and Intake Air Line..........................................................................76
AIR CONDITIONER...............................................................................................76
Cleaning Air Filter...........................................................................................................76
Checking Air-Conditioner Condenser.............................................................................77
EVERY 500 SERVICE HOURS.............................................................................77
Changing Engine Oil(Change the engine oil every 500 hours,or every 1 year in the case
that service hour is less than 500 hours)........................................................................77
Replacing Engine Oil Filter Cartridge (Replace the engine oil filter cartridge every 500
hours,or every 1 year in the case that service hour is less than 500 hours)...................78
Drive unit Oil Change(First Oil Change of the 50 hours)................................................78
Replacing Fuel Filter Cartridge.......................................................................................79
Replacing Breather Filter................................................................................................79
Replacing Fan Belt .........................................................................................................79
EVERY 1000 SERVICE HOURS...........................................................................79
Replacing the Hydraulic Pilot Filter Element...................................................................79
Replacing Hydraulic Return Filter Element.....................................................................80
Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 80
Page 8
CONTENTS
Hydraulic Oil Check with Hydraulic Hammers................................................................81
EVERY 1000 SERVICE HOURS OR ONCE A YEAR........................................... 82
Replacing Air Filter Element...........................................................................................82
EVERY 1500 SERVICE HOURS...........................................................................82
Checking Injector Tip......................................................................................................82
Replacing Oil Separator Element and O Ring................................................................82
Checking EGR Cooler ....................................................................................................83
EVERY 2000 SERVICE HOURS...........................................................................83
Checking the Alternator and Starter Motor.....................................................................83
EVERY 3000 SERVICE HOURS...........................................................................83
Checking EGR System...................................................................................................83
Checking Turbocharger............................................................................... ...................83
Cleaning Diesel Particulate Filter (DPF).........................................................................83
ANNUAL SERVICING............................................................................................83
Checking Air-Conditioner Pipes and Hoses....................................................................83
Checking Exhaust Manifold (Cracks, Gas, Leakage and Mounting Screw) ...................83
Checking Intake Air Line for Air Leaks............................................................................83
Checking Boost Sensor and AFS (Air Flow Sensor)......................................................83
Checking Condition of Diesel Particulate Filter (DPF) Muffler........................................83
Checking Diesel Particulate Filter (DPF) Differential Pressure Pipes and Hoses ..........83
Checking Diesel Particulate Filter (DPF) Exhaust Gas Temperature Sensor.................83
Checking EGR Piping for Gas Leak ...............................................................................83
BIENNIAL SERVICING.......................................................................................... 84
Replacing Air-Conditioner Pipes and Hoses...................................................................84
Replacement of Radiator Hoses and Hose Clamps.......................................................84
Changing Radiator Coolant ............................................................................................84
Replacing Fuel Hoses and Clamps ................................................................................85
Replacing Intake Air line.................................................................................................86
Replacement of Oil Separator Rubber Hose..................................................................86
Replacement of Diesel Particulate Filter (DPF) Differential Pressure Sensor Rubber
Piping (Front and Back)..................................................................................................86
Replacement of Suction pipe downstream the AFS (Air Flow Sensor)..........................86
Replacement of Boost Sensor Pressure Rubber Piping.................................................86
Replacement of EGR Cooler Hose.................................................................................86
SERVICING AS REQUIRED..................................................................................86
Checking Amount of Refrigerant (gas) ...........................................................................86
OTHER ADJUSTMENTS AND REPLACEMENTS....................................................87
PURGING OF THE FUEL SYSTEM......................................................................87
ADJUSTMENT OF TRACKS ................................................................................. 87
Special Information when Using Rubber Tracks.............................................................88
CHANGING THE BUCKET....................................................................................89
FUSES...................................................................................................................89
Replacing Fuses.............................................................................................................89
Fuse Capacities and Circuits..........................................................................................90
Auxiliary Electric .............................................................................................................91
Slow Blow Fuse..............................................................................................................91
TROUBLESHOOTING...............................................................................................92
OPERATION UNDER COLD WEATHER CONDITIONS .......................................... 94
PREPARATION FOR OPERATION IN COLD WEATHER.................................... 94
PROCEDURE AFTER DONE WORK....................................................................94
Page 9
CONTENTS
LONG STORAGE...................................................................................................... 95
RECOMMENDED OILS.............................................................................................97
APPENDICES............................................................................................................99
MAIN DIMENSIONS ..............................................................................................99
LIFTING CAPACITY................................................................................................ 100
LIST OF SCREENS.................................................................................................103
LIST OF NORMAL SCREENS.............................................................................103
NAVIGATION LIST OF SCREENS. ..................................................................... 104
Page 10
Page 11

SAFE OPERATION

-1SAFE OPERATION
Careful operation is your best insurance against an accident.
Read and understand this manual carefully, before operating the excavator.
Every user, however experienced, should carefully read and understand this manual and those of the attachments and accessories before operating the excavator. The owner is obliged to inform all operators of these instructions in detail. Keep this manual in the storage location. (See "Where to keep Operator's Manual" in "MAINTENANCE" section.)
1. BEFORE OPERATION
1. Know your equipment and its limitations. Read and understand this entire manual before attempting to start and operate the excavator.
2. Obey the danger, warning and caution labels on the machine.
3. For your safety, a ROPS/FOPS (Roll-Over Protective Structure, Falling Objects Protective Structure.) with a seat belt is installed by KUBOTA. Always use the seat belt when the machine is equipped with a ROPS/ FOPS as this combination will reduce the risk of serious injury or death, should the excavator be upset or falling objects occur. Do not modify any structural members of the ROPS/ FOPS by welding, drilling, bending, grinding or cutting, as this may weaken the structure. If any component is damaged, replace it. Do not attempt repairs. If the ROPS/FOPS is loosened or removed for any reason, make sure all parts are reinstalled correctly. Tighten mounting bolts to proper torque.
4. ROPS/FOPS structure complies with ISO 3471, ISO 3449 and OSHA regulations.
5. The seat belt must be inspected regularly and replaced if frayed or damaged.
(1) Seat belt
6. Always sit in the operator's seat when starting engine or operating levers or controls.
7. Study control lever pattern A and pattern B. Then choose the one which is most familiar. Familiarize yourself with the pattern selected by operating the unit slowly and at low engine speed.
A Engage the lever lock to prevent accidental pattern
change.
(1) Pattern selector lever (Two Pattern Selection System:TPSS) (2) Lever lock
8. Do not operate the excavator while under the influence of alcohol, medication, controlled substances or while fatigued.
(A) "Pattern A" (B) "Pattern B"
Page 12
SAFE OPERATION-2
9. Check the surroundings carefully before using the excavator or when attachments are being attached.
A Pay attention to the overhead clearance with electric
wires.
A Check for pipes and buried cables before digging. A Check for hidden holes, obstacles, soft underground,
and overhangs.
11. Do not wear baggy, torn or oversized clothing when working with the excavator as such clothing can get caught in rotating parts or control elements which can cause accidents or injuries. Wear adequate safety clothing, e.g. safety helmet, safety shoes, eye protection, ear protection, working gloves, etc., as necessary and as prescribed by law or statutes.
(1) Helmet (2) Clothing fit for work (3) Tight seams (4) Good grip footwear (5) Well fitting cuffs (6) Working gloves
(7) Straw hat (8) Towel (9) Baggy trousers (10) Loose cuffs of the shirt (11) Baggy shirt (12) Rubber sandals
A Do not allow any persons within the working range of
the excavator during operation.
A Check local regulations before digging and call
diggers hotline before working, www.diggershotline.com or 811 (WI) and www.ne­diggers.com or 1-800-331-5666 (NE).
10. Do not allow anyone to use the excavator until they have been advised of the work to be performed and they have indicated that they have read and understood the operator's manual.
12. Do not allow passengers to ride on any part of the excavator at anytime. The operator must remain in the excavator seat during operation.
13.Check levers, pedals and all mechanical parts for correct adjustment and wear. Replace worn or damaged parts immediately. Check nuts and bolts regularly for correct torque.
14.Keep your excavator clean. Heavy soiling, grease, dust and grass can cause fires, accidents or injuries.
15.Use only KUBOTA authorized attachments.
16. Before starting the excavator, be absolutely sure that the excavator has been filled with fuel, lubricated, greased and undergone all necessary maintenance.
17. Do not modify the excavator, as such it could lead to unforeseen safety problems.
18.Do not operate a hydraulic hammer on anything that is above the operator's seat level as objects may fall into the operator station.
19.Make sure attachments, particularly those utilizing quick attach systems, are securely mounted.
20.Install protective guards on the excavator when working in areas where objects may fall or be thrown.
Page 13
2. OPERATING THE EXCAVATOR
1. Mount and dismount the machine safely. Always face the machine. Always use handrails and available steps and keep yourself well balanced. Do not grab or hold any of the control levers and switches. Do not jump on or off the machine, whether stationary or in motion.
2. Start and control the excavator only from the operator's seat. The driver should not lean out of his seat when the engine is running.
3. Before starting the engine, make sure that the lock levers are in the "Lock" position and all control levers and pedals are in their neutral positions and the seat belt is fastened correctly.
4. Before operating the excavator, make sure that the dozer blade is in front of you. If the levers are activated with the dozer blade at the rear, the tracks will move in the opposite direction of the drive levers.
-3SAFE OPERATION
7. When operating, keep hands and body inside of the ROPS / FOPS protective envelope. Do not touch or depress the control levers or the pedals from outside the cab while the engine is running.
8. Take precautions against tipping over. Stay away from steep slopes and embankments. Do not swing the bucket downhill. Lower the dozer blade when digging. Keep the bucket as low as possible while driving uphill. Turn slowly on slopes (at reduced speed). Do not place the excavator near the edges of trenches and banks, as the earth can give away due to the weight of the excavator. ALLOWABLE CLIMBING ANGLE : 36 % (20 deg.) ALLOWABLE ANGLE CROSS : 27 % (15 deg.)
9. Watch where you are going at all times. Watch for and avoid obstacles. Remain alert for trees, wires and other obstructions.
C Safety for children
Tragedy can occur if the operator is not alert to the presence of children. Children generally are attracted to machines and the work they do.
5. Do not operate or idle engine in a non-ventilated area. Carbon monoxide gas is colorless, odorless, and deadly.
1. Never assume that children will remain where you last saw them.
2. Keep children out of the work area and under the watchful eye of another responsible adult.
3. Be alert and shut your machine down if children enter the work area.
4. Never carry children on your machine. There is not a safe place for them to ride. They may fall off and be run over or interfere with your control of the machine.
5. Never allow children to operate the machine even under adult supervision.
6. Never allow children to play on the machine or on the attachments.
7. Use extra caution when backing up. Look behind and down to make sure the area clear before moving.
8. When parking your machine, if at all possible, park on a firm, flat and level surface; if not, park across a slope. Lower the bucket and dozer to the ground, stop the engine, release pressure in the hydraulic system, place the pilot control lock lever in the locked position, remove the key and lock the cab door (if equipped), before you leave.
6. Keep all safety equipment and covers in place. Replace damaged or missing safety devices.
Page 14
SAFE OPERATION-4
3. AFTER OPERATION
Before leaving the machine, A Park the excavator on a firm, flat and level surface. If
this is not possible, park across the slope.
A Lower the attachments and the dozer blade to the
ground.
A Stop the engine. A Release pressure in the hydraulic system. A Lock all control levers. A Remove the key. A Lock the cab door (if equipped)
4. SAFE LOADING AND TRANSPORT OF THE EXCAVATOR
1. Observe all regulations concerning the transport of excavators on public roads.
2. Use adequately long and robust ramps when loading on the machine. (for details see "TRANSPORTING THE EXCAVATOR ON A VEHICLE")
3. Do not change the running direction and to avoid tipping over, do not try to swing the attachment crosswise to the loading ramps.
4. Lower the attachment on the loading bed and release the pressure from the hydraulic system. After loading the excavator on the truck, block the tracks with blocks and tie down the excavator at the appropriate locations.
(1) Pilot control lock lever (A) "Unlock"
(B) "Locked"
(1) Chain (2) Block
5. Avoid abrupt braking of the vehicle with the excavator loaded. Sudden braking cause the excavator to move and may cause a serious accident.
6. When towing the excavator or pulling a load, the load must be less than the strength of the towing line attached to excavator. The towing eye should not be used for tie down or lifting of the machine.
(1) Tow line
Page 15
Max. drawbar pull at coupling hook
Max. vertical load at coupling hook
7. Do not use the hooks on the roof of CAB for lifting the excavator.
70450 N (15840 lbs, 7183 kgf)
7210 N (1621 lbs, 735 kgf)
5. MAINTENANCE
Before doing maintenance work on the excavator, place the machine on a firm, flat and level surface, lower the attachments to the ground, stop the engine, release pressure trapped in the hydraulic system, lock all control levers and remove the key. When dismantling hydraulic parts, make sure that the hydraulic oil has cooled down sufficiently to avoid burns. Start maintenance work carefully, e.g. loosen plug slowly so that oil will not squirt out.
1. Before doing work on the engine, the exhaust system, the radiator and the hydraulics, let the excavator cool down sufficiently.
2. Always turn off the engine when filling the fuel tank. Avoid spilling and over-filling of fuel.
3. Smoking is prohibited while refueling or handling the battery. Keep sparks and fire away from the fuel tank and battery. Flammable gases escape from the battery, especially during charging.
4. Do not use or charge a refillable type battery if the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion. Check the fluid level regularly and add distilled water as required so that the fluid level is between the UPPER and LOWER levels.
5. Read and follow the directions "STARTING WITH AN AUXILIARY BATTERY" in "OPERATION OF THE ENGINE", when starting with an auxiliary battery.
6. Keep a first-aid box and a fire extinguisher at hand at all times.
-5SAFE OPERATION
7. Do not open the radiator cap before the radiator has cooled down sufficiently First loosen the cap to the first stop and allow the system enough time to release the remaining pressure. Then loosen the cap completely.
8. To avoid short-circuiting the battery, always remove the ground cable first and attach the positive cable first.
9. Oil under high pressure can penetrate the skin and may be harmful to your health if not treated immediately.
10.Leaking hydraulic fluid has enough pressure to penetrate the skin and cause serious injuries. Leakages from pin holes can be totally invisible. Do not use hands for checking for leaks. Always use a piece of wood or cardboard. It is strongly recommended that you use a face mask or eye protection. Should injuries occur with leaking hydraulic fluid, contact a doctor immediately. This fluid can cause gangrene or serious allergic reactions.
11.To avoid environmental damage from acid and heavy metals, dispose of the battery appropriately.
12.Observe all laws and regulations concerning the disposal of used oil, coolants, solvents, hydraulic fluids, battery acids and batteries.
Page 16
SAFE OPERATION-6
13. To avoid fire, do not heat the hydraulic components (tanks, pipes, hoses, cylinders) before they have been drained and washed.
14.Use eye protection or a face mask to protect the eyes and respiratory system against dust and other foreign particles.
15.Securely support excavator with stands or suitable blocking before working underneath. For your safety, do not work under any hydraulically supported devices. They can settle, suddenly leak down, or be accidentally lowered.
16. Do not dismantle the spring of the track tensioner. If dismantling is necessary, contact your KUBOTA dealer where the machine was purchased, or competent service shop. The assembly must be done according to the KUBOTA work shop manual (W.S.M.) for the product involved.
17.When lifting the machine itself with an attachment, place a safety block or safety post to prevent the machine from rolling over. Keep the lock lever for attachment control in the "LOCK" position.
18. Inspect ROPS / FOPS for damage and if damage is found contact your KUBOTA dealer for repair.
19.KUBOTA does not use asbestos containing components and recommends against the use of such components. Components containing asbestos should be handled in accordance with applicable regulations and industry practice.
20.Do not open high-pressure fuel system. High-pressure fluid remaining in fuel lines can cause serious injury. Do not disconnect nor attempt to repair fuel lines, sensors, or any other components between the high­pressure fuel pump and injectors on engines with high­pressure common rail fuel system.
21. To avoid hazardous high voltage, turn the key switch to the OFF position if it is necessary to check to repair the computer, harness or connectors.
22.For proceeding to regenerate the DPF, a warning indicator appears on the LCD display to tell you to increase the engine rpm to its specified level. Follow that instruction.
23.When the Diesel Particulate Filter (DPF) is in the regenerating cycle, the exhaust gas and the DPF muffler become hot. During regeneration, take into account that the muffler will be very hot and keep the machine away from other people, animals, plants, and flammable material. Also keep the area near the DPF muffler clean and away from flammable material.
24.The DPF-regeneration-caused exhaust gas may adversely affect people, animals and plants. Before this action, look around the machine for added safety.
25.During DPF regeneration keep the surrounding environment in mind. Do not allow the ambient temperature to rise excessively due to heat from the regeneration. If such occurs activate the inhibit switch.
26.Fire prevention Excavator and some attachments have components that are at high temperatures under normal operating conditions. The primary source of high temperatures is the engine and exhaust system. The electrical system, if damaged or incorrectly maintained, can be a source of arcing or sparks. The following fire prevention guidelines will help to keep your equipment up and running efficiently and keep the risk of fire to a minimum.
A Blow off all accumulated debris near hot engine
exhaust components such as turbocharger and exhaust manifold as well as exhaust pipes and muffler more frequently when working in severe conditions.
A Clean out all accumulated flammable debris such as
leaves, straw, pine needles, branches, bark, small wood chips and any other combustible materials from inside the machine belly pans or lower unit structures as well as from area in proximity to the engine.
A Inspect all fuel lines and hydraulic hoses for wear or for
deterioration. Replace them immediately if they begin to leak.
Page 17
A Examine electrical wiring and connectors frequently
for damage. Repair any wires that are loose or frayed before operating the machine. Clean all electrical connections and tighten all electrical connections as necessary.
A Inspect the exhaust system daily for any signs of
leakage. Check for broken pipes and muffler and also for loose or missing bolts, nuts and clamps. If any exhaust leaks or fractured parts are found, repairs must be completed prior to operation.
A Always keep a multipurpose fire extinguisher on or
near the machine. Be familiar with the operation of the fire extinguisher.
-7SAFE OPERATION
Page 18
SAFE OPERATION-8
6. DANGER, WARNING AND CAUTION LABELS
Page 19
-9SAFE OPERATION
Page 20
SAFE OPERATION-10
Page 21
-11SAFE OPERATION
Page 22
SAFE OPERATION-12
Page 23
-13SAFE OPERATION
Page 24
SAFE OPERATION-14
7. CARE OF DANGER, WARNING AND CAUTION LABELS
1. Keep danger, warning and caution labels, clean and free from obstructing material.
2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.
3. Replace damaged or missing danger, warning and caution labels with new labels from your KUBOTA dealer.
4. If a component with danger, warning and caution label(s) affixed is replaced with new part, make sure new label(s) is (are) attached in the same location(s) as the replaced component.
5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge.
Page 25

DEALER SERVICE

Your KUBOTA dealer is always ready to help so that your excavator offers the best performance. After having carefully read these instructions, you will realize that much of the routine maintenance can be done by yourself. Your KUBOTA dealer is responsible for servicing and the delivery of spare parts. When ordering spare parts from your KUBOTA dealer, always mention the serial number of the excavator and the engine. Note these numbers right away in the supplied lines.
Model Serial No. Excavator Engine Dealer's name
(To be filled in through the owner)
[For KCL only]
This product is equipped with an electronic key (see "ANTI-THEFT DEVICE" section) as a theft-prevention measure. This device restrains a theft, but does not guarantee that the machine will not be stolen.
1DEALER SERVICE
(1) Serial No.
(1) Engine serial No.
Page 26
2 TECHNICAL DATA

TECHNICAL DATA

KUBOTA EXCAVATOR
Model name KX040-4
Type Canopy CAB
Operating weight (including operator's)
Type Water cooled 4 cycle diesel engine with 3 cylinder Model name D1803-CR-TE4-BH1 D1803-CR-TE4-BH2 D1803-CR-TE4-BH1 D1803-CR-TE4-BH2
Total
Engine
Performance
Dozer
Boom swing angle
Pressure connection for attachments
Fuel tank capacity L (US gal) 64 (17)
displacement Engine power
SAE J1955 gross Rated speed rpm 2200
Low idling speed rpm 1150 Unit swing speed rpm 9.2
Travel speed
Ground pressure (With operator)
Max. climbing angle
Angle in case of crossing slope
Width x Height mm (in.)
Max swing
Max. displacement (Theoretical)
Max. pressure
Fast km/h (mph) 5.0 (3.1) Slow km/h (mph) 2.9 (1.8)
Left deg --- 25 Right deg --- 25 Left rad (deg) 1.20 (70) Right rad (deg) 0.96 (55)
kg (lbs.) 4170 (9193) 4310 (9502) 4330 (9546) 4470 (9855)
cc (cu.in) 1826 (111.4)
kW (Hp) 30.1 (40.4)
kPa
(kgf/cm )
[psi]
% (deg) *36 (20)
% (deg) *27 (15)
L (US gal) /
min
MPa
(kgf/cm )
[AUX1 port] 17.2 [Thumb port] 17.2 (175) (175)
[psi]
[2500] [2500]
31.2
(0.318)
[4.53]
32.3
(0.330)
[4.68]
1700 x 350
(66.9 x 13.8)
65 (17) (AUX1 port)
37 (9.8) (Thumb port)
Angle Blade Type
Canopy CAB
32.4
(0.331)
[4.70]
1700 x 385
(66.9 x 15.2)
33.5
(0.342)
[4.86]
A Above dimensions are based on the machine with QUICK HITCH BUCKET. A Above dimensions are based on the machine with rubber track. A Specifications subject to change without notice. D With unloaded digging bucket. D Firm compacted soil. D Operators must exercise extra caution and follow instructions in the operator's manual. D Worse condition or heavier attachment to the above will decrease climbing angle. A ROPS/FORS structure complies with ISO 3471, ISO 3449 and OSHA regulations.
Page 27
3DESCRIPTION OF MACHINE PARTS

DESCRIPTION OF MACHINE PARTS

DEPICTED CONTENTS (1) Bucket cylinder (2) Arm (3) Bucket link 2 and 3 (4) Bucket link 1 (5) Bucket
(6) Swing bracket (7) Arm cylinder (8) Canopy (9) Seat (10) Swing frame
(11) Boom cylinder (12) Dozer cylinder (13) Dozer blade (14) Boom (15) Cab
(16) Drive sprocket (17) Track roller (18) Front idler
Page 28
4 INSTRUMENT PANEL AND CONTROL ELEMENTS

INSTRUMENT PANEL AND CONTROL ELEMENTS

B Instrument Panel, Switch
(1) LCD display (2) Horn switch (3) Travel speed switch
(12) User setting switch (Switch 1) (13) - (Switch 2) (14) AUX port enable switch (Switch 3) (15) Information switch (Switch 4) (16) Display selector switch (Switch 5)
(4) Starter switch (5) Throttle potentiometer (6) Light switch
(7) Auto idle control switch (8) Angle blade control switch *Angle blade type only
Starter switch............................................................. 6
LCD display................................................................ 7
Fuel gauge Water temperature gauge Hour meter Engine tachometer Glow lamp User setting switch AUX port enable switch Information switch
Display selector switch............................................... 7
Warning lamp............................................................. 10
Horn switch................................................................ 17
Light switch................................................................ 17
Auto idle control switch............................................... 18
Throttle potentiometer................................................ 18
Travel speed switch................................................... 18
(9) Eco mode switch (10) DPF inhibit switch (11) Beacon light switch (Cab only)
Ref. page
Page 29
B Control Pedals and Levers
5INSTRUMENT PANEL AND CONTROL ELEMENTS
(1) Drive lever (left) (2) Attachment control lever (left)
(3) Boom swing pedal (4) Drive lever (right)
(5) Attachment control lever (right) (6) Dozer control lever *Angle blade type
(7) Drive pedal (left) (8) Drive pedal (right)
Ref. page
Drive lever (left) ............................................... 32
Attachment control lever (left) .......................... 36, 37
Boom swing pedal ........................................... 37
Drive lever (right) ............................................. 32
Attachment control lever (right) ....................... 36, 37
Dozer control lever .......................................... 34
Page 30
6 CHECKS BEFORE START

CHECKS BEFORE START

DAILY CHECKS

In order to avoid damage, it is important to check the condition of the excavator before starting.
To avoid personal injury: A Do maintenance work on the excavator only on
level ground with the engine off and the lock lever in the "Lock" position.
Checks
Go around the excavator and check for visual damage and wear. Check coolant level. (See "DAILY CHECKS" in "MAINTENANCE" section.) Check fuel level. Check engine oil level. Check hydraulic fluid level. Check air filter for clogging. Check all grease points. Check all control lamps, indicators, tachometer and hour meter. Check the light system. Check the seat belt and the ROPS/FOPS safety device. Check the condition of the safety and warning labels. (See "DANGER, WARNING AND CAUTION LABELS" in "SAFE OPERATION" section.) Inspect ROPS / FOPS for damage and if damage is found contact your KUBOTA dealer for repair.

CHECKING THE DEVICES

BStarter Switch
A [STOP]
The key can be inserted at the "STOP" position.
A [RUN]
Turn the key one click from the "STOP" position to the "RUN" position. All the circuitry gets energized to start preheating. The glow indicator is displayed. To check for any lamp breakage, however, the lamp lights up and stays on for about 1 second.
A [START]
Move the pilot control lock lever to the "LOCKED" position. Turn the key from the "RUN" position another click to the "START" position. The starter motor is then activated to get the engine started. Release your hand from the key, and the key returns itself to the "RUN" position. In other words, once the engine has started, be sure to free the key.
(1) Starter switch (A) STOP
(B) RUN (C) START
A If the key is repositioned from "RUN" to "STOP" but not
pulled out, the message "pull out key" appears onscreen.
A With the key off and pulled out, nothing appears
onscreen.
[Status with the key off but not pulled out]
Page 31
7CHECKS BEFORE START
BDisplay Selector Switch
Press the display selector switch while the engine is running. The LCD meter display will change from one indication mode to the other. Change the two-mode display according to your jobs.
(1) Display selector switch
C AUX port in use
BLCD Display for Normal Operation
C Fuel gauge
To avoid personal injury:
A Before adding fuel, be sure to stop the engine. A Be sure to keep open flame away from the
machine. Otherwise a fire may result.
With the starter key at the "RUN" position, the fuel remaining in the fuel tank is indicated in the block.
(1) Display selector switch
A Even with the starter key not yet inserted, press the
electronic meter's user setting switch or the display selector switch, and the LCD display shows the hour meter, fuel gauge, water temperature gauge and clock for 10 seconds.
(1) Fuel gauge
If the fuel runs short, open the cap and refuel the tank.
(1) Fuel cap (2) Fuel level audible indication switch
A If the fuel gauge indicator is near the "E" or the
"FUEL" message appears, add fuel as soon as
possible. If the indicator is near "E" and the machine is operated on a slope, the engine may run out of fuel.
A To open the fuel cap, keep the key inserted.
Page 32
CHECKS BEFORE START8
C Fuel level audible indication switch (when
refueling)
1. With the starter key at the "OFF" position, press the fuel level audible indication switch, and the fuel level can be checked by the buzzer.
2. Start refueling the machine. The buzzer beeping intervals vary according to how much fuel is poured into the tank. As the fuel tank is filled up, the buzzer will sound almost continuously.
3. While refueling the machine, listen to the buzzer to know how much the fuel tank is filled.
4. If fuel is poured too slowly, the buzzer will stop beeping. When resumed normally, the buzzer will start beeping.
5. To stop refueling halfway (before filling up), press the fuel level audible indication switch or simply stop refueling for a while. The buzzer will stop sounding.
C Coolant Temperature Gauge
To avoid personal injury: A Do not open the radiator cap during or just after
operation. Hot coolant may gush out and scald you. Wait for the coolant to cool down before opening the cap.
With the starter key at the "RUN" position, the coolant temperature is indicated.
(1) Coolant temperature gauge
If the coolant temperature indicator is near "H", take the steps below. Depending on the coolant temperature, the warning message "Water temp. is rising" or "Overheat Engine to idle for cooling" appears. In either case too, follow the same procedure below.
1. Discontinue the job.
2. Reduce engine rpm's to idle and keep it at idle for 5 minutes.
3. Stop the engine and check the following points (1)-(4). (1) Low coolant level or leak (2) Fan belt tension (3) Mud or dust deposits on radiator
(4) Hydraulic oil leak
Page 33
9CHECKS BEFORE START
C Overheat warning
1. If the coolant temperature becomes too high, the message "Water temp. is Rising" appears onscreen for a certain period of time. The LCD display then gets back to normal, but the coolant temperature sensor marker " " starts blinking at 1-second intervals.
C Hour-meter
Indicates the total operating hours of the machine.
How the indicator works A The meter advances one hour after an hour of
operation regardless of the engine rpm.
(1) Hour-meter
C Engine tachometer
(1) Coolant temperature sensor marker
A If this message is displayed, the EGR valve will begin
to close and EGR system will not function. Interrupt the work and lower the engine rpm, which will reduce the coolant temperature.
2. The overheat warning appears onscreen. Also the following message shows up on the LCD display, and the engine automatically starts idling. (Acceleration is not operative.)
If the above message appears, take corrective measures, referring to the "Precautions in case of Overheat" section.
A When the coolant temperature has dropped,
acceleration can be automatically enabled.
Indicates the current rpm of the engine.
(1) Engine tachometer
Page 34
CHECKS BEFORE START10
C Glow indicator
The indicator is displayed when the starter key is turned to the "RUN" position but the engine requires preheating. Wait until the indicator goes out, and then start the engine.
(1) Glow indicator
BWarning Lamp
The warning lamp is used to indicate broken wire, short­circuit, fuel shortage and other problems. The warning lamp starts flashing in red if any problem occurs. If the system senses a in warning signal, the warning lamp starts flashing in yellow.
A If the warning illuminates, do not just look at the meter;
carry out the appropriate inspection and correction accordingly. (See "REGULAR CHECKS AND MAINTENANCE WORK" section)
BLCD Display for Warning
C Remaining fuel warning
When the fuel level is very low, the lamp (yellow) starts flashing and the following message appears in the display.
A After a short period of time, the display comes back to
normal.
A After a short period of time, the message shows up
again.
A Even while in the normal display mode, the warning
lamp keeps on blinking.
A To see what warning is being given out, press the
display selector switch. The current warning can then be identified.
C Battery charge warning
If the starter key is turned to the "RUN" position without starting the engine, and the charging lamp stays off, the charging system has failed. If such occurs, immediately contact your local dealer for repair.
A If any warnings and problems are displayed, an alarm
buzzer will beep. (See "LIST OF SCREENS" section for detail.)
A See your KUBOTA dealer from details concerning
care and maintenance.
(1) Warning lamp (red, yellow)
(1) Charging lamp
Page 35
11CHECKS BEFORE START
C Engine oil pressure low warning
When the engine oil pressure drops too low, the lamp (red) starts flashing and the following message appears in the display. Immediately stop the engine and check the engine oil level.
(1) Oil lamp
A If the starter key is turned to the "RUN" position
without running the engine and the oil lamp stays off, then the hydraulic system may have failed. If such occurs, immediately contact your local dealer for repair.
Information
(1) Information switch
A " mark" may appear together with a warning message. If such occurs, the details can be checked by pressing the information switch. When contacting your local dealer for repair, notify them of the information provided.
Example;
Press the information switch, and a detail such as shown below appears.
C Various error warnings
If any components are detected to be in trouble, the following message appears onscreen. (See "LIST OF SCREENS" section)
A Press the information switch again, and the display
goes back to the previous screen.
Page 36
CHECKS BEFORE START12
User settings
BSetting the Clock
1. Turn the starter key to the "RUN" position.
3. Press the switch 2 twice to move the cursor into position. Then press the save switch 5 to make the following screen appear. By pressing the switch 4, the year, month, day, hour and minute will be selected in this order. Select an item to readjust.
(1) Starter switch (A) STOP
(B) RUN (C) START
2. Press the switch 1 to make the log record/periodic check/clock set screen appear.
(1) Switch 1 (2) Switch 5 (3) Cursor
(4) Switch 2 and 3 (5) Switch 4
(1) Switch 5 (2) Switch 2
(3) Switch 3 (4) Switch 4
Press the switch (Switch 2) and the numeric setting will be smaller. Press the switch (Switch 3) and the numeric setting will be larger.
Hold down the or switch, and the numeric setting will change quickly. Press the switch (Switch 2), and the year, month, day, hour and minute will be selected in this order.
Page 37
4. Save the new setting with the switch (Switch 5). Press this switch 5 again to set the clock.
(1) Switch 5
[Status after setting the clock]
13CHECKS BEFORE START
(1) Switch 5
BReordering the year/month/day and
Changing the AM/PM System to the 24­hour One
1. On the user setting screen, select "Various Settings".
(1) Switch 5
A Be careful not to accidentally press the switch 5 on
the clock setting screen. Otherwise the seconds will be set to "00" and the clock will show the wrong time.
A When the user setting switch (Switch 1) is pressed on
the clock setting screen, the clock is not readjusted and returns to the pervious menu screen.
A If the clock is interrupted, for example when the battery
is disconnected, the following message appears onscreen. Press the switch 5 to set the clock again.
2. Select "Calendar/Clock Set" menu screen.
Page 38
CHECKS BEFORE START14
3. Press the switch 5 and the following detailed screen shows up.
(1) Switch 2 and 3 (2) Switch 4 (3) Switch 5
(A) Year/month/day display (B) Clock display
(1) Using the switch 2 and 3, move up and down the
items. The year/month/day on Side (A) will be reordered.
(2) Using the switch 4, move the cursor to Side (B).
Select the "AM/PM" system or the "24-hour" system.
(3) Press the switch 5, and the new settings will be
made. If the switch 1 is pressed, the previous settings will remain.
2. Press the switch 1 to make the menu appear onscreen.
3. Press the switch 2 and 3 to select the log record. Fix this choice with the switch (Switch 5).
(1) Switch 1 (2) Switch 5 (3) Cursor
(4) Switch 2 and 3 (5) Switch 4
4. Press the switch 5 to make the calendar appear onscreen. Press the switch 2, and the log records (machine's operating days) for the last month and the month before last (90 days ago) can be reviewed. The highlighted days indicate when the machine was operated.
A Consult your KUBOTA dealer for details.
BLog Record
The log record helps you check the last 3-month operating record of the machine. Take the following steps.
1. Set the starter key to the "RUN" position.
(1) Starter switch (A) "STOP"
(B) "RUN" (C) "START"
(1) Switch 5 (2) Switch 2 and 3
A Some days may appear marked with [-] when the log
record is unknown because of a new setting of the clock, a disconnection of the battery or other factors.
Page 39
15CHECKS BEFORE START
BPeriodic Check
The following message appears on the LCD display 10 hours before a periodic check.
Press the switch 4 to see the check results.
BIf All the Check Points are not Displayed at
a Glance on a Single Screen
1. Press the switch 4.
2. Each time the switch 2 or 3 is pressed, the check points scrolled up or down.
(1) Switch 4 (2) Switch 2
(3) Switch 3
(1) Switch 4
Do the following servicing listed below.
A When the servicing has been completed, turn the key
switch ON and OFF 10 times or more and the check screen automatically disappears.
A When the periodic check interval has passed, the
message "Periodic Check Passed" shows up. Immediately perform the specified servicing.
A The periodic check screen can also be preset to be
made to disappear manually only. To do this, it is necessary to select "Periodic Check" on the user setting menu. For make this setting, contact your local dealer.
Page 40
16 CHECKS BEFORE START
C Service hour meter
When the hour meter reaches the hours circled in the maintenance list below, a message appears. The message shows up as follows.
No. Check points Measures
50 100 250 500 600 750 1000 1500 2000 3000
Hour meter indicator
Intervals
1
2 Fuel filter
3 Engine oil filter
4 Drive unit oil change
5 Breather filter replace
6 Hydraulic oil change
7
8
9
10 Pilot filter
Engine oil
(CJ-4)
Outer
Air filter
element
Hydraulic return
filter element
Hydraulic suction
filter element
element
Inner
element
change
replace
replace
every
500 hrs
every
500 hrs
every
500 hrs
every
500 hrs
every
500 hrs
every
1000 hrs
every
1000 hrs
every
1000 hrs
every
1000 hrs
every
1000 hrs
every
1000 hrs
11
12
13 DPF clean
Engine oil mist separator filter
Idler, Track roller,
grease
-
every
1500 hrs
every
2000 hrs
every
3000 hrs
First operation
Page 41
BWhen the Check-up is Completed
When the check-up is completed, perform the following procedure to make the Periodic Check disappear from the screen.
1. The message below appears onscreen to prompt the completion of the check-up.
2. To take a look at the check points, press the information switch. The check points appear onscreen.
3. When the check-up has been completed, press the switch 5. If not, press the switch 1 to go back to the previous screen.
17CHECKS BEFORE START
BLight Switch
When the starter switch is in position "RUN", the working light(s) and CAB light(s) will be switched on by pressing the switch.
(1) Light switch
(1) Switch 4 (2) Switch 1 (3) Switch 5
BHorn Switch
(1) Horn switch
C Night operation
To avoid personal injury: A When the working light and CAB light alone do
not provide sufficient visibility, prepare additional stationary artificial lighting and observe safety rules for night work.
BAUX Port Flow Rate Limit Switch
It is possible to freely readjust the actuator's maximum flow rate in the AUX operating mode. (See "AUX PORT OPERATION" section for detail.)
(1) AUX port flow rate limit switch
Page 42
CHECKS BEFORE START18
BAuto Idle Switch
The switch is used to enable and disable the Auto Idle control.
A Enable: Press the Auto Idle switch. When the
Auto Idle control is on, the Auto Idle lamp stays on.
A Disable: Press the Auto Idle switch once again.
Now the Auto Idle control is deactivated (The Auto Idle lamp goes out.)
BTravel Speed Switch
Travel speed will increase when this switch is pushed down. Switching the dual travel speed:
1. Press the travel speed switch. The buzzer beeps twice and the travel speed changes from low to high. The
symbol lights up.
2. Press the travel speed switch again, and the buzzer beeps once and the travel speed changes from high speed to low. The symbol goes out.
(1) Auto idle switch (2) Auto idle lamp
BThrottle Potentiometer
1. Sit down on the operator's seat and turn the throttle potentiometer clockwise (toward the high speed), and the engine revs up.
2. To stop the engine, turn the throttle potentiometer fully toward the low speed and keep the engine at the idling speed. Then set the starter key to the "STOP" position.
(1) Travel speed switch (2) Speed indicator light
A When activating the travel speed switch, it must be
pushed down completely.
A Each time the travel speed switch is pressed, the
travel speed is switched between low and high.
(1) Throttle potentiometer
Page 43
19CHECKS BEFORE START
A The travel speed automatically changes into first
speed (low speed) when the drive resistance increases while traveling second speed (high speed). Thereafter, when the resistance decreases, it returns to second speed.
A If the tracks are clogged with sand or gravel while
working on soft ground, lift up the track with the help of the boom, arm and bucket and dozer blade, and let the track rotate to remove the sand and gravel.
(A) "Rotate to remove sand and gravel"
BInhibit Diesel Particulate Filter (DPF)
Regeneration Switch
Inhibit Diesel Particulate Filter (DPF) regeneration switch (hereinafter called inhibit switch) disables the Auto DPF regeneration cycle. Activate this switch to turn "off" Auto DPF Regeneration when working around people, animals, plants, and flammable materials. Certain work conditions may require the Auto DPF regeneration cycle to be disabled. Depress the switch once to turn off Automatic mode. Depress the switch once again to return from disable to Automatic mode.
To avoid personal injury: A Do not push the dozer control lever into the
float position as this will cause the machine to suddenly drop.
To avoid serious injury or death: A Do not work under the machine in this
condition.
(1) Inhibit Switch
Page 44
CHECKS BEFORE START20

ECO MODE

In the ECO mode, the jobs can be carried on with better fuel efficiency than in the standard mode. Press the eco mode switch, and the implement panel lamp lights up and the machine comes in the ECO mode. Press this switch again, and the above lamp goes out and the machine comes back in the standard mode.
(1) ECO mode switich
When the machine operates in the ECO mode, the ECO mode mark appears on the LCD screen as shown in the following figure.

CAB TYPE MACHINES

BWiper/Washer Switch
To engage the wiper, turn on the switch for the wiper when the starter key is in the "RUN" position. A further push on the switch will activate the washer system. Even when the wiper switch is in the "OFF" position, the washer switch functions if it is pressed. A Do not activate the washer switch if the tank for the
cleaning fluid is empty; the pump can be damaged.
A Do not activate the wiper switch if the window is dry. In
this case, make sure that cleaning fluid is applied to the pane before activating the wiper.
A In frosty conditions, make sure that the wiper blade is
not frozen to the glass before switching-on. The motor can be damaged if the wiper system is used under such conditions.
(1) ECO mode mark
(1) Wiper switch
BInterior Lamp
To turn on the interior lamp, set the interior lamp switch to the "ON" positions.
(1) Interior lamp (2) Interior lamp switch
(A) "ON" (B) "OFF"
Page 45
BHeater Switch
Turn the starter switch to the "RUN" position and turn the heater switch clockwise, the heater fan will be activated and the cabin will start to warm up. The heater has three position.
(1) Heater switch (2) Temperature control dial
21CHECKS BEFORE START
BOpening/Closing of CAB Door
1. Unlock the CAB door and pull the knob. Open the CAB door fully until fixed into place.
2. To close the CAB door, push the release lever down and close the door.
(1) Door knob (outside)
A During summer, turn the heater valve clockwise to
close the valve.
BBeacon Light Switch
(1) Beacon light switch
It is equipped only with the switch (including the coupler for connecting in a rear left speaker). Since it isn't equipped with the beacon main part, please post - install, when required.
(1) Release lever (2) Door knob (inside)
3. When leaving the excavator, always lock the door.
Page 46
CHECKS BEFORE START22
BOpening/Closing of Front CAB Window
To avoid personal injury: A Keep hands and feet away from the area
between front window and CAB frame. Otherwise the operator risks serious pinching or crushing injuries.
A Other persons should stay clear when opening
the window.
To open and close the front window, take the steps below.
1. Push the lock levers beside grip.
BOpening/Closing of Side CAB Window
1. Pull the grip to release the lock and pull side window open to the rear or to the front.
2. To close the side window, slide it forward or backward until the lock snaps in at the window frame.
(1) Grip
BEmergency Hammer
(1) Grip (2) Lock lever
2. Hold the grips tightly with both hands. Pull the grip slightly upward and toward yourself to let the windshield slide inward.
3. Pull the windshield all the way to the lock at the back of CAB.
4. To close the window, take the reverse steps 3, 2 and 1.
To avoid personal injury: A When breaking the window pane, close your
eyes and cover them with an arm.
The emergency hammer is for breaking a window pane in order to quick escape from the cab, should the window not open.
(1) Emergency hammer
Page 47

AIR CONDITIONER

BAir Flow
Air in the CAB and fresh air introduced into the CAB flow as shown in the figure. Adjust the six air outlet ports to obtain the desired condition.
23CHECKS BEFORE START
(C) "FRESH AIR INLET"
A Do not allow water to enter the fresh air port while
washing the excavator.
(A) "FRONT WINDOW" (B) "CHEST AREA" (C) "FOOT AREA" (D) "SIDE WINDOW" (E) "BACKWARD"
Position the inlet selector lever to the desired position.
(1) Inlet selector lever (A) "FRESH AIR INLET" position
(B) "INNER AIR RECIRCULATION" position
BAir Control Vent
C Front air outlet
The front air outlets can be independently adjusted as required. To defrost the windshield, rotate the outlets toward the windshield.
(1) Front air outlet (A) "FRONT WINDOW"
(B) "CLOSED" (C) "FOOT AREA"
Page 48
CHECKS BEFORE START24
BControl Panel
(1) Air conditioner switch (2) Indicator light
C Air Conditioner Switch and Indicator Light
Push this switch to activate the air conditioner. An indicator light will light up when the switch is set to "ON". Push switch again to turn air conditioner off, the indicator light will go off.
C Temperature Control Dial
Set this dial at the desired position to obtain the desired air temperature. Turn the dial to the right to obtain cooler air. Turn it to the left to obtain warmer air.
C Blower Switch
Air volume can be changed in three steps. At the "3" position, the largest air volume is obtained.
(3) Temperature control dial (4) Blower switch
C Defrosting or demisting
To defrost or demist the windshield, take the following steps.
1. Open the front air outlet and direct it to the windshield.
2. Set the blower switch and the temperature control dial to the "3" and "WARM" (leftmost) positions, respectively.

HANDLING THE SAFETY DEVICES

BPilot Control Lock Lever
A When the excavator is not used or left unattended,
be sure to place the pilot control lock lever in position "Locked".
The pilot control lock lever is located on the left side.
BOperation
C Heating
1. Adjust the blower (1/2/3) switch and the temperature control dial to achieve the desired temperature level.
C Dehumidifying-heating
1. Press and turn on the air-conditioner switch.
2. Turn on the blower (1/2/3) switch.
3. Adjust the temperature control dial to the "COOL" or an intermediate position to achieve the desired temperature level.
A Be sure to close the door while the air conditioner is
ON otherwise, you may overload the compressor.
C Cooling
1. Press and turn on the air-conditioner switch.
2. Turn on the blower (1/2/3) switch.
3. Adjust the temperature control dial to the "COOL" or an intermediate position to achieve the desired temperature level.
(1) Pilot control lock lever (A) "Unlock"
(B) "Locked"
Page 49

OPERATION OF THE ENGINE

Start the engine in the following manner:
1. Before starting the engine, make sure that all control
To avoid personal injury: A Read "SAFE OPERATION" at the beginning of
this operator's manual.
A Obey the danger, warning and caution labels
on the excavator.
A To avoid the danger of exhaust fume
poisoning, do not operate the machine in a closed building without proper ventilation.
A Always start the engine from the operator's
seat. Do not start the engine while standing next to the excavator. Before starting the engine, sound the horn to get the attention of persons standing nearby.
levers are in the neutral positions.
25OPERATION OF THE ENGINE
(1) Horn switch
A Do not use starting fluid or ether. A In order not to overload the battery and starter, avoid
engaging the starter for more than 10 sec.
A If the engine does not start in 10 sec., please wait 20
sec. or more, before attempting to restart.

STARTING THE ENGINE

(1) Attachment control lever (left) (2) Drive lever (left) (3) Drive lever (right) (4) Attachment control lever (right) (5) Throttle potentiometer
2. Pull the lock lever all the way back. (lock position)
3. Put the throttle potentiometer in the middle between " " and " " symbols. The switch for Auto Idle control is in the OFF position. (See "AUTO IDLE (AI) OPERATION" in the Excavator operation.)
To avoid personal injury: A The operator should not depend solely on the
warning lamps, but should always conduct the routine checks (see "MAINTENANCE").
(1) Throttle potentiometer (2) Switch for Auto Idle control
Page 50
OPERATION OF THE ENGINE26
4. Set the starter key to the "RUN" position. Hold the key at this position until the " " mark on the display panel disappears.
(1) Starter switch (A) "STOP"
(B) "RUN" (C) "START"
A If you keep the pilot control lock lever at "UNLOCK"
and try to start the engine, "Up Lever Lock" appears on the meter panel and the engine cannot be started. Before staring the engine, make sure the pilot control lock lever is set at the "LOCK" position.
A When the engine starts, the meter may momentarily
turn off and a beep may sound. This is not a problem.
[For KCL only]
A This machine is equipped with an anti-theft device. If
you try to get the engine started with the wrong key, "Wrong key""Unable to start" appears on the meter panel and the engine cannot be started. Use the specified key.
A Even the correct key, if attached to something metallic
(key ring, for example), may fail to start the engine. In such case, remove the metallic attachment and insert the key in the key switch.
5. Now make sure the " " and " " marks appear onscreen. If not, the system has malfunctioned. Contact your local dealer for repairs.
6. Turn the key to the position "START" and release after the engine has started.
7. Check if all warning lamps have gone out. Should a warning lamp still be lit up, stop the engine then remove the key and check for the cause.
A The starter motor draws a large current. Avoid running
it longer than 10 seconds continuously. If the engine fails to start within 10 seconds, set the key to the "STOP" position, wait for 20 seconds or longer, and repeat the above steps 5 thru 7.
A If the battery is dead and must be connected to
another battery with jumper cable, be sure to use a 12V battery. Never use a 24V batteries.

STARTING THE ENGINE UNDER COLD CONDITIONS

To avoid personal injury: A Make sure that the lock lever is in the lock
position during warm up.
Start the engine in the following manner;
1. Make sure the auto idle switch is at the "OFF" position (lamp off).
2. Pull the lock lever all the way back. (Lock position)
3. Insert the starter key into the starter switch.
4. Turn the throttle potentiometer toward " " (high speed) position.
5. Set the starter key to the "RUN" position. Hold the key at this position until the " " mark on the display panel disappears.
6. Turn the starter key to the "START" position.
7. Once the engine starts, release your hand from the key. The key will return back to the "RUN" position.
8. If the engine fails to start, set the starter key to the "STOP" position, and repeat the above steps 5 thru 7.
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27OPERATION OF THE ENGINE
A Let the engine warm up after start-up for approx. 10
minutes under no load conditions. If the hydraulic fluid temperature is too low, the operation will be affected. Do not operate the excavator under full load until the engine has sufficiently warmed up.

STARTING WITH AN AUXILIARY BATTERY

To avoid personal injury: A Battery gases can explode.
Do not smoke and keep sparks and flames away.
A Do not start the engine with an auxiliary battery
if excavator battery is frozen.
A Do not connect the black jumper cable to the
negative (-) terminal of the excavator battery.
BObserve Following Guidelines when
Starting with an Auxiliary Battery
1. Bring the helping machine with the same battery voltage as near as possible to the excavator. THE MACHINES MUST NOT COME IN CONTACT WITH EACH OTHER.
2. Bring the levers and pedal of both vehicles in the neutral position and put the lock lever in the "Lock" position.
3. Wear eye protection and rubber gloves.
4. Open the side cover. (See "Opening / closing of the Side Cover" in "MAINTENANCE" section.)
5. Ensure the vent caps are securely in place (if equipped).
6. Cover the battery opening with a cloth. Make sure that the cloth does not touch the battery terminals.
7. Connect the terminal of the red jumper cable with the plus (+) terminal of the low battery and connect the other end of the cable to the plus (+) terminal of the auxiliary battery.
8. Connect the black negative cable to the minus (-) terminal of the auxiliary battery.
9. Connect the other end of the black cable (coming from the auxiliary battery) to the excavator frame as far away as possible from the low battery.
10. Start the engine of the helping machine and let it run for a while. Start the excavator with the low battery.
11.Disconnect the jumper cables in the reverse sequence (Steps 8, 7, 6).
12.Remove the cloth and replace the vent caps.
(1) Lay a damp rag over the vent caps (2) Low battery (3) Put a cloth over the battery openings (4) Jumper cables (5) Auxiliary battery
A This excavator has a negative (-) ground 12 Volt
starting system.
A Use only the same voltage when using an auxiliary
battery.
A Using a higher voltage will cause serious damage to
the electrical system. When using an auxiliary battery, only the compatible (same) voltage is permissible.

CHECK POINTS AFTER STARTING THE ENGINE

After starting the engine, but before starting operation, check the following points:
1. Put the throttle potentiometer in the middle between " " and " " symbols and let the engine idle for approx. five minutes. This allows the engine lubricant to warm up and penetrate every part of the engine.
2. Once the engine has warmed up, check: A the warning lamp "Engine oil pressure" has gone
out.
A the warning lamp "Battery charge" goes out when
engine speed is increased.
A the color of the exhaust is normal and no abnormal
noises or vibrations are heard or felt.
A no fluid is leaking from pipes or hoses.
C Should any following conditions occur, stop the
engine immediately.
A The engine rpm's increases or decreases suddenly. A Sudden abnormal noises are heard. A Exhaust is black. A Warning lamp for engine oil lights up during operation.
A In these cases, the excavator must be checked and
serviced by your local the KUBOTA dealer.
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OPERATION OF THE ENGINE28

STOPPING THE ENGINE

To avoid personal injury or death: A Do not keep the bucket or dozer in an elevated
position, as a person could accidentally touch the levers and cause serious accidents.
1. Place the bucket and dozer on the ground.
2. After slowing the engine to idle, turn the key to "STOP".
3. Remove the key.
4. Pull the lock lever to "LOCK" position.
BEngine Stop Button
To avoid personal injury:
A Keep hands away from rotating parts.
BPrecautions in case of Overheat
To avoid personal injury: A Do not open the radiator cap during operation
or just after shut-down. Otherwise, steam or very hot coolant may gush out, getting you scalded. Make sure the radiator has cooled down enough before opening its cap.
If by any chance the coolant temperature rises close to or above the boiling point ("H" on the water temperature gauge) (overheat condition), take the following steps.
1. Stop operating the machine. (Relieve the engine of any load.)
2. Do not shut off the engine suddenly. Before shutting off the engine, keep it idling under no load for about 5 minutes.
3. Stay away from the engine or overflow for 10 minutes or until the steam overflow stops.
4. Be sure that there is no danger of getting scalded. Pinpoint and remove the cause of overheat, referring to the "TROUBLESHOOTING" section. Once the issue is resolved, the engine may be restarted.
A Be sure to return the stop button to former position
after the engine stops.
The engine stops when the starter key is turned off. If the engine does not stop, pull the stop button to stop the engine.
(1) Stop button (2) Starter key
Page 53

EXCAVATOR OPERATION

29EXCAVATOR OPERATION
RUNNING-IN OF THE NEW EXCAVATOR
The operation and care of the new excavator influences its life span. Your new excavator has been carefully checked and tested before leaving the factory. In spite of this, all movable components must run-in during the first 50 work hours. Do not work with full rpm's and full loads during this period. It is very important to run-in your excavator properly in order to achieve its full performance and longevity. During the running-in, the following points should be adhered to in all cases.
BDo not Work with Full Engine Rpm's or
Full Loads during the First 50 Working Hours
A Let the engine warm up sufficiently in the cold season. A Do not let the engine rev-up more than necessary.
BOil Change in the Run-in Stage
The lubrication oil plays a specific and important role during the run-in phase of the excavator. The numerous movable parts are not yet run-in, so many fine metal particles are generated, which can cause damage and shorten the life of many components. Pay attention to the oil-change intervals and complete them sooner than later. See "REGULAR CHECKS AND MAINTENANCE WORK" section for more details on the oil-change intervals.
BAdjusting the Operator's Seat
To avoid personal injury: A Make sure that the seat is completely secured
after each adjustment.
(1) Backrest tilt adjust lever (2) Travel adjust lever (3) Weight adjust lever
C Tilt adjustment
Pull the backrest tilt adjust lever in the direction of [A] and move the backrest to the desired angle.
(A) "UNLOCK" (B) "UNLOCK" (C) "TO INCREASE TENSION" (D) "TO DECREASE TENSION"
C Travel adjustment
Pull the travel adjust lever in the direction of [B] and slide the seat backward or forward, as required. The seat will lock in position when the lever is released.
C Weight adjustment
Turn the weight adjust lever to achieve the optimum suspension setting.
C Height adjustment
The seat height can be adjusted to three positions. To adjust the seat height, slowly raise the seat until it automatically engages in the next stop. When the seat is raised over the highest stop, it will be lowered automatically to the lowest position again.
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EXCAVATOR OPERATION30
BSeat Belt
To avoid personal injury or death: A Always use the seat belt with a ROPS/FOPS
protection structure. Adjust the seat to the optimal position and buckle up.
(1) Seat belt
BPilot Control Lock Lever
To avoid personal injury: A To avoid injuries, check safety aspects all
around the excavator.
A If the pilot control lock lever is pulled down, the engine
will fail to start.
Don't attempt to start the machine with the Pilot Control Lock Lever in the down position (A), if attempt is made the following message appears on the LCD display.

STARTING

To avoid personal injury: A No persons, other than those who have read
and understand this manual and who are familiar with the excavator, should be allowed to use the excavator.
A Do not allow any person other than the
operator to ride on the excavator.
A When operating, keep hands and body inside
of the ROPS/FOPS protective.
A Do not touch the control levers and the pedals
from outside the cab while the engine running.
(1) Pilot control lock lever (A) "Unlock"
(B) "Locked"
A Always pull pilot control lock lever up to "Locked"
position (B) when you stop the engine or leave the operating structure.
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31EXCAVATOR OPERATION

DRIVING

To avoid personal injury or death: A Before starting the engine, make sure that no
one is near the excavator.
A Before operating the excavator, check the track
direction. (Front idler and dozer blade to the front of the excavator).
A Recommended technique for working on a
slope.
1. Adjust the engine speed from idling to an intermediate speed.
2. Unlock the pilot control lock lever and pull in the bucket and hold the bucket about 20 to 40 cm (8 to 16 in.) above the ground.
(A) "Front of the excavator"
A Use extra caution when traveling across a
slope or working sideways on a slope.
(1) Pilot control lock lever (A) "Unlock"
(B) "Locked"
(A) 20 to 40 cm (8 to 16 in.)
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EXCAVATOR OPERATION32
3. Activate the dozer control lever to raise the dozer.
(1) Dozer control lever (2) Dozer
(A) "Raise" (B) "Lower"
BDrive Levers(Right,Left)
To avoid personal injury or death: A When driving the excavator keep the dozer
blade in front. To move the excavator forward, move the drive levers to (A) and to move in reverse, move the drive levers to (B) with dozer blade in front. If the dozer blade is behind operator station, then the controls are reversed, moving the excavator forward will require (B) and moving the excavator backwards will require (A), but this is not recommended.

TURNS

To avoid personal injury: A Do not change direction on steep slopes, or the
excavator could tip over.
A Before changing direction, beware of people in
the work area.
BPivot Turn
A Movement as illustrated is done with the dozer blade
in front of the operator.
C Change of Direction while Travelling
1. While travelling forward, bring the left drive lever into the neutral position; the excavator will turn in the direction of the arrow of
the illustration below.
Pushing the drive levers forward, moves the excavator forwards, and vice-versa. The front of the excavator is the side where the dozer is located; the drive sprocket is in the rear of the excavator.
(1) Drive lever (left) (2) Drive lever (right)
(A) "Forward" (B) "Backward" (C) "Straight"
(A) "Travelling forward" (N) "Neutral position"
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33EXCAVATOR OPERATION
2. While travelling backward, bring the left drive lever into the neutral position; the excavator will turn in the direction of the arrow of the illustration below.
(B) "Travelling backward" (N) "Neutral position"
C Change of Direction while Stationary
1. Push the left drive lever forward; the excavator will turn in the direction of the arrow of the illustration below.
2. Pull the left drive lever backward; the excavator will turn in the direction of the arrow of the illustration below.
BSpin Turn
When both drive levers are activated in the opposite directions, both tracks will rotate with the same speed but in opposite directions. The center of rotation is the center of the excavator.
(A) "Left spin turn"
(B) "Right spin turn"
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EXCAVATOR OPERATION34

UP AND DOWNHILL DRIVING

To avoid personal injury: A When travelling up or down a slope, use extra
caution and follow the instructions below.
While traveling uphill, keep the lower edge of the bucket approx. 20 to 40 cm (8 to 16 in.) above the ground. Although the KUBOTA excavator will not slip easily because of the tracks, it is safer to let the bucket slide over the ground while traveling downhill. Always choose slow speed for uphill and downhill traveling.
[UPHILL TRAVELING]

PARKING ON A SLOPE

To avoid personal injury or death: A When the excavator is parked or left
unattended on a slope, be sure to put the bucket on the ground and place all control levers in neutral position, then brace the tracks with chocks.
(1) Chock
[DOWNHILL TRAVELING]
(A) 20 to 40 cm (8 to 16 in.)

OPERATION OF THE DOZER

1. To raise the dozer, pull back the control lever. To lower the dozer, push the control lever forward.
To float the dozer, push the control lever more forward to the locked position.
(1) Dozer control lever (2) Dozer
(A) "Raise" (B) "Lower" (C) "Float" (Locked position)
2. While undertaking earth moving work, control both drive levers with the left hand and the dozer control lever with the right hand.
Page 59

TWO PATTERN SELECTION SYSTEM(TPSS)

To avoid personal injury: A Study control lever pattern A and pattern B.
Then choose the one which is most familiar.
A Position the pattern selector lever (located on
the right side of operator's seat) in either the lower position (Pattern A) or the upper position (Pattern B).
A Engage the lever lock to prevent accidental
pattern change.
A Familiarize yourself with the pattern selected
by operating slowly.
BPattern Change
1. Disengage the lever lock to open the cover and position the pattern selector lever to the desired position.
2. Close the cover and engage the lever lock.
Lever Position Pattern A Pattern B
Attachment Control Lever (Left)
Attachment Control Lever (Right)
A
Boom down
B
Boom up
C
Swing left
D
Swing right Arm up
Arm crowd Bucket crowd Bucket dump
Arm up Arm crowd Swing left Swing right
Boom down Boom up Bucket crowd Bucket dump
35EXCAVATOR OPERATION
(1) Pattern selector lever (Two Pattern Selection System:TPSS) (2) Lever lock
(A) "Pattern A" (B) "Pattern B"
Page 60
EXCAVATOR OPERATION36

OPERATION OF THE BOOM

To raise the boom, pull the attachment control lever back. The boom is equipped with a cushion cylinder which helps prevent excavated material in the bucket from falling out. At low hydraulic oil temperature, (e.g. after starting the engine in cold weather) the cushioning function will be effected for a short period of time (approx. 3 to 5 seconds). This condition results from the viscosity of the hydraulic oil and is not a sign of malfunction. The cushion cylinder will operate normally as the oil warms up. To lower the boom, push the attachment control lever forward.

OPERATION OF THE ARM

Pull back the attachment control lever and the arm will be pulled in. To move the arm out, push the control lever towards the front.
A When pulling in the arm, the movement may stop for a
short moment when the arm is in its vertical position. This is caused by the combined load of the arm and bucket moving the cylinder piston away from the hydraulic flow causing a delay in the cylinder action, until the flow catches up with cylinder piston. This is a characteristic of the hydraulic system and is not a sign of malfunction.
A When lowering the boom, make sure that it does not
hit the dozer and that the bucket teeth do not touch the dozer.
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37EXCAVATOR OPERATION

OPERATION OF THE BUCKET

To dig using the bucket, move the right attachment control lever from the neutral position, left. Moving the control lever right, moves the bucket outwards and empties its contents.
BUnit Swing Operation
1. Move the control lever to the left and the upper structure will turn to the left.
2. Move the control lever to the right and the upper structure will turn to the right.
BBoom Swing Operation
1. Flip the pedal lock up to unlock the pedal.
2. Step on the left side of the pedal to swing the boom to the left.
3. Step on the right side of the pedal to swing the boom to the right.

UNIT SWING AND BOOM SWING OPERATION

To avoid personal injury: A When working in groups, always let the others
know what you are going to do before you do it.
A Keep others away from the machine working
area.
A Be sure to lock the boom swing pedal when the
boom swing function is not used.
(1) Boom swing pedal (2) Pedal lock
A Do not operate the left attachment control lever
abruptly from right to left (or vice versa), because the inertia may cause high impact loads on the swing gear and the swing motor, shortening the life of the excavator.
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38 EXCAVATOR OPERATION

AUXILIARY PORT OPERATION

The auxiliary port enable switch is used to operate hydraulic attachment such as hammers.
BSelecting the Action Modes
The AUX port has been factory-set to three action modes. You can select one of them. Up to five action modes can be preset. Each time the AUX port enable switch (switch 3) is pressed, the action modes change over one after another. And the icon and action mode number on the screen change accordingly.
A When turning the starter key to the "RUN" position, the action mode will return to the last action mode used.
Page 63
C Checking the settings of each action mode
When an action mode is selected and the " " mark appears at the lower right of the icon, the flow volume setting gets displayed by pressing the switch 4.
(1) Icon (2) Information mark (3) Information switch (Switch 4)
[Display in AUX 1 and 2 modes]
39EXCAVATOR OPERATION
BAUX Port Handling Procedure
1. Turn the starter key to the "RUN" position. Let the engine warm up after start-up for approx. 10 minutes under no load conditions.
(1) Starter switch (A) "STOP"
(B) "RUN" (C) "START"
2. Lower the pilot control lock lever (UNLOCK).
(1) AUX Port 1 (2) AUX Port 2 (3) AUX Port 3 (4) AUX Port 4
(1) Pilot control lever (A) "Unlock"
(B) "Locked"
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EXCAVATOR OPERATION40
3. Push the AUX port enable switch (switch 3).
(1) AUX port enable switch (Switch 3)
A If the pilot control lock lever is at the "LOCKED"
position, the following message appears onscreen. Down this lever to the "UNLOCKED" position and then press the AUX port enable switch (switch 3).
[AUX 1 and 2 modes]
If the machine is equipped with the AUX 1 port, move the AUX port knob of the left attachment control lever to the right to send oil to the AUX port 3. Move the AUX port knob of the left attachment control lever to the left to send oil to the AUX port 4.
4. [AUX 1 only] Move the AUX port knob of the right attachment control lever to the right to send oil to the AUX port 1. Move the AUX port knob to the left to send oil to the AUX port 2.
(1) Attachment control lever (left) (2) Attachment control lever (right)
(A) "AUX port 1" (B) "AUX port 2" (C) "AUX port 3" (D) "AUX port 4"
A Proportional control of the AUX port knob allows for
slow-to-fast movement of attachment. Example; If you move the AUX port knob halfway, the attachment will move at approximately one-half speed.
(1) Attachment control lever (right) (A) "AUX port 1"
(B) "AUX port 2"
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41EXCAVATOR OPERATION
C One way hold [AUX 1 mode only]
Press the one way hold switch of the right attachment control lever, and the oil continues to flow through the AUX port 2.
(1) Attachment control lever (right) (2) One way hold switch (right)
(B) "AUX port 2"
A Even if the one way hold switch of the right attachment
control lever is pressed, no function is assigned. In this case, the following message appears onscreen.
BSetting the Maximum Flow Volume
The AUX port has been factory-set to three action modes 1, 2 and 3. The action modes 4 and 5 can also be preset.
C How to make the settings
1. With the starter key at the "RUN" position, press the user setting switch (switch 1), and the following display appears onscreen.
[AUX 1 and 2 modes]
Press the one way hold switch of the left attachment control lever, and the oil continues to flow through the AUX port 2. Press this switch again or move the AUX port knob, and the oil flow is interrupted.
(1) Attachment control lever (right) (2) Attachment control lever (left) (3) One way hold switch (left)
(B) "AUX port 2"
(1) User setting switch (switch 1)
2. Press the switch 2 or 3 to select "AUX Flow Ctrl Set", and then press the switch 5.
(1) Switch 2 and 3 (2) Switch 5
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EXCAVATOR OPERATION42
3. Each time the switch 5 is pressed, the mode number changes. Select your desired setting mode number.
(1) Icon (2) Mode No. (3) Switch 5
4. Take the following steps to set the icons. Each time the switch 4 is pressed, the setting cursor (arrow mark) shifts position. Move the cursor above the icon.
5. Each time the switch 2 or 3 is pressed, the icon changes. Select your desired icons.
(1) Switch 2 (2) Switch 3 (3) Icon
C Types of AUX icons
(1) Setting cursor (arrow mark) (2) Icon (3) Switch 4
(1) AUX (Standard) (2) Brush cutter (3) Rotary grapple (4) Grapple (5) Auger
(6) Clamshell (7) Breaker (8) Tilt bucket (9) Blank (disable) (10) Thumb
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43EXCAVATOR OPERATION
A There is no relationship between the icons and the
flow control settings. Select icons to suit the images of attachments to be connected.
A In an action mode with the disable icon preset, such
action mode is skipped even if selected. Take an example of the following settings:
AUX (standard) icon for action mode 1, Breaker icon for action mode 2, Disable icon for actions modes 3, 4 and 5.
Each time the AUX port enable switch (switch 3) is pressed, the display changes from action mode 1, action mode 2 to normal mode in this order.
[Setting example]
6. Set the maximum flow volume for each AUX port. Press the switch 4 to move the setting cursor (arrow mark) to the port 2 position of Thumb port at the right.
(1) Setting cursor (arrow) (2) Switch 4
(A) Blank (disable) icon
[AUX 1 and AUX 2 modes]
(1) Thumb port (2) AUX 1
(A) "AUX port 1" (B) "AUX port 2" (C) "AUX port 3" (D) "AUX port 4"
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EXCAVATOR OPERATION44
7. Press the switch 2 or 3 to preset the maximum flow volume. Set the bar to the highest level, and the flow volume will be maximized. Set the bar to the lowest level (no bar displayed), and there will be no oil flow. Then press the switch 4 to go to the next port, and make the settings for all the other ports.
(1) Switch 2 (Higher flow volume) (2) Switch 3 (Lower flow volume) (3) Switch 4
(A) "MAX. flow volume" (B) "Output interrupted"
8. Go back to Step 3 to make settings for the next action mode. When all the settings of all the action modes have been made, press the switch 1 to return to the normal screen.
(1) Switch 1
C AUX port MAX. Flow volume
Thumb port 1 AUX 1 port
MAX. flow volume (Theoretical) L(US gal)/min
37
(9.87)
65
(17)
A Some attachments might not be activated even when
the bar level is still somewhat above the lowest position. Or even when the bars of ports 1 and 2 (or of ports 3 and 4) are at the same level, the same speed might not be achieved. This does not indicate a machine problem, however. Readjust the bar to the optimum level according to your attachment manual.
A Suppose that the same attachment is mounted on
another machine. Even if the same flow control setting is made, the same speed cannot be achieved. Make an optimum setting on each machine.
MAX. pressure MPa (kgf/cm ) [psi]
17.2
(175)
[2500]
17.2
(175)
[2500]
A When the AUX port is not used for a long period, dirt
particles can settle in the lower part of the AUX port lines. When the plugs on the AUX port lines are removed to connect attachments, drain approx. 100 cc (3.4 oz) of oil before making connections.
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45EXCAVATOR OPERATION
Page 70
EXCAVATOR OPERATION46
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM
1. Lower the attachments and the blade down to the ground.
2. Turn the key to "STOP" position and shut off the engine.
3. After stopping the engine, turn the key to "RUN" position.
4. Set the lock lever to "Unlock" position.
3. Make sure that the flow volume in all the AUX ports is not minimized. If the pressure is removed after minimizing the flow volume in the AUX port, release pressure is not removed completely and the hose coupler may be unable to connect and disconnect.
(1) Flow volume in AUX port display
(A) Flow volume in AUX port (B) Maximum (C) Minimum
(1) Lock lever for attachment control (2) Attachment control lever (left)
5. Move the operating lever to release pressure in the hydraulic system.
[How to release pressure trapped in the AUX port]
1. Perform the above operations of 1 to 4.
2. Turn "ON" the AUX port enable switch.
(1) AUX port enable switch (Switch 3)
(A) "Unlock" (B) "Lock"
(B) Maximum status of flow volume in AUX port (C) Minimum status of flow volume in AUX port
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47EXCAVATOR OPERATION
4. Move the AUX port knob mounted to the operating lever to the right and left to release pressure in the AUX port.
(1) AUX port knob (2) Attachment control lever
D There are two types of machine, one has the AUX port
knobs mounted to the right and left operating levers, the other has the AUX port knob mounted to one operating lever. Make choice according to the type of machine.

ANGLE BLADE OPERATION

To avoid personal injury or death: A Never jack up or lift the machine with the angle
blade placed at an angle. Stability of the machine is affected with blade at angle, keep at neutral position. Before starting the job, position and keep the angle blade at the standard 0 marking (Refer to Figure (1)).
A Do not work under the machine.
1. Push the angle blade control switch to the right or left, and the angle dozer is placed at an angle.
(1) Angle blade control switch (A) Turn the right
(B) Turn the left
2. For the right-hand angle setting, push the angle blade control switch in direction (A). The angle blade will be placed at an angle toward (A).
3. For the left-hand angle setting, push the angle blade control switch in direction (B). The angle blade will be placed at an angle toward (B).
Figure (1)
(1) Mark (red) (2) Mark (red)
(A) Turn the right (B) Turn the left
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EXCAVATOR OPERATION48
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION
A selection valve which selects 1-way or 2-way circuit of service port has been installed on the hydraulic tank.
1. When equipment which needs a 1-way circuit will be used, position the arrow, by using the selector lever, on the axis of the selection valve to the 1-way circuit position, to reduce the back pressure.
2. When equipment which needs a 2-way circuit will be used, position the arrow on the axis of the selection valve to the 2-way circuit position.
A 1-way circuit.....
A 2-way circuit.....
HAMMER etc. THUMB, TILT BUCKET, AUGER, GRAPPLE etc.
To avoid personal injury: A Stop the engine before removing/changing the
equipment.
A Release pressure in the hydraulic system
before removing/changing the equipment. (See "HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM".)
A Position the selection valve to the correct
position (either 1-way or 2-way circuit selection) before mounting the equipment.
A Always select the correct valve position before
mounting the equipment (1-way or 2-way circuit selection) to avoid sudden movement of the equipment.
A Leaving the selection valve to 1-way circuit selection
and attaching 2-way circuit equipment may cause the equipment to move (drop) suddenly due to its own weight, as the tank line remains open, even with the engine off.
(1) Selection valve (2) Selector lever
Page 73
49EXCAVATOR OPERATION

BOOM LOWERING VALVE

Use this valve if the engine fails to get started and the accumulator fails to operate and there is an urgent need to lower the boom.
To avoid personal injury or death: A When the engine functions, move the control
lever to lower the boom. Never use the boom lowering valve.
A Loosen the boom lowering valve set screw
slowly a quarter turn at a time. Be careful not to loosen it a full turn or more at once because otherwise oil may squirt out accidentally.
A Before starting this job, make sure there is
nobody below the boom.
1. Open the right hood.
2. Loosen the boom lowering valve nut located below the control valve boom block first and then the set screw slowly.

AUTO IDLE (AI) OPERATION

1. Throttle Potentiometer With this potentiometer the operator can adjust the engine speed when the Auto Idle control is activated.
2. Switch for Auto Idle (AI) Control With this switch the Auto Idle control is turned on or off. The Auto Idle control allows the engine speed to drop to idle speed when the control levers are left in neutral for longer than four seconds. If the control is activated, the engine speed rises immediately to the preset rpm. If the Auto Idle is not activated the throttle potentiometer can be utilized to control engine speed in a similar way to a conventional throttle control lever.
(1) Nut (2) Set screw
3. After this operation, tighten the boom lowering valve nut and the set screw in place.
(1) Throttle potentiometer (2) Switch for Auto Idle control (3) Lamp for Auto Idle control
A It is possible that the Auto Idle may not function until
hydraulic oil warms up in the cold weather. Therefore it is not recommended that the Auto Idle be activated until the machine is completely warmed up.
A Before operating the control lever, check the Auto Idle
Indicator Lamp.
A When operating in confined spaces or when loading
onto a vehicle, turn the Auto Idle switch off (Light off). This is to prevent unwanted engine speed increases when control levers are activated.
A The Auto Idle control, when selected by a switch,
provides the operator with a way to control engine speed without moving the Throttle Potentiometer, simply by not activating any control levers for about four seconds after stopping work, and then to simply restore a preset (by potentiometer) engine speed by activating any control lever to return to work.
A The purpose of the system is to reduce fuel
consumption, noise and operator fatigue.
A When the dozer control lever is locked at the "Float"
position on the angle blade type, the Auto Idle function is not activated even if any other control lever is set in the neutral position.
Page 74
EXCAVATOR OPERATION50
ANTI-THEFT DEVICE (for KCL only)

BAnti-Theft Device

This machine is equipped with an anti-theft device, which allows you to start the engine with the registered key alone. If a registered key is stolen, the stolen key can be unregistered. It prevents this key from starting the engine to protect the machine against theft.
With the key at "STOP", the "anti-theft indicator" stays on to tell that the anti-theft function is enabled. Be sure that this indicator is on before leaving the machine.
C How to register a black key (individual key) with
the machine (When a black key is lost)
To avoid personal injury or death: A Before programming an anti-theft key, be sure
to sit on the operator’s seat and make sure all the control levers are in the “Neutral” position. If this is neglected, the machine may start moving as soon as the engine is started, which could lead to a dangerous situation.
A The exhaust gas from the engine includes
harmful substances such as carbon monoxide. Be careful not to make this setting in a room where the exhaust gases easily build up or in an ill-ventilated place.
1. Insert the red key into the key switch. (*Do not turn the inserted key. If the key is turned to the "RUN" position, return it to the "STOP" position.)
(1) Anti-theft indicator (A) "STOP"
(B) "RUN" (C) "START"
C The machine comes with two different types of
keys.
This key is used to start the engine. It is possible to start the engine as before by inserting the key and turning it to the [START] position. Registering a black key with the
Black key (individual key)
Red key (registrati on key)
machine by using the red key will allow the black key to start the engine. A key not registered wit h the machine cannot be used to start the engine.
Initially two keys including a spare key are supplied. The two accompanying keys have been already registered. Up to four keys can be registered.
If a black key for starting the engine should be lost, the red key is used to register another black key with the machine. The engine cannot be started with this key. For the method of using the red key, refer to "How to regist er a black key with the machine".
(1) Red key (A) Insert
2. Press the display selector switch once and the message "Pull out key" appears on the LCD display.
(1) Display selector switch
Page 75
51EXCAVATOR OPERATION
3. Pull out the red key from the key switch, and then the message "Insert the key" appears on the LCD display.
(1) Red key (A) Pull out
4. Insert the black key into the key switch. (* Do not turn the inserted key. If the key is turned to the "RUN" position, return it to the "STOP" position and return to the step 1.) Then the message "Pull out black key" appears on the meter panel after a while. With this message displayed, the black key has been registered with the machine.
5. When all registeration operation has been finished, push the user setting switch.
(1) User setting switch
(1) Black key (A) Insert
Page 76
EXCAVATOR OPERATION52
A If a registered black key is stolen or lost, re-register the
remaining black key. When re-registering is performed, the stolen or lost black key is unregistered and it becomes impossible to start the engine with that key.
A If the red key is stolen or lost, it becomes impossible to
register or re-register a black key (for starting the engine) and the peripheral devices should be replaced. Therefore store the red key with great care. If by any chance it gets lost, promptly contact your dealer or a Kubota-designated service factory.
A Use the Kubota-specified key ring to hold the black key
or the red key. Any unspecified key rings may interfere with the signal transfer between the key and the key switch, possibly failing to start the engine or to register a key properly.
A Do not bundle two or more keys when using them.
Doing so may cause electric wave interference, possibly failing to start the engine.
A Cut and remove the ring that is used to bundle the
keys at the time of delivery. (If the keys remain bundled, the engine may start with the red key or re­registering could not be performed properly.)
A If an unregistered key is inserted and turned more than
six times for one minute, the alarm sounds for 30 seconds. (The alarm keeps sounding even if the key is drawn out.)
D Insert and turn on the registered key, and the alarm
stops itself.
A If something is wrong with the machine, immediately
contact your dealer and have the machine inspected and repaired.
A If a black key is inserted that was previously
registered, "Registered" is displayed on the LCD screen and registering will not be performed.
A If you try to register the fifth black key, "STOP
Register" is displayed on the LCD screen and
registering cannot be performed.
A In some cases, the engine may fail to get started. The
following messages appear according to the situations. (1) Key is being authenticated
For Canada (FCC / IC)
FCC WARNING A Changes or modifications not expressly approved by
the party responsible for compliance could void the user's authority to operate the equipment.
A This device complies with Part 15 of the FCC Rules
and RSS- Gen of the IC rules. Operation is subject to the following two conditions : (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
(2) Starting with the red key
(3) Starting with the non registered key (of other
model)
Page 77

IMPORTANT INFORMATION ON EXCAVATOR OPERATION

A Do not try to crush concrete or boulders using side
swings with the bucket. Also avoid using side sweeps of the bucket to move earth piles.
A Under all circumstances avoid the following
operations: A Excavation using the gravitational impact of the
machine.
A Compacting of gravel or soil using the dropping
action of the bucket.
A Excavation using the traveling power of the
machine.
A Do not try to drop or shake off soil adhering to the
bucket in the manner given in the points below. This can cause damage to the machine. Adhering soil can be shaken off when the bucket is being emptied by moving the bucket out to the maximum stroke of the cylinder. Should this not suffice, swing out the arm as far as possible and operate the bucket back and forth.
A Do not hit the dozer with the boom cylinder!
Make sure that the boom cylinder does not hit the dozer when doing deep excavation. If necessary swing around so that the dozer is in the back of the machine.
A Pay attention when pulling in the bucket!
When pulling in the bucket (for driving or transportation) avoid hitting the dozer.
A Avoid collisions!
When moving the excavator, pay attention that the dozer does not collide with obstructions such as boulders, etc. Such collisions shorten the life of the dozer and the cylinder substantially.
A Support the machine correctly!
When stabilizing the machine with the dozer, lower the dozer to engage the full width on the ground.
A If the water or mud level reaches higher than the top of
the tracks, the swivel bearing, swivel motor gear and ring gear may be exposed to mud, water and other foreign objects. The excavator must be properly pressure washed after each use. A Thoroughly clean the area around the swivel
bearing, swivel motor gear and ring gear to remove foreign objects.
A Inspect the swivel motor oil sump (if equipped) for
water contamination. If water is present, refer to operator's manual for lubricant replacement procedure.
A Refer to operator's manual for proper swivel
bearing, swivel motor gear and ring gear lubrication procedures.
A Reinstall any protective covering if removed
earlier.
53EXCAVATOR OPERATION
Page 78
54 TRANSPORTING THE EXCAVATOR ON A VEHICLE

TRANSPORTING THE EXCAVATOR ON A VEHICLE

B Transporting on a Truck
To avoid serious injury or death: A No directional changes should be made when
the excavator is on the ramp. Should a change of direction be necessary, drive off the ramp completely and make the turn.
A When driving forwards or backwards onto the
vehicle, or when swinging the upper body, make sure that neither the CAB or the gates of the vehicle will be damaged.
To avoid personal injury or death: A After loading the machine on the truck, lower
the bucket and dozer onto the truck bed.
Prepare a platform to load or unload the excavator. Take following steps when using ramps.
1. Apply the parking brakes of the vehicle, and block the drive wheels from both sides.
A When the excavator reaches the point between
the ramps and the bed, halt and then move very slowly until the excavator reaches the horizontal position.
A Move the excavator onto the vehicle only with
the arm completely pulled in.
A Do not jack up the machine using its boom to
load or unload the excavator from the vehicle. Doing this is dangerous. Otherwise the CAB of the vehicle could be damaged when swinging around the upper body.
A Make sure the ramps are of sufficient capacity
and securely connected to the vehicle to safety support the machine throughout the loading / unloading operation.
2. Use mounting brackets to secure the ramp properly. Connect the ramps directly with the bed.
Page 79
3. For additional safety, use blocks or supports under the ramps and the bed.
55TRANSPORTING THE EXCAVATOR ON A VEHICLE
(1) Chain (2) Block
4. Completely align the ramps and the tracks and then drive the excavator slowly up the ramps. After ensuring that the tracks are completely on the bed, swing the upper body around to the back of the vehicle.
5. Lower the dozer onto the bed.
6. Pull in the bucket and arm completely. Then lower the boom.
7. Stop the engine, release pressure trapped in the hydraulic system and remove the key.
8. Raise the lock lever.
9. Block the tracks with blocks and tie down the excavator.
B Towing the machine
To avoid personal injury: A When towing the excavator or pulling a load
must be less than the strength of the towing line attached to excavator. Not to be used for tiedown or lifting the machine.
A Towing is only allowed over a short distance
and at walking speed.
1. Attach the tow bar or towing rope to the hook on the excavator and to the pulling vehicle. The tow bar should be mounted at a right angle to the vehicles.
2. The operator must be seated during the recovery procedure.
3. Drive slowly with the tractive vehicle to avoid abrupt loads.
(A) Tie down point
(1) Tow line
Page 80
56 LIFTING OF THE EXCAVATOR

LIFTING OF THE EXCAVATOR

(3) Lift the boom and get the bucket and arm in their
crowded position. Next set the pilot control lock
To avoid serious injury or death: A The correct instructions for safe handling are
described here. Read these instructions carefully before moving the machine. Make sure that the operating personnel read the operator's manual carefully.
B Basics when Lifting with Cables or Straps
1. The lifting and crane operation is to be undertaken according to the safe operation guidelines described.
2. The equipment used for lifting mentioned in these instructions are only given as reference, the standards concerning strength, control and other details are based on the respective applicable guidelines.
B Safety Aspects when Lifting with Cables or Straps
Abide by the following steps when lifting:
1. Do not lift loads that exceed the maximum load capacity of the crane.
2. Choose correct equipment suitable to the weight, size and form of the load.
3. First assess the center of gravity of the load, position the hook directly over the load and lift the load so that the center of gravity of the load is as low as possible.
4. The steel cables or straps must be fixed in the middle of the hook.
5. The load must be lifted vertically from the ground.
6. Do not enter the working area under suspended loads and do not move the load over people. The load must only be moved in an area where the balance can be easily maintained.
[Blade ends]
(1) Shackle
[Boom top]
lever to the "LOCKED" position.
(4) With the boom not swinging, set the swing pedal
to the neutral position, place the pedal cover and stop the engine.
(5) Apply shackles (3200 kg or heavier-duty) through
the openings at both ends of the blade. And apply shackles (2000 kg or heavier-duty) through the two openings at the boom top. Pass wire ropes through these shackles.
B Lifting Procedure for the Excavator
To avoid personal injury or death: A Do not use the hooks on the roof of canopy and
CAB for lifting the excavator.
A When applying the shackles through the
boom's and blade's openings for lifting, be sure to do two-point lifting for added safety.
A Never lift the machine with the angle blade
placed at an angle. (Angle blade type)
C General guidelines for lifting
1. Lifting position. (see illustration below) (1) Rotate the upper swivel structure until the blade
positions itself 180-degree opposite the attachment.
(2) Raise the blade all the way.
(1) Shackle
Page 81
57LIFTING OF THE EXCAVATOR
2. Attaching the steel cables or straps. (1) Always hook the excavator at three points. (one
on the boom and left and right of the dozer)
(2) Always use a shackle on each lifting hole when
attaching the cables or straps.
(3) Keep the angle between the front and rear cables
or straps within 40 .
(1) Cable or strap (A) 40 or less
(B) 4410 mm (173.6 in.) [Standard blade type] 4000 mm (157.5 in.) [Angle blade type] (C) 2200 mm (86.6 in.) [Standard blade type] 1780 mm (70 in.) [Angle blade type]
3. Tackle The weights of the excavators and the recommended tackle for lifting these loads are mentioned in the following table. Choose components having enough strength.
Standard blade Angle blade
Excavator Weight*
4300 kg
(9480 lbs)
4460 kg
(9835 lbs) Load / Cable 1550 kN (3487 lbf) Minimum Wire Diameter
(Safety factor=6)
16 mm (5/8 in.) or more
*Excavator Weight: With CAB, steel tracks. Steel wire: 6X24
4. Lifting (1) Lift slowly and safely (2) Do not enter the excavator area when lifting. (3) Lift the excavator horizontally. (Modify cable or
strap connections according to needs)
A While lifting, carefully keep the machine well balanced
with its center of gravity in mind.
A Do not lift the machine with the boom swinging or the
upper structure swiveling.
Maximum strength for example: (JIS G3525: 2006 or ISO 4344: 2004) ­"6X24"
Diameter zinc-plated not zinc-plated
14 mm
(9/16)
16 mm
(5/8)
18 mm
(45/64) 20 mm
(3/4)
22.4 mm (-)
89.7 kN (20165 lbf) 96.6 kN (21717 lbf)
117 kN (26303 lbf) 126 kN (28326 lbf)
148 kN (33272 lbf) 160 kN (35969 lbf)
183 kN (41140 lbf) 197 kN (44287 lbf)
230 kN (51706 lbf) 247 kN (55528 lbf)
Page 82
58 MAINTENANCE

MAINTENANCE

MAINTENANCE INTERVALS

No. Check points Measures
1 Coolant
2 Fuel check Daily check 65
3 Engine oil
4 Hydraulic oil
Bucket and bucket link pin / Dozer angle
Grease front
5
attachments
6 Radiator and oil cooler check Daily check 67 7 Washer liquid check D aily check 68
8 Engine and electrical wiring check Daily check 68
9 Fuel tank, Water separator drain every 50 hrs 70 10 Battery condition check every 50 hrs 71 11 Greasing swing bearing teeth - every 50 hrs 72
12 V-belt tension
13 Radiator hoses and clamps
Air filter
14
element
15 Greasing swing ball bearing - every 200 hrs 74 16 Evacuator valve clean every 2 00 hrs 75 17 DPF muffler check every 200 hrs 75 18 Fuel filter cartridge replace every 500 hrs 79 @ 19 Engine oil filter replace every 500 hrs 78 20 Drive unit oil change every 500 hrs 78 21 Breather filter replace every 500 hrs 79 22 Hydraulic return filter element repl ace every 1000 hrs 80 23 Hydraulic suction filter element replace every 1000 hrs 80 24 Filter in the pilot hydraulic system replace every 1000 hrs 79 25 Injector tip check every 1500 hrs 82 *4 @ 26 Oil separator element replace every 1500 hrs 82 @ 27 EGR cooler check every 1500 hrs 83 *4 @ 28 Alternator and starter motor check every 2000 hrs 83 29 EGR system check every 3000 hrs 83 *4 @ 30 Turbo charger check every 3000 hr s 83 *4 @
pin and angle cylinder boss
Boom swing fulcrum - Daily check 69 Others - Daily check 68
Outer element
Inner element replace every 1000 hrs 82 *2
check Daily check 65 change every 2 years 84
check Daily check 66 change every 500 hrs 77 check Daily check 66 change every 1000 hrs 80 *1
check Daily check 67 adjust every 200 hrs 73 replace every 500 hrs 79 check every 200 hrs 74 replace every 2 years 84 clean every 200 hrs 74 *2 replace every 1000 hr s 82 *2
50 100 150 200 250 300 350 400 450 500
- Daily check 68
Hour meter indicator
Interval
Ref.
page
@
Page 83
59MAINTENANCE
No. Check points Measures
31 DPF clean every 3000 hrs 83 *4 @
Exhaust manifold (crack, gas,
32
leakage and mounting screw)
33 Intake air line for air leaks check every 1 years 83 *4
Boost sensor and AFS (Air flow
34
sensor)
35 Condition of DPF muffler check every 1 years 83 *4
DPF differential pressu re pipes and
36
hoses DPF exhaust gas temperature
37
sensor 38 EGR and piping for gas leak check every 1 years 83 *4 39 Radiator system rinse every 2 years 84
40 Fuel line and Intake air lin e
41 Oil separator rubber hose replace every 2 years 86 *4
DPF differential pressure sensor
42
rubber piping (Front and back)
Suction pipe downstream the AFS
43
(Air flow sensor) 44 Boost sensor pressure rubber piping replace every 2 years 86 *4 45 EGR cooler hose replace every 2 years 86 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 200 hrs 76 replace every 2 years 86 *3
replace every 2 years 86 *4
replace every 2 years 86 *4
50 100 150 200 250 300 350 400 450 500
Hour meter indicator
Interval
Ref.
page
@
D 550 thru 3000 continued to the following table.
Page 84
60 MAINTENANCE
No. Check points Measures
1 Coolant
2 Fuel check Daily check 65
3 Engine oil
4 Hydraulic oil
Bucket and bucket link pin / Dozer angle
Grease front
5
attachments
6 Radiator and oil cooler check Daily check 67 7 Washer liquid check D aily check 68
8 Engine and electrical wiring check Daily check 68
9 Fuel tank, Water separator drain every 50 hrs 70 10 Battery condition check every 50 hrs 71 11 Greasing swing bearing teeth - every 50 hrs 72
12 V-belt tension
13 Radiator hoses and clamps
Air filter
14
element
15 Greasing swing ball bearing - every 200 hrs 74 16 Evacuator Valve clean ever y 200 hrs 75 17 DPF Muffler check every 2 00 hrs 75 18 Fuel filter cartridge replace every 500 hrs 79 @ 19 Engine oil filter replace every 500 hrs 78 20 Drive unit oil change every 500 hrs 78 21 Breather filter replace every 500 hrs 79 22 Hydraulic return filter element replace every 1000 hrs 79 23 Hydraulic suction filter element replace every 1000 hrs 80 24 Filter in the pilot hydraulic system replace every 1000 hrs 79 25 Injector tip check every 1500 hrs 82 *4 @ 26 Oil separator element replace every 1500 hrs 82 @ 27 EGR cooler check every 1500 hrs 83 *4 @ 28 Alternator and starter motor check every 2000 hrs 83 29 EGR system check e very 3000 hrs 83 *4 @ 30 Turbo charger check every 3000 hrs 83 *4 @
pin and angle cylinder boss
Boom swing fulcrum - Daily check 69 Others - Daily check 68
Outer element
Inner element replace every 1000 hrs 82 *2
check Daily check 65 change every 2 years 84
check Daily check 66 change every 500 hrs 77 check Daily check 66 change every 1000 hrs 80 *1
check Daily check 67 adjust every 200 hrs 73 replace every 500 hrs 79 check every 200 hrs 74 replace every 2 years 84 clean every 200 hrs 74 *2 replace every 1000 hrs 82 *2
550 600 650 700 750 800 1000 1500 3000
- Daily check 68
Hour meter indicator
Interval
Ref.
page
@
Page 85
61MAINTENANCE
No. Check points Measures
31 DPF clean every 3000 hrs 83 *4 @
Exhaust manifold (crack, gas,
32
leakage and mounting screw)
33 Intake air line for air leaks check every 1 years 83 *4
Boost sensor and AFS (Air flow
34
sensor)
35 Condition of DPF muffler check every 1 years 83 *4
DPF differential pressure pipes and
36
hoses DPF exhaust gas temperature
37
sensor 38 EGR and piping for gas leak check every 1 years 83 *4 39 Radiator system rinse every 2 years 84
40 Fuel line and Intake air lin e
41 Oil separator rubber hose replace every 2 years 86 *4
DPF differential pressure sensor
42
rubber piping (Front and back)
Suction pipe downstream the AFS
43
(Air flow sensor) 44 Boost sensor press ure ru bber pipi ng replace every 2 years 86 *4 45 EGR cooler hose replace every 2 years 86 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 1 years 83 *4
check every 200 hrs 76 replace every 2 years 86 *3
replace every 2 years 86 *4
replace every 2 years 86 *4
550 600 650 700 750 800 1000 1500 3000
Hour meter indicator
Interval
Ref.
page
@
Page 86
62 MAINTENANCE
C Air-conditioner
No. Check points Measures
1 Air filter
2 Air conditioner condenser clean every 200 hrs 77
3 Air conditioner pipes and hoses
4 Refrigerant (gas ) check
clean every 200 hrs 76 *2 replace every 1000 hrs - *2
check every 1 year 83 replace every 2 years 84
50 100 150 200 250 300 350 400 450
Hour meter indicator
Interval
service as
required
Ref.
page
86
No. Check points Measures
1 Air filter
2 Air conditioner condenser clean every 200 hrs 77
3 Air conditioner pipes and hoses
4 Refrigerant (gas ) check
clean every 200 hrs 76 *2 replace every 1000 hrs - *2
check every 1 year 83 replace every 2 years 84
500 550 600 650 700 750 800 1000
Hour meter indicator
Interval
service as
required
Ref.
page
86
First operation
*1 When using a hydraulic hammer, change hydraulic oil and return filter according to the table on "Hydraulic Oil Change (Including Exchange of the Suction Filter in the Hydraulic Tank) under "EVERY 1000 SERVICE HOURS" in the chapter "REGULAR CHECKS AND MAINTENANCE WORK". *2 Clean and replace the air filter more frequently if used under dusty conditions. When the filter is very dirty from dusty conditions, replace the filter. *3 Replace only if necessary. *4 Consult your local KUBOTA dealer for this service. A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA non-
road emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction. Please see the warranty Statement in detail.
Page 87
63MAINTENANCE

OPENING AND CLOSING OF COVERS

BOpening/Closing of the Engine Hood
To avoid personal injury: A Do not open the engine hood with the engine
running unless in an emergency.
A Do not touch the exhaust muffler or the
exhaust pipe; serious burns can occur.
Insert the key into the key slot and turn it clockwise to unlock it. And pull the catch to open the hood. To close the hood, push down it until it locks automatically. Turn the key counterclockwise to lock the hood.
BOpening/Closing of the Side Cover
1. Insert the starter key in its hole and turn it clockwise to unlock the side cover. Pull the catch, and hold up the side cover until the gas spring fixture stay gets locked.
2. To close the side cover, hold it up a little more, and pull the gas spring fixture stay to get it unlocked. Lower the side cover until it clicks into its closed position.
3. Turn the starter key counterclockwise to get the side cover locked.
(1) Engine hood (2) Catch (3) Key hole
(1) Side cover (2) Catch
(1) Stay
Page 88
MAINTENANCE64
BWhere to store the Tool
The tool box is located in front of the right side bonnet.
(1) Box for storage
BCup Holder
BWhere to store the Grease Gun
The grease gun is located in front of the right side bonnet.
(1) Grease gun
Take note storage direction of greased gun in above illustration.
BWhere to keep Operator's Manual
(1) Cup holder
(1) Operator's manual storage (2) Rear cover
Page 89
65MAINTENANCE

DAILY CHECKS

To avoid personal injury: A When operating, keep hands and body inside
of the ROPS / FOPS protective envelope.
A Do not touch the control levers and the pedals
from outside the cab during the engine running.
For your own safety and to assure the long life of your machine, a careful check should be made before each operation.
BChecking Coolant Level
To avoid personal injury:
A Move the excavator to even ground. A Make sure that the engine is turned off. A Do not open the radiator cap right after the
engine has been stopped; Serious burns can occur from contact with escaping hot coolant fluid.
A Check the coolant level in the recovery tank
only after the engine has cooled down.
A Remove the radiator cap only if absolutely
necessary.
A Do not fill the recovery tank over the "FULL" marking. A Do not fill with dirty or salty water.
BChecking Fuel Level
To avoid personal injury:
A Stop the engine and remove the key before fuelling. A Do not smoke while fuelling.
A By temperatures over -5 , use No.2-D diesel fuel,
when temperatures are under -5 , use No.1-D diesel fuel.
A Make sure that the fuel tank is not run empty. Air will
enter the fuel system, and must be purged before restarting.
A See "PURGING OF THE FUEL SYSTEM" in "OTHER
ADJUSTMENTS AND REPLACEMENTS"
A To prevent condensation (water) accumulations in the
fuel tank, fill the fuel into the tank before parking overnight.
1. Check the fuel level by the fuel level indicator.
The radiator has a recovery tank. Should the coolant level in the radiator sink, the water will be automatically be forwarded to the radiator. Open the side cover. (See "Opening / Closing of the Side Cover" in "OPENING AND CLOSING OF COVERS" section.) Check the coolant level in the recovery tank and fill up if necessary. The coolant level should be between the marks "FULL" and "LOW".
(1) Fuel gauge (A) "EMPTY"
(B) "FULL"
2. If necessary, open the cap and fill in fuel. (See "LCD Display for Normal Operation" in "CHECK BEFORE START" section.)
Fuel tank capacity 64 L (16.9 US gal)
(1) Recovery tank (A) "FULL"
(B) "LOW"
Page 90
MAINTENANCE66
BChecking Engine Oil Level
To avoid personal injury: A Stop the engine and remove the key before
checking the oil level.
A Use engine oil with the correct viscosity. (according to
the outside temperature)
A After stopping the engine and remove the key, wait five
minutes, then check oil level. (Excavator must be on level ground.)
Insert the engine oil dipstick fully into the prepared opening, remove again and check the oil level; if necessary fill with oil. The machine must be on level ground when checking the oil level.
(1) Engine oil dipstick (2) Oil filling port
(A) Required oil level range
BChecking Hydraulic Oil Level
2. Check the oil level as to whether it lies on the center of the gauge at normal temperature (10 to 30 (50 to 80 )).
3. Enough oil is present when oil is at center mark.
4. Should the oil level be too low, loosen the oil filling plug gradually to release pressure in the tank, then fill up with oil at oil fill port.
(1) Gauge
To avoid personal injury: A Stop the engine and remove the key before
checking the oil level.
A Before filling oil, wipe away all sand and dust from
around the oil port. Make sure to use an identical type of hydraulic fluid.
A The excavator has been filled with hydraulic fluid
before delivery. See "RECOMMENDED OILS". (Do not mix different oils.)
1. Park the excavator on a firm, flat and level surface. Lower the attachments and dozer blade to the ground and stop the engine.
(1) Gauge (2) Oil filling plug
Page 91
BChecking V-belt
To avoid personal injury: A Stop the engine and remove the key before
checking the V-belt.
A Check the V-belt for cracks and proper tension.
(See "Adjusting V-belt Tension" in "REGULAR CHECKS AND MAINTENANCE WORK" section.)
BChecking Radiator and Oil Cooler
To avoid personal injury; A Always stop the engine and remove the key
before checking the radiator.
A Wear eye protection when cleaning with
compressed air.
A Replace all water hoses every two years. A Inspect all water hoses daily.
Have the excavator repaired immediately if any of the following defects are discovered. (Such defects may cause burns or injury. They may also cause engine failure or serious engine damage.) A Scratches, cracks or swelling in water
hoses.
A Water leaks at joints or connecting points. A Missing or damaged water hose protective
sleeve or grommet.
A Loose mounting bolt, damaged bracket.
A Do not touch the water hoses or the heater with
your hand. You may get burned.
A If the window fails to defrost in extreme
conditions or becomes cloudy when dehumidifying the CAB, remove moisture with soft cloth.
A Never block all of the air outlets, system
malfunction may occur.
1. Check to see if the fins are clogged with dirt. If so, remove the dirt using compressed air or a hose. When cleaning, wear eye protection.
2. Check the rubber hoses for damage and replace if cracked or old. Check if the hose clamps are tight enough.
67MAINTENANCE
(1) Radiator (2) Oil cooler
(1) Hose clamp (2) Rubber hose
A Radiator and oil cooler fins and ribs must be clean in
order to avoid overheating the engine and to allow free flow of air through the cooling elements.
A Pressure of compressed air must be under 205 kPa
(2.1 kgf.cm , 30 psi)
Page 92
MAINTENANCE68
BChecking Washer Liquid
If the windows washer is switched on with the washer liquid tank empty, the motor may be damaged. Always keep the tank filled.
(1) Washer liquid tank
BGreasing Front Attachments (without
Bucket Pin and Boom Swing Fulcrum)
To avoid personal injury: A First lower all attachments on the ground then
stop the engine and remove the key.
A While greasing, take care not to step on the
bucket teeth.
A When doing excavation work in water, generously
grease the following points. After ending work, grease again.
Grease the marked grease nipples shown by arrows in the illustration below.
BChecking and Cleaning Engine and
Electrical Wiring
To avoid personal injury: A Always stop the engine and remove the key
before cleaning the wiring, cables and engine.
Before starting, check whether flammable substances have gathered on the battery, the cables and wiring, the muffler or on the engine. Remove thoroughly. Check the electrical circuitry for disconnections, shorts or loose terminals.
BWashing Whole Machine
A Do not wash the excavator with the engine running.
Water could enter the air filter and damage the engine. Make sure that the air filter is kept dry.
A Remove the mud before washing the machine.
(1) Boom bottom linkage (2) Arm bottom linkage (3) Boom cylinder boss (4) Arm cylinder boss (5) Bucket cylinder boss
(1) Swing cylinder boss
Page 93
(1) Dozer cylinder boss (2) Dozer linkage pin
69MAINTENANCE
BGreasing Bucket Pin
Grease the marked grease nipples shown by arrows in the illustration below.
BGreasing Boom Swing Fulcrum
Grease the marked grease nipples shown by arrows in the illustration below.
(1) Angle pin (2) Angle cylinder boss
Page 94
70 REGULAR CHECKS AND MAINTENANCE WORK

REGULAR CHECKS AND MAINTENANCE WORK

BDraining Water Separator
To avoid personal injury: A When operating, keep hands and body inside
of the ROPS / FOPS protective envelope.
A Do not touch the control levers and the pedals
from outside the cab during the engine running.

EVERY 50 SERVICE HOURS

BDraining Fuel Tank
To avoid personal injury: A Before draining the fuel tank, be sure to stop
the engine and remove the key.
A Do not smoke during inspection.
[Checking and Draining]
Water and dirt contained in fuel will settle down in the water separator. When such foreign substances are deposited, set the water separator handle to the "CLOSE" position. Loosen the top screw first and then the bottom cock to let the foreign substances out of the separator. Finally be sure to air-bleed the fuel system.
[Cleaning]
1. Set the water separator handle to the "CLOSE" position.
2. Loosen and remove the cup proper, and clean its inside with light oil.
3. Tighten up the cup proper.
1. Insert the key slot and open the cover.
2. Open the drain cock.
(1) Cover (2) Drain cock
(A) Open (B) Close
(1) Screw (2) Cup (3) Water separator handle (4) Line (5) Float (6) Cock
A As water is collected, the red float goes up.
When the float has reached the specified line, immediately drain the water separator.
A In reattaching the water separator, be careful to keep
off dust and dirt.
A Be sure to purge the fuel system before getting the
machine restarted. (See "PURGING OF THE FUEL SYSTEM" in
"OTHER CHECKS AND REPLACEMENTS"
section.)
(A) "CLOSE" (B) Loosen (C) Tighten
Page 95
71REGULAR CHECKS AND MAINTENANCE WORK
BChecking Battery Condition
To avoid the possibility of a battery explosion: For refillable type battery, follow the instructions below. A Do not use or charge the refillable type battery
if the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion. Check the fluid level regularly and add distilled water as required so that the fluid level is between the UPPER and LOWER levels.
To avoid personal injury: A Never remove the vent caps while the engine is
running.
A Keep electrolyte away from eyes, hands and
clothes. If you are spattered with it, wash it away completely with water immediately and get medical attention.
A Wear eye protection and rubber gloves when
working around the battery.
A Before inspection or dismounting the battery,
be sure to turn off the engine and turn the starter switch to the "OFF" position.
A When removing the battery, always disconnect
the negative ground cable first. When installing a battery, always connect the ground cable last. This prevents a possible explosion caused by sparks.
A Always wear eye protection when working with
the battery.
The factory-installed battery is of non-refillable type. If the indicator turns white, do not quick charge the battery but replace it with new one.
Mishandling the battery shortens the service life and adds to maintenance costs. The original battery is maintenance free, but needs some servicing. If the battery is weak, the engine will be difficult to start and the lights will be dim. It is important to check the battery periodically.
(1) Battery (2) Indicator
C How to read the indicator
Check the battery condition by reading the indicator.
State of indicator display
Green
Black Needs charging battery.
Specific gravity of electrolyte and quality of electrolyte are both in good condition.
(A) "Upper level" (B) "Lower level"
White Needs replacing battery.
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REGULAR CHECKS AND MAINTENANCE WORK72
C Battery Charging
To avoid personal injury: A When the battery is being activated, hydrogen
and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery.
A When charging the battery, ensure the vent
caps are securely in place. (if equipped)
A When disconnecting the cable from the battery,
start with the negative terminal first. When connecting the cable to the battery, start with the positive terminal first.
A Never check battery charge by placing a metal
object across the posts. Use a voltmeter or hydrometer.
1. To slow charge the battery, connect the battery positive terminal to the charger positive terminal and the negative to the negative, then recharge in the standard fashion.
2. A boost charge is only for emergencies. It will partially charge the battery at a high rate and in a short time. When using a boost-charged battery, it is necessary to recharge the battery as early as possible. Failure to do this will shorten the battery's service life.
3. The battery is charged if the indicator display turns green from black.
4. When exchanging an old battery for a new one, a battery of equal specification.
Battery Type Volts (V) Capacity
GP24(90D26L) 12 52 (at 5H.R(A.H))
Reserve
Battery Type
GP24(90D26L) 125 680 6.5
C Direction for Storage
1. When storing the machine for long periods of time, remove the battery from machine, adjust the electrolyte to the proper level and store in a dry place out of direct sunlight.
2. The battery self-discharges while it is stored. Recharge it once every three months in hot seasons and once every six months in cold seasons.
Capacity
(min)
Cold
Cranking
Amps
Normal
Charging
Rate (A)
(1) Battery
BGreasing Swing Bearing Teeth
1. Pump grease with the grease gun through the grease nipple.
2. Grease at each 90 (1.58 rad.) position of the swing frame.
3. Fill with approx. 50g of grease (approx. 20 to 30 pumps with the grease gun at each position). Distribute the grease over the teeth.
(1) Grease nipple (for swing bearing teeth)
Page 97

EVERY 200 SERVICE HOURS

Do all 50 and 100 hour servicing at the same time.
BAdjusting V-belt Tension
To avoid personal injury:
A First stop the engine and remove the key. A After servicing, make sure to replace the belt
cover in its original position.
C Checking and adjustment of the air-conditioner
belt tension
1. Press the air-conditioner belt down in the middle, with a force of approx. 6 to 7 kgf (13.2 to 15.4 lbs). The belt tension is correct if it deflects about 12 to 15 mm (0.47 to 0.59 in.). If otherwise, loosen the nut (5) and tighten the bolt (6) ,then shift the tension pulley in the direction shown by the arrow.
2. Replace the air-conditioner belt if worn out, cracked or torn.
73REGULAR CHECKS AND MAINTENANCE WORK
C Checking and adjustment of the fan belt tension
1. Press the fan belt down in the middle, with a force of approx. 3.6 to 5.1 kgf (7.9 to 11.2 lbs). The belt tension is correct if it deflects about 7 to 9 mm (0.27 to 0.35 in.). If otherwise, loosen bolt and shift the alternator in the direction shown by the arrow.
2. Replace the fan belt if worn out, cracked or torn.
(1) Fan belt (2) Alternator (3) Pulley (4) Fan pulley (5) Bolt and nut
(A) 7 to 9 mm (0.27 to 0.35 in.)
(1) Air-conditioner belt (2) Tension pulley (3) Air-conditioner compressor (4) Pulley (5) Nut (6) Bolt
A If the engine is run with a loose fan belt, the belt could
slip and cause overheating of the engine. Check fan belt tension regularly.
A If the engine is run with a loose fan belt, the belt could
slip and cause insufficient battery charging. Check fan belt tension regularly.
A Should the fan belt break or jump off, the indicator light
for battery charge will light up. Stop the engine and remove the key immediately.
(A) 12 to 15 mm (0.47 to 0.59 in.)
Page 98
REGULAR CHECKS AND MAINTENANCE WORK74
BChecking Radiator Hoses and Clamps
To avoid personal injury: A Wait long enough for the radiator coolant to
cool down.
BInspection and Cleaning Air Filter Element
Open the engine hood and remove the dust-cover. Take out only outer element, clean the element, case interior and reassemble. During reassembly, take care to install the dust-cover so that its TOP mark (arrow) faces up­wards. Do not remove the inner element.
Check the coolant hoses for proper connection. This check should be carried out every 200 hours or every 6 months, whichever comes first.
1. Should the hose clamps become loose or coolant leaks, tighten the hose clamps properly.
2. Should the radiator hoses become swollen, aged or cracked, they must be replaced and the hose clamps tightened again properly.
(1) Hose clamp (2) Radiator hose
A Should the machine be used in extremely dusty areas,
the air filter element must be inspected and cleaned more frequently than in the specified maintenance periods.
A The air filter has a dry element, keep free from oil. A Do not run the engine without the air filter.
(1) Inner element (2) Outer element (3) Dust-cover (4) Clamps
BGrease Swing Ball Bearing
1. Grease through the respective grease nipple. (at the central nipple)
2. Grease at each 90 (1.58 rad.) position of the swing frame.
(1) Grease nipple
Page 99
75REGULAR CHECKS AND MAINTENANCE WORK
BAir Filter Maintenance
To avoid personal injury: A Wear eye protection.
The quickest and safest method of maintenance is the exchange of the paper cartridge. Furthermore there are different methods of cleaning the cartridge.
BCleaning Evacuator Valve
Open the evacuator valve to get rid of large particles of dust and dirt.
(1) Evacuator valve
BChecking Diesel Particulate Filter (DPF)
Muffler
C Cleaning with compressed air
Pressure of compressed air must be under 205 kPa (2.1 kgf/ , 30 psi), and the cartridge should be blown clean from the inside to the outside until the dust deposits are noticeably reduced.
A If the air suction is still inadequate, or the color of the
exhaust gases is abnormal even after the cleaning, the air filter cartridge must be replaced.
To avoid personal injury: A Before checking or cleaning the DPF muffler,
stop the engine and wait long enough until it is cooled down.
Check to see if nothing flammable is deposited around the DPF muffler. Otherwise a fire may result.
(1) DPF muffler
Page 100
REGULAR CHECKS AND MAINTENANCE WORK76
BChecking Fuel Line and Intake Air Line
1. Check to see that all lines and hose clamps are tightened and not damaged.
2. If hoses and clamps are found worn or damaged, replace or repair them at once.
(1) Fuel lines (2) Clamp bands

AIR CONDITIONER

BCleaning Air Filter
Open the cover and remove the filter cover, remove the air filter.
(1) Air filter
To avoid personal injury: A Wear eye protection.
(1) Hoses (2) Hose clamps
C Cleaning the air filter A Normal use
Blow air from the opposite direction to the filter's normal air flow.
A Do not hit the filter. If the filter becomes deformed, dust
may enter into the air-conditioner, which may cause damage and malfunction.
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