Kubota KX057-4 User manual


 
    
Abbreviations Definitions
API
ASTM
CECE
DIN
EN
FOPS
FRONT
Hi
ISO
JIS
L
L/min
Lo
MIL
rpm
ROPS
SAE
TPSS
AI
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
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
Society of Automotive Engineers, USA
Two Pattern Selection System
Auto Idle
ABBREVIATION LIST


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
Grease
Fast
Slow
Excavator - Overhead movement toward the front
Excavator - Overhead movement toward the rear
Boom raise
Boom lower
Arm out
Arm in
Bucket crowd
Bucket dump
Boom swing (Left)
Boom swing (Right)
Dozer raise
Dozer lower
Operation direction of control lever
Operation direction of control lever
Read operator’s manual
Lock
Unlock
Engine stop control lamp
GENERAL SYMBOLS
The instruments and operation elements have been marked with a series of symbols in order to simplify the opera-
tion of your excavator. These symbols are listed below with the respective descriptions.

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 the
fine materials and under rigid quality control systems. 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 quick 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outdated.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 illustrations in the instructions.
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.
DANGER : Indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
injury.
WARNING : Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious
injury.
CAUTION : Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate
injury.
IMPORTANT : Indicates that equipment or property damage
could result if instructions are not followed.
NOTE : Gives helpful information.
SAFETY FIRST

CONTENTS
SAFE OPERATION ................................................................................................. 1
DEALER SERVICE...................................................................................................... 1
TECHNICAL DATA...................................................................................................... 2
DESCRIPTION OF MACHINE PARTS........................................................................ 4
INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 5
CHECKS BEFORE START......................................................................................... 7
DAILY CHECKS....................................................................................................... 7
CHECKING THE DEVICES..................................................................................... 7
Starter Switch ...................................................................................................................7
Display Selector Switch....................................................................................................8
LCD Display for Normal Operation...................................................................................9
Warning Lamp ................................................................................................................12
LCD Display for Warning................................................................................................12
Setting the Clock.............................................................................................................14
Reordering the year/month/day and Changing the AM/PM System to the 24-hour One15
Log Record.....................................................................................................................16
Periodic Check................................................................................................................17
If All the Check Points are not Displayed at a Glance on a Single Screen.....................18
When the Check-up is Finished......................................................................................20
Horn Switch ....................................................................................................................20
Working Light Switch......................................................................................................20
Auto Idle Switch..............................................................................................................21
Throttle Potentiometer....................................................................................................21
Travel Speed Switch.......................................................................................................21
Overload Warning Switch...............................................................................................22
AUX Port Flow Rate Limit Switch ...................................................................................22
CAB TYPE MACHINES ......................................................................................... 23
Wiper/Washer Switch .....................................................................................................23
Interior Lamp...................................................................................................................23
Cab Light Switch.............................................................................................................23
Heater Switch .................................................................................................................23
Opening/Closing of CAB Door........................................................................................24
Opening/Closing of Front CAB Window..........................................................................24
Opening/Closing of Side CAB Window...........................................................................25
Emergency Hammer.......................................................................................................25
AIR CONDITIONER............................................................................................... 25
Air Flow...........................................................................................................................25
Air Control Vent ..............................................................................................................26
Control Panel..................................................................................................................27
Operation........................................................................................................................27
HANDLING THE SAFETY DEVICES..................................................................... 28
Pilot Control Lock Lever..................................................................................................28
OPERATION OF THE ENGINE................................................................................. 29
STARTING THE ENGINE...................................................................................... 29

CONTENTS
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 31
STARTING WITH AN AUXILIARY BATTERY ....................................................... 31
Observe Following Guidelines when Starting with an Auxiliary Battery..........................31
CHECK POINTS AFTER STARTING THE ENGINE............................................. 32
STOPPING THE ENGINE...................................................................................... 33
Engine Stop Button.........................................................................................................33
Precautions in case of Overheat.....................................................................................33
EXCAVATOR OPERATION ...................................................................................... 34
RUNNING-IN OF THE NEW EXCAVATOR........................................................... 34
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..34
Oil Change in the Run-in Stage......................................................................................34
Adjusting the Operator's Seat.........................................................................................34
Seat Belt.........................................................................................................................35
STARTING............................................................................................................. 35
Pilot Control Lock Lever..................................................................................................35
DRIVING................................................................................................................ 36
Drive Levers(Right,Left)..................................................................................................37
TURNS................................................................................................................... 38
Pivot Turn .......................................................................................................................38
Spin Turn........................................................................................................................39
UP AND DOWNHILL DRIVING.............................................................................. 39
PARKING ON A SLOPE........................................................................................ 40
OPERATION OF THE DOZER.............................................................................. 40
TWO PATTERN SELECTION SYSTEM(TPSS).................................................... 41
Pattern Change...............................................................................................................41
OPERATION OF THE BOOM................................................................................ 42
OPERATION OF THE ARM................................................................................... 42
OPERATION OF THE BUCKET............................................................................ 43
UNIT SWING AND BOOM SWING OPERATION.................................................. 43
Unit Swing Operation......................................................................................................43
Boom Swing Operation...................................................................................................44
AUXILIARY PORT OPERATION........................................................................... 45
Selecting the Action Modes............................................................................................45
AUX Port Handling Procedure........................................................................................46
Setting the Maximum Flow Volume................................................................................48
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 53
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION............................... 54
AUTO IDLE (AI) OPERATION............................................................................... 55
IMPORTANT INFORMATION ON EXCAVATOR OPERATION............................ 55
TRANSPORTING THE EXCAVATOR ON A VEHICLE............................................. 56
LIFTING OF THE EXCAVATOR................................................................................ 58
MAINTENANCE......................................................................................................... 60
MAINTENANCE INTERVALS................................................................................ 60
OPENING AND CLOSING OF PARTS.................................................................. 63
Opening/Closing of the Engine Hood.............................................................................63
Opening/Closing of the Side Cover................................................................................63
Where to store the Tool..................................................................................................64
Where to store the Grease Gun......................................................................................64

CONTENTS
Where to keep Operator's Manual..................................................................................65
Cup Holder......................................................................................................................65
DAILY CHECKS..................................................................................................... 65
Checking Coolant Level..................................................................................................65
Checking Fuel Level.......................................................................................................66
Checking Engine Oil Level..............................................................................................66
Checking Hydraulic Oil Level..........................................................................................67
Checking V-belt ..............................................................................................................67
Checking Radiator and Oil Cooler..................................................................................68
Checking Washer Liquid.................................................................................................68
Cleaning Pre-Cleaner.....................................................................................................69
Checking and Cleaning Engine and Electrical Wiring.....................................................69
Washing Whole Machine................................................................................................69
Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)................69
Greasing Bucket Pin and Bucket Link Pin......................................................................70
Greasing Boom Swing Fulcrum......................................................................................70
REGULAR CHECKS AND MAINTENANCE WORK ................................................. 71
EVERY 50 SERVICE HOURS............................................................................... 71
Draining Fuel Tank .........................................................................................................71
Draining Water Separator...............................................................................................71
Battery ............................................................................................................................72
Battery Charging.............................................................................................................73
Greasing Swing Bearing Teeth.......................................................................................73
EVERY 200 SERVICE HOURS............................................................................. 74
Adjusting V-belt Tension.................................................................................................74
Checking Radiator Hoses and Clamps...........................................................................75
Inspection and Cleaning Air Filter Element.....................................................................75
Air Filter Maintenance.....................................................................................................76
Greasing Swing Ball Bearing..........................................................................................76
Checking Fuel Line and Intake Air Line..........................................................................77
AIR CONDITIONER............................................................................................... 77
Cleaning Air Filter...........................................................................................................77
Checking Air-Conditioner Condenser.............................................................................78
EVERY 250 SERVICE HOURS............................................................................. 78
Changing Engine Oil(First Engine Oil Change after 50 Service Hours) .........................78
Replacing Engine Oil Filter.............................................................................................79
EVERY 500 SERVICE HOURS............................................................................. 79
Drive unit Oil Change(First Oil Change of the 50 hours)................................................79
Replacing Fuel Filter Cartridge.......................................................................................80
Replacing Breather Filter................................................................................................80
EVERY 1000 SERVICE HOURS........................................................................... 80
Replacing the Hydraulic Pilot Filter Element...................................................................80
Replacing Hydraulic Return Filter Element.....................................................................81
Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 81
Hydraulic Oil Check with Hydraulic Hammers................................................................82
EVERY 1000 SERVICE HOURS OR ONCE A YEAR........................................... 83
Replacing Air Filter Element...........................................................................................83
EVERY 1500 SERVICE HOURS........................................................................... 83
Checking Fuel Injection Nozzle(Injection Pressure).......................................................83
EVERY 2000 SERVICE HOURS........................................................................... 83
Changing Front Idler and Track Roller Oil......................................................................83

CONTENTS
Checking the Alternator and Starter Motor.....................................................................83
EVERY 3000 SERVICE HOURS........................................................................... 83
Checking Injection Pump................................................................................................83
ANNUAL SERVICING............................................................................................ 83
Electrical Wiring and Fuses............................................................................................83
Checking the Electrical Circuit........................................................................................83
Checking Air-Conditioner Pipes and Hoses....................................................................83
BIENNIAL SERVICING.......................................................................................... 84
Replacing Air-Conditioner Pipes and Hoses...................................................................84
Replacement of Radiator Hoses.....................................................................................84
Changing Radiator Coolant ............................................................................................84
Replacing Fuel Hose ......................................................................................................85
Replacing Intake Air line.................................................................................................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
LONG STORAGE...................................................................................................... 95
RECOMMENDED OILS............................................................................................. 97
APPENDICES............................................................................................................ 98
MAIN DIMENSIONS .............................................................................................. 98
LIFTING CAPACITY.................................................................................................. 99
LIST OF SCREENS................................................................................................. 108
LIST OF NORMAL SCREENS............................................................................. 108
NAVIGATION LIST OF SCREENS...................................................................... 109

1SAFE OPERATION
SAFE OPERATION
Careful operation is your best insurance against an
accident.
Read and understand this section carefully, before
operating the excavator.
Every user, however experienced, should carefully read
and understand this section 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 place. (See "Where to
keep Operator's Manual" in "MAINTENANCE" section.)
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.
Do not modify any structural members of the ROPS 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 is loosened or removed for any reason, make
sure all parts are reinstalled correctly. Tighten
mounting bolts to proper torque.
4. Include ROPS/ FOPS structure compliance to
standards ISO 3471 and ISO 3449 complies with
OSHA regulations.
5. The seat belt must be inspected regularly and
replaced if frayed or damaged.
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.
AEngage the lever lock to prevent accidental pattern
change.
8. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.
1. BEFORE OPERATION
(1) Seat belt
(1) Pattern selector lever
(Two Pattern Selection System:TPSS)
(2) Lever lock
(A) "Pattern A"
(B) "Pattern B"

SAFE OPERATION2
9. Check the surroundings carefully before using the
excavator or when attachments are being attached.
APay attention to the overhead clearance with electric
wires.
ACheck for pipes and buried cables before digging.
ACheck for hidden holes, obstacles, soft underground,
and overhangs.
ADo not allow any persons within the working range of
the excavator during operation.
ACheck local regulation before digging and call diggers
hotline before working, www.diggershotline.com or
811 (WI) and www.ne-diggers.com or 1-800-331-5666
(NE).
10.Do not allow anyone to use the excavator until they
have been informed of the work to be performed and
they have medicated that they have read and
understood the operator's manual.
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.
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, otherwise 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 that objects may fall or be thrown.
(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

3SAFE OPERATION
1. Mount and dismount of 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.
5. Do not operate or idle engine in a non-ventilated area.
Carbon monoxide gas is colorless, odorless, and
deadly.
6. Keep all safety equipment and covers in place.
Replace damaged or missing safety devices.
7. When operating, keep hands and body inside of the
ROPS / FOPS protective.
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.
CSafety 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.
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 falloff 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
afirm,flatandlevel surface;ifnot, park acrossaslope.
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.
2. OPERATING THE EXCAVATOR

SAFE OPERATION4
Before leaving the machine,
APark the excavator on a firm, flat and level surface. If
this is not possible, park across the slope.
ALower the attachments and the dozer blade to the
ground.
AStop the engine.
ARelease pressure in the hydraulic system.
ALock all control levers.
ARemove the key.
ALock the cab door (if equipped)
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.
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. Not to be used for tie down or
lifting of the machine.
3. AFTER OPERATION
(1) Pilot control lock lever (A) "Unlock"
(B) "Locked"
4. SAFE LOADING AND TRANSPORT OF
THE EXCAVATOR
(1) Chain
(2) Block
(1) Tow line

5SAFE OPERATION
7. Do not use the hooks on the roof of CAB for lifting the
excavator.
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. Turn off the engine at all times when filling with fuel.
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.
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.
Max. drawbar pull at
coupling hook 116.9 kN (11920 kgf)
Max. vertical load at
coupling hook 12.1 kN (1234 kgf)
5. MAINTENANCE

SAFE OPERATION6
13.To avoid fire, do not heat the hydraulic components
(tanks, pipes, hoses, cylinders) before they have been
drained and washed.
14.Use a face mask or eye protection 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 turning 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.

7SAFE OPERATION
6. DANGER, WARNING AND CAUTION LABELS

SAFE OPERATION8

9SAFE OPERATION

SAFE OPERATION10

11SAFE OPERATION

SAFE OPERATION12