Kubota u27-4 Service Manual
OPERATOR'S MANUAL
U.S.A. :KUBOTATRACTORCORPORATION
Canada :KUBOTACANADALTD.
France :KUBOTAEUROPES.A.S
Italy :KUBOTAEUROPES.A.SItalyBranch
Germany :KUBOTABAUMASCHINENGmbH
U.K. :KUBOTA(U.K.)LTD.
Australia :KUBOTATRACTORAUSTRALIAPTYLTD.
Malaysia :SIMEKUBOTASDN.BHD.
Philippines :KUBOTAPHILIPPINES,INC.
Taiwan :SHINTAIWANAGRICULTURALMACHINERYCO.,LTD.
Thailand :SIAMKUBOTACORPORATIONCO.,LTD.
1000
KubotaDrive,Grapevine,TX
Telephone:
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19-25
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KUBOTA
thAvenue,Markham,Ontario,L3S4K4,Canada
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KUBOTA
EXCAVATOR
MODEL
U
27-4
AV. I. 1-1. -. K
Japan :KUBOTACorporation
Farm&IndustrialMachineryInternationalOperationsHeadquarters
2-47
,Shikitsuhi㷅ashi1-chome,Naniwa-ku,Osaka,Japan
556-8601
English (U.S.A.)
Code No. RH418-8193-1
KUBOTA Corporation 2017
©
U
2
7
4
1BAAEAPAP0010 1BAAEABAP0280
READ AND SAVE THIS MANUAL
ABBREVIATION LIST
Abbreviations Definitions
AI
API
ASTM
CECE
DIN
EN
FRONT
Hi
ISO
JIS
L
L/min
Lo
MIL
OPG
OSHA
Auto Idle
American Petroleum Institute
American Society for Testing and Materials, USA
Committee for European Construction Equipment
Deutsches Institut für Normung, GERMANY
(German Institute for Standardization)
European Standard
"Front" means the direction towards the boom and dozer
High speed
International Organization for Standardization
Japanese Industry Standard
Volume (Liter)
Liter per minute
Low speed
Military Standard
Operator Protective Guards
Occupational Safety and Health Administration
ROPS
rpm
SAE
TPSS
Roll-Over Protective Structure
Revolutions Per Minute
Society of Automotive Engineers, USA
Two Pattern Selection System
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.
IMPORTANT
The engine in this machine is not equipped by the manufacturer
with a standard spark arrester.
It is a violation of California Public Resource Code Section 4442 to
Use or operate this engine on or near any forest-covered, brushcovered land, or grass-covered land unless the exhaust system is
equipped with a working spark arrester meeting state laws. Other
states or federal areas may have similar laws.
U27-4
English (U.S.A.)
GENERAL SYMBOLS
The instruments and operation elements have been marked with a series of symbols in order to simplify the operation of
your excavator. These symbols are listed below with the respective descriptions.
Warning light
Fuel indicator
Engine oil indicator
Charge indicator
Glow indicator
Working lights
Horn
Hydraulic oil
Travel speed
Low speed
Forward travel
Backward travel
Raise boom
Read operator’s manual
Bolted
Released
Rotary beacon
Display selector switch
Menu button
Auxiliary port indicator
Service interval indicator
Set clock indicator
Indicator coolant temperature
Fan
Indirect return flow
Direct return flow
Lower boom
Arm crowd
Arm dump
Bucket crowd
Bucket dump
Swivel boom (left)
Swivel boom (right)
Dozer up
Dozer down
Lever direction
Control lever direction
System lamp
Warning lamp “Auto Idle (AI) Lamp”
Diesel
Gear oil
Grease
Engine stop control lamp
Working light switch
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.
SAFETY FIRST
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 :
WARNING :
CAUTION :
IMPORTANT :
NOTE : Gives helpful information.
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, could result in minor or moderate injury.
Indicates that equipment or property damage could result if
instructions are not followed.
CONTENTS
SAFE OPERATION ............................................................................................ -1
DEALER SERVICE...................................................................................................... 1
TECHNICAL DATA...................................................................................................... 3
DESCRIPTION OF MACHINE PARTS........................................................................ 4
INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 5
CHECKS BEFORE START ......................................................................................... 8
DAILY CHECKS....................................................................................................... 8
CAB TYPE MACHINES ........................................................................................... 8
Wiper/Washer Switch .......................................................................................................8
Interior Lamp..................................................................................................................... 8
Working Light Switch ........................................................................................................9
Heater Switch ...................................................................................................................9
Opening/Closing of CAB Door........................................................................................ 10
Opening/Closing of Front CAB Window..........................................................................10
Opening/Closing of Side CAB Window........................................................................... 11
Emergency Hammer....................................................................................................... 11
HANDLING THE SAFETY DEVICES..................................................................... 11
Pilot Control Lock Lever.................................................................................................. 11
OPERATION OF THE ENGINE................................................................................. 12
STARTING THE ENGINE ...................................................................................... 12
Display Selector Switch .................................................................................................. 13
Battery Charge Lamp...................................................................................................... 15
Engine Oil Pressure Warning Lamp ...............................................................................15
Glow Lamp......................................................................................................................15
LCD for Normal Operation.............................................................................................. 16
LCD for Warning............................................................................................................. 17
Warning Lamp ................................................................................................................17
Checkpoints after Starting the Engine ............................................................................18
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 18
Precautions in case of Overheat.....................................................................................18
STOPPING THE ENGINE...................................................................................... 19
Engine Stop Button.........................................................................................................19
STARTING WITH AN AUXILIARY BATTERY ....................................................... 19
Observe Following Guidelines when Starting with an Auxiliary Battery..........................19
EXCAVATOR OPERATION ...................................................................................... 21
RUNNING-IN OF THE NEW EXCAVATOR........................................................... 21
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours.. 21
Oil Change in the Run-in Stage...................................................................................... 21
Seat Belt .........................................................................................................................21
STARTING ............................................................................................................. 21
Operator's Seat...............................................................................................................21
Pilot Control Lock Lever.................................................................................................. 22
Working Light Switch ......................................................................................................22
CONTENTS
Travel Buzzer.................................................................................................................. 22
Beacon Light Switch ....................................................................................................... 22
TWO PATTERN SELECTION SYSTEM (TPSS) ................................................... 23
Pattern Change............................................................................................................... 23
OPERATION OF THE BOOM................................................................................ 24
OPERATION OF THE ARM................................................................................... 24
OPERATION OF THE BUCKET ............................................................................ 25
SWIVEL(UNIT SWING)OPERATION .................................................................... 25
BOOM SWING OPERATION................................................................................. 25
OPERATION OF THE DOZER .............................................................................. 26
AUX PORT OPERATION....................................................................................... 26
One-way Hold Switch .....................................................................................................27
DRIVING ................................................................................................................ 28
Drive Levers (Right, Left)................................................................................................29
Throttle Lever..................................................................................................................29
Travel Speed Switch.......................................................................................................30
TURNS................................................................................................................... 30
Pivot Turn ....................................................................................................................... 30
Spin Turn ........................................................................................................................31
UP AND DOWNHILL TRAVELLING ...................................................................... 32
PARKING ON A SLOPE ........................................................................................ 32
PARKING ............................................................................................................... 32
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION ............................... 33
IMPORTANT INFORMATION ON EXCAVATOR OPERATION ............................ 34
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 34
TRANSPORTING THE EXCAVATOR ON A TRUCK................................................ 35
LIFTING OF THE EXCAVATOR................................................................................ 37
MAINTENANCE......................................................................................................... 39
MAINTENANCE INTERVALS ................................................................................ 39
OPENING AND CLOSING OF PARTS.................................................................. 41
Opening and Closing of the Fuel Tank Cap....................................................................41
Opening/Closing of the Engine Hood .............................................................................41
Opening/Closing of the Side Cover ................................................................................42
Opening/Closing of the Radiator Cover..........................................................................42
Opening/Closing of the Swivel Frame Cover.................................................................. 42
Where to store the Grease Gun......................................................................................42
Where to keep Operator's Manual..................................................................................43
Cup Holder......................................................................................................................43
DAILY CHECKS..................................................................................................... 43
Checking Coolant Level..................................................................................................43
Checking Fuel Level .......................................................................................................44
Checking Engine Oil Level.............................................................................................. 44
Checking Hydraulic Oil Level.......................................................................................... 45
Lubrication Points ........................................................................................................... 46
Check Fan Belt ...............................................................................................................47
Checking Radiator and Oil Cooler ..................................................................................47
Checking Washer Liquid (only for CAB type) .................................................................48
Checking and Cleaning Engine and Electrical Wiring.....................................................48
Washing Whole Machine................................................................................................ 48
CONTENTS
REGULAR CHECKS AND MAINTENANCE WORK ................................................. 49
EVERY 50 SERVICE HOURS ............................................................................... 49
Draining the Water from the Fuel Tank...........................................................................49
Draining Water Separator............................................................................................... 49
Battery ............................................................................................................................ 50
Battery Charging.............................................................................................................50
Greasing of Swing Bearing Teeth...................................................................................51
EVERY 200 SERVICE HOURS ............................................................................. 51
Checking Fan Belt Tension.............................................................................................51
Checking Radiator Hoses and Clamps...........................................................................52
Inspection and Cleaning Air Filter Element.....................................................................52
Air Filter Maintenance..................................................................................................... 53
Greasing Swing Bearing................................................................................................. 53
Checking Fuel Line and Intake Air Line ..........................................................................53
EVERY 250 SERVICE HOURS ............................................................................. 54
Lubrication of the Pilot Valve .......................................................................................... 54
EVERY 500 SERVICE HOURS ............................................................................. 54
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)........................................................................54
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)...................55
Drive unit Oil Change(First Oil Change of the 50 hours) ................................................ 56
Replacing Fuel Filter Cartridge....................................................................................... 56
Replacing Hydraulic Return Filter Element..................................................................... 57
EVERY 1000 SERVICE HOURS ........................................................................... 57
Replacing the Hydraulic Pilot Filter Element...................................................................57
Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 58
Hydraulic Oil Check with Hydraulic Breakers .................................................................59
EVERY 1000 SERVICE HOURS OR ONCE A YEAR ........................................... 59
Replacing Air Filter Element ...........................................................................................59
EVERY 1500 SERVICE HOURS ........................................................................... 59
Checking Fuel Injection Nozzle (Injection Pressure) ...................................................... 59
EVERY 2000 SERVICE HOURS ........................................................................... 59
Changing Front Idler and Track Roller Oil ......................................................................59
Checking the Alternator and Starter Motor .....................................................................59
EVERY 3000 SERVICE HOURS ........................................................................... 60
Checking Injection Pump................................................................................................60
ANNUAL SERVICING............................................................................................ 60
Electrical Wiring and Fuses ............................................................................................60
Checking the Electrical Circuit ........................................................................................60
BIENNIAL SERVICING .......................................................................................... 60
Replacement of Radiator Hoses and Hose Clamps ....................................................... 60
Changing Radiator Coolant ............................................................................................60
Replacing Fuel Hoses and Hose Clamps.......................................................................61
Replacing Intake Air line.................................................................................................61
OTHER ADJUSTMENTS AND REPLACEMENTS.................................................... 62
PURGING OF THE FUEL SYSTEM ...................................................................... 62
ADJUSTMENT OF TRACKS ................................................................................. 62
Special Information when Using Rubber Tracks.............................................................63
CHANGING THE BUCKET .................................................................................... 64
FUSES ................................................................................................................... 64
CONTENTS
Replacing Fuses............................................................................................................. 64
Fuse Capacities and Circuits.......................................................................................... 64
Slow Blow Fuse ..............................................................................................................64
TROUBLESHOOTING............................................................................................... 65
KUBOTA I.C.S. NAVIGATION LIST OF MESSAGES ........................................... 66
OPERATION UNDER COLD WEATHER CONDITIONS .......................................... 71
PREPARATION FOR OPERATION IN COLD WEATHER .................................... 71
PROCEDURE AFTER COMPLETING WORK ...................................................... 71
LONG STORAGE ...................................................................................................... 72
RECOMMENDED OILS............................................................................................. 74
MAIN DIMENSIONS .................................................................................................. 76
LIFTING CAPACITY .................................................................................................. 78
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. Pay special attention to and obey the danger, warning
and caution labels on the machine.
3. For your safety, a ROPS/OPG (Top Guard Level I)
with a seat belt is installed by KUBOTA.
A ROPS: Roll-Over Protective Structure
A OPG (Top Guard Level I): Operator Protective
Guards of Top Guard Level I
OPG (Top Guard Level I) in accordance with
ISO10262 is equivalent in definition to FOPS (Falling
Object Protective Structure).
Always use the seat belt when the machine is
equipped with a ROPS/OPG (Top Guard Level I) 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/
OPG (Top Guard Level I) 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/OPG (Top Guard Level I)
is loosened or removed for any reason, make sure all
parts are reinstalled correctly. Tighten mounting bolts
to proper torque.
4. ROPS meets requirements of ISO 3471.
OPG (Top Guard Level I) meets requirements of
OSHA 1926 1003/ISO 10262.
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 The lever and red knob will be locked automatically
when the new pattern position is reached.
A Do not operate the excavator unless the lever and red
knob have been locked into a pattern position.
(1) Pattern selector lever
(Two Pattern Selection System: TPSS)
(2) Red knob
(A) "Pattern A"
(B) "Pattern B"
SAFE OPERATION-2
8. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.
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. Use
your local utility service to check for such items (if
available).
A Check for hidden holes, hindrances, 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) Soft hat
(8) Towel
(9) Baggy trousers
(10) Loose cuffs of the shirt
(11) Baggy shirt
(12) Sandals or open-toed shoes
A Do not allow any persons within the working range of
the excavator during operation.
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 any time. 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 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.
2. OPERATING THE EXCAVATOR
Operator safety is a priority. Safe operation, specifically
with respect to overturning hazards, entails understanding
the equipment and environmental conditions at the time of
use. Some prohibited uses which can affect overturning
hazards include traveling and turning with implements
and loads carried too high etc. This manual sets forth
some of the obvious risks, but the list is not, and cannot
be, exhaustive. It is the operator's responsibility to be alert
for any equipment or environmental condition that could
compromise safe operation.
C Starting
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 "LOCKED" position and all control
levers and pedals are in their neutral positions and the
seat belt is fastened correctly.
Before starting the engine, make sure that the control
levers, travel lever, pedals and other control elements
are not stuck and can be moved smoothly.
If stuck, for example, a lever may fail to return, possibly
putting you in danger.
If anything wrong is found, immediately pinpoint the
cause and correct it.
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
C Working
1. Do not operate or idle engine in a non-ventilated area.
Carbon monoxide gas is colorless, odorless, and
deadly. If you experience the initial symptoms of low to
moderate co poisoning, which include the following,
stop operation, seek medical attention and contact
your local dealer. These symptoms are: headache,
fatigue, shortness of breath, nausea, or dizziness.
2. Keep all safety equipment and covers in place.
Replace damaged or missing safety devices.
3. When operating, keep hands and body inside of the
ROPS / OPG (Top Guard Level I) protective envelope.
4. 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 way due to the weight of
the excavator.
Never cross an incline horizontally or at an angle,
which can cause the machine to rollover. Approach
inclines vertically to avoid loss of control.
Avoid performing any work with the machine when it is
on an incline, which could cause it to become
unbalanced and rollover. Always take care when
moving the machine on an incline.
5. Watch where you are going at all times.
Watch for and avoid obstacles. Remain alert for trees,
wires and other obstructions.
6. Do not change direction on steep slopes, or the
excavator could tip over.
Before changing direction, beware of people in the
work area.
7. When the working light alone do not provide sufficient
visibility, prepare additional stationary artificial lighting
and observe safety rules for night work.
8. When towing the excavator or pulling a load, the load
must be less than the strength of the towing line
attached to excavator.
SAFE OPERATION-4
Max. drawbar pull at
coupling hook
Max. vertical load at
coupling hook
9. The towing eye should not be used for tie down or
lifting of the machine.
10.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.
A When working in groups, always let the others
know what you are going to do before you do it.
Keep others away from the machine working area.
Be sure to lock the boom swing pedal when the
boom swing function is not used.
11.For details of operating the excavator, see the
"EXCAVATOR OPERATION" section.
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.
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.
70.4 kN (7184 kgf) [15838 lbf]
7.2 kN (735 kgf) [1621 lbf]
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).
(1) Pilot control lock lever (A) "UNLOCK"
(B) "LOCKED"
-5SAFE OPERATION
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.
Stop the engine then remove the key.
After loading the excavator on the truck, block the
tracks with blocks and tie down the excavator at the
appropriate locations.
(1) Chain
(2) Block
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.
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. Do not use the hooks on the roof of cab or canopy for
lifting the excavator.
SAFE OPERATION-6
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.
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.
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.
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 pilot control lock
lever in the "LOCKED" position.
18.Inspect ROPS / OPG (Top Guard Level I) 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 a high-pressure fuel system. Highpressure 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 high- pressure fuel pump and injectors on engines
with high-pressure common rail fuel system.
21.To avoid hazardous high voltage, turn the key switch
to the "STOP" position and disconnect the battery
ground cable if it is necessary to check to repair the
computer, harness or connectors.
22.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.
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
SAFE OPERATION-8
6. DANGER, WARNING AND CAUTION LABELS
Keep the safety and warning symbols (labels ) on the excavator clean and legible, replacing them if necessary.
The positioning of the safety symbols is illustrated in the following figures.
-9SAFE OPERATION
SAFE OPERATION-10
-11SAFE OPERATION
SAFE OPERATION-12
-13SAFE OPERATION
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, and 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.
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.
For service, contact the KUBOTA Dealer shop from which
you purchased your product, or your local KUBOTA
dealer. 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)
1DEALER SERVICE
Date of purchase
C Warranty policy
This product is warranted under the KUBOTA Limited
Express Warranty, a copy of which may be obtained from
your selling dealer. No warranty shall, however, apply if
the product has not been handled according to the
instruction given in the Operator's Manual even it is within
the warranty period.
The Product(s) described in this Operator’s Manual are
designed and manufactured only for the country in which
they are initially wholesaled by KUBOTA or one of its
affiliated companies. Neither KUBOTA Corporation nor its
affiliated companies provide warranty for any Product
which is re-sold or retailed in any country other than the
country for which the Product(s) were designed or
manufactured.
C Scrapping the product and its procedure
To put the product out of service, correctly follow the local
rules and regulations of the country or territory where you
reside. If you have questions, consult your local KUBOTA
Dealer.
(1) Serial No.
DEALER SERVICE2
(1) Engine serial No.
TECHNICAL DATA
KUBOTA EXCAVATOR
Model name U27-4
Type canopy cabin
Mass (without operator) kg (lbs.) 2490 (5490) 2590 (5711)
Volume (CECE) m (cu.in.) 0.054 (3295)
Standard
bucket
Width [with side cutter] mm (in.) 450 [475] (17.7 [18.7])
Weight kg (lbs.) 55 (121)
3TECHNICAL DATA
Type
(water cooled 4 cycle Diesel)
Model name KUBOTA D1105-E4-BH-5
Engine
Performance
Dozer (width & height) mm (in.) 1500 x300 (59 x 12)
Boom swing angle
Total displacement cm (cu.in.) 1123 (68.5)
Output
Rated speed rpm 2400
Swing speed rpm 9.9
Travel
speed
Ground pressure kPa
(kgf/cm )
[psi]
Climbing angle % (deg) 27 (15)
Max. lateral sway % (deg) 18 (10)
SAE gross kW (HP) 15.6 (20.9)
SAE Net kW (HP) 14.8 (19.8)
fast km/h (mph) 4.5 (2.8)
slow km/h (mph) 2.5 (1.6)
Left rad (deg) 1.31 (75)
Right rad (deg) 0.96 (55)
3 cylinder - diesel engine water cooled
23.7
(0.24)
[3.44]
24.7
(0.25)
[3.58]
Max. displacement
Pressure
connection
for attachments
Fuel tank capacity L (US gal) 33 (8.72)
A Above dimensions are based on the machine with JPN bucket.
JPN = made in Japan
A Above dimensions are based on the machine with rubber crawlers.
A Specifications subject to change without notice.
L (US gal) / min
Max. pressure MPa
(kgf/cm )
[psi]
48.0 (12.7)
21.6
(220)
[3133]
4 DESCRIPTION OF MACHINE PARTS
DESCRIPTION OF MACHINE PARTS
[Canopy]
DEPICTED CONTENTS
(1) Arm
(2) Bucket cylinder
(3) Bucket link 2
(4) Bucket link 1
(5) Bucket
(6) Boom cylinder
(7) Swing bracket
(8) Crawler
(9) Dozer
(10) Boom
(11) Arm cylinder
(12) ROPS
(13) Operator's seat
(14) Drive sprocket
(15) Front idler
(16) Dozer cylinder
(17) Engine hood
(18) Working light
(19) Cabin
[Cabin]
5INSTRUMENT PANEL AND CONTROL ELEMENTS
INSTRUMENT PANEL AND CONTROL ELEMENTS
B Switches
DEPICTED CONTENTS
(1) One way hold switch............................................
(2) Travel speed switch.............................................
(3) Starter switch.......................................................
(4) Engine stop button...............................................
(5) Beacon light switch..............................................
(6) Working light switch.............................................
(7) Indicator for auxiliary port.....................................
(8) Horn switch..........................................................
(9) Rocker switch for auxiliary port............................
(10) Potentiometer for auxiliary port..........................
(11) Enable switch for auxiliary port (switch 1)..........
(12) User setting switch (switch 2)............................
(13) Display selector switch (switch 3)......................
[Cab model]
(14) Wiper / washer switch........................................
(15) Heater switch.....................................................
Ref. page
27
30
12
19
22
9, 22
26
12
26
34
26
13
13
8
9
6 INSTRUMENT PANEL AND CONTROL ELEMENTS
B Control Pedals and Levers
DEPICTED CONTENTS
(1) Throttle lever........................................................
(2) Drive lever (left)....................................................
(3) Drive lever (right)..................................................
(4) Control lever for front attachments (left)...............
(5) Control lever for front attachments (right).............
(6) Dozer control lever................................................
(7) Boom swing pedal.................................................
(8) Pilot control lock lever *.........................................
Ref. page
29
29
29
24, 24, 25
24, 24, 25
26
25
11
D Pulling up the pilot control lock lever prevents inadvertent machine movement.
B Instrument Panel
7INSTRUMENT PANEL AND CONTROL ELEMENTS
DEPICTED CONTENTS
(1) Travel speed indicator lamp.................................
(2) Periodic check lamp.............................................
(3) Clock setting request lamp...................................
(4) Glow lamp.............................................................
(5) Remaining fuel warning lamp................................
(6) Engine oil pressure warning lamp.........................
Ref. page
30
66
13
15
16
15
(7) Battery charge lamp..............................................
(8) Coolant temperature warning lamp.......................
(9) Warning lamp........................................................
(10) Fuel gauge..........................................................
(11) Coolant temperature gauge................................
(12) LCD....................................................................
Ref. page
15
16
17
16
16
16
8 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 or death:
A Do maintenance work on the excavator only on
even ground with the engine off and the pilot
control lock lever in the "LOCKED" 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 greasing points.
Check all control lamps, indicators, revolution counter and
hour meter.
Confirm all controls move freely and do not stick.
Check the light system.
Check the seat belt and the ROPS/OPG (Top Guard Level
I) safety device.
Check the condition of the safety and warning labels. (See
"DANGER, WARNING AND CAUTION LABELS" in
"SAFE OPERATION" section.)
(1) Wiper / Washer switch
(2) Starter switch
BInterior Lamp
To turn on the interior lamp, set the interior lamp switch to
the "ON" position.
CAB TYPE MACHINES
BWiper/Washer Switch
To move the wiper, turn on the switch for the wiper when
the starter switch in position "RUN". A further push on the
switch will activate the washer system. Even when the
wiper switch is in position "OFF", 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) Interior lamp
(2) Interior lamp switch
(A) "ON"
(B) "OFF"
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