Kubota U25-3S User manual

U.S.A. :KUBOTATRACTORCORPORATION
3401 DelAmoBlvd.,Torrance,CA 90503 ,U.S.A.
Telephone:(
310 ) 370 - 3370
Canada :KUBOTACANADALTD.
5900  14 thAvenue,Markham,Ontario,L 3 S 4 K 4 ,Canada
Telephone:(
905 ) 294 - 7477
France :KUBOTAEUROPES.A.S
19 - 25 ,RueJulesVercruysse,Z.I.BP 88 , 95101 Ar㷅enteuilCedex,France
Telephone:(
33 ) 1 - 3426 - 3434
Italy :KUBOTAEUROPES.A.SItalyBranch
ViaGrandi,
29  20068 PeschieraBorrome(MI)Italy
Telephone:(
39 ) 02 - 51650377
Germany :KUBOTABAUMASCHINENGmbH
Steinhauserstr,
100 , 66482 ZweibruckenRheinlandpfalzGermany
Telephone:(
49 ) 6332 - 4870100
U.K. :KUBOTA(U.K.)LTD.
DormerRoad,Thame,Oxfordshire,OX
9  3 UN,U.K.
Telephone:(
44 ) 1844 - 214500
Australia :KUBOTATRACTORAUSTRALIAPTYLTD.
25 - 29 PermasWay,Tru㷅anina,VIC 3029 ,Australia
Telephone:(
61 )- 3 - 9394 - 4400
Malaysia :SIMEKUBOTASDN.BHD.
No.
3 JalanSepadu 25 / 123 TamanPerindustrianAxis,
Seksyen
25 , 40400 ShahAlam,Selan㷅orDarulEhsanMalaysia
Telephone:(
60 ) 3 - 736 - 1388
Philippines :KUBOTAPHILIPPINES,INC.
155 PanayAvenue,SouthTrian㷅leHomes, 1103 QuezonCity,Philippines
Telephone:(
63 ) 2 - 9201071
Taiwan :SHINTAIWANAGRICULTURALMACHINERYCO.,LTD.
16 ,Fen㷅pin㷅 2 ndRd,TaliaoShian㷅Kaohsiun㷅 83107 ,TaiwanR.O.C.
Telephone:(
886 ) 7 - 702 - 2333
Thailand :SIAMKUBOTACORPORATIONCO.,LTD.
101 / 19 - 24 Moo 20 ,NavanakornIndustrialEstate,TambonKhlon㷅nuen㷅,AmphurKhlon㷅luan㷅,
Pathumthani
12120 ,THAILAND
Telephone:(
66 ) 2 - 909 - 0300
Japan :KUBOTACorporation
Farm&IndustrialMachineryInternationalOperationsHeadquarters
2 - 47 ,Shikitsuhi㷅ashi 1 -chome,Naniwa-ku,Osaka,Japan 556 - 8601
WesternDivision : 1175 S.GuildAvc.,Lodi,CA 95240
Telephone :( 209 ) 334 - 9910
CentralDivision : 14855 FAABlvd.,FortWorth,TX 76155
Telephone :( 817 ) 571 - 0900
NorthernDivision : 6300 atOneKubotaWay,Groveport,OH 43125
Telephone :( 614 ) 835 - 1100
SoutheastDivision : 1025 NorthbrookParkway,Suwanee,GA 30024
Telephone :( 770 ) 995 - 8855

API American Petroleum Institute
ASTM American Society for Testing and Materials, USA
CECE Committee for European Construction Equipment
DIN German Institute for Standards, Federal Republic of Germany
EN European Standard
OPG Operator Protective Guards
FRONT "Front" means the front view towards the boom and dozer
Hi High speed
ISO International Standardization Organization
JIS Japanese Industrial Standard
L Volume (Liter)
L/min Liter per minute
Lo Low speed
MIL Military Standards
rpm Revolutions per minute
ROPS Roll-Over Protective Structures
SAE Society of Automotive Engineers, USA
TPSS Two Pattern Selection System
LIST OF ABBREVIATION
noitpircseDsnoitaiverbbA

 
    


Safety alert Symbol
Alarm lamp “Fuel level too low”
Alarm lamp “Engine Oil pressure “
Alarm lamp “Battery charge”
Horn
Diesel
Hydraulic fluid
Fast
Slow
Excavator - Overhead movement toward the front
Excavator - Overhead movement toward the rear
Boom up
Boom down
Arm up
Arm lower
Bucket in
Bucket dig / rollback
Wiper/Washer switch
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
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.

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.
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.
FOREWORD
SAFETY FIRST

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
SLIDING THE SEAT ................................................................................................ 6
OPENING AND CLOSING OF PARTS.................................................................... 7
Opening / Closing of the Engine Bonnet...........................................................................7
Opening and Closing of the Fuel Tank Cover...................................................................7
Keeping the Tools............................................................................................................. 8
Operator's Manual Storage............................................................................................... 8
HANDLING THE SAFETY DEVICES....................................................................... 8
Control Lever Lock............................................................................................................ 8
Roll-Over Protective Structures (ROPS) / Operator Protective Guards of Top Guard Level
I (OPG (Top Guard Level I)) ............................................................................................. 9
OPERATION OF THE ENGINE................................................................................. 10
STARTING THE ENGINE ...................................................................................... 10
Display Selector Switch .................................................................................................. 11
Charge Lamp .................................................................................................................. 11
Oil Lamp ......................................................................................................................... 11
Glow Lamp...................................................................................................................... 11
LCD Display for Normal Operation ................................................................................. 12
LCD Display for Warning ................................................................................................ 13
Warning Lamp ................................................................................................................ 13
Checkpoints after Starting the Engine ............................................................................ 14
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 14
STOPPING THE ENGINE...................................................................................... 14
Engine Stop Lever .......................................................................................................... 15
STARTING WITH AN AUXILIARY BATTERY ....................................................... 15
Observe Following Guidelines when Starting with an Auxiliary Battery.......................... 15
EXCAVATOR OPERATION ...................................................................................... 16
RUNNING-IN OF THE NEW EXCAVATOR........................................................... 16
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours.. 16
Oil Change in the Run-in Stage ...................................................................................... 16
Seat Belt ......................................................................................................................... 16
STARTING ............................................................................................................. 16
Adjusting the Operator's Seat ......................................................................................... 16
Lock Lever ......................................................................................................................17
Working Light Switch ...................................................................................................... 17
Travel Buzzer.................................................................................................................. 17
TWO PATTERN SELECTION SYSTEM(TPSS) .................................................... 18

CONTENTS
Pattern Change............................................................................................................... 18
OPERATION OF THE BOOM................................................................................ 19
OPERATION OF THE ARM................................................................................... 19
OPERATION OF BUCKET .................................................................................... 20
SWIVEL(UNIT SWING)OPERATION .................................................................... 20
BOOM SWING OPERATION................................................................................. 20
OPERATION OF THE DOZER .............................................................................. 20
SERVICE PORT OPERATION .............................................................................. 21
DRIVING ................................................................................................................ 21
Drive Levers (Right, Left)................................................................................................ 22
Travel Speed Switch....................................................................................................... 22
TURNS................................................................................................................... 23
Pivot Turn ....................................................................................................................... 23
Spin Turn ........................................................................................................................ 24
UP AND DOWNHILL TRAVELLING ...................................................................... 24
PARKING ON A SLOPE ........................................................................................ 25
IMPORTANT INFORMATION ON EXCAVATOR OPERATION ............................ 25
TRANSPORTING THE EXCAVATOR ON A TRUCK................................................ 26
LIFTING OF THE EXCAVATOR................................................................................ 28
MAINTENANCE......................................................................................................... 30
MAINTENANCE INTERVALS ................................................................................ 30
DAILY CHECKS..................................................................................................... 33
Check Fuel Level ............................................................................................................ 33
Check Engine Oil Level .................................................................................................. 34
Check Hydraulic Oil Level............................................................................................... 34
Checking Coolant Level.................................................................................................. 35
Washing Whole Machine ................................................................................................ 35
Lubrication Points ........................................................................................................... 35
Check Fan Belt ............................................................................................................... 36
Cleaning of Engine and Electrical Wiring........................................................................ 36
Check Radiator and Oil cooler........................................................................................ 36
REGULAR CHECKS AND MAINTENANCE WORK ................................................. 37
EVERY 50 SERVICE HOURS ............................................................................... 37
Draining the Water from the Fuel Tank........................................................................... 37
Draining Water Separator ............................................................................................... 37
Battery ............................................................................................................................ 38
Battery Charging............................................................................................................. 39
Greasing of Swing Bearing Teeth................................................................................... 39
EVERY 200 SERVICE HOURS ............................................................................. 40
Checking Fan Belt Tension............................................................................................. 40
Checking Radiator Hoses and Clamps........................................................................... 40
Inspection and Cleaning Air Filter Element.....................................................................41
Air Filter Maintenance..................................................................................................... 41
Greasing Swing Bearing ................................................................................................. 41
Checking Fuel Line and Intake Air Line.......................................................................... 42
EVERY 250 SERVICE HOURS ............................................................................. 42
Engine Oil Change (First Engine Oil Change after 50 Service Hours) ...........................42
Replacing Engine Oil Filter Cartridge (First Engine Oil Filter Change after 50 Service
Hours) ............................................................................................................................. 43

CONTENTS
Lubrication of the Pilot Valve .......................................................................................... 43
EVERY 500 SERVICE HOURS ............................................................................. 44
Drive Unit Oil Change(First Oil Change of the 100 hours).............................................. 44
Replacing Fuel Filter Cartridge ....................................................................................... 44
Replacing Hydraulic Return Filter Element (First replacement after 250 service hours) 45
EVERY 1000 SERVICE HOURS ........................................................................... 45
Cleaning of the Pipe filter of the Hydraulic Pilot System (for Hydraulic Pilot Types) ......45
Replacing the Hydraulic Pilot Filter Element................................................................... 45
Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 46
Hydraulic Oil Check with Hydraulic Breakers ................................................................. 47
EVERY 1000 SERVICE HOURS OR ONCE A YEAR ........................................... 47
Replacing Air Filter Element ........................................................................................... 47
EVERY 1500 SERVICE HOURS ........................................................................... 47
Checking Fuel Injection Nozzle(Injection Pressure) ....................................................... 47
EVERY 2000 SERVICE HOURS ........................................................................... 47
Changing Front Idler and Track Roller Oil ...................................................................... 47
Checking the Alternator and Starter Motor .....................................................................47
EVERY 3000 SERVICE HOURS ........................................................................... 47
Checking Injection Pump ................................................................................................ 47
ANNUAL SERVICING............................................................................................ 48
Electrical Wiring and Fuses ............................................................................................ 48
Checking the Electrical Circuit ........................................................................................ 48
BIENNIAL SERVICING .......................................................................................... 48
Replacement of Radiator Hoses and Hose Clamps .......................................................48
Changing Radiator Coolant ............................................................................................ 48
Replacing Fuel Hoses and Clamps ................................................................................49
Replacing Intake Air line ................................................................................................. 49
OTHER ADJUSTMENTS AND REPLACEMENTS.................................................... 50
PURGING OF THE FUEL SYSTEM ...................................................................... 50
ADJUSTMENT OF TRACKS ................................................................................. 50
Special Information when Using Rubber Tracks............................................................. 51
CHANGING THE BUCKET .................................................................................... 52
FUSES ................................................................................................................... 52
Replacing Fuses ............................................................................................................. 52
Fuse Capacities and Circuits .......................................................................................... 52
Slow Blow Fuse .............................................................................................................. 53
TROUBLESHOOTING............................................................................................... 54
KUBOTA I.C.S. NAVIGATION LIST OF MESSAGES ........................................... 55
OPERATION UNDER COLD WEATHER CONDITIONS .......................................... 57
PREPARATION FOR OPERATION IN COLD WEATHER .................................... 57
PROCEDURE AFTER DONE WORK.................................................................... 57
LONG STORAGE ...................................................................................................... 58
RECOMMENDED OILS............................................................................................. 60
MAIN DIMENSIONS .................................................................................................. 61
LIFTING CAPACITY .................................................................................................. 62

-1SAFE OPERATION
SAFE OPERATION
The best insurance against accidents is to abide by the
safety regulations.
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 taking the excavator into
operation. The owner is obliged to inform the operators of
these instruction in detail.
Keep this manual in the storage place. (See "Operator's
Manual Storage" in "CHECKS BEFORE START" section.)
1. Make yourself acquainted with the excavator and be
aware of its limits. Read the operating instructions
carefully before starting the excavator.
2. 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.
AROPS: Roll-Over Protective Structure
AOPG (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).
Do not modify structural members of 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 ROPS
is loosened or removed for any reason, make sure all
parts are reinstalled correctly. Tighten mounting bolts
to proper torque.
4. The seat belt must be inspected regularly and
replaced if damaged.
5. Always sit in the operator's seat when starting engine
or operating levers or controls.
6. Study control lever pattern A and pattern B. Then
choose the one which is most familiar. Familiarize
yourself with the pattern selected by operation slowly
at low engine speed.
AEngage the lever lock to prevent accidental pattern
change.
1. BEFORE OPERATION
(1) Seat belt
(1) Pattern selector lever
(Two Pattern Selection System:TPSS)
(2) Lever lock knob

SAFE OPERATION-2
7. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.
8. 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, hindrances, soft underground,
and overhangs.
ADuring excavator use, do not allow any persons within
the working range.
9. Do not allow other persons to use the machine before
having informed him on the exact operation and work
instructions, and be assured that the operator's
manual has been read and completely understood.
10.Do not wear baggy, torn or oversized clothing when
working with the excavator. 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.
11.Do not allow passengers to ride on any part of the
excavator at anytime. The operator must remain in the
excavator seat during operation.
12.Check mechanical parts for correct adjustments and
wear.
13.Keep your excavator clean. Heavy soiling, grease,
dust and grass can cause fires, accidents or injuries.
14.Use only KUBOTA authorized attachments.
15.Before starting the excavator, be absolutely sure that
the excavator has been filled with fuel, lubricated,
greased and undergone all necessary maintenance.
16.Do not modify the excavator, otherwise it could lead to
unforeseen safety problems.
17.Do not hammer anything that is above the operator's
seat level. Objects may fall into the operator station of
mini-excavator from front.
18.Make sure attachments, particularly those utilizing
quick attach systems, are securely mounted.
(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