Kubota u27-4 Service Manual

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Page 1

OPERATOR'S MANUAL

U.S.A. :KUBOTATRACTORCORPORATION

Canada :KUBOTACANADALTD.

France :KUBOTAEUROPES.A.S

Italy :KUBOTAEUROPES.A.SItalyBranch

Germany :KUBOTABAUMASCHINENGmbH

U.K. :KUBOTA(U.K.)LTD.

Australia :KUBOTATRACTORAUSTRALIAPTYLTD.

Malaysia :SIMEKUBOTASDN.BHD.

Philippines :KUBOTAPHILIPPINES,INC.

Taiwan :SHINTAIWANAGRICULTURALMACHINERYCO.,LTD.

Thailand :SIAMKUBOTACORPORATIONCO.,LTD.

1000

KubotaDrive,Grapevine,TX

Telephone:

590014 Telephone:(

19-25 Telephone:(

ViaGrandi, Telephone:(

Steinhauserstr, Telephone:(

DormerRoad,Thame,Oxfordshire,OX Telephone:(

25-29 Telephone:(

No. Seksyen Telephone:(

232

QuirinoHi㷅hway,Baesa,QuezonCity

Telephone:(

,Fen㷅pin㷅2ndRd,TaliaoShian㷅Kaohsiun㷅

Telephone:(

101/19-24 Pathumthani Telephone:(

888-4

KUBOTA

thAvenue,Markham,Ontario,L3S4K4,Canada

905)294-7477

,RueJulesVercruysse,Z.I.BP88,

33)1-3426-3434

2920068

PermasWay,Tru㷅anina,VIC

JalanSepadu25/

25,40400

Moo20,NavanakornIndustrialEstate,TambonKhlon㷅nuen㷅,AmphurKhlon㷅luan㷅,

PeschieraBorrome(MI)Italy

39)02-51650377

100,66482

49)6332-4870100

44)1844-214500

61)-3-9394-4400

123

ShahAlam,Selan㷅orDarulEhsanMalaysia

60)3-736-1388

63)2-422-3500

886)7-702-2333

12120

,THAILAND

66)2-909-0300

76051

95101

ZweibruckenRheinlandpfalzGermany

93

3029

,Australia

TamanPerindustrianAxis,

Ar㷅enteuilCedex,France

UN,U.K.

1106

,Philippines

83107

,TaiwanR.O.C.

KUBOTA

EXCAVATOR

MODEL

27-4

AV. I. 1-1. -. K

Japan :KUBOTACorporation

Farm&IndustrialMachineryInternationalOperationsHeadquarters 2-47

,Shikitsuhi㷅ashi1-chome,Naniwa-ku,Osaka,Japan

556-8601

English (U.S.A.) Code No. RH418-8193-1

KUBOTA Corporation 2017

2 7

1BAAEAPAP0010 1BAAEABAP0280

READ AND SAVE THIS MANUAL

Page 2

ABBREVIATION LIST

Abbreviations Definitions

API

ASTM

CECE

DIN

FRONT

ISO

JIS

L/min

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.)

Page 3

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

Page 4

FOREWORD

You are now the proud owner of a KUBOTA Excavator. This excavator is a product of KUBOTA quality engineering and manufacturing. It is made of fine materials and under a rigid quality control system. It will give you long, satisfactory service. To obtain the best use of your excavator, please read this manual carefully. It will help you become familiar with the operation of the excavator and contains many helpful hints about excavator maintenance. It is KUBOTA's policy to utilize as quickly as possible every advance in our research. The immediate use of new techniques in the manufacture of products may cause some small parts of this manual to be outdated. KUBOTA distributors and dealers will have the most up-to-date information. Please do not hesitate to consult with them.

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.

Page 5

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

Page 6

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

Page 7

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

Page 8

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

Page 9

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"

Page 10

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.

Page 11

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.

Page 12

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"

Page 13

-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.

Page 14

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.

Page 15

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

Page 16

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.

Page 17

-9SAFE OPERATION

Page 18

SAFE OPERATION-10

Page 19

-11SAFE OPERATION

Page 20

SAFE OPERATION-12

Page 21

-13SAFE OPERATION

Page 22

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.

Page 23

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.

Page 24

DEALER SERVICE2

(1) Engine serial No.

Page 25

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]

Page 26

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]

Page 27

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

Page 28

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.

Page 29

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

Page 30

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"

Page 31

BWorking Light Switch

To turn on the working light, set the starter switch to the "RUN" and then the working light switch to the "ON" positions, respectively.

(1) Working light switch

9CHECKS BEFORE START

(1) Heater outlet

BHeater Switch

Turn the starter switch to position "RUN" and turn the heater switch clockwise, the heater fan will be activated and the CAB will start to warm up. The heater has two positions - "Low" and "High" -.

(1) Heater switch (A) Pos. "High"

(B) Pos. "Low" (C) Pos. "Off"

(1) Heater outlet

A During the summer, turn the heater valve clockwise to

close the valve.

(1) Heater valve (A) Open

(B) Close

Page 32

CHECKS BEFORE START10

C Recirculation / Fresh Air Selection knob A FRESH AIR: Set the knob to the position, and

fresh air will flow into the CAB. This is helpful when you work in a dusty conditions or if the glass windows get foggy.

A RECIRCULATION: Set the knob to the position,

and the in-CAB air will be recirculated.This is useful for heating the CAB quickly or keeping it extra warm.

(1) Release lever (2) Door knob (inside)

3. When leaving the excavator, always lock the door.

BOpening/Closing of Front CAB Window

(1) Recirculation/ fresh air selection knob

(A) "FRESH AIR" (B) "RECIRCULATION"

A When heating, do not keep the knob at the

"RECIRCULATION" position for a long time. The windshield easily gets foggy.

A While working in a dusty condition, keep the knob at

the "FRESH AIR" position.

BOpening/Closing of CAB Door

1. Unlock the CAB door and pull the knob. Open the CAB door fully until fixed into place.

2. To close the CAB door, push the release lever down and close the door.

To avoid personal injury or death: A Keep hands and feet away from the area

between front window and CAB frame. Otherwise the operator risks serious pinching or crushing injuries.

A Other persons should stay away when opening

the window.

To open and close the front window, take the steps below.

1. Push the lock levers beside grip.

(1) Grip (2) Lock lever

(1) Door knob (outside)

2. Hold the grips tightly with both hands. Pull the grip slightly upward and toward yourself to let the windshield slide inward.

3. Pull the windshield all the way to the lock at the back of CAB.

4. To close the window, take the reverse steps 3, 2 and 1.

Page 33

11CHECKS BEFORE START

BOpening/Closing of Side CAB Window

1. Pull the grip to release the lock and pull side window open to the rear or to the front.

2. To close the side window, slide it forward or backward until the lock snaps in at the window frame.

(1) Grip

BEmergency Hammer

HANDLING THE SAFETY DEVICES

BPilot Control Lock Lever

To avoid personal injury or death: A When the excavator is not used or left

unattended, be sure to place the pilot control lock lever in position "LOCKED".

If the pilot control lock lever is raised in position "LOCKED" completely, then the hydraulic functions of the following controls will be locked.

To avoid personal injury or death: A When breaking the window pane, close your

eyes and cover them with an arm.

The emergency hammer is for breaking rear window pane to escape from excavator should escape from the left side door, front window pane or right window pane is not possible.

(1) Emergency hammer

(1) Pilot control lock lever (A) "UNLOCK"

(B) "LOCKED"

(1) Drive lever (Left) (2) Drive lever (Right) (3) Control lever for attachments (Left) (4) Control lever for attachments (Right) (5) Dozer control lever

Page 34

12 OPERATION OF THE ENGINE

OPERATION OF THE ENGINE

To avoid personal injury or death: A Read "SAFE OPERATION" at the beginning of

this operator's manual.

A Obey the danger, warning and caution labels

on the excavator.

A To avoid the danger of exhaust fume (carbon

monoxide) poisoning, do not operate the machine in a closed building without proper ventilation.

A Always start the engine from the operator's

seat. Do not start the engine while standing next to the excavator. Before starting the engine, sound the horn to get the attention of persons standing nearby.

(1) Drive lever (left) (2) Drive lever (right) (3) Attachment control lever (left) (4) Attachment control lever (right) (5) Pilot control lock lever

2. Pull the pilot control lock lever all the way back. ("LOCKED" position) A Put the throttle lever towards the "SLOW" position.

(1) Horn switch

A Do not use starting fluid or ether. A In order not to overload the battery and starter, avoid

engaging the starter more than 10 sec.

A When engine does not start in 10 sec., please wait 20

sec. or more, before attempting to restart.

STARTING THE ENGINE

To avoid personal injury or death: A The operator should not depend solely on the

warning lamps, but should always conduct the routine checks (see "MAINTENANCE").

Start the engine in the following manner:

1. Before starting the engine, make sure that all control levers are in the neutral positions.

(1) Throttle lever (A) "FAST"

(B) "SLOW"

3. Insert the key into the starter switch and turn it to the position "RUN". The glow lamp indicator will light up while the engine is preheated and will go out automatically after preheating is finished.

Page 35

(1) Starter switch (A) "STOP"

(B) "RUN" (C) "START"

4. Turn the key to the position "START" and release after the engine has started.

5. Check if oil lamp and charge lamp have gone out. Should a warning lamp still be lit up, stop the engine then remove the key and check for the cause.

13OPERATION OF THE ENGINE

C Setting the clock [Selecting the clock setting mode]

1. Press the user setting switch (switch 2).

2. Select the clock setting mode by pressing the display selector switch (switch 3) and the clock setting request lamp " " on the instrument panel lights up.

(1) Clock setting request lamp (2) User setting switch (switch 2) (3) Display selector switch (switch 3)

A When the pilot control lock levers are in "UNLOCK"

position, the engine does not start.

BDisplay Selector Switch

Press the display selector switch. The electronic meter's LCD will change from one indication mode to the other. Change the three-mode display according to your jobs.

(1) Display selector switch (2) LCD

A Press switch 3 for a long time and the year, month,

day, hour and minute will be selected in this order.

[Setting the year]

Press switch 2 and the numeric setting will be smaller. Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

2008

2007

2006

2010

2009

2008

A While setting the clock, the clock setting request lamp

" " on the instrument panel is blinking.

A With the starter key at the "STOP" position, press the

electronic meter's display selector switch, and the LCD shows the hour meter, fuel gauge and water temperature gauge for 10 seconds.

Page 36

OPERATION OF THE ENGINE14

[Setting the month]

Press switch 2 and the numeric setting will be smaller. Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

[Setting the day]

Press switch 2 and the numeric setting will be smaller. Press switch 3 and the numeric setting will be larger.

[Setting the hour]

Press switch 2 and the numeric setting will be smaller. Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

[Setting the minute]

Press switch 2 and the numeric setting will be smaller. Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

[Changing the AM/PM system to the 24-hour system]

Select the AM/PM system or 24-hour system by pressing switch 3.

If switch 3 is pressed for a long time, the new settings will be made.

A If the battery is disconnected, the clock setting request

lamp " " (yellow) will blink for requesting the setting the clock.

Page 37

15OPERATION OF THE ENGINE

BEngine Oil Pressure Warning Lamp

The engine oil pressure warning lamp lights up due to failure of the lubricating system with the engine running. When the starter switch is turned to "RUN" with the

engine off, this lamp lights up, and when the engine starts, the lamp goes out. If the lamp stays on with the engine running, stop the engine and check the engine oil level.

A If there is disconnection, failure or breakdown in the

lubricating system when the key is turned to "RUN", the following symbol will appear.

(1) Battery charge lamp (2) Engine oil pressure warning lamp (3) Glow lamp

BBattery Charge Lamp

This warning lamp lights up if the charging system fails with the engine running. When the starter switch is turned to "RUN" with the engine off, the lamp lights up, and when the engine starts, the lamp goes out. If the lamp stays on with the engine running, stop the engine and check the fan belt.

A If there is disconnection or failure in the charging

system when the key is turned to "RUN", the following symbol will appear.

BGlow Lamp

With the starter key at the "RUN" position, the engine's preheat status is indicated.

A When the starter switch is turned to the "RUN"

position, the engine will be preheated for a given period of time and the indicator will turn on.

A The above indication appears momentarily when the

engine is started, but it does not indicate trouble. (This is because the oil charge sensor output fluctuates when the engine is started.)

A The following symbol appears momentarily as the

engine starts. This is not an error.

Page 38

OPERATION OF THE ENGINE16

BLCD for Normal Operation

C Fuel gauge

To avoid personal injury or death:

A Before adding fuel, be sure to stop the engine. A Be sure to keep open flame away from the

machine. Otherwise a fire may result.

If the fuel in the tank goes below the prescribed level, the warning lamp will flash. If this should happen during operation, refuel as soon as possible.

C Coolant Temperature Gauge

To avoid personal injury or death: A Do not open the radiator cap during or just after

operation. Hot coolant may gush out and scald you. Wait for the coolant to cool down before opening the cap.

With the starter key at the "RUN" position, the cooling water temperature is indicated.

(1) Fuel gauge (2) Remaining fuel warning lamp

(A) "FULL" (B) "EMPTY"

A If the fuel gauge indicator is near the "", add fuel as

soon as possible. If the indicator is near "" and the machine operates on a slope, the engine may run out of fuel.

(1) Coolant temperature gauge (A) "HOT"

(B) "COOL"

C Hour-meter

Indicates the total operating hours of the machine.

How the indicator works A The meter advances one hour after an hour of

operation regardless of the engine rpm.

C Engine tachometer

Indicates the current rpm of the engine.

A The LCD may be illegible when viewed from a certain

angle. This is not a display failure.

Page 39

17OPERATION OF THE ENGINE

BLCD for Warning

C Engine oil pressure warning lamp

The engine oil pressure warning lamp lights up due to failure of the lubricating system with the engine running. When the starter key is turned to "RUN" position with the engine off, this engine oil pressure lamp lights up, warning lamp blinks and when the engine starts, the lamps go out. If the lamp stays on with the engine running, stop the engine and check the engine oil level.

(1) Engine oil pressure lamp (2) Warning lamp (red) (3) Warning message

BWarning Lamp

The warning lamp is used to indicate broken wire, shortcircuit, fuel shortage and other problems.

A Do not just look at the meter, but also carry out the

inspection and correction accordingly.

A The warning lamp starts flashing in red if a serious

problem occurs. If the system gets in warning signal, the warning lamp starts flashing in yellow.

A Warnings and errors are displayed and an alarm

buzzer beeps.

A Let your KUBOTA dealer inform you of details

concerning care and maintenance.

C Battery charge lamp

This battery charge lamp lights up if the charging system fails with the engine running. When the starter key is turned to "RUN" position with the engine off, the battery charge lamp lights up, warning lamp blinks and when the engine starts, the lamps go out. If the lamp stays on with the engine running, stop the engine and check the V-belt.

(1) Battery charge lamp (2) Warning lamp (red) (3) Warning message

(1) Warning lamp (2) Warning message

Page 40

OPERATION OF THE ENGINE18

C Overheat warning

1. If the coolant temperature becomes elevated, the coolant temperature warning lamp blinks and the warning message (E: 015) appears on LCD. The message fades out after a short time and the coolant temperature warning lamp blinks as long as the temperature remains elevated. Operate the machine only with reduced loads until the operating temperature is normal again.

(1) Coolant temperature warning lamp (2) Warning message

STARTING THE ENGINE UNDER COLD CONDITIONS

To avoid personal injury or death: A Make sure that the pilot control lock lever is in

the "LOCKED" position during warm up.

Start the engine in the following manner;

1. Pull the pilot control lock levers all the way back (lock position).

2. Turn the starter switch to the position "RUN" (glow position) and keep until the indicator lamp has gone out.

3. Move the starter switch to the position "START" to crank and start engine.

4. Release the starter switch after the engine has started; it will automatically return to the position "RUN".

A Let the engine warm up after start-up for approx. 10

minutes under no load conditions. If the hydraulic fluid temperature is too low, the operation will be affected. Do not operate the excavator under full load until the engine has sufficiently warmed up.

BCheckpoints after Starting the Engine

After starting the engine, but before starting operation, check the following points:

1. Put the throttle lever in position "SLOW" and let the engine idle for approx. five minutes. This allows the engine lubricant to warm up and penetrate every part of the engine.

A This idling is usually called "Warm-up".

2. Once the engine has warmed up, check: A the warning lamp "Engine oil pressure" has gone

out.

A the warning lamp "Battery charge" goes out when

engine speed is increased.

A the color of the exhaust is normal and no abnormal

noises or vibrations are heard or felt.

A no fluid is leaking from pipes or hoses.

C Should any following conditions occur, stop the

engine immediately.

A The engine rpm's increases or decreases suddenly. A Sudden abnormal noises are heard. A Exhaust is black. A Warning lamp for engine oil lights up during operation.

BPrecautions in case of Overheat

To avoid personal injury or death: A Do not open the radiator cap during operation

or just after shut-down. Otherwise, steam or very hot coolant may gush out, getting you scalded. Make sure the radiator has cooled down enough before opening its cap.

If coolant gets heated up to the boiling point or over (overheated), take the following steps.

1. Stop operation in a safe position. (Disconnect the engine's load.)

2. Do not stop the engine suddenly. Keep the engine idling under no load for about 5 minutes and then turn it off.

3. Keep yourself enough away from the machine for another 10 minutes or while steam is emitting.

4. Make sure there is no hazard of getting burned. Check and remove the cause of overheat, referring to "TROUBLESHOOTING". Then restart the engine.

A In these cases, the excavator must be checked and

serviced by your local the KUBOTA dealer.

Page 41

19OPERATION OF THE ENGINE

STOPPING THE ENGINE

To avoid personal injury or death: A Do not keep the bucket or dozer in the lifted

position, as a person could accidentally touch the levers and cause serious accidents.

1. Place the bucket and dozer on the ground.

2. After slowing the engine to idle, turn the key to "STOP".

3. Remove the key.

4. Pull the pilot control lock lever to "LOCKED" position.

BEngine Stop Button

To avoid personal injury or death:

A Keep hands away from rotating parts.

A Be sure to return the stop button to former position

after the engine stops.

The engine stops when the key is turned off. If the engine does not stop, pull back the stop button and hold it until the engine stops.

STARTING WITH AN AUXILIARY BATTERY

To avoid personal injury or death: A Battery gases can explode.

Do not smoke and keep sparks and flames away.

A Do not start the engine with an auxiliary battery

if excavator battery is frozen.

A Do not connect the black jumper cable to the

negative (-) terminal of the excavator battery.

BObserve Following Guidelines when

Starting with an Auxiliary Battery

1. Bring the helping machine with the same battery voltage as near as possible to the excavator. THE MACHINES MUST NOT COME IN CONTACT WITH EACH OTHER.

2. Bring the levers and pedal of both vehicles in the neutral position and put the pilot control lock lever in the "LOCKED" position.

3. Wear eye protection and rubber gloves.

4. Open the side cover. (See "Opening/Closing of the Side Cover" in "MAINTENANCE" section.)

5. Ensure the vent caps are securely in place (if equipped).

6. Connect the terminal of the red jumper cable with the plus (+) terminal of the low battery and connect the other end of the cable to the plus (+) terminal of the auxiliary battery.

7. Connect the black negative cable to the minus (-) terminal of the auxiliary battery.

8. Connect the other end of the black cable (coming from the auxiliary battery) to the excavator frame as far away as possible from the low battery.

9. Start the engine of the helping machine and let it run for a while. Start the excavator with the low battery.

10.Disconnect the jumper cables in the reverse sequence (Steps 8, 7, 6).

(1) Stop button (2) Starter key

Page 42

OPERATION OF THE ENGINE20

11.Replace the vent caps.

(1) Low battery (2) Jumper cables (3) Auxiliary battery

A This excavator has a negative (-) ground 12 Volt

starting system.

A Use only the same voltage when using an auxiliary

battery.

A Using a higher voltage will cause serious damage to

the electrical system. When using an auxiliary battery, only the compatible (same) voltage is permissible.

Page 43

EXCAVATOR OPERATION

RUNNING-IN OF THE NEW EXCAVATOR

The operation and care of the new excavator influences its life span. Your new excavator has been carefully checked and tested before leaving the factory. In spite of this, all movable components must run-in during the first 50 work hours. Do not work with full rpm's and full loads during this period. It is most important to run-in your excavator properly in order to achieve its full performance and longevity. During the running-in, the following points should be adhered to in all cases.

BDo not Work with Full Engine Rpm's or

Full Loads during the First 50 Working Hours

A Let the engine warm up sufficiently in the cold season. A Do not let the engine rev-up more than necessary.

STARTING

1. Adjusting the Operator's Position.

BOperator's Seat

To avoid personal injury or death: A Make sure that the seat is completely secured

after each adjustment.

A Do not allow any person other than the driver to

ride on the excavator.

21EXCAVATOR OPERATION

BOil Change in the Run-in Stage

The lubrication oil plays a specific and important role during the run-in phase of the excavator. The numerous movable parts are not yet run-in, so many fine metal particles are generated and cause damage and shorten the life of many components. Pay attention to the oilchange intervals and complete them sooner than later. See "REGULAR CHECKS AND MAINTENANCE WORK" section for more details on the oil-change intervals.

BSeat Belt

To avoid personal injury or death: A Always use the seat belt with a ROPS/OPG (Top

Guard Level I) protection structure. Adjust the seat to the optimal position and buckle up.

(1) Backrest adjustment lever (2) Weight indicator (3) Spring adjustment lever (4) Horizontal seat adjustment lever

C Horizontal seat adjustment (seat stand-off)

Pull the horizontal seat adjustment lever up and move the seat to the desired position by moving it forward or back, then release the lever.

A Check that the seat is locked into place.

C Spring adjustment (driver's weight)

1. The seat can be set to the weight of the driver with the lever. The weight indicator is provided as an adjustment aid.

2. Pressing down the lever increases the spring tension (suitable for heavier operators), pulling the lever upward reduces spring tension (for lighter operators).

3. Adjust the seat so that a comfortable cushioning is achieved.

(1) Seat belt

Page 44

EXCAVATOR OPERATION22

C Backrest adjustment

Take the load off the backrest and pull up the backrest adjustment lever. Set the backrest to the desired sitting position and release the lever. The backrest should be adjusted so that the operator can safely operate the control levers with the back resting completely on the backrest.

2. After starting the engine, bring the pilot control lock lever into the "UNLOCK" position to use drive lever or control lever for front attachments.

BPilot Control Lock Lever

To avoid personal injury or death: A To avoid injuries, check safety aspects all

around the excavator.

A If the pilot control lock lever is pulled down, the engine

will fail to start.

If you try to start the engine with the key with the pilot control lock lever down, the " " lamp (yellow) starts flashing.

(1) Working light switch

C Night operation

To avoid personal injury or death: A When the working light alone do not provide

sufficient visibility, prepare additional stationary artificial lighting and observe safety rules for night work.

BTravel Buzzer

When you handle the drive levers, the buzzer sounds at the same time or before the excavator starts to run.

BBeacon Light Switch

A The rotary beacon (accessory) is switched on with this

button.

The excavator is equipped only with the switch (including the coupler for connecting in a rear left speaker). Beacon is not standard equipment, therefore please install when required.

(1) Pilot control lock lever (A) "UNLOCK"

(B) "LOCKED"

A Always pull pilot control lock lever up to "LOCKED"

position (B) when you stop the engine or leave the operating structure.

BWorking Light Switch

When the starter switch is in position "RUN", the light(s) will be switched on by pressing the switch.

(1) Beacon light switch

Page 45

TWO PATTERN SELECTION SYSTEM (TPSS)

To avoid personal injury or death: A Study control lever pattern A and pattern B.

Then choose the one which is most familiar.

A Position the pattern selector lever (located on

the right side of operator's seat) in either the backward position (Pattern A) or the forward position (Pattern B).

A Engage the lever lock to prevent accidental

pattern change.

A Familiarize yourself with the pattern selected

by operating slowly.

BPattern Change

Moving the pattern selector lever backward until the red knob is locked in position, will activate pattern A. Moving the pattern selector lever forward until the red knob is locked in position, will activate pattern B.

Lever

Position

Pattern A

Pattern B

Attachment

Control Lever

(Left)

Boom down

Boom up

Swing left

Swing right

Arm out (up)

Arm in (crowd)

Swing left

Swing right

23EXCAVATOR OPERATION

Attachment

Control Lever

(Right)

Arm out (up) Arm in (crowd) Bucket crowd Bucket dump

Boom down Boom up Bucket crowd Bucket dump

(1) Pattern selector lever (Two Pattern Selection System: TPSS) (2) Red knob

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.

(A) "Pattern A" (B) "Pattern B"

Page 46

EXCAVATOR OPERATION24

OPERATION OF THE BOOM

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

OPERATION OF THE ARM

Pull back the attachment control lever and the arm will be pulled in. To move the arm out, push the control lever towards the front.

A When pulling in the arm, the movement may stop for a

short moment when the arm is in its vertical position. This is caused by the combined load of the arm and bucket moving the cylinder piston away from the hydraulic flow causing a delay in the cylinder action, until the flow catches up with cylinder piston. This is a characteristic of the hydraulic system and is not a sign of malfunction.

(A) ( ) Boom down (B) ( ) Boom up

A When lowering the boom, make sure that it does not

hit the dozer and that the bucket teeth do not touch the dozer.

(A) ( ) Arm out (up) (B) ( ) Arm in (crowd)

Page 47

OPERATION OF THE BUCKET

To dig using the bucket, move the right attachment control lever from the neutral position, left. Moving the control lever right, moves the bucket outwards and dumps its contents.

( ) Bucket crowd () Bucket dump

SWIVEL(UNIT SWING)OPERATION

25EXCAVATOR OPERATION

BOOM SWING OPERATION

1. Flip the pedal lock up to unlock the pedal.

2. Step on the left side of the pedal ( ) to swing the boom to the left.

3. Step on the right side of the pedal ( ) to swing the boom to the right.

To avoid personal injury or death: A When working in groups, always let the others

know what you are going to do before you do it.

A Keep others away from the machine working

area.

A Do not operate the left attachment control lever

abruptly from right to left (or vice versa). Because of the low of inertia, this causes an impact load on the swing gear and the swing motor. Additionally, the life of the excavator will be shortened.

1. Move the control lever to the left and the upper structure will turn to the left.

2. Move the control lever to the right and the upper structure will turn to the right.

(1) Boom swing pedal (2) Pedal lock

(A) Swing left (B) Swing right

Page 48

EXCAVATOR OPERATION26

OPERATION OF THE DOZER

1. To raise the dozer, pull back the control lever. Pushing the control lever forwards lowers the dozer.

(1) Dozer control lever (2) Dozer

2. While undertaking earth moving work, control both drive levers with left hand and the dozer control lever with right hand.

(A) "Raise" (B) "Lower"

C Operating auxiliary port 1

To avoid personal injury or death: A Check not only indicator for auxiliary port but

also function before you start to operate the machine.

A The proportional control enables you to smoothly

control the implement speed. Example: If you press the rocker switch halfway to the left, the implement moves at approximately half speed.

1. Turn the starter key to the "RUN" position. Let the engine warm up after start-up for approx. 10 minutes under no load conditions.

AUX PORT OPERATION

The excavator is equipped with a hydraulic auxiliary ports. The auxiliary port function is controlled with the rocker switch for auxiliary port.

(1) Auxiliary port

(1) Starter switch (A) "STOP"

(B) "RUN" (C) "START"

2. Lower the pilot control lock lever (UNLOCK).

(1) Pilot control lock lever (A) "UNLOCK"

(B) "LOCKED"

Page 49

3. Push the enable switch for auxiliary port (switch 1). Check the indicator for auxiliary port lights up.

(1) Enable switch for auxiliary port (switch 1) (2) Indicator for auxiliary port

4. Press rocker switch for auxiliary port in the direction right (A), then the oil flows to the right connector (A) of the arm. Press rocker switch for auxiliary port in the direction left (B), then the oil flows to the left connector (B) of the arm.

27EXCAVATOR OPERATION

BOne-way Hold Switch

Operating the one way hold switch results in a continuous oil flow to the auxiliary port connector to the left of the arm. When you operate it again, the oil flow discontinues. Thus, you can operate, for example, an attachment without having to continuously hold down the button. Before operating the one way hold switch press the rocker switch for auxiliary port to left and keep the position.

(1) One way hold switch

(1) Rocker switch for auxiliary port (A) Port A

(B) Port B

A One way hold operation needs an 1-way circuit to

reduce the back pressure (see page 33).

Max. Flow Volume Theoretical L/min. (US gal/min.)

Max. Pressure MPa (kgf/cm ) [psi]

48.0 (12.8)

21.6 (220) [3133]

A When the AUX port is not used for a long period, dirt

particles can settle in the lower part of the AUX port lines. When the plugs on the AUX port lines are removed to connect attachments, drain approx. 100 cc (3.4 oz) of oil per side. For breaker choices, contact your dealer.

Page 50

EXCAVATOR OPERATION28

DRIVING

To avoid personal injury or death: A Before starting the engine, make sure that no

one is near the excavator.

A Before operating the excavator, check the track

direction. (Idler and dozer to the front of the excavator).

A Recommended technique for working on a

slope.

1. Adjust the engine speed from idling to an intermediate speed.

2. Unlock the pilot control lock lever.

3. Raise the dozer and hold the bucket about 20 to 40 cm (8 to 16 in.) over the ground.

(A) "Front"

A Use extra caution when traveling across a

slope or working sideways on a slope.

(1) Pilot control lock lever (A) "UNLOCK"

(A) 20 to 40 cm (8 to 16 in.)

Page 51

BDrive Levers (Right, Left)

To avoid personal injury or death: A If the swing frame has been turned 180 , i.e. the

dozer blade is, seen from the operator, "behind", then the travel direction is opposite to the drive direction of the levers (when activating the drive lever forwards, the excavator, seen from the operator, will move backwards).

Pushing the drive lever forward, moves the excavator forward, and vice-versa. The front of the excavator is the direction where the dozer is present.

29EXCAVATOR OPERATION

To avoid personal injury or death: A When lifting the machine with an attachment,

place a safety block or safety post to prevent the machine from turning over. Keep the pilot control lock lever in the "LOCKED" position.

(1) Drive lever (left) (2) Drive lever (right)

(A) "Forward" (B) "Backward"

A If the tracks are clogged with sand or gravel while

working on soft ground, lift up one track with the help of the boom, arm and bucket and let the track rotate to shake off the sand and gravel.

To avoid serious injury or death: A Do not work under the machine in this

condition.

BThrottle Lever

At the operator's seat,

1. Move the throttle lever to the "FAST" position, and the engine speed increases.

2. To stop the engine, push the throttle lever fully to the "SLOW" position and turn the starter switch to the "STOP" position.

(1) Throttle lever (A) "FAST"

(B) "SLOW"

Page 52

EXCAVATOR OPERATION30

BTravel Speed Switch

Travel speed will increase when this switch is pushed down. Switching the dual travel speed:

1. Press the travel speed switch. The buzzer beeps and the travel speed changes from first speed to second. The symbol lights up.

2. Press the travel speed switch again, and the buzzer beeps and the travel speed changes from second speed to first. The symbol light goes out.

A Do not activate the travel speed switch when there is

increased drive resistance (e.g. driving on inclines or on uneven grounds).

A If the tracks are clogged with sand or gravel while

working on soft ground, lift up one track with the help of the boom, arm and bucket and let the track rotate to remove the sand and gravel.

A The U27-4 HI model is equipped with an automatic

switching mechanism controlled by the torque, which automatically shifts the drive engines from travel speed into the more comfortable low speed when driving at lower speeds with a heavy load or when turning, for example. However, for safety reasons, shifting back up into travel speed must always be done manually using the travel speed switch.

TURNS

To avoid personal injury or death: A Do not change direction on steep slopes, or the

excavator could tip over.

A Before changing direction, beware of people in

the work area.

(1) Travel speed switch (2) Speed indicator lamp

A When activating the travel speed switch, it must be

pushed down completely.

A Each time the travel speed switch is pressed, the

travel speed is switched between first and second.

BPivot Turn

A Movement as illustrated shows the turning directions

with the dozer blade in the front.

C Change of Direction while Stationary

1. Push the left drive lever forward; the excavator will turn in the direction of the arrow of the illustration below.

2. Pull the left drive lever backward; the excavator will turn in the direction of the arrow of the illustration below.

Page 53

C Change of Direction while Travelling

1. While travelling forwards, bring the left drive lever in the neutral position; the excavator will turn in the direction of the arrow of the illustration below.

31EXCAVATOR OPERATION

(B) "Travelling backward" (N) "Neutral position"

BSpin Turn

When both drive levers are activated in the opposite directions, both track will rotate with the same speed but in opposite directions. The center of rotation is the center of the excavator.

(A) "Travelling forward" (N) "Neutral position"

2. While travelling backwards, bring the left drive lever in the neutral position; the excavator will turn in the direction of the arrow of the illustration below.

(A) "Left spin turn"

(B) "Right spin turn"

Page 54

EXCAVATOR OPERATION32

UP AND DOWNHILL TRAVELLING

To avoid personal injury or death: A When travelling up or down a slope, use extra

caution and follow the instructions below.

While travelling uphill, keep the lower edge of the bucket approx. 20 to 40 cm (8 to 16 in.) above the ground. Although the KUBOTA excavator will not slip easily because of the crawlers, it is safer to let the bucket slide over the ground while travelling downhill. Always choose slow speed for uphill and downhill travelling.

[UPHILL TRAVELLING]

PARKING ON A SLOPE

To avoid personal injury or death: A When the excavator is parked or left

unattended on a slope, be sure to put the tip of the bucket into the ground and place all control levers in neutral position, then brace the tracks with chocks.

(1) Chock

[DOWNHILL TRAVELLING]

(A) 20 to 40 cm (8 to 16 in.)

PARKING

To avoid personal injury or death: A Do not keep the bucket or dozer in an elevated

position, as a person could accidentally touch the levers and cause serious accidents.

1. Park the machine on hard flat ground. Stand the arm vertically and lower the bucket to the ground.

2. Turn the throttle potentiometer fully to low speed and idle the engine for about 5 minutes to cool it off gradually.

3. Turn the starter switch to "STOP", stop the engine, then remove the key.

4. Pull the pilot control lock lever up to the "LOCKED" position.

5. When leaving the machine, close all covers and lock.

Page 55

1-way or 2-way CIRCUIT SELECTION VALVE OPERATION

A selection valve which selects 1-way or 2-way circuit of AUX port has been installed on the hydraulic tank.

1. When equipment which needs a 1-way circuit will be used, position the arrow, by using the selector lever, on the axis of the selection valve to the 1-way circuit position, to reduce the back pressure.

2. When equipment which needs a 2-way circuit will be used, position the arrow on the axis of the selection valve to the 2-way circuit position.

A 1-way circuit.....

A 2-way circuit.....

HAMMER etc. THUMB, TILT BUCKET, AUGER, GRAPPLE etc.

33EXCAVATOR OPERATION

To avoid personal injury or death: A Stop the engine before removing/changing the

equipment.

A Release pressure in the hydraulic system

before removing/changing the equipment. (See "HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM".)

A Position the selection valve to the correct

position (either 1-way or 2-way circuit selection) before mounting the equipment.

A Always select the correct valve position before

mounting the equipment (1-way or 2-way circuit selection) to avoid sudden movement of the equipment.

A Leaving the selection valve to 1-way circuit selection

and attaching 2-way circuit equipment may cause the equipment to move (drop) suddenly due to its own weight, as the tank line remains open, even with the engine off.

(1) Swivel frame cover

(1) Selector lever (A) "1 way"

(B) "2 way"

Page 56

EXCAVATOR OPERATION34

IMPORTANT INFORMATION ON EXCAVATOR OPERATION

A Do not try to crush concrete or boulders using side

swings with the bucket. Also avoid using side sweeps of the bucket to move earth piles.

A Under all circumstances avoid the following

operations: A Excavation using the gravitational impact of the

machine.

A Compacting of gravel or soil using the dropping

action of the bucket.

A Excavation using the traveling power of the

machine.

A Do not try to drop or shake off soil adhering to the

bucket in the manner given in the points below. This can cause damage to the machine. Adhering soil can be shaken off when the bucket is being emptied by moving the bucket out to the maximum stroke of the cylinder. Should this not suffice, swing out the arm as far as possible and operate the bucket back and forth.

A Do not hit the dozer with the boom cylinder!

Make sure that the boom cylinder does not hit the dozer when doing deep excavation. If necessary swing around so that the dozer is in the back of the machine.

A Pay attention when pulling in the bucket!

When pulling in the bucket (for driving or transportation) avoid hitting the dozer.

A Avoid collisions!

When moving the excavator, pay attention that the dozer does not collide with obstructions such as boulders, etc. Such collisions shorten the life of the dozer and the cylinder substantially.

A Support the machine correctly!

When stabilizing the machine with the dozer, lower the dozer to engage the full width on the ground.

A If the water or mud level reaches higher than the top of

the tracks, the swivel bearing, swivel motor gear and ring gear may be exposed to mud, water and other foreign objects. The excavator must be properly pressure washed after each use. A Thoroughly clean the area around the swivel

bearing, swivel motor gear and ring gear to remove foreign objects.

A Inspect the swivel motor oil sump (if equipped) for

water contamination. If water is present, refer to operator's manual for lubricant replacement procedure.

A Refer to operator's manual for proper swivel

bearing, swivel motor gear and ring gear lubrication procedures.

A Reinstall any protective covering if removed

earlier.

HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM

1. Lower the attachments and the dozer blade to the ground.

2. Turn the key to "STOP" position and shut off the engine.

3. Wait until the engine has come to a standstill.

4. Turn the key to "RUN" position.

A Do not start the engine.

5. Set the pilot control lock lever to "UNLOCK" position.

6. Move control levers for front attachment (left and right) several times to limit stop in all directions.

7. Set the potentiometer to the maximum flow rate.

Then the hydraulic system has been depressurised.

(1) Pilot control lock lever (A) "UNLOCK"

(B) "LOCKED"

(1) Control lever for front attachment (Left) (2) Control lever for front attachment (Right) (3) Potentiometer for auxiliary port (4) Rocker switch for auxiliary port

Page 57

35TRANSPORTING THE EXCAVATOR ON A TRUCK

TRANSPORTING THE EXCAVATOR ON A TRUCK

B Transporting on a Truck

To avoid serious injury or death: A No directional changes should be made when

the excavator is on the ramp. Should a change of direction be necessary, drive off the ramp completely and make the turn.

A When driving forwards or backwards onto the

truck, or when swinging the upper body, make sure that neither the cabin or the gates of the truck will be damaged.

To avoid personal injury or death: A After loading the machine on the truck, lower

the bucket and dozer onto the truck bed.

Prepare a platform to load or unload the excavator. Take following steps when using ramps.

1. Apply the parking brakes of the truck, and block the drive wheels from both sides.

A When the excavator reaches the point between

the ramps and the truck bed, halt and then move very slowly until the excavator reaches the horizontal position.

A Move the excavator onto the truck only with the

arm completely pulled in. Otherwise the truck cabin could be damaged when swinging around the upper body.

A Do not jack up the machine using its boom to

load or unload the excavator from the truck. Dangerous situation could arise.

2. Use mounting brackets to secure the ramp properly. Connect the ramps directly to the truck bed.

(A) 4 x H or more (B) 20 to 40 cm (8 to 16 in.)

3. For additional safety, use blocks or supports under the ramps and the truck bed.

4. Align the ramps and the tracks and then drive the excavator slowly up the ramps with the dozer in the front. After ensuring that the tracks are completely on the truck bed, swivel the upper body around to the back of the truck.

Page 58

TRANSPORTING THE EXCAVATOR ON A TRUCK36

5. Block the tracks and tie down the excavator with suitable chains and approved method (check appropriate state regulation).

(1) Chain (2) Block

6. Before unloading, raise the dozer and bucket from the truck bed.

B Towing the machine

To avoid personal injury or death: A When towing the excavator or pulling a load

must be less than the strength of the towing line attached to excavator. Not to be used for tie-down or lifting the machine.

A Towing is only allowed over a short distance

and at walking speed.

1. Attach the tow bar or towing rope to the hook on the excavator and to the pulling vehicle. The tow bar should be mounted at a right angle to the vehicles.

2. The operator must be seated during the recovery procedure.

3. Drive slowly with the tractive vehicle to avoid abrupt loads.

(1) Tow line

Page 59

LIFTING OF THE EXCAVATOR

C General guidelines for lifting

1. Lifting position. (see illustration)

To avoid serious injury or death: A The correct instructions for safe handling are

described here. Read these instructions carefully before moving the machine. Make sure that the operating personnel read the operator's manual carefully.

B Basics when Lifting with Cables or Straps

1. The lifting and crane operation is to be undertaken according to the guidelines described.

2. The equipment used for lifting mentioned in these instructions are only given as reference, the standards concerning strength, control and other details are based on the respective applicable guidelines.

(1) Pull in the boom towards rear. (2) Pull in the arm completely. (3) Pull in the bucket completely. (4) Adjust the swing angle to the center. (to bring the

boom in a position parallel to the machine frame)

(5) Swing frame so that dozer blade is to the rear and

frame is parallel with tracks.

(6) Raise the dozer blade fully.

[Blade ends]

37LIFTING OF THE EXCAVATOR

B Safety Aspects when Lifting with Cables

or Straps

Abide by following steps when lifting:

1. Do not lift loads that exceed the maximum load capacity of the crane.

2. Choose correct equipment suitable to the weight, size and form of the load.

3. First assess the center of gravity of the load, position the hook directly over the load and lift the load so that the center of gravity of the load is as low as possible.

4. The steel cables or straps must be fixed in the middle of the hook.

5. The load must be lifted vertically from the ground.

6. Do not enter the working area under suspended loads and do not move the load over people. The load must only be moved in an area where the balance can be easily maintained.

B Lifting Procedure for the Excavator

To avoid personal injury or death. A Do not use the hooks on the roof of canopy or

cabin for lifting the excavator.

A The excavator may only be lifted at the points

provided. Do not attach the lifting gear to any other eyes or areas as this can lead to substantial damage.

(1) Shackle

[Boom top]

(1) Shackle

Page 60

LIFTING OF THE EXCAVATOR38

2. Attaching the steel cables or straps. (1) Always hook the excavator at three points. (one

on the boom and right and left of the dozer)

(2) Always use a shackle on each lifting hole when

attaching the cables or straps.

(3) Use protective material at all places where the

cables or straps contact the machine.

(4) Keep the angle between the front and rear cables

or straps within. 30 (0.52 rad.).

(1) Steel cable (2) Shackle (3) Protective material

(A) 30 (0.52 rad.) or less

3. Tackle The weights of the excavators and the recommended tackle for lifting these loads are mentioned in the following table. Choose components having enough strength.

Excavator Weight* 2520 kg (5561 lb)

Load / Cable 8500 N (866.7 kgf) [1911 lbf]

Minimum Cable Diameter (Safety factor=6)

12.5 mm (0.49 in.) or more

*Excavator Weight: With canopy, steel tracks. Steel cable: 6X24

4. Lifting (1) Lift slowly and safely (2) Do not enter the excavator area when lifting. (3) Lift the excavator horizontally. (Modify cable or

strap connections according to needs) Maximum strength for example: (ISO 4344: 2004) - "6X24"

Diameter zinc-plated not zinc-plated

10 mm (3/8)

12.5 mm (1/2)

14 mm (9/16)

16 mm (5/8)

18 mm (45/64)

45.8 kN

(4670 kgf)

[10296 lbf]

71.5 kN

(7290 kgf)

[16072 lbf]

89.7 kN

(9146 kgf)

[20163 lbf]

117 kN

(11930 kgf)

[26301 lbf]

148 kN

(15091 kgf)

[33270 lbf]

49.3 kN

(5027 kgf)

[11083 lbf]

77 kN

(7851 kgf)

[17308 lbf]

96.6 kN

(9850 kgf)

[21716 lbf]

126 kN

(12848 kgf)

[28325 lbf]

160 kN

(16315 kgf)

[35968 lbf]

Page 61

MAINTENANCE

MAINTENANCE INTERVALS

39MAINTENANCE

No. Check points Measures

1 Coolant

2 Fuel check Daily check 44

3 Engine oil

4 Hydraulic oil

5 Lubrication points - Daily check 46

6 Fan belt tension

7 Radiator and oil cooler check Daily check 47

8 Engine and electrical wiring check Daily check 48

9 Fuel tank, Fuel filter drain every 50 hrs 49

10 Water separator drain every 50 hrs 49

11 Battery condition check every 50 hrs 50

12 Greasing swing bearing teeth - every 50 hrs 51

13 Radiator hoses and clamps

14 Air filter element

15 Greasing swing ball bearing - every 200 hrs 53

16 Fuel line and Intake air line

17 Pivot valve - every 250 hrs 54

18 Engine oil filter replace every 500 hrs 55 *5

19 Drive unit oil change every 500 hrs 56 *5

20 Fuel filter cartridge replace every 500 hrs 56 *5 @

21 Hydraulic return filter element replace every 500 hrs 57 *5

22 Hydraulic suction filter element replace every 1000 hrs 58 *5

23 Fuel injection nozzle injection pressure check every 1500 hrs 59 *4 @

24 Front idler and track roller oil change every 2000 hrs 59 *5

25 Alternator and starter motor check every 2000 hrs 59

26 Injection pump check every 3000 hrs 60 *4 @

27 Radiator system rinse every 2 years 60

Outer element

Inner element replace every 1000 hrs 59 *2

check Daily check 43

change every 2 years 60

check Daily check 44

change every 500 hrs 54 *5

check Daily check 45

change every 1000 hrs 58 *1

check Daily check 47

adjust every 200 hrs 51

check every 200 hrs 52

replace every 2 years 60

clean every 200 hrs 52 *2

replace every 1000 hrs 59 *2

check every 200 hrs 53

replace every 2 years 61 *3

50 100 150 200 250 300 350 400 450

Hour meter indicator

Intervals

Ref.

page

D 500 thru 1000 continued to the following table.

Page 62

40 MAINTENANCE

No. Check points Measures

1 Coolant

2 Fuel check Daily check 44

3 Engine oil

4 Hydraulic oil

5 Lubrication points - Daily check 46

6 Fan belt tension

7 Radiator and oil cooler check Daily check 47

8 Engine and electrical wiring check Daily check 48

9 Fuel tank, Fuel filter drain every 50 hrs 49

10 Water separator drain every 50 hrs 49

11 Battery condition check every 50 hrs 50

12 Greasing swing bearing teeth - every 50 hrs 51

13 Radiator hoses and clamps

14 Air filter element

15 Greasing swing ball bearing - every 200 hrs 53

16 Fuel line and Intake air line

17 Pivot valve - every 250 hrs 54

18 Engine oil filter replace every 500 hrs 55 *5

19 Drive unit oil change every 500 hrs 56 *5

20 Fuel filter cartridge replace every 500 hrs 56 *5 @

21 Hydraulic return filter element replace every 500 hrs 57 *5

22 Hydraulic suction filter element replace every 1000 hrs 58 *5

23 Fuel injection nozzle injection pressure check every 1500 hrs 59 *4 @

24 Front idler and track roller oil change every 2000 hrs 59 *5

25 Alternator and starter motor check every 2000 hrs 59

26 Injection pump check every 3000 hrs 60 *4 @

27 Radiator system rinse every 2 years 60

Outer element

Inner element replace every 1000 hrs 59 *2

check Daily check 43

change every 2 years 60

check Daily check 44

change every 500 hrs 54 *5

check Daily check 45

change every 1000 hrs 58

check Daily check 47

adjust every 200 hrs 51

check every 200 hrs 52

replace every 2 years 60

clean every 200 hrs 52 *2

replace every 1000 hrs 59 *2

check every 200 hrs 53

replace every 2 years 61 *3

500 550 600 650 700 750 800 1000

Hour meter indicator

Intervals

Ref.

page

*1 *5

First operation *1 When using a hydraulic breaker, change hydraulic oil and return filter according to the table on "Hydraulic Oil Change (Including Exchange of the Suction Filter in the Hydraulic Tank)" in "EVERY 1000 SERVICE HOURS" in

"REGULAR CHECKS AND MAINTENANCE WORK" section. *2 Clean and replace the air filter more frequently if used under dusty conditions. When the filter is very dirty from dusty conditions, replace the filter. *3 Replace only if necessary. *4 Consult your local KUBOTA dealer for this service. *5 The maintenance identified with "*5" is appeared on the meter panel at each specified maintenance hours. A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA

non-road emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction. Please see the warranty Statement in detail.

Page 63

41MAINTENANCE

OPENING AND CLOSING OF PARTS

BOpening and Closing of the Fuel Tank Cap

To open the fuel tank cap, turn clockwise. To close it, turn counterclockwise.

(1) Fuel tank cap

BOpening/Closing of the Engine Hood

To avoid personal injury or death:

A Do not open the engine hood with the engine

A Do not touch the exhaust muffler or the

Insert the key into the key slot and turn it clockwise to unlock it. And pull the catch to open the hood. To close the hood, push up the clasp and push the hood until it locks automatically. Turn the key counterclockwise to lock the hood.

running unless in an emergency.

exhaust pipe; serious burns can occur.

(1) Key slot (2) Catch (3) Engine hood

(1) Clasp (A) Push up to close

(A) "LOCK" (B) "UNLOCK"

Page 64

MAINTENANCE42

BOpening/Closing of the Side Cover

1. Insert the starter key in its hole and turn it clockwise to unlock the side cover. Pull and hold up the side cover until it is held by the link.

2. To close the side cover, push up the link, slide it left and lower the side cover until it clicks into its closed position.

3. Turn the starter key counterclockwise to get the side cover locked.

(1) Side cover (2) Key hole

BOpening/Closing of the Radiator Cover

Loosen the wing bolts and pull the radiator cover.

(1) Radiator cover (2) Wing bolt

BOpening/Closing of the Swivel Frame

Cover

(1) Link (A) Push up

(B) Slide left

(1) Swivel frame cover

BWhere to store the Grease Gun

(1) Grease gun storage

Page 65

BWhere to keep Operator's Manual

(1) Operator's manual storage

BCup Holder

43MAINTENANCE

BChecking Coolant Level

To avoid personal injury or death:

A Move the excavator to even ground. A Make sure that the engine is turned off. A Do not open the radiator cap right after the

engine has been stopped; Serious burns can occur from contact with escaping hot coolant fluid.

A Check the coolant level in the recovery tank

only after the engine has cooled down.

A Remove the radiator cap only if absolutely

necessary.

1. Check to see that the coolant level is between the "FULL" and "LOW" marks of the recovery tank.

2. When the coolant level drops due to evaporation, add water only up to the full level. In case of leakage, add anti-freeze and water in the specified mixing ratio up to the full level. (See "Changing Radiator Coolant" in every 2 years maintenance.)

(1) Cup holder

DAILY CHECKS

To avoid personal injury or death: A When operating, keep hands and body inside

of the ROPS / OPG (Top Guard Level I) protective envelope.

A Do not touch the control levers and the pedals

from outside the cab while the engine is running.

For your own safety and to assure the long life of your machine, a careful check should be made before each operation.

(1) Recovery tank (A) "FULL"

(B) "LOW"

A Do not fill the recovery tank over the "FULL" marking. A Do not fill with dirty or salty water.

Radiator 2.4 L (0.54 US gal)

Coolant capacity

Recovery tank 0.6 L (0.16 US gal)

Page 66

MAINTENANCE44

BChecking Fuel Level

To avoid personal injury or death:

A Stop the engine and remove the key before fuelling. A Do not smoke while fuelling.

A By temperatures over -5 (+23 ), use No.2-D diesel

fuel, when temperatures are under -5 (+23 ), use No.1-D diesel fuel.

A Make sure that the fuel tank will not run empty. Air will

enter the fuel system, and must be purged before restarting the engine.

A See "PURGING FUEL SYSTEM" in "OTHER

ADJUSTMENTS AND REPLACEMENTS" section.

A To prevent condensation (water) accumulations in the

fuel tank, fill the fuel tank full before parking overnight.

1. Turn the starter key to the position "RUN".

2. Check the fuel level by the fuel level indicator.

Fuel tank capacity 33 L (8.7 US gal)

BChecking Engine Oil Level

To avoid personal injury or death: A Stop the engine and remove the key before

checking the oil level.

A Use engine oil with the correct viscosity. (according to

the outside temperature)

A After stopping the engine and remove the key, wait 5

minutes, then check oil level. (Excavator must be on level ground.)

Insert the engine oil dipstick fully into the respective port opening, remove again and check the oil level; if necessary fill with oil. The machine must be on level ground when checking the oil level.

(1) Fuel gauge (A) "EMPTY"

(B) "FULL"

3. Open the tank cap, and add fuel.

(1) Fuel tank cap

(1) Engine oil dipstick (A) Required level

(2) Oil filling port

Page 67

BChecking Hydraulic Oil Level

To avoid personal injury or death: A Stop the engine and remove the key before

checking the oil level.

A Before filling oil, wipe away all sand and dust from

around the oil port. Make sure to use an identical type of hydraulic fluid.

A The excavator has been filled with hydraulic fluid

before delivery. See "RECOMMENDED OILS" section. (Do not mix different oils.)

45MAINTENANCE

4. Should the oil level be too low, fill oil through the oil port before starting the engine. This step is important for the protection of the hydraulic system.

1. Park the excavator on a firm, flat and level surface. Lower the attachments and dozer blade to the ground and stop the engine.

2. Check the oil level as to whether it lies on the center of the gauge at normal temperature (10 to 30 ).

3. Enough oil is present if the oil level lies near the center of the gauge.

(1) Gauge

(1) Tank cap

Hydraulic oil capacity

Hydraulic tank 22 L (5.8 US gal)

Whole oil volumes 37 L (9.78 US gal)

Page 68

MAINTENANCE46

BLubrication Points

To avoid personal injury or death: A First lower all attachments on the ground then

stop the engine and remove the key.

A While greasing, take care not to step on the

bucket teeth.

A When doing excavation work in water, generously

grease the following points. After ending work, grease again.

Grease the marked grease fittings shown by arrows in the illustration below.

1. Boom bottom linkage............................. 1 place

2. Arm bottom linkage................................ 1 place

3. Bucket link pin (or boss)......................... 3 places

4. Boom cylinder boss............................... 2 places

5. Arm cylinder boss.................................. 2 places

6. Bucket cylinder boss.............................. 2 places

7. Arm top linkage...................................... 1 place

8. Swing cylinder boss............................... 1 place

9. Swing cylinder bottom............................ 1 place

10. Swing pin............................................... 2 places

11. Dozer cylinder boss............................... 2 places

12. Dozer linkage pin................................... 2 places

Page 69

BCheck Fan Belt

To avoid personal injury or death: A Stop the engine and remove the key before

checking the fan belt.

A Check the fan belt for cracks and proper

tension. (See "Checking Fan Belt Tension" in "REGULAR CHECKS AND MAINTENANCE WORK" section.)

BChecking Radiator and Oil Cooler

To avoid personal injury or death: A Always stop the engine and remove the key

before checking the radiator.

A Wear eye protection when cleaning with

compressed air.

47MAINTENANCE

1. Check if the fins and ribs are clogged. If so clean with compressed air or steam.

2. Check the rubber hoses for damage and replace if cracked or old. Check if the hose clamps are tight enough.

(1) Radiator (2) Oil cooler

A Radiator and oil cooler fins and ribs must be clean in

order to avoid overheating the engine and to allow free flow of air through the cooling elements.

A Pressure of compressed air must be under 205 kPa

(2.1 kgf.cm , 30 psi)

Page 70

MAINTENANCE48

BChecking Washer Liquid (only for CAB

type)

If the windows washer is switched on with the washer liquid tank empty, the motor may be damaged. Always keep the tank filled.

(1) Washer liquid tank

BChecking and Cleaning Engine and

Electrical Wiring

3. It may cause damage or breakdown of the machine.

Example) (1) Peeling of seals and labels (2) Electronic components, engine Breakdown due to interior infiltration, etc. (3) Damage to rubber, resin and glass parts such as tires, oil seals, etc. (4) Peeling of paint and plated surface

(A) Direct Wash Strictly Prohibited (B) Direct

To avoid personal injury or death: A Always stop the engine and remove the key

before cleaning the wiring, cables and engine.

Before starting, check whether flammable substances have gathered on the battery, the cables and wiring, the muffler or on the engine. Remove thoroughly. Check the electrical circuitry for disconnections, shorts or loose terminals.

BWashing Whole Machine

The incorrect use of a high-pressure wash may result in injuries or cause damage or breakdown of the machine. Use a high-pressure wash according to its instruction manual and labels.

To avoid personal injury: Set the flushing nozzle to diffusion so as not to damage the machine, then wash from 2m away. Washing directly or from a close range may cause following.

1. It may damage the coating on the electrical wiring or disconnect the wires, which may cause fire.

2. Damage to the hydraulic hose may cause high pressure oil to be ejected and cause injury.

(A) Close-Range Wash Strictly Prohibited (B) Less than 2m

A Do not wash the excavator with the engine running.

Water could enter the air filter and damage the engine. Make sure that the air filter is kept dry.

A Remove the mud before washing the machine.

Page 71

49REGULAR CHECKS AND MAINTENANCE WORK

REGULAR CHECKS AND MAINTENANCE WORK

EVERY 50 SERVICE HOURS

BDraining the Water from the Fuel Tank

To avoid personal injury or death: A Before draining the water from the fuel tank, be

sure to stop the engine and remove the key.

A Do not smoke during inspection.

1. Turn the drain shutoff-valve to "CLOSED" position and remove the drain plug.

2. Turn the drain shutoff-valve to "OPEN" position and drain water.

BDraining Water Separator

1. Open the hood.

2. When the separated water is being drained, the red float moves upward. When the float reaches the indication line, close the

shutoff-valve so that no fuel can run out. Now loosen the ring nut, and remove the cup and empty completely.

3. Clean carefully not to damage the filter element.

4. Finally, do not forget to open the shutoff-valve and close the hood.

(1) Drain shutoff-valve (2) Drain plug

(A) "CLOSED" (B) "OPEN"

(1) Ring nut (2) Cup (3) Shutoff-valve (4) Float (5) Line

(A) "CLOSE"

Page 72

REGULAR CHECKS AND MAINTENANCE WORK50

BBattery

To avoid the possibility of a battery explosion: For refillable type battery, follow the instructions below. A Do not use or charge the refillable type battery

if the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion. Check the fluid level regularly and add distilled water as required so that the fluid level is between the UPPER and LOWER levels.

To avoid personal injury or death: A Never remove the vent caps while the engine is

running.

A Keep electrolyte away from eyes, hands and

clothes. If you are spattered with it, wash it away completely with water immediately and get medical attention.

A Wear eye protection and rubber gloves when

working around the battery.

A Before inspection or dismounting the battery,

be sure to turn off the engine and turn the starter switch to the "STOP" position.

A When removing the battery, always disconnect

the negative ground cable first. When installing a battery, always connect the ground cable last. This prevents a possible explosion caused by sparks.

A Always wear eye protection when working with

the battery.

BBattery Charging

To avoid personal injury or death : A When the battery is being activated, hydrogen

and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery.

A When charging battery, remove battery vent

plugs.

A When disconnecting the cable from the battery,

start with the negative terminal first. When connecting the cable to the battery, start with the positive terminal first.

A Do not check battery charge by placing a metal

object across the terminals. Use a voltmeter or hydrometer.

1. Make sure each electrolyte level is to the bottom of vent wells. If necessary add distilled water in a wellventilated area.

2. The water in the electrolyte evaporates during recharging. Liquid shortage damages the battery. Excessive liquid spill damages the excavator body.

3. To slowly charge the battery, connect the battery positive terminal to the charger’s positive terminal and the negative to the negative one. Then, recharge in the standard fashion.

4. A boost charge is only for emergencies. It will partially charge the battery at a high rate and in a short time. When using a boost-charged battery, it is necessary to recharge the battery as early as possible. Failure to do this will shorten the battery's service life.

5. When the specific gravity of electrolyte falls between

1.27 and 1.29, charge has completed.

6. When exchanging old battery for a new one, use battery of equal specification.

(1) Battery

Battery Type Volts (V) Capacity

56219 12 55 (at 5H.R(A.H))

Reserve

Battery Type

56219 103 550 15

Capacity

(min)

Cold

Cranking

Amps

Normal

Charging

Rate (A)

Page 73

51REGULAR CHECKS AND MAINTENANCE WORK

C Direction for Storage

1. When storing the machine for long periods of time, remove the battery from machine, adjust the electrolyte to the proper level and store in a dry place out of direct sunlight.

2. The battery self-discharges while it is stored. Recharge it once every three months in hot seasons and once every six months in cold seasons.

BGreasing of Swing Bearing Teeth

1. Pump grease with grease gun through the grease fitting.

2. Grease at each 90 (1.58 rad.) position of the swing frame.

3. Fill with approx. 50g of grease (approx. 20 pumps with the grease gun). Distribute the grease over the teeth.

EVERY 200 SERVICE HOURS

Do all 50 hour servicing at the same time.

BChecking Fan Belt Tension

C Check and adjustment of the fan belt tension

To avoid personal injury or death:

A First stop the engine and remove the key. A After servicing, make sure to replace the belt

cover in its original position.

1. Press the fan belt down in the middle, with a force of approx. 7 kg (15.41 lbs). The belt tension is correct if it deflects about 7 mm (0.28 in.). If otherwise, loosen nut (1) and bolt (2) and turn bolt (3) clockwise to shift the tension pulley (4) in the direction shown by the arrow.

2. Replace the fan belt if worn out, cracked or torn.

(1) Grease fitting (for Bearing teeth)

(1) Nut (2) Bolt (3) Bolt (4) Tension pulley

A If the engine is run with a loose fan belt, the belt could

slip and cause overheating of the engine or insufficient battery charging. Check fan belt tension regularly.

A Should the fan belt break or jump off, the indicator light

for battery charge will light up. Stop the engine and remove the key immediately.

(A) about 7 mm (0.28 in.) (B) approx. 7 kg (15.41 lbs)

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REGULAR CHECKS AND MAINTENANCE WORK52

BChecking Radiator Hoses and Clamps

To avoid personal injury or death: A Wait long enough for the radiator coolant to

cool down.

Check the water hoses for proper connection. This check should be carried out every 200 hours or every 6 months, whichever comes first.

1. Should the hose clamps become loose or water leaks, tighten the hose clamps properly.

2. Should the radiator hoses become swollen, aged or cracked, they must be replaced and the hose clamps tightened again properly.

BInspection and Cleaning Air Filter Element

Open the engine hood and remove the dust-cover. Take out only outer element, clean the element, case interior and reassemble. During reassembly, take care to install the dust-cover so that its TOP mark (arrow) faces upwards. Do not remove the inner element.

A Should the machine be used in extremely dusty areas,

the air filter element must be inspected and cleaned more frequently than in the specified maintenance periods.

A The air filter has a dry element, keep free from oil. A Do not run the engine without the air filter.

(1) Radiator hoses

(1) Inner element (2) Outer element (3) Dust-cover (4) Clamps

Page 75

53REGULAR CHECKS AND MAINTENANCE WORK

BAir Filter Maintenance

To avoid personal injury or death: A Wear eye protection.

The quickest and safest method of maintenance is the exchange of the paper cartridge. Furthermore there are different methods of cleaning the cartridge.

C Cleaning with compressed air

Pressure of compressed air must be under 205 kPa (2.1 kg/ , 30 psi), and the cartridge should be blown clean from the inside to the outside until the dust deposits are remarkably reduced.

BGreasing Swing Bearing

1. Grease through the respective grease fitting. (at the lower fitting)

2. Grease at each 90 (1.58 rad.) position of the swing frame.

3. Using the grease gun, apply 5 shots at every position.

(1) Grease fitting

BChecking Fuel Line and Intake Air Line

1. Check to see that all lines and hose clamps are tightened and not damaged.

2. If hoses and clamps are found worn or damaged, replace or repair them at once.

A If the air suction is still inadequate, or the colour of the

exhaust gases is abnormal even after the cleaning, the air filter element must be replaced.

(1) Hoses (2) Hose clamps

Page 76

REGULAR CHECKS AND MAINTENANCE WORK54

EVERY 250 SERVICE HOURS

Do all 50 hour servicing at the same time.

BLubrication of the Pilot Valve

Remove the rubber bellows from the underside of the control levers. Grease the tip of the push rod and the rotating part of the link.

(1) Rotating port of the link (2) Tip of the push rod

EVERY 500 SERVICE HOURS

Do all 50 and 250 hour servicing at the same time.

BChanging Engine Oil (Change the engine

oil every 500 hours, or every 1 year in the case that service hour is less than 500 hours)

To avoid personal injury or death: A First stop the engine then remove the key and

wait long enough for the oil to cool down.

1. Remove the drain plug on the underside of the engine and drain all oil.

2. Re-tighten the drain plug.

(1) Drain plug

3. Fill up with new oil through the filling port to the specified level.

(1) Oil filling port (2) Engine oil dipstick

(A) Required oil level range

Page 77

(1) Engine oil dipstick (A) Oil level is acceptable within

this range.

4. Let the engine idle for approx. 5 min. Check the engine oil level. To check the engine oil level, insert the engine oil dipstick completely into the respective port opening and pull out again. If the oil level lies between both markings, no oil must be added.

55REGULAR CHECKS AND MAINTENANCE WORK

BReplacing 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)

1. Replace the oil filter cartridge at the same time as doing the engine oil change.

2. Remove the cartridge with the supplied filter wrench.

A Regardless of the service hours, an engine oil change

is due every 6 month.

Engine oil capacity

(with engine oil filter)

4.4 L (1.16 US gal)

(1) Oil filter cartridge

3. Oil the O-ring of the new oil filter cartridge lightly. Then tighten the oil filter cartridge by hand.

4. Fill engine oil to the specified level.

5. Let the engine run for approx. 5 min. and make sure that the engine oil indicator lamp does not light up. Then stop the engine and remove the key.

6. The engine oil level is reduced by the amount of the filter capacity after the engine is started. It is necessary to add oil.

A Always check the oil level after having exchanged the

filter.

Page 78

REGULAR CHECKS AND MAINTENANCE WORK56

BDrive unit Oil Change(First Oil Change of

the 50 hours)

To avoid personal injury or death: A Lower all attachments to the ground, stop the

engine and remove the key before undertaking the oil change.

1. Rotate the track so that the drain plug of the drive unit is in the bottom position.

2. Remove the drain plug to let the oil run out. Screw in and tighten the drain plug again and fill with gear oil through the oil check port.

3. Fill oil until it overflows out of the oil check port.

Gear oil capacity approx. 0.35 L (0.77 US gal)

Oil change

- first oil change after 50 hrs

- then every 500 hrs

- or at least once a year

4. Use prescribed gear oil SAE 90.

BReplacing Fuel Filter Cartridge

To avoid personal injury or death: A Keep fire away.

1. Remove the filter with the supplied filter wrench.

2. Add fuel to a new filter before installing.

3. Apply a light film of fuel to the seal of the new filter and turn in tightly by hand.

4. Open the shutoff-valve of the fuel filter again.

(1) Oil check port (2) Drain port (3) Filling port

(1) Fuel filter cartridge

A After exchange of the filter, the fuel system must be

purged of air.

Page 79

57REGULAR CHECKS AND MAINTENANCE WORK

BReplacing Hydraulic Return Filter Element

To avoid personal injury or death: A Remove the oil filter element only after the oil in

the hydraulic tank has cooled down.

1. Hold the filter support top and take the filter out of the tank.

2. Loosen the set bolt first and then detach the return filter from its support. Replace the filter with new one.

3. Remove the bolt from the cover. Take out and replace the breather filter with new one.

EVERY 1000 SERVICE HOURS

Do all 50, 200, 250 and 500 hour servicing at the same time.

BReplacing the Hydraulic Pilot Filter

Element

To avoid personal injury or death: A Before replacing the element, wait long enough

for the hydraulic fluid to cool down.

1. Remove four bolt and detach the left side cover.

2. Remove the pilot filter case from the head cover.

3. Wrench and pull out the element downward.

4. Replace the O-ring with a new one.

5. Apply a light coating of clean hydraulic oil to the O-ring and fit it to the case firmly. Be careful not to scratch the O-ring.

6. Fit the case to the head cover.

7. Let the engine run for approx. 3 minutes.

8. Check the oil level of hydraulic oil tank.

(1) Breather filter (2) Cover (3) Return filter (4) Filter support (5) Suction filter

A Always check the oil level when replacing the filter.

(1) Left side cover (2) Bolt

Page 80

REGULAR CHECKS AND MAINTENANCE WORK58

(1) Head cover (2) Element (3) O-ring (4) Case

BHydraulic Oil Change (Including

Replacing of the Suction Filter in the Hydraulic Tank)

To avoid personal injury or death: A Wait long enough for the hydraulic fluid to cool

down. Then begin with the change of the hydraulic fluid.

1. Move the excavator to a level ground and stop the engine. Extend the piston rods of the cylinders halfway out and lower the bucket on the ground.

(1) Cover (2) Suction filter (3) Drain plug

2. Remove the drain plug on the underside of the hydraulic tank and drain the oil.

(1) Drain plug

3. Remove the cover of the hydraulic tank.

4. With a fork wrench or similar, remove and exchange the suction filter.

5. Retighten the drain plug.

6. Fill oil through the oil filling opening on the top side of the tank.

7. Let the engine run for approx. 5 min. and check the oil level again.

Hydraulic oil capacity

Hydraulic tank 22 L (5.8 US gal)

Whole oil volumes 37 L (9.78 US gal)

Page 81

59REGULAR CHECKS AND MAINTENANCE WORK

BHydraulic Oil Check with Hydraulic

Breakers

The hydraulic oil change after 1000 operating hours in the operator's manual is based on normal excavator work. Following inspection measures are valid when hydraulic breakers are used:

1. Changing and filling up of hydraulic oil (1) The hydraulic oil must be changed more often

when breakers are used because the machine is subject to harder conditions than at normal excavating work.

(2) Use only the recommended oils mentioned in the

operator's manual when changing or fill oil.

(3) When filling up oil, do not mix oils of different

makes.

2. Changing the return filter and oil (1) The filter must be changed more often because of

contamination resulting from the frequent

assembly and disassembly of the hoses. (2) Use the correct replacement filter. (3) Oil change according to operating hours.

Hydraulic oil Return filter

Normal excavator work

every 1000 Hrs. every 500 Hrs.

EVERY 1000 SERVICE HOURS OR ONCE A YEAR

BReplacing Air Filter Element

To avoid personal injury or death: A First stop the engine and remove the key.

Open the engine hood and remove the dust-cover. Remove and replace the outer element and inner element with new elements. When reassembling, install the dust-cover so that its TOP mark (arrow) faces up-wards.

Breaker work portion

20% every 800 Hrs.

40% every 400 Hrs.

60% every 300 Hrs.

more every 200 Hrs.

every 200 Hrs.

every 100 Hrs.

(1) Inner element (2) Outer element (3) Dust-cover (4) Clamps

A Shorten the replacement period if the machine is used

in dusty or sandy areas.

EVERY 1500 SERVICE HOURS

BChecking Fuel Injection Nozzle (Injection

Pressure)

Consult your local KUBOTA dealer for this service.

EVERY 2000 SERVICE HOURS

Do all 50, 200, 250, 500 and 1000 hour servicing at the same time.

BChanging Front Idler and Track Roller Oil

A Contact your KUBOTA dealer for details.

BChecking the Alternator and Starter Motor

A Contact your KUBOTA dealer for details.

Page 82

REGULAR CHECKS AND MAINTENANCE WORK60

EVERY 3000 SERVICE HOURS

BChecking Injection Pump

Consult your local KUBOTA dealer for this service.

ANNUAL SERVICING

To avoid personal injury or death: A Always check the wire harness and battery

cord, as damage to these may cause a short circuit.

A Check for dust and fuel deposited on the

battery, wiring, muffler and around the engine as they may cause fire.

BElectrical Wiring and Fuses

Check the terminals periodically for proper connections. Loose wiring or damaged cables can cause improper functioning or short circuiting of the electrical system. Check wiring and replace damaged components immediately. If a fuse blows out soon after having been replaced, contact your nearest KUBOTA dealer. Never use a fuse other than specified.

BChecking the Electrical Circuit

Check the electrical circuitry for disconnections, shorts or loose terminals.

BIENNIAL SERVICING

BReplacement of Radiator Hoses and Hose

Clamps

Replace radiator hoses and hose clamps every two years. If the hoses are swollen, hard or cracked, they must be replaced earlier.

BChanging Radiator Coolant

To avoid personal injury or death: A Do not loosen the radiator cap before the

radiator has cooled down sufficiently. Then only loosen the cap and allow enough time for the pressure in the system to be released. Now remove the cap completely.

A When using anti-freeze, put on some protection

such as rubber gloves. (Anti-freeze contains poison.)

A If you accidentally swallowed anti-freeze, seek

medical attention at once.

A When anti-freeze comes in contact with the

skin or clothing, wash it off immediately.

A Do not mix different types of Anti-freeze. The

mixture can produce chemical reaction causing harmful substances.

A Anti-freeze is extremely flammable and

explosive under certain conditions. Keep fire and children away from anti-freeze.

A When draining fluids from the engine, place

some container underneath the engine body.

A Do not pour waste onto the grounds, down a

drain, or into any water source.

A Also, observe the relevant environmental

protection regulations when disposing of antifreeze.

A If swallowed, anti-freeze is poisonous to

people, animals and birds.

(In case of long-life coolant fluid) Stop the engine then remove the key and wait until it has cooled down completely.

1. Open the drain plug or shutoff-valve on the bottom of the radiator and drain coolant completely.

2. To clean, rinse the radiator with water.

3. Close the drain plug or shutoff-valve and fill the radiator and the recovery tank with coolant fluid. Let the engine idle for about 5 min., stop the engine and check the coolant level then remove the key.

4. The machine has been shipped filled with 50% antifreeze solution.

(1) Radiator hoses

Page 83

(1) Drain plug

61REGULAR CHECKS AND MAINTENANCE WORK

A To fill the radiator system use fresh water and anti-

freeze fluid.

A When the anti-freeze is mixed with water, the anti-

freeze mixing ratio must be less than 50%.

A Tighten the radiator cap properly. If the cap is loosely

or not properly fitted, overheating of the engine can result due to coolant fluid loss.

BReplacing Fuel Hoses and Hose Clamps

Replace the hoses and clamps. (See "Checking Fuel Line and Intake Air Line" in "EVERY 200 SERVICE HOURS")

(1) Radiator cap

(1) Recovery tank (A) "FULL"

(B) "LOW"

Radiator 2.4 L (0.54 US gal)

Coolant capacity

Recovery tank 0.6 L (0.16 US gal)

(1) Fuel lines (2) Clamp bands

BReplacing Intake Air line

Replace the hoses and clamps, if necessary. (See "Checking Fuel Line and Intake Air Line" in "EVERY 200 SERVICE HOURS")

(1) Hoses (2) Hose clamps

A Do not operate the engine without coolant.

Page 84

62 OTHER ADJUSTMENTS AND REPLACEMENTS

OTHER ADJUSTMENTS AND REPLACEMENTS

PURGING OF THE FUEL SYSTEM

1. Fill up the fuel tank with fuel.

2. Turn the starter key to the position "RUN".

3. The air in the fuel system will automatically be purged within one minute.

(1) Starter switch (A) "STOP"

(B) "RUN" (C) "START"

After adjustment is completed:

Using the socket wrench, tighten the grease fitting. Tightening torque must be between 98 to 108 N-m.

A If the tracks are too tight, wear is increased. A If the tracks are too loose, the track pads may collide

with the sprocket and wear is increased. The track may dislocate or come off.

A Clean the track after every use. A Should the track tension be high due to sticking mud,

lift the track with the help of the boom, arm and bucket, idle the engine and remove mud from the track by rotating it.

C Tension the tracks as specified:

1. Apply grease (2) to the grease fitting (1).

A If the purging was insufficient, the engine stops right

after starting. In this case repeat steps 2 to 3 again.

ADJUSTMENT OF TRACKS

C To loosen the tracks, follow the following

procedure:

To avoid personal injury or death: A Do not loosen the grease fitting completely or

too quickly. Otherwise grease under high pressure in the tension cylinder could squirt out.

A Do not crawl under the excavator.

1. Using a socket wrench, loosen the grease fitting a few turns.

2. When grease oozes out from the thread, rotate the track and loosen the track in the lifted position (see illustration).

(1) Grease fitting (2) Grease gun

2. Rubber Tracks Tension the track in the lifted position, so that the distance "A" (clearance between the track roller and the inside surface of the track) see illustration, in this case, the track seam is positioned on the top center between the idler and the sprocket.

Page 85

To avoid serious injury or death: A Do not work under the machine in this

condition.

A For your safety do not rely on hydraulically

supported devices, they may leak down and suddenly drop or be accidentally lowered.

To avoid personal injury or death: A When lifting the machine itself with an

attachment, place a safety block or safety post to prevent the machine from turning over. Keep the pilot control lock lever in the "LOCKED" position.

63OTHER ADJUSTMENTS AND REPLACEMENTS

A Make sure that no obstacles, such as stones are

caught in the track. Remove such obstacles before adjusting the track tension.

A Track seam

The ends of the rubber track are joined with a seam. When adjusting the tracks, the seam must be positioned on the top center between the idler and the sprocket.

If the seam is positioned incorrectly, the tracks will be tensioned too loosely, and a further readjustment will be necessary.

A Rotate the track after adjustment one to two times to

check the tension.

A Additionally following points are to be observed when

adjusting rubber tracks. (1) If the track loosen more than 25 mm (1.0 in.),

readjust them.

(2) Check track tension 50 hours after initial use and

readjust if necessary. Check and adjust thereafter every 50 service hours.

(1) Seam (Mark " ")

(A) 10 to 15 mm (0.4 to 0.6 in.)

BSpecial Information when Using Rubber

Tracks

1. When turning, make a slow swing turn. Avoid spin turns to reduce lug wear and entry of dirt.

2. The relief valve may be activated if too much dirt and sand clog the tracks. In this case move the machine for a short distance straight backwards to let the earth and sand fall off, then a turn can be made.

3. Avoid using rubber track on riverbeds, stony underground, ferro-concrete and on iron plates. The rubber can damage as well as increase wear on the tracks.

Page 86

OTHER ADJUSTMENTS AND REPLACEMENTS64

CHANGING THE BUCKET

To avoid personal injury or death: A When the coupling pins are removed or

installed, chips may come off. Always use gloves, goggles and a helmet.

A When the change of the equipment must be

performed with the engine running, always work as a 2-person team. One person sits in the operator's seat and the other works on the machine.

A Do not use your fingers to center the holes,

since they may be injured or even cut in case of sudden or uncontrolled movements.

A Read the manual of the attachment to do a

correct operation safely when other attachments are installed instead of KUBOTA specified bucket.

FUSES

BReplacing Fuses

1. Remove the cover of the fuse box.

2. Replace the burnt out fuse with a fuse having the same capacity.

BFuse Capacities and Circuits

(1) Fuse box

Wiper / washer

system

2 Radio (AC) 13 Electrical connection 2

3 12-V socket 14 Control unit (+B)

4 Starter 15 Interior lighting

5 Starter (signal) 16 Rotary beacon

6 Fuel pump 17 Working lights

7 Relay supply circuit 18 Horn

8 Control unit (AC) 19 Engine cut-off switch

9 Control lever lock 20 Horn switch

10 Alternator 21

11 Fan motor

12 Electrical connection

Display and control unit (+B)

(1) Fuse box

BSlow Blow Fuse

Slow blow fuse is provided to protect the electrical circuits. If the slow blow fuse is blown, check the electrical circuits for trouble and then replace with a new compatible slow blow fuse.

(1) Slow blow fuse (50A) (2) Slow blow fuse (60A)

Page 87

65TROUBLESHOOTING

TROUBLESHOOTING

If the excavator dose not show the desired performance, or when trouble arises, refer to the table below and undertake appropriate measures.

Trouble Cause Countermeasure

*Check fuel tank and filter *Remove impurities and water *If necessary, replace filter

*Remove water from the fuel tank *Check fuel pipe joint bolts and nuts for looseness *Purging of the fuel system (for fuel filter and injection pump, see "PURGING OF THE FUEL SYSTEM" in "OTHER ADJUSTMENTS AND REPLACEMENTS".)

*Pour hot water over the radiator

*Recharge battery

*Check fuel and add if necessary

*Clean the air filter element

*Check fuel and add if necessary *Purge the fuel system

*Use high quality fuel

*Drain engine oil to prescribed oil level

*Adjust or replace

*Fill to prescribed level

*Clean

*Replace coolant fluid and add anti-rust

*Replace

*Clean

*Reduce load

*Fill to prescribed level

*Use prescribed fuel

*Add oil

*Replace hose or joint

*Bring pilot control lock lever into "UNLOCK" position

*Remove

*Adjust accordingly

*Bring pilot control lock lever into "UNLOCK" position

Engine

Hydraulic

System

Drive

System

Starting difficulties

Insufficient engine power

Engine suddenly stops

Abnormal exhaust gas color

Water temperature too high (Overheating)

Boom, arm, bucket, drive, swing and dozer power is too low

Swing motor and front attachment does not work

Deviation of drive direction

Drive lever does not move

Fuel is too viscous

Air or water in the fuel system

Oil viscosity is too high the engine runs sluggishly in winter

Battery is almost dead; insufficient compression

Low fuel level

Clogged air cleaner

Low fuel level

Poor fuel

Too much engine oil

Worn or torn fan belt

Coolant level too low

Radiator grill or fins are clogged

Coolant is contaminated with rust from the cylinder head or crank case

Defective radiator cap (Evaporation)

Corroded coolant pipes

Continuous operation under full load

Engine oil level too low

Use of poor fuel

Hydraulic oil level too low

Leakages of hoses and / or joints

Pilot control lock lever in "LOCKED" position

Blocked through stones

Track too loose or too tight

Pilot control lock lever in "LOCKED" position

Page 88

66 TROUBLESHOOTING

KUBOTA I.C.S. NAVIGATION LIST OF MESSAGES

If an error occurs with the machine, one of the following messages appears in the LCD. In case of a trouble, immediately contact your local dealer for inspection and repair.

LCD

CAN system error

Feed fuel

LED Problem / Error Preliminary Measure Solution

The Controller Area

(red)

Network (CAN) has developed a fault. Measured values may be incorrect and switches may not

The machine can be started and driven. Do not perform any work with the machine.

function.

This message appears when the fuel level is low and

--prompts the operator to refuel.

Inform your KUBOTA dealer immediately.

Refuel the excavator.

Periodic check soon

(notice)

Periodic check passed

(warning)

Warning temperature

rising

This message appears 10 hours before the periodic check interval. This message means that the regular service is due shortly.

Operate the machine as usual.

Ask your KUBOTA dealer about the relevant parts. Run the maintenance procedure.

Ask your KUBOTA dealer about the relevant parts. Run the maintenance

This message means that the regular service is due.

The machine can be operated but service must be carried out urgently.

procedure.

Operate the The temperature of the coolant is higher than normal.

machine only with

reduced loads until

the temperature is

---

normal again.

--- --- --- --- ---

Page 89

67TROUBLESHOOTING

LCD

Clock setting request

--- --- --- --- ---

Raise the control lever

lock

--- --- --- --- ---

Lower the control lever

lock

Oil pressure too low

LED Problem / Error Solution #1 Solution #2

Power was interrupted and the clock now has to be set again.

This message indicates a step in a

(yellow)

procedure.

This message indicates a step in a

(yellow)

procedure.

(red)+The engine oil

pressure is too low.

In order to set the

clock, press the user

setting switch.

Raise the pilot

control lock lever;

the indicator goes

out.

Lower the pilot

control lock lever;

the indicator goes

out.

Stop the engine

immediately. The

engine may have

developed a fault.

---

Inform your KUBOTA dealer immediately.

Overheat

Charging system error

The machine is overheated and must cool off by idling.

(red)+The charging system

has developed a fault.

Allow the machine to

cool off by idling. Do

not switch the

engine off as the

coolant could then

boil over.

Check the V-belt.

When the V-belt is

OK, let the engine

run until the indicator

goes out.

Clean the radiator and check the coolant. Refill the radiator with coolant by its boiled-over amount. Unclog the radiator and other components before use again. Check also the hydraulic system for oil leak and other troubles. If an oil leak is found, immediately contact your local dealer for repair.

If the indicator does not go out, inform your KUBOTA dealer immediately.

Page 90

68 TROUBLESHOOTING

LCD LED Problem / Error Solution #1 Solution #2

Fuel sensor error

Water temperature sensor

error

--- --- --- --- ---

Lever lock system error

Travel 2 speed system

error

(red)

The fuel sensor has developed a fault; the fuel gauge does not appear in the display.

The coolant temperature sensor has developed a fault; the coolant temperature gauge does not appear in the display.

The electrical system in the pilot control lock lever has developed a fault.

The electrical system in the travel speed has developed a fault.

Press the display

selector switch to

return to the default

display.

Press the display

selector switch to

return to the default

display. The

functions of the

machine are stable

but overheating

cannot be excluded.

The engine can be

started but the

machine cannot be

set in motion.

The machine can

only be set in motion

at low speed.

Inform your KUBOTA dealer immediately.

--- --- --- --- ---

Page 91

LCD LED Problem / Error Solution #1 Solution #2

This is a warning that a

Overvoltage

(red)

higher voltage (from a 24-V battery, for example) is being applied to the electric circuit, or that there is a problem with the

Switch the engine off

immediately and

check the battery

and the alternator.

Restart the engine.

If the indicator lights up again after restarting, inform your KUBOTA dealer immediately.

alternator.

69TROUBLESHOOTING

--- --- --- --- ---

External 5-V system error

External 12-V system

error

Starting the engine

(red)

(yellow)

The 5-V sensor supply line has developed a system fault. The main functions are not available.

The 12-V sensor supply line has developed a system fault. The main functions are not available.

This message indicates a step in a procedure.

The machine can be

started and driven.

Do not perform any

work with the

machine.

The machine can be

started and driven.

Do not perform any

work with the

machine.

Start the engine; the

indicator goes out.

Inform your KUBOTA dealer immediately.

---

Page 92

70 TROUBLESHOOTING

C Service hour meter

When the hour meter has counted up to the hours circled in the maintenance list below, the message appears. The message shows up as follows.

No. Check points Measures

50 100 250 500 600 750 1000

Hour meter indicator

Interval

1 Engine oil

2 Hydraulic oil every 1000 hrs

Air filter

element

4 Drive unit oil change every 500 hrs

5 Engine oil filter

6 Hydraulic return element every 500 hrs

The indicator "Maintenance" shines when a service period is due.

(The message reappears on the hour meter designated next.)

Hydraulic suction filter

Outer element

Inner element every 1000 hrs

element

change

replace

every 500 hrs

every 1000 hrs

every 500 hrs

every 1000 hrs

First operation

A The maintenance indicator disappears automatically in about 10 seconds. A When the key is turned from "STOP" to "RUN", the maintenance indicator reappears and disappears again

automatically in about 10 seconds.

A When the key is turned from "STOP" to "RUN" repeatedly 10 times, the indicator disappears.

C In case the service hour meter replaced due to any trouble with it, the meter is set to "0". Contact your KUBOTA dealer

for details.

Page 93

71OPERATION UNDER COLD WEATHER CONDITIONS

OPERATION UNDER COLD WEATHER CONDITIONS

PREPARATION FOR OPERATION IN COLD WEATHER

1. Replace engine oil and hydraulic oil with those of viscosities suitable for cold weather.

2. In cold weather, battery power drops, and the battery fluid may freeze if the battery is not sufficiently charged. To prevent the battery fluid from freezing, be sure to keep the battery charged at least 75% or more of its capacity after operation. To ease next starting, it is recommended to keep the battery stored in closed or heated rooms. If the battery fluid level is too low, do not add after operation, but add with the engine running before the next operation.

3. Add anti-freeze to coolant in the radiator and recovery tank, if the ambient temperature is expected to drop below 0 (32 ). Mixing ratio of water and anti-freeze is 50%/50%.

A Use permanent anti-freeze or long-life coolant. A Drain the coolant completely and clean the radiator

inside then fill with the water and anti-freeze mixture.

A As the anti-freeze also acts as an anti-corrosive, it is

not necessary to add an additive to the water and antifreeze mixture.

A See "Checking Coolant Level" under "DAILY

CHECKS" in "MAINTENANCE" for radiator fill volumes.

PROCEDURE AFTER COMPLETING WORK

Clean the excavator thoroughly after work and wipe dry. Otherwise mud and earth on the tracks could freeze if the temperature drops below the 0 (32 ) mark. Operation of the excavator is then not possible. Store the excavator in a dry place; if not possible, store on wooden planks or on mats. If the excavator is kept on damp or muddy ground, the tracks could freeze overnight. Operation of the excavator is then not possible. Furthermore the drive unit may be damaged. Additionally, the piston rods of the hydraulic cylinders must be rubbed dry. Otherwise severe damage could occur if dirty water seeps through the seals.

Page 94

72 LONG STORAGE

LONG STORAGE

To avoid personal injury or death:

A Do not clean the excavator with the engine running. A To avoid the danger of exhaust fume poisoning, do not operate the engine in a closed building without

proper ventilation.

A When storing, remove the key from the starter switch to avoid unauthorized persons from operating the

excavator and getting injured.

A Bring the excavator on a firm, flat, and level surface. Lower the attachments and dozer blade on the ground.

B Should the Excavator be Stored for a Longer Period of Time, Observe Following Procedures:

1. The whole excavator should be cleaned thoroughly and in all cases stored indoors. If the excavator has to be kept outdoors, Iay out wooden planks on an even ground, place the excavator on the planks and cover completely.

2. Do an oil change and grease the excavator.

3. Heavily grease the visible section of the piston rods.

4. Remove the battery and store indoors.

5. If it is expected that the temperature will sink below the 0 (32 ) mark, add anti-freeze or drain coolant completely.

A Wash the excavator after stopping the engine.

If you wash the excavator while running the engine, splashing water gets into the air cleaner through its intake and cause engine damage. Careful, wash and do not splash water over the air cleaner while the engine is running.

B Observe Following Procedures when the Machine is to be Operated after Long Storage.

1. Wipe off the grease from the hydraulic cylinder rods.

2. Turn on the engine and operate the attachments and the drive mechanisms under no load in order to circulate the hydraulic oil. (If the machine is stored for longer than one month, do steps 1 and 2 once every month.)

Page 95

73LONG STORAGE

Periodic replacement of important component parts

To ensure safety in operation, you are strongly requested to inspect and service the machine at regular intervals. For added safety, ask your KUBOTA dealer to replace the following important component parts periodically. These parts are prone to degradation in material or subject to wear and tear with time. It is difficult to judge how much they have been affected at regular inspection. It is therefore necessary to replace them with new ones after a specified time of use, whether wear is visible or not. If any of them is found to be worn before the specified use, they must be repaired or replaced the same as other parts. If any of the hose clamps are found deformed or cracked, the hose clamps must also be replaced. For the hydraulic hoses other than the ones to be replaced periodically, inspect them for the following points. If found loose or very worn, tighten and / or replace the hose. When replacing the hydraulic hoses, change their O rings and sealing components with new ones. For replacement of the important parts, contact your KUBOTA dealer.

A At the following periodic inspections, check the fuel hoses and hydraulic hoses as well.

Inspection Interval Check points

Daily Checks Oil leak at fuel and hydraulic hose connections and points

Every month

Every year

Oil leak at fuel and hydraulic hose connections and points Damages at fuel and hydraulic hose (cracks, chafing)

Oil leak at fuel and hydraulic hose connections and points Interference, deformation, degradation, twist and other damages (cracks, chafing) of fuel and hydraulic hoses

List of important component parts

No. Component parts Used place Q'ty Period

Fuel tank - Water separator 1

Water separator - Fuel pump 1

1 Fuel hose

2 Hydraulic hose (suction) Tank - Main pump 1

3 Hydraulic hose (delivery)

4 Hydraulic hose (Boom cylinder) Control valve - Boom cylinder *2

5 Hydraulic hose (Arm cylinder)

6 Hydraulic hose (Bucket cylinder)

7 Hydraulic hose (Swing cylinder) Control valve - Swing cylinder 2

8 Hydraulic hose (Dozer cylinder)

9 Hydraulic hose (Service port)

10 Hydraulic hose (Swivel motor) Control valve - Swivel motor 2

Fuel pump - Fuel filter 1

Fuel filter - Fuel nozzle 2

Fuel nozzle - Fuel tank 2

Main pump - Control valve 3

Main pump - Pilot filter 1

Pilot filter - Change valve 2

Control valve - Hose joint *2

Hose joint - Arm cylinder *2

Control valve - Hose joint *2

Hose joint - Bucket cylinder *2

Control valve - Rotary joint 2

Rotary joint - Adapter 2

Adapter - Dozer cylinder 2

Control valve - Hose joint 2

Hose joint - Adapter 2

Every 2 years or 4000 hours

To prevent serious damage to the hydraulic system, use only a KUBOTA genuine hydraulic hose.

Page 96

74 RECOMMENDED OILS

RECOMMENDED OILS

A Other than the oil mentioned below, JCMAS HK certified oil and GK certified grease can also be used. Check the Japan

Lubricating Oil Society (JALOS) website for more details.

Recommendation Filled at the factory

Engine oil

Coolant

Grease

Hydraulic oil

Gear oil

Diesel

Ambient

temperature

conditions

In winter and/or at low temperatures

In summer and/or at high ambient temperatures

All-weather 15W-40* Shell Rimula R4L* 15W40, API CI-4

In winter and/or at low temperatures

In summer and/or at high ambient temperatures

In winter and/or at low temperatures

In summer and/or at high ambient temperatures

All-weather 80W-90* Shell

Viscosity

SAE 10W SAE 20W

SAE 30 SAE 40 SAE 50

NLGI-2*

NLGI-1 WEICON

ISO 32 ISO 46*

ISO 46 ISO 68

SAE 75 SAE 80

SAE 90 SAE 140

Quality

standard

API CI-4

G048* SAE J1034* MB 325.0* ASTM D3306* D4985

DIN 51825 KP2K-30*

MIL-L-2105C*

EN 590 ASTM D975

Brand Type

Hightec

ROWE

Mobil Mobilux EP2*

Shell

Antifreeze AN (-37 )*

Antiseize Standard

Tellus S2M46*

Spirax MA80W*

When diesel fuel with a high sulphur content (between 0.50 % and 1.00 %) is used, the engine oil and engine oil filter must be replaced at shorter intervals.

Never use diesel fuel with a sulphur content exceeding 1.00 %.

Always use distilled water to mix with antifreeze. Always follow the recommendations of the coolant manufacturer for the mixing ratio. Do not mix with other coolants.

Only use during the first 50 working hours (on all greasing points around the swing block).

The fuel filled at the factory is not winter diesel. For preparing the excavator for use in winter, fill the fuel tank with winter diesel and allow the engine to run for a few minutes.

Note

Refrigerant HFC R134a

* This lubricant is filled while manufacturing the engine.

Never use diesel fuel with a sulphur content exceeding 1.00 %.

Page 97

C Engine Oil:

A Oil used in the engine should have an American Petroleum Institute (API) service classification and Proper SAE

Engine Oil according to the ambient temperatures.

Above 25 (77 ) SAE 30 or SAE 10W-30, SAE 15W-40

0 to 25 (32 to 77 ) SAE 20 or SAE 10W-30, SAE 15W-40

Below 0 (32 ) SAE 10W or SAE 10W-30, SAE 15W-40

A Refer to the following table for the suitable API classification engine oil according to the engine type (with internal

EGR, external EGR or non-EGR) and the fuel.

75RECOMMENDED OILS

Fuel used

Ultra Low Sulfur Fuel [<0.0015% (15 ppm)]

EGR: Exhaust Gas Re-circulation A The CJ-4 engine oil is intended for DPF (Diesel Particulate Filter) type engines, and cannot be used on this

machine.

Model U27-4 ---

C Fuel:

A Cetane number of 45 is minimum. Cetane number greater than 50 is preferred, especially for temperatures below

-20 (-4 ) or elevations above 1500 m (5000 ft).

A Diesel fuels specified to EN 590 or ASTM D975 are recommended. A No.2-D is a distillate fuel of lower volatility for engines in industrial and heavy mobile service. (SAE J313 JUN87)

Oil class of engines except external EGR Oil class of engines with external EGR

CG-4, CH-4 or CI-4

except external EGR with external EGR

Engine oil classification (API classification)

CI-4

(Class CG-4 and CH-4 engine oils cannot be used on EGR type engines)

Page 98

76 MAIN DIMENSIONS

MAIN DIMENSIONS

U27-4

CANOPY

U27-4

CANOPY

mm (in.)

(A) (B) (C) (D) (E) (F) (G) (H) (I) (J)

580

(22.8)

(K) (L) (M) (N) (O) (P) (Q) (R) (S) (U)

1980

(78.0)

610

(24.0)

2420

(95.3)

1500

(59.1)

350

(13.8)

790

(31.1)

320

(12.6)

1350

(53.1)

3200

(126.0)

1500

(59.1)

990

(39.0)

4370

(172.0)

4190

(165.0)

3100

(122.0)

4630

(182.3)

2820

(111.0)

4740

(186.6)

(101.6)

2580

850

(33.5)

Page 99

77MAIN DIMENSIONS

U27-4

CABIN

U27-4

CABIN

mm (in.)

(A) (B) (C) (D) (E) (F) (G) (H) (I) (J)

580

(22.8)

(K) (L) (M) (N) (O) (P) (Q) (R) (S) (U)

1980

(78.0)

610

(24.0)

2430

(95.7)

1500

(59.1)

350

(13.8)

790

(31.1)

320

(12.6)

1350

(53.1)

3200

(126.0)

1500

(59.1)

990

(39.0)

4370

(172.0)

4190

(165.0)

3100

(122.0)

4630

(182.3)

2820

(111.0)

4740

(186.6)

(101.6)

2580

870

(34.3)

Page 100

78 LIFTING CAPACITY

LIFTING CAPACITY

1. The lifting capacities are based on ISO 10567 and do not exceed 75% of the static tilt load of the machine or 87% of the hydraulic lifting capacity of the machine.

2. The strokes are as follows. (1) The load point corresponds to the front bolt part of the arm. (2) The machine positions are over - front (Blade down). (3) The operating cylinder is the boom cylinder.

3. The bucket of the excavator, the hook, the sling and other lifting accessories are taken into consideration for the loads.

Machine conditions: No bucket, all others according to the standard regulations.

To avoid personal injury or death:

A No loads greater than those values mentioned in the lifting capacity tables are to be lifted. A No loads greater than 1 ton are to be lifted when no safety devices are attached to boom and dozer blade

cylinders.

A The values mentioned in the table are valid only on even, hard grounds. When lifting on soft ground, the

machine can tip over due to the load being concentrated only on one side of the machine.

A The table values are calculated at the end of the arm without the bucket. In order to find the allowable loads

for machines with bucket, the bucket weight must be subtracted from the values in the table.

A In this manual, the machine's lifting capacity is

discussed, but it does not mean that it is recommended to use the machine for lifting jobs.

A It is specified in Item 3.4 of ISO 10567:1992 that

the following devices must be additionally installed if a hydraulic excavator with the rated lift load of over 1,000 kg at its minimum lifting radius or the tilting moment of over 40,000 N-m is used for lifting loads. (1) Lifting hook (2) Acoustic alarm or warning lamp for the

operator when the rated load or the corresponding tilting moment has been exceeded.

(3) Boom descending control device

conforming to ISO 8643:1997