Kubota U35-4 Operator's Manual


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Kubota U35-4 Operators Manual

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OPERATOR'S MANUAL

MODEL U35-4 English (U.S.A.)

U 3 5 - 1BAAEAJAP0490 1BAAEAJAP0780 Code No. RC788-8121-7 4 READ AND SAVE THIS MANUAL PRINTED IN JAPAN © KUBOTA Corporation 2012

LIST OF ABBREVIATION

Abbreviations Description API ASTM CECE DIN EN OSHA FRONT Hi ISO JIS L L/min Lo MIL OPG (Top Guard Level I) rpm ROPS SAE TPSS AI American Petroleum Institute American Society for Testing and Materials, USA Committee for European Construction Equipment German Institute for Standards, Federal Republic of Germany European Standard Occupational Safety and Health Administration "Front" means the front view towards the boom and dozer High speed International Standardization Organization Japanese Industrial Standard Volume (Liter) Liter per minute Low speed Military Standards Operator Protective Guards of Top Guard Level I Revolutions Per Minute Roll-Over Protective Structures Society of Automotive Engineers, USA Two Pattern Selection System Auto Idle

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, brush-covered 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. U35-4 AU . L . 12 - 14 . 3 . AK

GENERAL SYMBOLS

The instruments and operation elements have been marked with a series of symbols in order to simplify the operation of excavator. These symbols are listed below with the respective descriptions.

Safety alert Symbol Warning lamp ''Fuel level too low'' System lamp Warning lamp ''Engine Oil pressure'' Warning lamp ''Battery charge'' Indicator lamp ''Glow'' Working light switch Horn Wiper/Washer switch Diesel Hydraulic fluid Gear oil Grease Fast Slow Excavator - Overhead movement toward the front Excavator - Overhead movement toward the rear Boom up Boom down Arm up Arm crowd Bucket crowd Bucket dump Boom swing (left) Boom swing (Right) Dozer raise Dozer lower Operation direction of control lever Operation direction of control lever Read operator's manual Engine stop control lamp

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.

3SAFETY 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. 3DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. 3 WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. 3CAUTION : Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. IMPORTANT : Indicates that equipment or property damage could result if instructions are not followed.

NOTE : Gives helpful information. CONTENTS

SAFE OPERATION ............................................................................................

DEALER SERVICE...................................................................................................... 1

TECHNICAL DATA...................................................................................................... 2

DESCRIPTION OF MACHINE PARTS........................................................................ 3

INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 4

CHECKS BEFORE START ......................................................................................... 6

DAILY CHECKS....................................................................................................... 6

CHECKING THE DEVICES ..................................................................................... 6

Starter Switch ...................................................................................................................6

Display Selector Switch....................................................................................................7

LCD for Normal Operation................................................................................................7

Warning Lamp ................................................................................................................10

LCD for Warning.............................................................................................................10

Setting the Clock.............................................................................................................12

Reordering the year/month/day and Changing the AM/PM System to the 24-hour One 13

Log Record.....................................................................................................................14

Periodic Check................................................................................................................15

If All the Check Points are not Displayed at a Glance on a Single Screen.....................15

When the Check-up is Completed..................................................................................17

Horn Switch ....................................................................................................................17

Light Switch ....................................................................................................................17

AUX Port Enable Switch.................................................................................................17

Auto Idle Control Switch .................................................................................................18

Throttle Potentiometer....................................................................................................18

Travel Speed Switch.......................................................................................................18

CAB TYPE MACHINES ......................................................................................... 19

Wiper/Washer Switch .....................................................................................................19

Interior Lamp...................................................................................................................19

Opening/Closing of CAB Door........................................................................................20

Opening/Closing of Front CAB Window..........................................................................20

Opening/Closing of Side CAB Window...........................................................................20

Emergency Hammer.......................................................................................................20

AIR CONDITIONER............................................................................................... 21

Air Flow...........................................................................................................................21

Air Control Vent ..............................................................................................................21

Control Panel..................................................................................................................22

Operation........................................................................................................................22

HANDLING THE SAFETY DEVICES..................................................................... 22

Pilot Control Lock Lever..................................................................................................22

OPERATION OF THE ENGINE................................................................................. 23

STARTING THE ENGINE...................................................................................... 23

STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 24

STARTING WITH AN AUXILIARY BATTERY ....................................................... 25

Observe Following Guidelines when Starting with an Auxiliary Battery..........................25

CONTENTS

CHECK POINTS AFTER STARTING THE ENGINE ............................................. 25

STOPPING THE ENGINE...................................................................................... 26

Engine Stop Button.........................................................................................................26

Precautions in case of Overheat.....................................................................................26

EXCAVATOR OPERATION ...................................................................................... 27

RUNNING-IN OF THE NEW EXCAVATOR........................................................... 27

Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..27

Oil Change in the Run-in Stage......................................................................................27

Adjusting the Operator's Seat.........................................................................................27

Seat Belt.........................................................................................................................28

STARTING............................................................................................................. 28

Pilot Control Lock Lever..................................................................................................28

DRIVING ................................................................................................................ 29

Drive Levers (Right,Left).................................................................................................30

TURNS................................................................................................................... 30

Pivot Turn .......................................................................................................................30

Spin Turn........................................................................................................................31

UP AND DOWNHILL DRIVING.............................................................................. 32

PARKING ON A SLOPE ........................................................................................ 32

OPERATION OF THE DOZER .............................................................................. 32

TWO PATTERN SELECTION SYSTEM (TPSS)................................................... 33

Pattern Change...............................................................................................................33

OPERATION OF THE BOOM................................................................................ 34

OPERATION OF THE ARM................................................................................... 34

OPERATION OF THE BUCKET ............................................................................ 35

UNIT SWING AND BOOM SWING OPERATION.................................................. 35

Unit Swing Operation......................................................................................................35

Boom Swing Operation...................................................................................................35

AUXILIARY PORT OPERATION ........................................................................... 36

Selecting the Action Modes............................................................................................36

AUX Port Handling Procedure........................................................................................37

Setting the Maximum Flow Volume................................................................................39

HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 44

ANGLE BLADE OPERATION................................................................................ 45

1-way or 2-way CIRCUIT SELECTION VALVE OPERATION ............................... 46

AUTO IDLE (AI) OPERATION ............................................................................... 46

IMPORTANT INFORMATION ON EXCAVATOR OPERATION ............................ 47

TRANSPORTING THE EXCAVATOR ON A VEHICLE............................................. 48

LIFTING OF THE EXCAVATOR................................................................................ 50

MAINTENANCE......................................................................................................... 52

MAINTENANCE INTERVALS................................................................................ 52

OPENING AND CLOSING OF COVERS............................................................... 55

Opening/Closing of the Engine Hood .............................................................................55

Opening/Closing of the Side Cover ................................................................................55

Where to store the Tool..................................................................................................56

Cup Holder......................................................................................................................56

Where to store the Grease Gun......................................................................................56

Where to keep Operator's Manual..................................................................................56

CONTENTS

DAILY CHECKS..................................................................................................... 57

Checking Coolant Level..................................................................................................57

Checking Fuel Level.......................................................................................................57

Checking Engine Oil Level..............................................................................................58

Checking Hydraulic Oil Level..........................................................................................58

Checking V-belt ..............................................................................................................59

Checking Radiator and Oil Cooler..................................................................................59

Checking Washer Liquid.................................................................................................60

Checking and Cleaning Engine and Electrical Wiring.....................................................60

Washing Whole Machine................................................................................................60

Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)................60

Greasing Bucket Pin.......................................................................................................61

Greasing Boom Swing Fulcrum......................................................................................61

REGULAR CHECKS AND MAINTENANCE WORK ................................................. 62

EVERY 50 SERVICE HOURS ............................................................................... 62

Draining the Water from the Fuel Tank...........................................................................62

Draining Water Separator...............................................................................................62

Checking Battery Condition............................................................................................63

Greasing Swing Bearing Teeth.......................................................................................64

EVERY 200 SERVICE HOURS ............................................................................. 65

Adjusting V-belt Tension.................................................................................................65

Checking Radiator Hoses and Clamps...........................................................................66

Grease Swing Ball Bearing.............................................................................................66

Inspection and Cleaning Air Filter Element.....................................................................66

Air Filter Maintenance.....................................................................................................67

Checking Fuel Line and Intake Air Line..........................................................................67

AIR CONDITIONER............................................................................................... 68

Cleaning Air Filter...........................................................................................................68

Checking Air-Conditioner Condenser.............................................................................68

EVERY 500 SERVICE HOURS ............................................................................. 69 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)........................................................................69 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)...................70 Drive unit Oil Change(First Oil Change of the 50 hours)................................................70 Replacing Fuel Filter Cartridge.......................................................................................71 Replacing Hydraulic Return Filter Element (First replacement after 250 service hours) 71 Replacing Breather Filter................................................................................................71 Replacing Fan Belt .........................................................................................................71 EVERY 1000 SERVICE HOURS ........................................................................... 72

Replacing the Hydraulic Pilot Filter Element...................................................................72

Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 72

Hydraulic Oil Check with Hydraulic Hammers................................................................73

EVERY 1000 SERVICE HOURS OR ONCE A YEAR ........................................... 74

Replacing Air Filter Element...........................................................................................74

EVERY 1500 SERVICE HOURS ........................................................................... 74

Checking Fuel Injection Nozzle (Injection Pressure)......................................................74

EVERY 2000 SERVICE HOURS ........................................................................... 74

Changing Front Idler and Track Roller Oil......................................................................74

Checking the Alternator and Starter Motor.....................................................................74

EVERY 3000 SERVICE HOURS ........................................................................... 74

CONTENTS

Checking Injection Pump................................................................................................74

ANNUAL SERVICING............................................................................................ 74

Electrical Wiring and Fuses............................................................................................74

Checking the Electrical Circuit........................................................................................74

Checking Air-Conditioner Pipes and Hoses....................................................................74

BIENNIAL SERVICING.......................................................................................... 74

Replacing Air-Conditioner Pipes and Hoses...................................................................74

Replacement of Radiator Hoses and Hose Clamps.......................................................75

Changing Radiator Coolant ............................................................................................75

Replacing Fuel Hoses and Hose Clamps.......................................................................76

Replacing Intake Air line.................................................................................................76

SERVICING AS REQUIRED.................................................................................. 76

Checking Amount of Refrigerant (gas) ...........................................................................76

OTHER ADJUSTMENTS AND REPLACEMENTS.................................................... 78

PURGING OF THE FUEL SYSTEM ...................................................................... 78

ADJUSTMENT OF TRACKS ................................................................................. 78

Special Information when Using Rubber Tracks.............................................................79

CHANGING THE BUCKET.................................................................................... 80

FUSES ................................................................................................................... 80

Replacing Fuses.............................................................................................................80

Fuse Capacities and Circuits..........................................................................................81

Auxiliary Electric .............................................................................................................82

Slow Blow Fuse..............................................................................................................82

TROUBLESHOOTING............................................................................................... 83

OPERATION UNDER COLD WEATHER CONDITIONS .......................................... 85

PREPARATION FOR OPERATION IN COLD WEATHER.................................... 85

PROCEDURE AFTER COMPLETING WORK ...................................................... 85

LONG STORAGE...................................................................................................... 86

RECOMMENDED OILS............................................................................................. 88

BIODIESEL FUEL (BDF) ....................................................................................... 90

APPENDICES............................................................................................................ 92

MAIN DIMENSIONS .............................................................................................. 92

LIFTING CAPACITY.................................................................................................. 93

LIST OF SCREENS................................................................................................... 96

LIST OF NORMAL SCREENS............................................................................... 96

NAVIGATION LIST OF SCREENS........................................................................ 97

SAFE OPERATION

SAFE 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.

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.

(1) Pattern selector lever (A) "Pattern A" (Two Pattern Selection System:TPSS) (B) "Pattern B" 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.

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 (7) Soft hat

(2) Clothing fit for work (8) Towel

(3) Tight seams (9) Baggy trousers

(4) Good grip footwear (10) Loose cuffs of the shirt

(5) Well fitting cuffs (11) Baggy shirt

(6) Working gloves (12) Sandals or open-toed shoes

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. The top guard and front guard are available for this machine. Consult your KUBOTA dealer for details. SAFE OPERATION

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.

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. Do not touch or depress the control levers or the pedals from outside the cab while the engine is running.

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 and CAB 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. Max. drawbar pull at 72 kN (16190 lbf, 7340 kgf) coupling hook Max. vertical load at 40 kN (8990 lbf, 4080 kgf)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.

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)

SAFE 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. After loading the excavator on the truck, block the tracks with blocks and tie down the excavator at the appropriate locations.

5. Avoid abrupt braking of the vehicle with the excavator loaded. Sudden braking causes the excavator to move and may cause a serious accident.

6. Do not use the hooks on the roof of CAB for lifting the excavator.

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.

7. Do not open the radiator cap before the radiator has cooled down sufficiently. First loosen the cap to the first stop and allow the system enough time to release the remaining pressure. Then loosen the cap completely.

8. To avoid short-circuiting the battery, always remove the ground cable first and attach the positive cable first.

9. Oil under high pressure can penetrate the skin and may be harmful to your health if not treated immediately. 10.Leaking hydraulic fluid has enough pressure to penetrate the skin and cause serious injuries. Leakages from pin holes can be totally invisible. Do not use hands for checking for leaks. Always use a piece of wood or cardboard. It is strongly recommended that you use a face mask or eye protection. Should injuries occur with leaking hydraulic fluid, contact a doctor immediately. This fluid can cause gangrene or serious allergic reactions.

11.To avoid environmental damage from acid and heavy metals, dispose of the battery appropriately. 12.Observe all laws and regulations concerning the disposal of used oil, coolants, solvents, hydraulic fluids, battery acids and batteries. 13.To avoid fire, do not heat the hydraulic components (tanks, pipes, hoses, cylinders) before they have been drained and washed. 14.Use eye protection or a face mask to protect the eyes and respiratory system against dust and other foreign particles.

15.Securely support excavator with stands or suitable blocking before working underneath. For your safety, do not work under any hydraulically supported devices. They can settle, suddenly leak down, or be accidentally lowered.

16.Do not dismantle the spring of the track tensioner. If dismantling is necessary, contact your KUBOTA dealer where the machine was purchased, or competent service shop. The assembly must be done according to the KUBOTA work shop manual (W.S.M.) for the product involved. 17.When lifting the machine itself with an attachment, place a safety block or safety post to prevent the machine from rolling over. Keep the pilot control lock lever in the "LOCKED" position. 18.Inspect ROPS / OPG (Top Guard Level I) for damage and if damage is found contact your KUBOTA dealer for repair. 19.KUBOTA does not use asbestos containing components and recommends against the use of such components. Components containing asbestos should be handled in accordance with applicable regulations and industry practice. 20.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. SAFE OPERATION

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.

6. DANGER, WARNING AND CAUTION LABELS

SAFE OPERATION

7. CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material.

2. Clean danger, warning and caution labels with soap and water, and dry with a soft cloth.

3. Replace damaged or missing danger, warning and caution labels with new labels from your KUBOTA dealer.

4. If a component with danger, warning and caution label(s) affixed is replaced with new part, make sure new label(s) is (are) attached in the same location(s) as the replaced component.

5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge.

DEALER SERVICE

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) Date of purchase

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. (1) Engine serial No. TECHNICAL DATA

TECHNICAL DATA

KUBOTA EXCAVATOR Model name U35-4 Type Canopy CAB Angle Blade Type Canopy CAB Operating weight (including operator's) kg (lbs.) 3850 (8488) 3996 (8810) 4008 (8836) 4154 (9158) Engine Type Water cooled 4 cycle diesel engine with 3 cylinder Model name D1703-M-DI­E4-US1 D1703-M-DI­E4-US2 D1703-M-DI­E4-US1 D1703-M-DI­E4-US2 Total displacement cc (cu.in) 1647 (100.5) Engine power SAE gross kW (HP) 18.5 (24.8) SAE net kW (HP) 17.8 (23.9) Rated speed rpm 2200 Low idle speed rpm 1300 ~ 1350 Performance Unit swing speed rpm 8.5 Travel speed Fast km/h (mph) 4.6 (2.9) Slow km/h (mph) 3.0 (1.9) Ground pressure (With operator) kPa (kgf/ ) [psi] 33.7 (0.34) [4.8] 35.1 (0.36) [5.0] 35.2 (0.36) [5.1] 36.6 (0.37) [5.3] Climbing angle % (deg) *58 (30) Angle in case of crossing slope % (deg) *27 (15) Dozer Width x Height mm (in.) 1700 x 341 (66.9 x 13.4) Max swing angle Left deg --­ 25 Right deg --­ 25 Boom swing angle Left rad (deg) 1.22 (70) Right rad (deg) 0.83 (48) Pressure connection for attachments Max.displacement (Theoretical) L (US gal)/ min 60.5 (15.9) (AUX1 port) 39.6(10.5) (Thumb port) Max. pressure MPa (kgf/ ) [psi] 17.2 (175) [2494] Fuel tank capacity L (US gal) 45.1 (11.9)

A Above dimensions are based on the machine with rubber trucks. A Specifications subject to change without notice. D With unloaded digging bucket. ( Q/C BUCKET ) D Firm compacted soil. D Operators must exercise extra caution and follow instructions in the operator's manual. D Worse condition or heavier attachment to the above will decrease climbing angle.

DESCRIPTION OF MACHINE PARTS

DESCRIPTION OF MACHINE PARTS

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

INSTRUMENT PANEL AND CONTROL ELEMENTS

B Instrument Panel, Switch

(1) LCD (3) Travel speed switch

(2) Horn switch (4) Starter switch

(10) User setting switch (Switch 1)

(11) - (Switch 2)

(12) AUX port enable switch (Switch 3)

(13) Information switch (Switch 4)

(14) Display selector switch (Switch 5)

(5) Throttle potentiometer (7) Auto idle control switch (6) Light switch (8) Angle blade control switch *Angle blade type only (9) One way hold switch Ref. page

Starter switch............................................................. 6 Display selector switch............................................... 7 LCD........................................................................... 7 Fuel gauge Coolant temperature gauge Hour meter Engine tachometer Glow indicator Warning lamp............................................................. 10 Information switch...................................................... 10 User setting switch..................................................... 12 Horn switch................................................................ 17 Light switch................................................................ 17 AUX port enable switch.............................................. 17 Auto idle control switch............................................... 18 Throttle potentiometer................................................ 18 Travel speed switch................................................... 18

B Control Pedals and Levers

(1) Drive lever (left) (2) Attachment control lever (left) (3) Boom swing pedal (4) Drive lever (right) (5) Attachment control lever (right) (7) Drive pedal (left) (6) Dozer control lever (8) Drive pedal (right) *Angle blade type Ref. page Drive lever (left) ............................................... 30 Attachment control lever (left) ......................... 34, 35,35, 34 Boom swing pedal ........................................... 35 Drive lever (right) ............................................. 30 Attachment control lever (right) ....................... 34, 35,35, 34 Dozer control lever .......................................... 32

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 level 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 grease points. Check all control lamps, indicators, tachometer 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.) Inspect ROPS / OPG (Top Guard Level I) for damage and if damage is found, contact your KUBOTA dealer for repair.

CHECKING THE DEVICES

BStarter Switch A [STOP] The key can be inserted at the "STOP" position. A [RUN] Turn the key one click from the "STOP" position to the "RUN" position. All the circuitry gets energized to start preheating. The glow indicator is displayed. To check for any lamp breakage, however, the lamp lights up and stays on for about 1 second. A [START] Move the pilot control lock lever to the "LOCKED" position. Turn the key from the "RUN" position another click to the "START" position. The starter motor is then activated to get the engine started. Release your hand from the key, and the key returns itself to the "RUN" position. In other words, once the engine has started, be sure to free the key.

A If the key is repositioned from "RUN" to "STOP" but not pulled out, the message "pull out key" appears onscreen. A With the key off and pulled out, nothing appears onscreen. [Status with the key off but not pulled out]

CHECKS BEFORE START

BDisplay Selector Switch BLCD for Normal Operation Press the display selector switch while the engine is C Fuel gauge running. The LCD meter display will change from one indication mode to the other. Change the two-mode display according to your jobs.

To avoid personal injury or death:

C AUX port in use

A Even with the starter key not yet inserted, press the electronic meter's user setting switch or the display selector switch, and the LCD shows the hour meter, fuel gauge, water temperature gauge and clock for 10 seconds. A Before adding fuel, be sure to stop the engine. A Be sure to keep open flame away from the machine. Otherwise a fire may result. With the starter key at the "RUN" position, the fuel remaining in the fuel tank is indicated in the block.

If the fuel runs short, open the cap and refuel the tank.

A If the fuel gauge indicator is near the "E" or the "Feed fuel" message appears, add fuel as soon as possible. If the indicator is near "E" and the machine is operated on a slope, the engine may run out of fuel.

A To open the fuel cap, keep the key inserted. CHECKS BEFORE START C Fuel supply The following functions are helpful when adding the fuel. The fueling progress can be monitored by a buzzer sound. Procedure 1. Press the user setting switch(switch 1) or the display selector switch(switch 5) on the meter with the key OFF. (Keep the key at OFF.)

2. Add fuel.

3. The buzzer sound interval changes according to the amount fuel added. As the fuel amount becomes close to full, the buzzer sound changes to continuous beeping.

A If the fuel is poured too fast, the buzzer may not sound according to the fueling process. A The moment when the fuel tank is nearly full, the buzzer starts beeping. A Look into the fuel tank when pouring the fuel. Listen to the buzzer sound for a rough estimate of the fill-up progress. 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 coolant temperature is indicated.

If the coolant temperature indicator is near "H", take the steps below. Depending on the coolant temperature, the warning message "Water temp is rising" or "Overheat Engine to idle for cooling" appears. In either case too, follow the same procedure below. 1. Discontinue the job.

2. Reduce engine rpm's to idle and keep it at idle for 5 minutes.

3. Stop the engine and check the following points (1)-(4).

(1) Low coolant level or leak

(2) Fan belt tension

(3) Mud or dust deposits on radiator

(4) Hydraulic oil leak

CHECKS BEFORE START C Overheat warning 1. If the coolant temperature becomes too high, the message "Water temp is Rising" appears onscreen for a certain period of time. The LCD then gets back to normal, but the coolant temperature sensor marker " "starts blinking at 1-second intervals.

(1) Coolant temperature sensor marker

A If this message is displayed, interrupt the work and lower the engine rpm, which will reduce the coolant temperature. 2. The overheat warning appears onscreen. Also the following message shows up on the LCD, and the engine automatically starts idling. (Acceleration is not operative.)

If the above message appears, take corrective measures, referring to the "Precautions in case of Overheat" section.

A When the coolant temperature has dropped, acceleration can be automatically enabled. 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.

C Glow indicator The indicator is displayed when the starter key is turned to the "RUN" position but the engine requires preheating. Wait until the indicator goes out, and then start the engine.

BWarning Lamp The warning lamp is used to indicate broken wire, short-circuit, fuel shortage and other problems. The warning lamp starts flashing in red if any problem occurs. If the system senses a in warning signal, the warning lamp starts flashing in yellow.

A If the warning illuminates, do not just look at the meter; carry out the appropriate inspection and correction accordingly. (See "REGULAR CHECKS AND MAINTENANCE WORK" section)

A If any warnings and problems are displayed, an alarm buzzer will beep. (See "LIST OF SCREENS" section for detail.) A Consult your local KUBOTA dealer from details concerning care and maintenance.

BLCD for Warning C Remaining fuel warning When the fuel level is very low, the

lamp (yellow) starts flashing and the following message appears in the display.

A After a short period of time, the display comes back to normal. A After a short period of time, the message shows up again. A Even while in the normal display mode, the warning lamp keeps on blinking. A To see what warning is being given out, press the display selector switch. The current warning can then be identified. C Battery charge warning If the starter key is turned to the "RUN" position without starting the engine, and the charging lamp stays off, the charging system has failed. If such occurs, immediately contact your local dealer for repair.

C Engine oil pressure low warning When the engine oil pressure drops too low, the

lamp (red) starts flashing and the following message appears in the display. Immediately stop the engine and check the engine oil level.

A If the starter key is turned to the "RUN" position without running the engine and the oil lamp stays off, then the hydraulic system may have failed. If such occurs, immediately contact your local dealer for repair. C Various error warnings If any components are detected to be in trouble, the following message or similar appears onscreen. (See "LIST OF SCREENS" section) For Example;

C Information

A "

mark" may appear together with a warning message. If such occurs, the details can be checked by pressing the information switch. When contacting your local dealer for repair, notify them of the information provided.

For Example; Press the information switch, and a detail such as shown below appears.

A Press the information switch again, and the display goes back to the previous screen.

User settings

A If you have any question, consult your local KUBOTA Dealer.

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

2. Press the switch 1 to make the log record/periodic check/clock set screen appear.

(1) Switch 1 (4) Switch 2 and 3 (2) Switch 5 (5) Switch 4

(3) Cursor

3. Press the switch 2 twice to move the cursor into position. Then press the save switch 5 to make the following screen appear. By pressing the switch 4, the year, month, day, hour and minute will be selected in this order. Select an item to readjust.

(1) Switch 5 (3) Switch 3 (2) Switch 2 (4) Switch 4 Press the

switch (Switch 2) and the numeric setting will be smaller. Press the

switch (Switch 3) and the numeric setting will be larger.

Hold down the

or

switch, and the numeric setting will change quickly. Press the

switch (Switch 4), and the year, month, day, hour and minute will be selected in this order. 4. Save the new setting with the

switch (Switch 5). Press this switch 5 again to set the clock.

[Status after setting the clock]

A Be careful not to accidentally press the switch 5 on the clock setting screen. Otherwise the seconds will be set to "00" and the clock will show the wrong time. A If the clock is interrupted, for example when the battery is disconnected, the following message appears onscreen. Press the switch 5 to set the clock again.

A When the user setting switch (Switch 1) is pressed on the clock setting screen, the clock is not readjusted and returns to the previous menu screen.

BReordering the year/month/day and Changing the AM/PM System to the 24­hour One 1. On the user setting screen, select "Various Settings".

2. Select "Calendar/Clock Set" menu screen.

3. Press the switch 5 and the following detailed screen shows up.

(1) Switch 1 (A) Year/month/day display

(2) Switch 2 and 3 (B) Clock display (3) Switch 4 (4) Switch 5

(1) Using the switch 2 and 3, move up and down the items. The year/month/day on Side (A) will be reordered.

(2) Using the switch 4, move the cursor to Side (B). Select the "AM/PM" system or the "24-hour" system.

(3) Press the switch 5, and the new settings will be made. If the switch 1 is pressed, the previous settings will remain.

BLog Record The log record helps you check the last 3-month operating record of the machine. Take the following steps. 1. Set the starter key to the "RUN" position.

2. Press the switch 1 to make the menu appear onscreen.

3. Press the switch 2 and 3 to select the log record. Fix this choice with the

switch (Switch 5).

(1) Switch 1 (3) Cursor (2) Switch 5 (4) Switch 2 and 3 4. Press the switch 5 to make the calendar appear onscreen. Press the switch 2, and the log records (machine's operating days and operating hours) for the last month and the month before last (90 days ago) can be reviewed. The highlighted days indicate when the machine was operated.

A Some days may appear marked with [-] when the log record is unknown because of a new setting of the clock, a disconnection of the battery or other factors.

BPeriodic Check The following message appears on the LCD 10 hours before a periodic check.

Press the switch 4 to see the check results.

Do the following servicing listed below.

A When the servicing has been completed, turn the key switch ON and OFF 10 times or more and the check screen automatically disappears. A When the periodic check interval has passed, the message "Periodic Check Passed" shows up. Immediately perform the specified servicing. A The periodic check screen can also be preset to be made to disappear manually only. To do this, it is necessary to select "Periodic Check" on the user setting menu. For make this setting, contact your local dealer.

BIf All the Check Points are not Displayed at a Glance on a Single Screen 1. Press the switch 4.

2. Each time the switch 2 or 3 is pressed, the check points scrolled up or down.

(1) Switch 4 (3) Switch 3 (2) Switch 2

C Service hour meter

When the hour meter reaches the hours circled in the maintenance list below, a message appears. The message shows up as follows. No. Check points Measures Hour meter indicator Intervals 50 100 250 500 600 750 1000 2000 1 Engine oil (CF-4) change every 500 hrs or every 1 year 2 Hydraulic oil every 1000 hrs 3 Air filter element Outer element replace every 1000 hrs Inner element every 1000 hrs 4 Fuel filter every 500 hrs 5 Engine oil filter every 500 hrs or every 1 year 6 Drive unit oil change every 500 hrs 7 Hydraulic return filter element replace every 500 hrs 8 Hydraulic suction filter element every 1000 hrs 9 Pilot filter replace every 1000 hrs 10 Idlor, Track roller, grease - every 2000 hrs 11 Breather filter replace every 500 hrs

First operation

BWhen the Check-up is Completed When the check-up is completed, perform the following procedure to make the Periodic Check disappear from the screen. 1. The message below appears onscreen to prompt the completion of the check-up.

2. To take a look at the check points, press the information switch. The check points appear onscreen.

3. When the check-up has been completed, press the switch 5. If not, press the switch 1 to go back to the previous screen.

BHorn Switch

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

C Night operation

To avoid personal injury or death: A When the working light and CAB light alone do not provide sufficient visibility, prepare additional stationary artificial lighting and observe safety rules for night work.

BAUX Port Enable Switch It is possible to freely readjust the actuator's maximum flow rate in the AUX operating mode. (See "AUXILIARY PORT OPERATION" section for detail.)

BAuto Idle Control Switch The switch is used to enable and disable the auto idle control. A Enable: Press the auto idle control switch. When the auto idle control is on, the auto idle lamp stays on. A Disable: Press the auto idle control switch once again. Now the auto idle control is deactivated (The auto idle lamp goes out.)

BThrottle Potentiometer 1. Sit down on the operator's seat and turn the throttle potentiometer clockwise (toward the high speed), and the engine revs up.

2. To stop the engine, turn the throttle potentiometer fully toward the low speed and keep the engine at the idling speed. Then set the starter key to the "STOP" position.

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

1. Press the travel speed switch. The buzzer beeps twice and the travel speed changes from low to high. The

symbol lights up. 2. Press the travel speed switch again, and the buzzer beeps once and the travel speed changes from high speed to low. The symbol goes out.

(1) Travel speed switch

(2) Speed indicator light

A When activating the travel speed switch, it must be pushed down completely. A Each time the travel speed switch is pressed, the travel speed is switched between low and high.

A The travel speed automatically changes into first speed (low speed) when the drive resistance increases while traveling second speed (high speed). Thereafter, when the resistance decreases, it returns to second speed. A If the tracks are clogged with sand or gravel while working on soft ground, lift up the track with the help of the boom, arm and bucket and dozer blade, and let the

CAB TYPE MACHINES BWiper/Washer Switch To engage the wiper, turn on the switch for the wiper when the starter key is in the "RUN" position. A further push on the switch will activate the washer system. Even when the wiper switch is in the "OFF" position, the washer switch functions if it is pressed. track rotate to remove the sand and gravel.

To avoid personal injury or death: A Do not push the dozer control lever into the float position as this will cause the machine to suddenly drop. 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.

BInterior Lamp To turn on the interior lamp, set the interior lamp switch to To avoid serious injury or death: A Do not work under the machine in this condition.

(1) Interior lamp (A) "ON"

(2) Interior lamp switch (B) "OFF"

BOpening/Closing of CAB Door 1. Unlock the CAB door and pull the knob. Open the CAB door fully until fixed into place.

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

(1) Door knob (outside) (3) Door knob (inside)

(2) Release lever

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

BOpening/Closing of Front CAB Window

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.

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.

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.

BEmergency Hammer

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 window pane in order to quick escape from the cab, if the window is not open.

AIR CONDITIONER BAir Flow Air in the CAB and fresh air introduced into the CAB flow as shown in the figure. Adjust the five air outlet ports to obtain the desired condition.

A Do not allow water to enter the fresh air port while washing the excavator.

BAir Control Vent C Front air outlet The front air outlets can be independently adjusted as required. To defrost the windshield, rotate the outlets toward the windshield. Position the inlet selector lever to the desired position.

BControl Panel

(1) Air conditioner switch (3) Temperature control dial

(2) Indicator light (4) Blower switch

C Air Conditioner Switch and Indicator Light Push this switch to activate the air conditioner. An indicator light will light up when the switch is set to "ON". Push switch again to turn air conditioner off, the indicator light will go off. C Temperature Control Dial Set this dial at the desired position to obtain the desired air temperature. Turn the dial to the right to obtain cooler air. Turn it to the left to obtain warmer air. C Blower Switch Air volume can be changed in three steps. At the "3" position, the largest air volume is obtained.

BOperation C Heating 1. Adjust the blower (1/2/3) switch and the temperature control dial to achieve the desired temperature level. C Dehumidifying-heating 1. Press and turn on the air-conditioner switch.

2. Turn on the blower (1/2/3) switch.

3. Adjust the temperature control dial to the "COOL" or an intermediate position to achieve the desired temperature level.

A Be sure to close the door while the air conditioner is ON otherwise, you may overload the compressor. C Cooling 1. Press and turn on the air-conditioner switch.

2. Turn on the blower (1/2/3) switch.

3. Adjust the temperature control dial to the "COOL" or an intermediate position to achieve the desired temperature level.

C Defrosting or demisting To defrost or demist the windshield, take the following steps. 1. Open the front air outlet and direct it to the windshield.

2. Set the blower switch and the temperature control dial to the "3" and "WARM" (leftmost) positions, respectively.

HANDLING THE SAFETY DEVICES BPilot Control Lock Lever

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". The pilot control lock lever is located on the left side.

OPERATION OF THE ENGINE

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.

A Do not use starting fluid or ether. A In order not to overload the battery and starter, avoid engaging the starter for more than 10 sec. A If the engine does not start in 10 sec., please wait 20 sec. or more, before attempting to restart. STARTING THE ENGINE

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.

4. Set the starter key to the "RUN" position. Hold the key at this position until the " "mark on the display panel disappears.

5. Now make sure the "

" and "

" marks appear onscreen. If not, the system has malfunctioned. Contact your local dealer for repairs. 6. Turn the key to the position "START" and release after the engine has started.

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

A The starter motor draws a large current. Avoid running it longer than 10 seconds continuously. If the engine fails to start within 10 seconds, set the key to the "STOP" position, wait for 20 seconds or longer, and repeat the above steps 5 thru 7. A If the battery is dead and must be connected to another battery with jumper cable, be sure to use a 12V battery. Never use 24V batteries.

A If you keep the pilot control lock lever at "UNLOCK" and try to start the engine, "Up Lever Lock" appears on the meter panel and the engine cannot be started. Before staring the engine, make sure the pilot control lock lever is set at the "LOCKED" position.

A When the engine starts, the meter may momentarily turn off and a beep may sound. This is not a problem.

STARTING THE ENGINE UNDER COLD CONDITIONS

To avoid personal injury or death: A Make sure that the pilot control lock lever is in the lock position during warm up. Start the engine in the following manner; 1. Make sure the auto idle control switch is at the "OFF" position (lamp off).

2. Pull the lock lever all the way back. ("LOCKED" position)

3. Insert the starter key into the starter switch.

4. Turn the throttle potentiometer toward "

" (high speed) position.

5. Set the starter key to the "RUN" position. Hold the key at this position until the " "mark on the display panel disappears.

6. Turn the starter key to the "START" position.

7. Once the engine starts, release your hand from the key. The key will return back to the "RUN" position.

8. If the engine fails to start, set the starter key to the "STOP" position, and repeat the above steps 5 thru 7.

A Let the engine warm up after start-up for approx. 10 minutes under no load conditions. If the hydraulic fluid temperature is too low, the operation will be affected. Do not operate the excavator under full load until the engine has sufficiently warmed up.

STARTING WITH AN AUXILIARY BATTERY

To avoid personal injury 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). 11.Replace the vent caps.

A This excavator has a negative (-) ground 12 Volt starting system. A Use only the same voltage when using an auxiliary battery. A Using a higher voltage will cause serious damage to the electrical system. When using an auxiliary battery, only the compatible (same) voltage is permissible.

CHECK POINTS AFTER STARTING THE ENGINE After starting the engine, but before starting operation, check the following points: 1. Put the throttle potentiometer in the middle between " " and "

"symbols and let the engine idle for approx. five minutes. This allows the engine lubricant to warm up and penetrate every part of the engine. 2. Once the engine has warmed up, check: A the warning lamp "Engine oil pressure" has gone out. A the warning lamp "Battery charge" goes out when engine speed is increased. A the color of the exhaust is normal and no abnormal noises or vibrations are heard or felt. A no fluid is leaking from pipes or hoses.

C Should any following conditions occur, stop the engine immediately. A The engine rpm's increases or decreases suddenly. A Sudden abnormal noises are heard. A Exhaust is black. A Warning lamp for engine oil lights up during operation.

A In these cases, the excavator must be checked and serviced by your local the KUBOTA dealer.

STOPPING THE ENGINE

To avoid personal injury or death: A Do not keep the bucket or dozer in an elevated position, as a person could accidentally touch the levers and cause serious accidents. 1. Place the bucket and dozer on the ground.

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

3. Remove the key.

4. Pull the 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 starter key is turned off. If the engine does not stop, pull the stop button to stop the engine.

(1) Stop button

(2) Starter key

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 by any chance the coolant temperature rises close to or above the boiling point ("H" on the water temperature gauge) (overheat condition), take the following steps. 1. Stop operating the machine. (Relieve the engine of any load.)

2. Do not shut off the engine suddenly. Before shutting off the engine, keep it idling under no load for about 5 minutes.

3. Stay away from the engine or overflow for 10 minutes or until the steam overflow stops.

4. Be sure that there is no danger of getting scalded. Pinpoint and remove the cause of overheat, referring to the "TROUBLESHOOTING" section. Once the issue is resolved, the engine may be restarted.

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 very important to run-in your excavator properly in order to achieve its full performance and longevity. During the running-in, the following points should be adhered to in all cases. BDo not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours A Let the engine warm up sufficiently in the cold season. A Do not let the engine rev-up more than necessary. BOil Change in the Run-in Stage The lubrication oil plays a specific and important role during the run-in phase of the excavator. The numerous movable parts are not yet run-in, so many fine metal particles are generated, which can cause damage and shorten the life of many components. Pay attention to the oil-change intervals and complete them sooner than later. See "REGULAR CHECKS AND MAINTENANCE WORK" section for more details on the oil-change intervals. BAdjusting the Operator's Seat

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

(1) Backrest tilt adjust lever (A) "UNLOCK" (2) Travel adjust lever (B) "UNLOCK" (3) Weight adjust lever (C) "TO INCREASE TENSION" (D) "TO DECREASE TENSION" C Tilt adjustment

Pull the backrest tilt adjust lever in the direction of [A] and move the backrest to the desired angle. C Travel adjustment Pull the travel adjust lever in the direction of [B] and slide the seat backward or forward, as required. The seat will lock in position when the lever is released. C Weight adjustment Turn the weight adjust lever to achieve the optimum suspension setting. C Height adjustment The seat height can be adjusted to three positions. To adjust the seat height, slowly raise the seat until it automatically engages in the next stop. When the seat is raised over the highest stop, it will be lowered automatically to the lowest position again. 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.

STARTING

To avoid personal injury or death: A No persons, other than those who have read and understand this manual and who are familiar with the excavator, should be allowed to use the excavator. A Do not allow any person other than the operator to ride on the excavator. A When operating, keep hands and body inside of the ROPS/OPG (Top Guard Level I) protective. A Do not touch the control levers and the pedals from outside the cab while the engine running. 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. Don't attempt to start the machine with the pilot control lock lever in the down position (A), if attempt is made the following message appears on the LCD.

(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.

A Recommended technique for working on a DRIVING slope.

To avoid personal injury or death: A Before starting the engine, make sure that no one is near the excavator. A Before operating the excavator, check the track direction. (Front idler and dozer blade to the front of the excavator). A Use extra caution when traveling across a slope or working sideways on a slope.

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

3. Activate the dozer control lever to raise the dozer. TURNS

(1) Dozer control lever (A) "Raise"

(2) Dozer (B) "Lower"

BDrive Levers (Right,Left)

To avoid personal injury or death: A When driving the excavator keep the dozer blade in front. To move the excavator forward, move the drive levers to (A) and to move in reverse, move the drive levers to (B) with dozer blade in front. If the dozer blade is behind operator station, then the controls are reversed, moving the excavator forward will require (B) and moving the excavator backwards will require (A), but this is not recommended. Pushing the drive levers forward, moves the excavator forwards, and vice-versa. The front of the excavator is the side where the dozer is located; the drive sprocket is in the rear of the excavator. 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. BPivot Turn

A Movement as illustrated is done with the dozer blade in front of the operator. C Change of Direction while Travelling 1. While travelling forward, bring the left drive lever into the neutral position; the excavator will turn in the direction of the arrow of the illustration below.

(1) Drive lever (left) (A) "Forward"

(2) Drive lever (right) (B) "Backward"

(C)"Straight"

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

BSpin Turn When both drive levers are activated in the opposite C Change of Direction while Stationary directions, both tracks will rotate with the same speed but 1. Push the left drive lever forward; in opposite directions. The center of rotation is the center the excavator will turn in the direction of the arrow of of the excavator. the illustration below.

(B) "Right spin turn"

UP AND DOWNHILL DRIVING

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

[DOWNHILL TRAVELING]

PARKING ON A SLOPE

To avoid personal injury or death: A When the excavator is parked or left unattended on a slope, be sure to put the bucket on the ground and place all control levers in neutral position, then brace the tracks with chocks.

OPERATION OF THE DOZER 1. To raise the dozer, pull back the control lever. To lower the dozer, push the control lever forward. To float the dozer, push the control lever more forward to the locked position.

(1) Dozer control lever (A) "Raise"

(2) Dozer (B) "Lower"

(C) "Float" (Locked position) 2. While undertaking earth moving work, control both drive levers with the left hand and the dozer control lever with the right hand. 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 lower position (Pattern A) or the upper position (Pattern B). A Engage the lever lock to prevent accidental pattern change. A Familiarize yourself with the pattern selected by operating slowly. BPattern Change Position the pattern selector lever to the desired position.

Lever Position Attachment Control Lever (Left) Attachment Control Lever (Right) Pattern A A B C D Boom down Boom up Swing left Swing right Arm out (up) Arm in (crowd) Bucket crowd Bucket dump Pattern B A B C D Arm out (up) Arm in (crowd) Swing left Swing right Boom down Boom up Bucket crowd Bucket dump

(1) Pattern selector lever (A) "Pattern A" (Two Pattern Selection System:TPSS) (B) "Pattern B" OPERATION OF THE BOOM To raise the boom, pull the attachment control lever back. The boom is equipped with a cushion cylinder which helps prevent excavated material in the bucket from falling out. At low hydraulic oil temperature, (e.g. after starting the engine in cold weather) the cushioning function will be effected for a short period of time (approx. 3 to 5 seconds). This condition results from the viscosity of the hydraulic oil and is not a sign of malfunction. The cushion cylinder will operate normally as the oil warms up. To lower the boom, push the attachment control lever forward. OPERATION OF THE ARM Pull back the attachment control lever and the arm will be pulled in. To move the arm out, push the control lever towards the front.

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

A When lowering the boom, make sure that it does not hit the dozer and that the bucket teeth do not touch the dozer. OPERATION OF THE BUCKET

To dig using the bucket, move the right attachment control BUnit Swing Operation lever from the neutral position, left. Moving the control 1. Move the control lever to the left and the upper lever right, moves the bucket outwards and empties its structure will turn to the left. 2. Move the control lever to the right and the upper

contents. structure will turn to the right.

UNIT SWING AND BOOM SWING OPERATION

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 Be sure to lock the boom swing pedal when the boom swing function is not used.

BBoom Swing Operation 1. Flip the pedal lock up to unlock the pedal.

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

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

A Do not operate the left attachment control lever abruptly from right to left (or vice versa), because the inertia may cause high impact loads on the swing gear and the swing motor, shortening the life of the excavator. AUXILIARY PORT OPERATION

The auxiliary port enable switch is used to operate hydraulic attachment such as hammers. BSelecting the Action Modes

The AUX port has been factory-set to three action modes. You can select one of them. Up to five action modes can be preset. Each time the AUX port enable switch (switch 3) is pressed, the action modes change over one after another. And the icon and action mode number on the screen change accordingly.

A When turning the starter key to the "RUN" position, the action mode will return to the last action mode used. C Checking the settings of each action mode When an action mode is selected and the " " mark BAUX Port Handling Procedure appears at the lower right of the icon, the flow volume 1. Turn the starter key to the "RUN" position. setting gets displayed by pressing the switch 4. Let the engine warm up after start-up for approx. 10 minutes under no load conditions.

[Display in AUX 1 modes] 2. Lower the pilot control lock lever (UNLOCK).

3. Push the AUX port enable switch (switch 3).

A If the pilot control lock lever is at the "LOCKED" position, the following message appears onscreen. Down this lever to the "UNLOCK" position and then press the AUX port enable switch (switch 3).

4. Move the AUX port knob of the right attachment (1) Attachment control lever (right) (B) "AUX port 2" control lever to the right to send oil to the AUX port 1. (2) One way hold switch (right) Move the AUX port knob to the left to send oil to the AUX port 2.

A Even if the one way hold switch of the right attachment control lever is pressed, no function is assigned. In this case, the following message appears onscreen.

A Proportional control of the AUX port knob allows for slow-to-fast movement of attachment. Example; If you move the AUX port knob halfway, the attachment will move at approximately one-half speed. C One way hold Press the one way hold switch of the right attachment control lever, and the oil continues to flow through the AUX port 2. Press this switch again or move the AUX port knob, and the oil flow is interrupted.

3. Each time the switch 5 is pressed, the mode number changes. Select your desired setting mode number. BSetting the Maximum Flow Volume The AUX port has been factory-set to three action modes 1, 2 and 3. The action modes 4 and 5 can also be preset. C How to make the settings 1. With the starter key at the "RUN" position, press the user setting switch (switch 1), and the following display appears onscreen. 4. Take the following steps to set the icons. Each time the switch 4 is pressed, the setting cursor (arrow mark) shifts position. Move the cursor above the icon. (1) User setting switch (switch 1) 2. Press the switch 2 or 3 to select "AUX Flow Ctrl Set", and then press the switch 5.

5. Each time the switch 2 or 3 is pressed, the icon changes. Select your desired icons.

C Types of AUX icons

(1) AUX (Standard) (6) Clamshell

(2) Brush cutter (7) Breaker

(3) Rotary grapple (8) Tilt bucket

(4) Grapple (9) Thumb

(5) Auger (10) Blank (disable)

A There is no relationship between the icons and the flow control settings. Select icons to suit the images of attachments to be connected. A In an action mode with the disable icon preset, such action mode is skipped even if selected. Take an example of the following settings: AUX (standard) icon for action mode 1, Breaker icon for action mode 2, Disable icon for actions modes 3, 4 and 5.

Each time the AUX port enable switch (switch 3) is pressed, the display changes from action mode 1, action mode 2 to normal mode in this order. [Setting example]

6. Set the maximum flow volume for each AUX port. Press the switch 4 to move the setting cursor (arrow mark) to the port 2 position of Thumb port at the right.

7. Press the switch 2 or 3 to preset the maximum flow volume. Set the bar to the highest level, and the flow volume will be maximized. Set the bar to the lowest level (no bar displayed), and there will be no oil flow. Then press the switch 4 to go to the next port, and make the settings for all the other ports.

(1) Switch 2 (Lower flow volume) (A) "MAX. flow volume"

(2) Switch 3 (Higher flow volume) (B) "Output interrupted" (3) Switch 4

A Some attachments might not be activated even when the bar level is still somewhat above the lowest position. Or even when the bars of ports 1 and 2 are at the same level, the same speed might not be achieved. This does not indicate a machine problem, however. Readjust the bar to the optimum level according to your attachment manual. A Suppose that the same attachment is mounted on another machine. Even if the same flow control setting is made, the same speed cannot be achieved. Make an optimum setting on each machine. 8. Go back to Step 3 to make settings for the next action mode. When all the settings of all the action modes have been made, press the switch 1 to return to the normal screen.

(1) Switch 1 C AUX port MAX. Flow volume

Thumb port AUX 1 port MAX. flow volume (Theoretical) L (US gal) /min 39.6 (10.5) 60.5 (15.9) MAX. pressure MPa (kgf/cm ) [psi] 17.2 (175) [2500] 17.2 (175) [2500]

A When the AUX port is not used for a long period, dirt particles can settle in the lower part of the AUX port lines. When the plugs on the AUX port lines are removed to connect attachments, drain approx. 100 cc (3.4 oz) of oil before making connections.

HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM

To avoid personal injury or death: A Relieve residual hydraulic pressure immediately after the engine has stopped. 1. Lower the attachments and the blade down to the ground.

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

3. After stopping the engine, turn the key to "RUN" position.

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

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

(2) Attachment control lever (left) (B) "LOCKED"