Kubota U35-4 Operator's Manual


The Kubota U35-4 excavator operator's manual is available to view online, download, or order hard copy. This manual features proper operations, maintenance, and safety information.

Kubota U35-4 Operators Manual

(Click Manual Cover Image to Download)

The manual has been converted to plain text shown below for your convenience.

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 pressur