Kubota U35-4 User manual

1BAAEALAP0090.eps
1BAAEALAP0100
1BAAEALAP01001BAAEALAP0090
OPERATOR'S MANUAL
English (Australia)
Code No. RC788-8131-5
MODEL U35-4
U
3
5
-
4
PRINTED IN JAPAN © KUBOTA Corporation 2013
READ AND SAVE THIS MANUAL

U35-4
AW . A . 11 - 13 . 1 . AK
LIST OF ABBREVIATION
Abbreviations Description
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
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

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''
Warning lamp ''Auto Idle (AI) Lamp''
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
3
SAFETY FIRST
IMPORTANT :
NOTE :
3DANGER :
3WARNING :
3CAUTION :
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
Indicates that equipment or property damage could result if
instructions are not followed.
Gives helpful information.
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.
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.

CONTENTS
SAFE OPERATION ............................................................................................ -1
DEALER SERVICE...................................................................................................... 1
TECHNICAL DATA...................................................................................................... 3
DESCRIPTION OF MACHINE PARTS........................................................................ 4
INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 5
CHECKS BEFORE START ......................................................................................... 7
DAILY CHECKS....................................................................................................... 7
CHECKING THE DEVICES ..................................................................................... 7
Starter Switch ................................................................................................................... 7
Display Selector Switch .................................................................................................... 8
LCD for Normal Operation ................................................................................................ 8
Warning Lamp ................................................................................................................ 11
LCD for Warning ............................................................................................................. 11
Setting the Clock............................................................................................................. 13
Reordering the year/month/day and Changing the AM/PM System to the 24-hour One 14
Log Record .....................................................................................................................15
Periodic Check................................................................................................................ 16
If All the Check Points are not Displayed at a Glance on a Single Screen..................... 16
When the Check-up is Completed..................................................................................18
Horn Switch ....................................................................................................................18
Light Switch ....................................................................................................................18
AUX Port Enable Switch ................................................................................................. 18
Auto Idle Control Switch .................................................................................................19
Throttle Potentiometer .................................................................................................... 19
Travel Speed Switch....................................................................................................... 19
CAB TYPE MACHINES ......................................................................................... 20
Wiper/Washer Switch ..................................................................................................... 20
Interior Lamp...................................................................................................................20
Opening/Closing of CAB Door........................................................................................ 21
Opening/Closing of Front CAB Window..........................................................................21
Opening/Closing of Side CAB Window...........................................................................21
Emergency Hammer....................................................................................................... 21
AIR CONDITIONER ............................................................................................... 22
Air Flow........................................................................................................................... 22
Air Control Vent ..............................................................................................................22
Control Panel..................................................................................................................23
Operation........................................................................................................................ 23
HANDLING THE SAFETY DEVICES..................................................................... 23
Pilot Control Lock Lever.................................................................................................. 23
OPERATION OF THE ENGINE................................................................................. 24
STARTING THE ENGINE ...................................................................................... 24
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 25
STARTING WITH AN AUXILIARY BATTERY ....................................................... 26
Observe Following Guidelines when Starting with an Auxiliary Battery..........................26

CONTENTS
CHECK POINTS AFTER STARTING THE ENGINE ............................................. 26
STOPPING THE ENGINE...................................................................................... 27
Engine Stop Button......................................................................................................... 27
Precautions in case of Overheat..................................................................................... 27
EXCAVATOR OPERATION ...................................................................................... 28
RUNNING-IN OF THE NEW EXCAVATOR........................................................... 28
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..28
Oil Change in the Run-in Stage......................................................................................28
Adjusting the Operator's Seat.........................................................................................28
Seat Belt ......................................................................................................................... 29
STARTING ............................................................................................................. 29
Pilot Control Lock Lever.................................................................................................. 29
DRIVING ................................................................................................................ 30
Drive Levers (Right,Left)................................................................................................. 31
TURNS................................................................................................................... 31
Pivot Turn ....................................................................................................................... 31
Spin Turn ........................................................................................................................ 32
UP AND DOWNHILL DRIVING.............................................................................. 33
PARKING ON A SLOPE ........................................................................................ 33
OPERATION OF THE DOZER .............................................................................. 33
TWO PATTERN SELECTION SYSTEM (TPSS) ................................................... 34
Pattern Change............................................................................................................... 34
OPERATION OF THE BOOM................................................................................ 35
OPERATION OF THE ARM................................................................................... 35
OPERATION OF THE BUCKET ............................................................................ 36
UNIT SWING AND BOOM SWING OPERATION.................................................. 36
Unit Swing Operation...................................................................................................... 36
Boom Swing Operation................................................................................................... 36
AUXILIARY PORT OPERATION ........................................................................... 37
Selecting the Action Modes ............................................................................................37
AUX Port Handling Procedure........................................................................................38
Setting the Maximum Flow Volume ................................................................................40
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 45
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION ............................... 46
AUTO IDLE (AI) OPERATION ............................................................................... 47
IMPORTANT INFORMATION ON EXCAVATOR OPERATION ............................ 48
TRANSPORTING THE EXCAVATOR ON A VEHICLE............................................. 49
LIFTING OF THE EXCAVATOR................................................................................ 51
MAINTENANCE......................................................................................................... 53
MAINTENANCE INTERVALS ................................................................................ 53
OPENING AND CLOSING OF COVERS............................................................... 56
Opening/Closing of the Engine Hood ............................................................................. 56
Opening/Closing of the Side Cover ................................................................................56
Where to store the Tool ..................................................................................................57
Cup Holder......................................................................................................................57
Where to store the Grease Gun...................................................................................... 57
Where to keep Operator's Manual..................................................................................57
DAILY CHECKS..................................................................................................... 58

CONTENTS
Checking Coolant Level.................................................................................................. 58
Checking Fuel Level .......................................................................................................58
Checking Engine Oil Level.............................................................................................. 59
Checking Hydraulic Oil Level.......................................................................................... 59
Checking V-belt .............................................................................................................. 60
Checking Radiator and Oil Cooler .................................................................................. 60
Checking Washer Liquid................................................................................................. 61
Checking and Cleaning Engine and Electrical Wiring.....................................................61
Washing Whole Machine ................................................................................................ 61
Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)................ 61
Greasing Bucket Pin ....................................................................................................... 62
Greasing Boom Swing Fulcrum......................................................................................62
REGULAR CHECKS AND MAINTENANCE WORK ................................................. 63
EVERY 50 SERVICE HOURS ............................................................................... 63
Draining the Water from the Fuel Tank...........................................................................63
Draining Water Separator...............................................................................................63
Checking Battery Condition ............................................................................................64
Greasing Swing Bearing Teeth.......................................................................................65
EVERY 200 SERVICE HOURS ............................................................................. 66
Adjusting V-belt Tension................................................................................................. 66
Checking Radiator Hoses and Clamps........................................................................... 67
Grease Swing Ball Bearing.............................................................................................67
Inspection and Cleaning Air Filter Element.....................................................................67
Air Filter Maintenance.....................................................................................................68
Checking Fuel Line and Intake Air Line .......................................................................... 68
AIR CONDITIONER ............................................................................................... 69
Cleaning Air Filter ........................................................................................................... 69
Checking Air-Conditioner Condenser ............................................................................. 69
EVERY 250 SERVICE HOURS ............................................................................. 70
Changing Engine Oil (First Engine Oil Change after 50 Service Hours) ........................ 70
Replacing Engine Oil Filter Cartridge (First Engine Oil Filter Change after 50 Service
Hours).............................................................................................................................70
EVERY 500 SERVICE HOURS ............................................................................. 71
Drive unit Oil Change(First Oil Change of the 50 hours) ................................................71
Replacing Fuel Filter Cartridge.......................................................................................71
Replacing Hydraulic Return Filter Element (First replacement after 250 service hours) 72
Replacing Breather Filter ................................................................................................ 72
Replacing Fan Belt ......................................................................................................... 72
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) 73
Hydraulic Oil Check with Hydraulic Hammers ................................................................ 74
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
Checking Injection Pump ................................................................................................ 74

CONTENTS
ANNUAL SERVICING............................................................................................ 75
Electrical Wiring and Fuses ............................................................................................75
Checking the Electrical Circuit ........................................................................................ 75
Checking Air-Conditioner Pipes and Hoses....................................................................75
BIENNIAL SERVICING .......................................................................................... 75
Replacing Air-Conditioner Pipes and Hoses...................................................................75
Replacement of Radiator Hoses and Hose Clamps ....................................................... 75
Changing Radiator Coolant ............................................................................................75
Replacing Fuel Hoses and Hose Clamps.......................................................................76
Replacing Intake Air line.................................................................................................77
SERVICING AS REQUIRED.................................................................................. 77
Checking Amount of Refrigerant (gas) ........................................................................... 77
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
APPENDICES............................................................................................................ 90
MAIN DIMENSIONS .............................................................................................. 90
LIFTING CAPACITY .................................................................................................. 91
LIST OF SCREENS................................................................................................... 94
LIST OF NORMAL SCREENS............................................................................... 94
NAVIGATION LIST OF SCREENS ........................................................................ 95

-1SAFE 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. 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.
AROPS: Roll-Over Protective Structure
AOPG (Top Guard Level I): Operator Protective
Guards of Top Guard Level I
OPG (Top Guard Level I) in accordance with
ISO10262 is equivalent in definition to FOPS (Falling
Object Protective Structure).
Always use the seat belt when the machine is
equipped with a ROPS/OPG (Top Guard Level I) 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.
8. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.
1. BEFORE OPERATION
(1) Seat belt
(1) Pattern selector lever
(Two Pattern Selection System:TPSS)
(A) "Pattern A"
(B) "Pattern B"

SAFE OPERATION-2
9. Check the surroundings carefully before using the
excavator or when attachments are being attached.
APay attention to the overhead clearance with electric
wires.
ACheck for pipes and buried cables before digging. Use
your local utility service to check for such items (if
available).
ACheck for hidden holes, obstacles, soft underground,
and overhangs.
ADo not allow any persons within the working range of
the excavator during operation.
10.Do not allow anyone to use the excavator until they
have been advised of the work to be performed and
they have indicated that they have read and
understood the operator's manual.
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.
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.
(1) Helmet
(2) Clothing fit for work
(3) Tight seams
(4) Good grip footwear
(5) Well fitting cuffs
(6) Working gloves
(7) Soft hat
(8) Towel
(9) Baggy trousers
(10) Loose cuffs of the shirt
(11) Baggy shirt
(12) Sandals or open-toed shoes