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MINI EXCAVATOR
MODELS
KX057-4
U48-4
GB
U55-4
OPERATING INSTRUCTIONS
RG948-8135-6 - Original - 07/2014
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Dear valued customer,
please fill in the form below. Your information will help us to help you.
Type:
Year of construction:
Serial #:
Shipment date:
Please contact your KUB O TA de ale r for any add iti ona l in form a tio n or tr oubl esho oti ng pr oced ur es not me nti one d
in these op erating instructions.
We also point out tha t the conte nts of the se operatin g instruc tions are n ot part of an earlier ex isting agr eement,
promise or legal relationship or amend this. All responsibilities arise of the respective sales contract containing the
complete and exclusively valid contractual warranty, refer to the "Duties, liability and warranty" section (page 14).
This documentation does neither extend nor restrict the contractual warranty.
KUBOTA Baumaschi nen Gm bH r es erv es the right to c han ge t he i nfo rmati on c on tai ned in this d ocu men t wi th respect to future technical development without altering the basic characteristics of the excavators described herein
and without amending this document.
Distribution and reproduction of this documentation and disclosure of its content are not allowed unless expressly
approved by the manufacturer. Violators of the above terms are liable for compensation for damages.
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Tables
Table of contents
Abbreviations............................................................................................................................................. 8
General symbols ....................................................................................................................................... 9
General inf o rmation ........................ .. ............. .. ... ............. .. ............. .. ... ............. .. ............. ............. 11
Foreword................................................................................................................................................. 11
EC declaration of conformity................................................................................................................... 11
Date of issue of the operating instructions .............................................................................................. 12
Operating personnel................................................................................................................................ 12
Location of the operating instructions...................................................................................................... 12
Spare parts.............................................................................................................................................. 13
Safety rules........................ ... .. ............. .. .............. .. .. ............. .. .............. .. .. ............. ... ..................... 14
Basic safety instructions.......................................................................................................................... 14
Duties, liability and warranty.................................................................................................................... 14
Safety symbols........................................................................................................................................ 15
Approved use .......................................................................................................................................... 16
Unapproved use...................................................................................................................................... 16
Special duties of the owner..................................................................................................................... 17
Noise emission and vibration .................................................................................................................. 17
Noise emission................................................................................................................................... 17
Vibrations ........................................................................................................................................... 17
Safety labels on the excavator................................................................................................................ 18
Safety devices......................................................................................................................................... 26
Locking the controls ........................................................................................................................... 26
Engine stop knob ............................................................................................................................... 26
Protective structure canopy and cab.................................................................................................. 27
Emergency hammer........................................................................................................................... 27
Pipe safety valve ................................................................................................................................ 28
Overload warning function ................................................................................................................. 28
Hazards coming from the hydraulic system ............................................................................................ 29
Fire protection ......................................................................................................................................... 29
Recovery, loading and transport...... ...........................................................................................31
Safety rules for recovery ......................................................................................................................... 31
Safety rules while loading with a crane................................................................................................... 31
Safety rules for transport......................................................................................................................... 32
Recovery................................................................................................................................................. 33
Hoisting the excavator with a crane ........................................................................................................ 33
Transport on a flat bed trailer.................................................................................................................. 35
Description of the excavator.................. ..................................................... ................................. 37
Model overview ....................................................................................................................................... 37
Model KX057-4, U48-4 and U55-4..................................................................................................... 37
Dimensions.............................................................................................................................................. 38
Dimensions KX057-4, U48-4 and U55-4............................................................................................ 38
Specifications .......................................................................................................................................... 40
Identification of the excavator.................................................................................................................. 43
Serial # of the machine ...................................................................................................................... 43
Engine number................................................................................................................................... 44
Equipment............................................................................................................................................... 44
Standard equipment........................................................................................................................... 44
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Tables
Assembly and functions................................................................................................................45
Component overview............................................................................................................................... 45
Operator’s place ...................................................................................................................................... 46
Left control console ............................................................................................................................46
Description of the components of the left control console ...............................................................46
Drive levers and control pedals ..........................................................................................................47
Drive levers and control pedals – description .................................................................................. 47
Right control console.......................................................................................................................... 48
Description of the components of the right control console ............................................................. 48
Display and control unit - description............................................................................................... 50
Other equipment to be found at the machine.......................................................................................... 51
Wiper/washer system............................. ....... ...... ....... ...................................... ....... ...... ....... . ...........51
Interior lighting ................................................................................................................................. 51
Fuse box............................. ...... ....... ...... ....... ...... ....... ...... ....... ...... ...... ............................................. 51
Tool compartment (KX057-4)........................................................................................................... 52
Tool compartment (U48-4 and U55-4).............................................................................................52
Main battery........................................................................................................................................52
Battery cut-off switch .......................................................................................................................... 53
Cup holder ....................................................................................................................................... 53
Tank filler neck and fill level monitor...................................................................................................53
Tank filler neck and fill level monitor with suction pump (optional only KX057-4)............................54
Rear view mirror ................................................................................................................................. 54
Heating and air-conditioning system (optional) ....................................................................................... 54
Engine compartment ........................ ....... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...................................... 56
Hydraulic system .....................................................................................................................................57
Radiator and condenser .......................................................................................................................... 57
Operation ........................................................................................................................................58
Safety rules for operation ........................................................................................................................ 58
Safety for children........... ....................................... ....... ...... ....... ...... ...... ....... ...... ....... ...... ...................59
Guiding the operator...........................................................................................................................59
Working in the vicinity of overhead power lines.................................................................................. 60
Working in the vicinity of underground power lines ............................................................................60
Initial operation ........................................................................................................................................ 61
Setting the display language .............................................................................................................. 61
Setting the time...................................................................................................................................62
Date and time display format..............................................................................................................63
Running-in of the excavator................................................................................................................ 64
Special maintenance instruc tio ns.............................................. ...... ...... ....... ...... ....... ...... ....... .... ........64
Operating the excavator .......................................................................................................................... 64
Pre-operational services.....................................................................................................................64
Checking the engine oil level ........... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... ....... ... .........64
Checking the coolant level......................................... ...... ....... ...... ...... ....... ...... ....... ......................... 65
Checking the radiators and the condenser......................................................................................65
Checking the V-belts.... ....... ...... ....... ...... ....... ...... ....................................... ...... ....... ...... ...... .............66
Checking the exhaust system for leaks ...........................................................................................66
Checking the oil level of the hydraulic system ................................................................................. 67
Greasing the bucket bolts and bucket linkage bolts......................................................................... 67
Checking the electric cables and connec ti ons.............................. ...... ....... ...... ....... ...... ....... ...... ...... 68
Checking fuel level, coolant temperature and time.......................................................................... 68
Setting up the workplace .................................................................................................................... 68
Getting on the excavator.................................................................................................................. 68
Adjusting the operator’s seat ...........................................................................................................69
Horizontal seat adjustment (seat stand-off)................................................................................... 69
Seat height adjustment (knee height)............................................................................................69
Spring adjustment (operator’s weight)...........................................................................................69
Backrest adjustment................................................................... ...... ....... ...... ....... .........................69
Seat belt ........................................................................................................................................70
Rear view mirrors adjustment ..........................................................................................................70
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Safety instructions for starting the engine ............................................................................................... 70
Starting the engine ............................................................................................................................. 71
Stopping the engine ............ ....................................... ...... ...... ....... ...... ....... ...... ....... ...... ..................... 72
Observation of the displays after starting and during operation......................................................... 73
Driving the excavator ......................................................................................................................... 75
Driving.............................................................................................................................................. 76
Turning ............................................................................................................................................ 77
During driving................................................................................................................................ 77
From a standing position............................................................................................................... 78
Turning on the spot ....................................................................................................................... 78
Driving uphill and downhill............................................................................................................... 79
Notes for rubber crawler operation.................................................................................................. 79
Making sharp turns........................................................................................................................ 80
Protecting the crawler against salt ................................................................................................ 80
Operating the controls during excavation work.................................................................................. 80
Note on using wider and deeper buckets ........................................................................................ 81
Operating the dozer.................................................................... ...... ....... ...... ....... ...... ....... . ............. 81
Overview of control lever functions (standard setting)..................................................................... 82
Operating the boom.................................................................... ...... ....... ...... ....... ...... ....... .. ............ 82
Operating the arm ...... ....... ...... ....... ...... ....... ...... ....... ...... ...... ....... ....................................... .............. 83
Operating the bucket ........ ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ........................................ 84
Swivelling the swivel frame.............................................................................................................. 85
Swinging the boom .......................................................................................................................... 85
Operating the auxiliary ports .............................................................................................................. 86
Activating the auxiliary port function.............................................................................................. 86
Auxiliary port 1................................................................................................................................. 87
Auxiliary port 2................................................................................................................................. 87
One way hold operation ................................................................................................................ 88
Operating modes............ ...... ....... ...... ....... ...... ....... ...... ...... ....................................... ....... .............. 88
Flow rate setting............................................................................................................................ 90
Return change valve for direct return flow....................................................................................... 94
Pressure relief of the hydraulic system............................................................................................ 95
Pressure relief of the auxiliary ports ................................................................................................ 95
Placing out of operation........................................................................................................................... 97
Operating the heating and air-conditioner system (optional)................................................................... 98
Heating the cab.................................................................................................................................. 98
Cooling the cab .................................................................................................................................. 98
De-icing or demisting the windows..................................................................................................... 99
Operating the wiper/washer system........................................................................................................ 99
Switching on the windscreen wiper.................................................................................................... 99
To turn on the washer system.......................................................................................................... 100
Operating the room light........................................................................................................................ 100
Operating the rotary beacon.................................................................................................................. 100
Operating the 12 V plug ........................................................................................................................ 101
Opening and closing the cab door......................................................................................................... 101
Opening the cab door from outside.................................................................. ....... ...... ....... ...... ...... 101
Closing the cab door ........................................................................................................................ 101
Opening the cab door from the inside.................................... ....... ...... ....... ...... ....... ...... ....... ...... ... ... 102
Opening and closing the windows......................................................................................................... 102
Front window.................................................................................................................................... 102
Side window..................................................................................................................................... 103
Operating the working light (boom)....................................................................................................... 103
Operating the working lights (cab).............................................................................................
old weather operation ......................................................................................................................... 104
C
Necessary preparations prior to the winter season.......................................................................... 104
Operation during the winter season ................................................................................................. 104
Jump-starting the excavator.................................................................................................................. 105
............ 103
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Emergency stop functions ................................................. ...... ....... ...... ...... ....... ...... ....... ...... .................106
Engine stop knob..............................................................................................................................106
Manual lowering of the front attachments.........................................................................................106
Filling up the washer system ................................................................................................................. 107
Refuelling the excavator....................................... ...... ....... ...... ....... ...... ...... ....... .................................... 107
Refuelling the excavator equipped with optional suction pump (only KX057-4)...............................108
Refuelling the excavator using the optional suction pump (optional only KX057-4).........................108
Fill level monitor when refuelling ...................................................................................................... 109
Bleeding the fuel system ....................................................................................................................... 110
Replacing the fuses....................................... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... .......................110
Fuse layout of the fuse box ......... ....... ...... ....... ...................................... ....... ...... ....... ...... .................111
Main fuses ........................................................................................................................................112
Operating the battery cut-off switch.......................................................................................................112
Opening and closing the engine compartment cover ............................................................................ 112
Opening/closing the side cover ............................................................................................................. 113
Opening/closing the tool compartment (KX057-4 only)......................................................................... 114
Opening/closing the service covers....................................................................................................... 114
Opening/closing the front service covers............................ ....... ...... ...... ....... ...... ....... ....................... 114
Opening/closing the left service cover (optional KX057-4 only)....................................................... 114
Replacing the bucket..................................... ....... ...... ....... ...... ....... ...... ...... ....... .................................... 115
Anti-theft system...................................................................... ....... ...... ...... ....... .................................... 115
Black (individual) key........................................................................................................................115
Red key (for registering)...................................................................................................................116
The key system ................................................................................................................................116
Registering a black key for the machine........................................................................................... 117
Troubleshooting ...........................................................................................................................119
Safety rules for troubleshooting............................................................................................................. 119
Troubleshooting: Before operation ........................................................................................................ 119
Troubleshooting: Operation................................................................................................................... 120
Troubleshooting: Display indications..................................................................................................... 121
Maintenance .................................................................................................................................126
Safety rules for maintenance................................................................................................................. 126
Personnel requirements ........................................................................................................................126
General maintenance chart: 50 to 500 hours of operation .................................................................... 127
General maintenance chart: 550 to 1000 hours of operation ................................................................ 128
Servicing maintenance chart: 50 to 500 hours of operation ..................................................................129
Servicing maintenance chart: 550 to 1000 hours of operation ..............................................................130
Cleaning the excavator..........................................................................................................................131
Servicing................................................................................................................................................ 131
Refilling coolant ..................... ...... ....... ...... ....... ...... ....... ...... ....................................... .......................131
Cleaning the radiators and the condenser........................................................................................132
Checking, adjusting and replacing the V-belts .................................................................................133
Checking the coolant hoses ......................................... ...... ....... ...... ...... ....... ...... .............................. 133
Replacing the coolant.......................................................................................................................134
Replacing the engine oil and oil filter................................................................................................ 135
Draining the engine oil ..................... ...... ....... ...... ....................................... ...... ....... ...... .................135
Replacing the oil filter..................................................................................................................... 135
Filling the engine oil.......................................................................................................................136
Checking, cleaning and replacing the air filter.................................................................................. 137
Replacing the fuel filter.....................................................................................................................138
Checking and emptying the water separator....................................................................................138
Cleaning the water separator ........................................................................................................... 139
Draining the fuel tank........................................................................................................................139
Checking the fuel lines and the air intake hoses..............................................................................140
Replacing the return filter in the hydraulic oil tank............................................................................ 140
Replacing the tank breather filter......................................................................................................141
Replacing the pilot circuit filter..........................................................................................................142
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Replacing the suction filter in the hydraulic oil tank ......................................................................... 143
Topping up/changing the hydraulic oil................. ....................................... ...... ....... ...... ....... ...... .. .... 144
Draining the hydraulic oil ............................................................................................................... 144
Filling the hydraulic oil ................................................................................................................... 145
Battery service ................................. ...... ....... ...... ....................................... ...... ....... ...... .. ................. 146
Checking the battery...................................................................................................................... 146
Charging the battery ...................................................................................................................... 146
Installing/uninstalling and replacing the battery............................................................................. 147
Lubrication........................................................................................................................................ 148
Greasing the swivel gear ............................................................................................................... 148
Greasing the pitch bearing............................................................................................................. 148
Greasing the swing bracket........................................................................................................... 149
Other greasing points .................................................................................................................... 149
Checking and tensioning the crawler tension................................................................................... 150
Checking the crawler tension......................................................................................................... 150
Checking the crawler tension (steel).............................................................................................. 151
Adjusting the crawler tension......................................................................................................... 151
Replace the drive unit oil.................................................................................................................. 152
Checking, cleaning, replacing the interior air filte r ........... ...... ....... ...... ....... ...... ....... ...... ....... ...... ..... .152
Checking the pipes and hoses of the heating and air-conditioner systems ..................................... 153
Checking the coolant content (air-conditioner only)......................................................................... 154
Viewing the operations log ............................................................................................................... 155
Checking the bolted joints..................................................................................................................... 156
Tightening torque for screws............................................................................................................ 156
Tightening torque for hose clamps................................................................................................... 156
Tightening torque for hydraulic hoses.............................................................................................. 157
Tightening torque for hydraulic pipes............................................................................................... 157
Tightening torque for hydraulic adapters.......................................................................................... 158
Tightening torque for elbow pipe joints with shim ............................................................................ 158
Recommended lubricants...................................................................................................................... 159
Excavator repairs .................................................................................................................................. 160
Safety inspection......................................................................................................................... 161
Taking out of service and storage............................................................................................. 162
Safety rules for taking out of service and storage ................................................................................. 162
Storage conditions................................................................................................................................. 162
Measures before taking out of service .................................................................................................. 162
Measures during taking out of service................................................................................................... 162
Start-up after taking out of service ........................................................................................................ 163
Lifting capacity of the excavator................................ .................. .................. ...........................164
Constructive calculation of lifting capacity............................................................................................. 164
Lifting attachment.................................................................................................................................. 164
Load suspension device........................................................................................................................ 165
Max. lifting load during swivel operation is 360°.................................................................................... 166
Accessories................................................................................................................................. 174
KUBOTA Rotary beacon ....................................................................................................................... 174
KUBOTA Pipe safety valve ................................................................................................................... 174
Note on use................................................................................................................................. 175
KUBOTA Quick coupling systems and equipments.............................................................................. 175
KUBOTA Bucket accessories................................................................................................................ 175
Replacing the bucket........................................................................................................................ 175
Remove the bucket........................................................................................................................ 176
Install the bucket............................................................................................................................ 177
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Abbreviations
Tables
% percent
° degrees
°C degree Celsius
1/min revolutions per minute
A Ampere
acc. according
API American Petroleum Inst itut e
approx. approximately
ASTM American Society for Testing and Materials
bar Bar
CECE Committee for European Construction
Equipment
CO
dB decibel
DIN Deutsches Institut für Normung
e.g. for example
EMC electromagnetic compatibility
EN European standard
GL Ground level
incl. including
carbon dioxide
2
(German Institute for Standards)
kg kilogramme
km/h kilometre per hour
kN kilonewton
kV kilovolt
kW kilowatt
Llitre
L/min litres per minute
LpA sound pressure level operator’s place
LwA measured sound power level
mmetre
m/s² metre per square second
m³ cubic metre
max. maximum
mm millimetre
MPa Megapascal
NNewton
resp. respectively
s second
tton
VVolt
ISO International Organization for Standardiza-
tion
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Tables
General symbols
Warning light
Fuel indicator
Engine oil indicator
Charge indicator
Glow indicator
Hydraulic oil
Travel speed
Low speed
Swivel boom (left)
Swivel boom (right)
Dozer up
Dozer down
Control lever direction
Control lever direction
Rotary beacon
Display selector switch
Forward travel
Backward travel
Raise boom
Lower boom
Arm crowd
Arm dump
Bucket crowd
Bucket dump
Auxiliary port enable switch
Boom working light
Cab working lights
AUTO IDLE switch
AUTO IDLE indicator
Fan
Menu button
Overload warn ing switch
Coolant temperature indicator
Service interval indica tor
Information button
Set clock indicator
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Overvoltage indicato r
Anti-theft system fault indicator
Insert key indicator
Pull out key indicator
Key registration indicator
Voltage supply indicator 5 V
Voltage supply indicator 12V
Lower control lever lock indicator
Coolant temperature sensor fault indicator
Key indicator
Wrong key indicator
Registration mode compl ete ind icato r
Registration mode indicator
No overload warning indicator
Overload warning indicator
Raise control lever lock indicator
Start engine indicator
Controller Area Network indicator
Auxiliary port indicator
Auxiliary port 2 indicator
Selection right indicator
Selection down indicator
Auxiliary port 1 indicator
Auxiliary port not present indicator
Selection up indicator
Save entry indicator
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General information
General information
Foreword
These operating i nstructions apply only for t he KUBOTA excavator models K X057-4, U48-4 and U55-4
complying with the following EC declaration of conformity (page 11).
Safety instructions, the rules and regulations for the use of excavators given in these operating instructions apply
to the excavators mentioned in this documentation.
It is the responsibility of the owner(s):
!
to ensure local, regional and national regulations are observed,
!
to observe the bodies of rules (laws, regulations, guidelines, etc) stated in the operating instructions to ensure
safe handling of the equipment,
!
to ensure that the operating instructions are always available for the operating personnel and the information,
such as notes, warnings and safety rules and regulations, are followed in all points.
The data in the operating instruction s apply for all mod els. Informati on applyin g only a certa in model or only optional equipment is highlighted e.g. (optional, KX057-4, U48-4 and U55-4).
The terms "front" and "direction of travel" refer to the view of the operator when seated on the operator’s seat. Forward direction of
travel means that the dozer is at the front when driving forwards as
shown in the figure.
Direction of travel
The symbols for operating and safety instructions are listed under "Safety symbols (page 15).
EC declaration of conformity
With the EC declaration of conformity, KUBOTA Baumaschinen GmbH certifies that the excavator
is in conformity with the valid standards and regulations at the time of marketing. The CE conformity
marking is located on the type plate and indicates compliance with the regulations.
If the excavator is modified or retrofitted without the approval of the manufacturer, the safety of the excavator may
be affected, thus invalidating the EC declaration of conformity.
The EC declaration of conformity is attached to the operating instructions for delivery of the excavator.
Keep the EC declaration of conformity in a safe place and show it, if requested, to the responsible authorities.
Should the EC declaration of conformity get lost, please contact your KUBOTA dealer.
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General information
Date of issue of the operating instructions
The date of issue of the operating instructions is printed on the bottom right of the front page of the book.
Operating personnel
The duties of personnel with respect to operation, servicing, repairs and safety inspections must be set forth clearly
by the owner.
Personnel in training are al lowed to wor k on or with the excav ator only und er the superv ision of an exp erienced
operator.
Operator
According to industrial safety regulations, only persons who were instructed in the operation of the excavator, who
have proven their qualification to the owner (employer) and who can be expected to perform their duties in a reliable way are allowed to operate the excavator independently.
Only trained and instructed personnel are allowed to work on or with the excavator.
Only instructed personnel are allowed to start the excavator and operate the controls.
Trained personnel
Trained personnel are skilled persons with a technical qualification who are able to determine damages to the excavator and perform repairs in their area of qualification (e.g. hydraulic or electrical engineering).
Skilled personnel
Based on their training and experience in their field, skilled personnel must have sufficient knowledge in excavator
engineering and be familiar with the applicable national worker’s protection regulations, safety regulations and the
generally accepted technical rules so that they can assess the safe condition of the excavator.
Location of the operating instructions
The operating instructions must always be kept on the excavator. If the operating instructions have become illegible due to continuous use, the owner (operator) must order a replacement from the manufacturer.
There is a compartment (1) for the operating instructions behind the
backrest of the operator’s seat.
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General information
Spare parts
Genuine spare parts can be ordered from KUBOTA dealers by stating the model and the serial # of the excavator.
The item numbers for the spare parts are indicated in the spare parts catalogue.
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Safety rules
Safety rules
Basic safety instructions
!
The EC machine uti liz atio n dir e ctive ( 20 09/1 04/ EC) dated 16/09/2009 app li es fo r the o per ation of the aforementioned excavator.
!
The information in these operating instructions applies for maintenance and repairs.
!
National rules and regulations apply where applicable.
Duties, liability and warranty
A basic requisite for the safe handling and problem-free operation of the excavator is the knowledge of the safety
instructions and safety regulations.
These operating instructions, in particular the safety instructions, must be followed by all persons working near or
with the excava tor. Above and bey ond this , the sa fety rules and r egulations applica ble for the site m ust als o be
observed.
Hazards occurring during the handling of the excavator:
!
The excavators are manufactured according to the state of technology and the recognized safety rules. Nevertheless, danger to the life and limbs of the operator or a third party, or damage to the excavator or to other
property can occur. The excavator(s) may only be used
! for the approved use and
! in a completely safe operating state.
Malfunctions which can reduce safety must be repaired immediately.
Warranty and liability
The scope, period and form of the warranty are set forth in the sales and delivery conditions of the manufacturer.
The operating instructions valid at the time of delivery shall be the basis for any warranty claims arising from errors
in the documentatio n, see the da te of issue o f the operat ing instruc tions (pag e 12). The followi ng applies ab ove
and beyond the sales and delivery conditions: No warranty or liability shall be assumed for personnel and property
damages resulting from one or more of the following reasons:
!
unapproved use of the excavator,
!
improper starting, operation and maintenance of the excavator,
!
operation of the excavator with defective safety devices or improperly installed or non-operational safety and
protective devices ,
!
ignorance or non-observance of these operating instructions,
!
insufficiently qualified or insufficiently instructed operating personnel,
!
improperly performed repairs,
!
unauthorised engineering changes to the excavator,
!
poor surveillance of machine parts subject to wear,
!
catastrophes caused by the effect of foreign objects or an act of God.
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Safety rules
The owner must ensure at his own responsibility that
!
the safety rules are observed (page 14),
!
unapproved use (page 16) and unauthorised operation are excluded and
!
the approved use (page 16) is ensured and the excavator is operated in accordance with the contractual conditions of use.
Safety symbols
The following terms and hazard symbols are used in these operating instructions:
Identifies important operating procedure information which may not be immediately evident to the operator.
Identifies operatin g p rocedures which must be followed exactly to pr ev en t d ama ge to the e xcav ato r
or other property.
STOP
Identifies operating procedures which must be followed exactly to prevent danger to persons.
Identifies possible hazards in the handling of batteries.
Identifies possible hazards from caustic materials (battery acid).
Identifies possible hazards from explosive materials.
Prohibits the use of fire, ignition sources, and smoking.
Prohibits the spraying of water.
Identifies operating procedures for the proper disposal and storage of ensuing waste materials.
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Safety rules
Approved use
The excavators specified in this operator’s manual may only be used for to loose the ground, excavating, picking
up, transporting and dumping soils, rocks and other materials, for work with the dozer or with a breaker. The load
may be transported largely without driving the excavator. Do not exceed the maximum lifting capacity.
Approved use also includes:
!
observation of all notes in these operating instructions,
!
regular servicing,
!
regular safety inspections.
Unapproved use
Any improper use – i.e. any deviation from the information in the "Approved use" section (page 16) of the excavator documented in t hes e oper a ting i ns tru ct ion s – is conside re d a n unapproved use. T hi s also applies to the nonobservance of the standards and guidelines listed in these operating instructions.
Hazards can occur in case of improper use. Such improper uses include:
!
using the excavator to lift loads without suitable load lifting equipment,
!
using the excavator in contaminated environments,
!
using the excavator in closed rooms without insufficient ventilation,
!
using the excavator under conditions of extreme temperatures (extreme heat or cold),
!
using the excavator for underground works,
!
using the excavator to transport persons in the bucket, and
!
using the excavator for demolition without the corresponding equipment.
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Safety rules
Special duties of the owner
Owner of the excavator in the sense of these operating instructions is any person or company which uses the excavator itself or on whose order it is used. In special cases (e.g. leasing, rental), the owner is the person who must
perform the duties arising fr om operation ac cording to the c onditions of the c ontract between owner and use r of
the excavator.
The owner must ensu re tha t the ex cav at or is onl y used pr o per ly an d tha t any danger to the life a nd he al th of the
user or others who are in the proximity of the user are eliminated. Furthermore, observance of the safety rules and
regulations as well as the operating, maintenance and repair regulations must be ensured. The owner must make
sure that all operators and users have read and understood these operating instructions.
Persons who work with or on the excavator must be provided by the operator with, and where applicable use suitable personal protective equipment (PPE), for example suitable working clothes, safety shoes, safety helmets, eye
protection, ear p rotection and air-filter ma sks. The owner/employer be ars the main responsibil ity for the PPE,
which is specified by the safety rules for particular types of activity.
Waste such as old oil, fuel, hydraulic fluid, coolant and batteries comes under the category of toxic waste and can
be a hazard to the environment, people and animals.
Disposal must b e undertak en in an appropri ate way, accordin g to leg ally presc ribed pol lution cont rol and safety
regulations.
If you have questions about the correct disposal or storage of refuse and toxic waste, contact your KUBOTA dealer
or a local waste management contractor.
Noise emission and vibration
The values specified in this manual have been identified in the test cycle at an identical machine and are valid for
a standard equipment machine. The determined values are shown in the Technical Data (page 40).
Noise emission
The noise levels were deter mined using the method of determinin g the guarant eed sound press ure level of IS O
4871 based on directive 2000/14/EC, appendix VI.
The noise levels shown are not applicable for the determination of additional workplace noise emissions. The actual noise levels may need to be determined directly at the workplaces, subject to actually existing conditions (other noise sources, special operating conditions, sound reflections).
Depending on the actual noise emissions the owner must provide the necess ary personal prote ctive equipment
to the operator (ear protection).
Noise of a noise level of more than 85 dB (A) can cause hearing damage.
STOP
From a noise level of 80 dB (A), the use of an ear protection is recommended.
From a noise level of 85 dB (A), the operator must wear an ear protection.
Vibrations
The vibrations at the machine have been determined at an identical machine.
The vibration str ess on the op erator o ver a l onger p eriod of time must b e deter mine d by the own er at the site of
application, in compliance with directive 2002/44/ EC in order to consider individual magnitudes of influence.
17
Page 18
Safety rules
Safety labels on the excavator
Keep the safety and warning symbols (labels) on the excavator clean and legible, replacing them if necessary.
The positioning of the safety symbols is illustrated in the following figures.
1)
2
2)
3
1
1) Code #: 69198-5722-0 (both sides)
Do not enter the swing area.
2) Code #: RC108-5796-0 (both sides)
Attachment point for lifting gear.
3) Code #: RB238-5736-0
Diesel fuel only, no open fire.
3)
18
Page 19
Safety rules
6
4
4)
5)
5
6 7
4) Code #: RG109-5796-0
Not an attachment point for lifting gear.
5) Code #: RD809-5725-0
Do not enter the manoeuvring area.
6) Code #: TA040-4958-0
Do not touch hot parts, such as exhaust muffler, etc.
7) Code #: RC418-5737-0
Keep away from fan and V-belt.
6)
7)
19
Page 20
9
8
8) Code #: RD809-5733-0 (both sides)
Use the attachment point only for clamping the excavator securely to a transport vehicle.
9) Code #: RD809-5795-0 (both sides)
For information about loosening the crawler, consult the operating instructions.
Safety rules
8)
9)
10
10) Code #: RD809-5714-0
Emergency exit.
10)
20
Page 21
Safety rules
11) Code #: RB419-5793-0
Risk of injury through windshield getting out of place. Always lock the windshield.
12) Code #: RD809-5743-0
Caution: Always fasten the seat belt to avoid an increased risk of injury.
13) Code #: 69198-5784-0
Attention: Read the op erating instructions and make sure that the ins tructions have been understood before starting or operating the excavator.
11
12
13
11)
12)
13)
14)
14) Code #: RD809-5739-0
When using a wider or deepe r bucket, take goo d care when sw inging or retracting the fr ont attachments to make sure that the bucket does not hit the cab.
21
Page 22
Safety rules
15
15) Code #: RA028-5724-0
Radiator: Risk of burns.
16
15)
16)
17)
16) Code #: RB238-5736-0
Diesel fuel only, no open fire.
17) Code #: RD451-5748-0
Fill level monitor when refuelling.
17
22
Page 23
Safety rules
18
17
18) Code #: RD359-5726-0
Operation of the suction pump.
(Optional KX057-4)
19
18)
19)
19) Code #: RD809-5745-0
Do not touch hot parts, such as exhaust muffler, etc.
23
Page 24
20) Code #: RD359-5747-0
KX057-4
Safety rules
20
20) Code #: RD459-5747-0
U48-4
20) Code #: RD559-5747-0
U55-4
24
Page 25
Safety rules
21) Code #: RH849-5749-0
Risk of accidents by exceeded load when lifting!
When exceeding th e nominal l oad, a beep so unds and a war ning light
illuminates.
!
Turn on overload warning func tion before starting a lifting operation!
21
25
Page 26
Safety rules
Safety devices
Before starting th e excavator, al l safety dev ices must be i nstalled prop erly and operat ional. No manip ulation of
safety devices, e.g. the shorting of limit switches, is allowed.
Protective devices may only be removed after
!
the excavator is standing still and the engine is stopped
!
and secured against restarting (starter switch in STOP position and key removed).
Locking the controls
The control levers (3 and 6), on the right and left, the drive levers (1),
the boom swing pedal (2), and the dozer control lever (5) are not operational when the cons ole (7) is raised. This circumstance al lows
safe getting on and off . T he co nsole is unlocked and raised with the
control lever lock (4).
Engine stop knob
The engine is stopped when the main key switch is turned to the
STOP position.
If the engine cannot be tu rned off, plea se operate the eng ine stop
knob switch in order to turn off the engine.
To stop the engine:
3 41 2 65
7
!
Pull the knob (1) until the engine stops.
!
After the engine has stopped, push in the knob.
26
Page 27
Safety rules
Protective structure canopy and cab
The excavator is equipped with a protective structure that protects the operator from severe injury or
death if the excavator falls over or overturns and in the case of falling objects.
Canopy and cab were constructed in accordance with current safety standards and tested for verification as:
Roll-over protection ROPS (Roll Over Protective Structure)
Protective structure against falling objects FOPS (Falling Object Protective Structure)
To ensure greatest protection by means of this protective structure, the following applies:
!
The seat belt must be fastened while the excavator is being operated.
!
Do not make any structural changes to the protective structure.
!
In the event of damage, please contact your KUBOTA dealer. (Do not repair!)
!
Never operate the excavator without the protective structure.
Use utmost care to avoid any risk of tipping, slipping, or other potential risks implied when lifting loads.
The operator must
!
drive at reduced vehicle speed,
!
avoid sudden braking,
!
avoid sudden steering movements,
!
make sure the load does not swing when travelling.
With the use of a hydraulic ham mer or another attachme nt for demolition work, wh ere material (e.g. asph alt) is
removed and can uncontrollably sputter away, a gravel guard is recommended for protection.
For demolition (according to EN 474-1, Annex G), e.g. tearing down walls, the corresponding protective equipment
is required (e.g. gravel guard).
Emergency hammer
In case of an acci dent whe re the excavat or ca b door a nd wind ows
can not be opened, the operator can brea k the wi ndow pan es with
the emergency hammer (1).
STOP
When breaking the window pane, close your eyes and
cover them with an arm.
27
Page 28
Pipe safety valve
The pipe safety valve prevents the load from suddenly lowering during lifting operation in case a pipe or hose bursts.
The pipe safety valve (1) is attached directly to the hydraulic port of
the boom cylinder, arm cylinder or dozer cylinder.
Excavators that will be used in the lifting operation, must be
equipped with at least a pipe safety valve on the boom and arm, together with an overload warning function (page 28) according
to EN 474-5.
An additional pipe safety valve in a ccordance wit h EN 474-1 must
be installed before using the dozer for lifting operation support.
To equip the excavator for the lifting operation, contact your
KUBOTA specialis t deal er.
The pipe safety valve is adjusted in the factory on the particular excavator.
Manipulating the pipe safety valve will void the warranty.
Safety rules
STOP
The manipulatio n an d repair of the pipe saf ety va lv es is f or bid den . T hey m ay only be re pla ce d by your KUBOTA
dealer as a kit.
Any manipulation can result in substantial personal injuries, even death, and is therefore strictly forbidden.
Overload warning function
An overload warning function informs the operator immediately if there is an overload. The warning system is controlled by the pr essure sw itch at the pipe safety valve. The load is meas ured by t he pressu re at th e base o f the
cylinder. Any overpressure triggers the warning device.
The warning device is a ctivated with the overload warn ing switch
(1). In the event of an overload, an acoustic signal sounds and "Exceed Rated Load" appears in the display.
An overload warning func tion is only available when the exc avator
is equipped for the lifti ng operation . To equip the ex cavator for the
lifting operation, contact your KUBOTA specialist dealer.
Excavators that will be used in the lifting operation, must be
equipped with at least a pipe safety valve on the boom and arm, together with an overload warning function according to EN 474-5.
An additional pipe safety valve in a ccordance wit h EN 474-1 must
be installed before using the dozer for lifting operation support.
When changing from rubber crawlers to steel crawlers, or from steel
crawlers to rubber crawlers, or when modyfing the length of the arm,
please contact your KUBOTA dealer.
STOP
28
The overload warning function must be enabled during any lifting operation to prevent personal injuries and damage to equipment.
Page 29
Safety rules
Hazards coming from the hydraulic system
If hydraulic oil gets into the eyes, rinse them immediately with clear water and subsequently seek medical aid.
Do not allow hydraulic oil to contact the skin or clothing. Skin parts which may have come in contact with hydraulic
oil must be washed wi th water and soap im mediately, if poss ible. Do this thoro ughly and repeated ly, otherwise
there is a risk of damage to the skin.
Immediately take off any clothes dirtied or soaked with hydraulic oil.
Persons who have inhaled hydraulic oil vapours (mist) should be taken to a doctor immediately.
If leaks have occurred in the hydraulic system, th e excavator ma y not be taken in to operatio n or, if in operati on,
operation must cease at once.
Do not use the naked hand to search for leaks; always use a piece of wood or cardboard. Protective clothing (eye
protection and gloves) must be worn when seeking leaks.
Leaking hydrauli c oil must be bound immediately with an oil binding agent. T he contaminated oi l binding agent
must be stored in suitable containers and in accordance with the valid regulations.
Fire protection
The excavator components and attachments (in particular the engine and the exhaust system) reach
STOP
!
Remove any accumulated dirt adjacent to hot components, e.g. engine, muffler, exhaust manifold/tubes, etc.
If the machine is being used to full capacity, the cleaning procedure should be performed more frequently.
!
Accumulated residues from plants and trees, or any other flammable materials, should be removed from the
machine. This must be observed in particular in the proximity of the engine and the exhaust system, but also
at the swivel frame, the track frame, and the boom.
!
Check the condition and wear of all fuel lines and hydraulic hoses. A ny defective part s should be replaced
immediately in order to avoid leakage.
!
Electric lines and connecti ons must be checked regul arly for signs of damage. Damaged com ponents and
lines must be replaced or repaired before starting up the machine. All electric connections must be kept clean
and solid.
!
Exhaust pipes and mufflers must be checked daily for leaks, damage and any loose or missing joints. Leaking
or damaged exhaust system components must be replaced or repaired before starting up the machine.
high temperatures even at no rmal working conditi ons. An electric inst allation which is dam aged or
not properly serviced may lead to flashovers and/or electric arcs. The following Fire Protection Guidelines may help you ensure the maintenance and efficiency of your equipment and minimize fire hazards.
!
Always keep a multi purpo se fire exting uish er at o r clos e to the machi ne. Mak e you rself fa mili ar wit h the op eration of the fire ext inguish er. In th e even t of fire i n the el ectric al or hy draulic syste m, use a CO
2
guisher to combat the fire.
!
For attaching a fire extinguisher (1) two threads (2) have been inserted in the cab construction on the left side
behind the driver’s seat.
fire extin-
29
Page 30
Safety rules
A fire extinguisher is not included in the ba sic equipment of the machine.
2
1
30
Page 31
Recovery, loading and transport
Recovery, loading and transport
Safety rules for recovery
!
For recovery of the exca vator, a towing vehicl e of at least the same weight class as the ex cavator must be
used.
!
A tow bar must be used for the recov ery. If a tow rope is use d, an additional v ehicle to brak e the excavato r
must also be attached. The tow bar or tow rope must be suitable for the recovery of the excavator in respect
of the towed load. Do not use damaged recovery aids.
!
Do not step into the danger zone be twee n the v ehi cles dur in g the recov ery pro cedur e. If a to w rope is us ed,
keep a distance of at least 1.5 times the length of the rope.
!
Use the towing eye on the track frame for the recovery.
!
The above safety rules also apply if the excavator is used as the towing or recovery vehicle.
!
Observe the admissible values for the towed load and the maximum pressing load vertical down on the towing
eye during recovery, see „Specifications“ (page 40).
Safety rules while loading with a crane
!
Crane and lifting gear must be suited for the absorption of the load to be lifted and be approved.
!
Before the use of the crane and the lifting gear, make sure that the specified safety inspections at regular intervals have been ca rried out and that th e crane and lifting gear are i n good work ing ord er and impe ccable
condition.
!
The excavator may on ly be li fted at the poi nts prov ided. Do not a ttach the l ifting gear to the cab roof as this
can lead to substantial damage.
!
Never attach a crane hook to the lower edge of the dozer ! The crane hook can slip off side ways while lifting
and the excavator may fall off.
!
Always adhere to the valid safety regulations for the lifting of loads.
!
The excavator must be secured with a holding rope when it is being lifted.
!
The crane operator is responsible for the observance of these safety rules.
31
Page 32
Recovery, loading and transport
Safety rules for transport
!
The ramps must have a sufficient load capacity for bearing the weight of the excavator. They must be placed
securely on the transport vehicle and fastened.
!
Support the loading area at the rear of the transport vehicle with sufficiently dimensioned supports.
!
The ramps must be wider than the track of the excavator and have footboards on the side.
!
The transport vehicle must be designed for the load of the excavator.
!
Place the left and the right ram p so th at the centre line of the transport vehic le is alig ned wi th the cen tre line
of the excavator to be loaded.
!
Do not drive the excavator onto the transport vehicle without ramps and with the boom.
!
In the transport vehicle, pull the parking brake and secure the invididual wheels of the transport vehicle at the
front and rear, respectively, with chocks.
!
Secure the excavator agains t slidin g on the transport vehicle with chock s or chains or wit h suitable tiedo wn
straps. The chocks must be secu red at the crawlers and on the transpo rt vehicle with suitable means. The
operator of the transport vehicle is responsible for the secure fastening of the excavator on the vehicle.
!
A guide is requi red for dr iving the excava tor onto a nd off the transport vehicle. T he guid e is resp onsible for
the safe loading. The excavator may only be moved on instruction of the guide; the operator and guide must
always have eye contact. If this is not possible, the operator must stop the excavator immediately.
!
When driving with an excavator loaded, always keep a clearance of 1.0 m to overhead power lines. Observe
the applicable traffic rules and regulations.
32
Page 33
Recovery, loading and transport
Recovery
STOP
!
Attach the tow bar or tow rope to the attachment point (1) on
the excavator and to the towing vehicle.
!
If the attachment point of the excavator is not accessible, a tow rope can also be fastened around the centre
of the dozer.
Adhere to the safety rules (page 14) and the safety
rules for recovery (page 31).
A recovery is only allowed over a short distance and at
walking speed (0.5 m/s ~ 1.0 m/s).
!
During the recovery procedure, the operator must be seated on the operator’s place.
!
Drive slowly with the towing vehicle to avoid abrupt loads.
Hoisting the excavator with a crane
STOP
!
Bring the excavator to the lifting posit ion (see figure) on le vel
ground.
!
Lift the dozer until the do zer cylinder s are fully retrac ted. Also
see the "Operating the con trols during excavation wo rk" section (page 80).
!
Bring the boom in line with the longitudi nal axis of the swivel
frame.
!
Completely extend the boom cylinder, arm cylinder and bucket
cylinder.
Adhere to the safety rules (page 14) and the safety
rules for hoisting the excavator with a crane (page 31).
KX057-4 < 51 1680 4280
U48-4 < 55 1250 3770
U55-4 < 57 1150 3805
α (°) l 1 (mm) l 2 (mm)
!
Swivel the swivel frame so that the dozer is located at the rear.
!
Close and lock the door and covers.
The excavator ma y only be lifted at the points pr ovided. Do not a ttach the lifting gear to any othe r
STOP
eyes or areas as this can lead to substantial damage.
33
Page 34
!
Attach the lifting g ear with shackles to the lifting eyes (1) on
each side of the dozer.
!
Attach the lifting g ear with shackles to the lifting eyes (1) on
each side of the boom.
Recovery, loading and transport
!
As soon as the lift ing gear is attac hed to the excav ator, press clot hs between lifting gear and excavator to
protect the excavator.
!
Always keep the machine level. Be sure that the centre line of the crane hook is aligned as exactly as possible
with the centre line of the excavator and that the lifting angle is as specified. Lift the excavator.
34
Page 35
Recovery, loading and transport
Transport on a flat bed trailer
STOP
!
Place the loading ramps on the transport vehicle at an angle of
rules for transport (page 32).
10° to 15°. Observe the track width. Safely attach the ramps to
the transport vehicle to make sure they cannot slide while driving upwards.
Do not turn or steer while driving up the ramps; if necessary, reverse the excavator and drive up again
Adhere to the safety rules (page 14) and the safety
STOP
!
Bring the excavato r exactly i nto line with the ram ps and d rive up s traight. Lowe r the doz er onto the loading
after realigning it.
area.
Caution! Danger!
STOP
No person is allowed to stand on the loading area during swivelling. Risk of bruising.
Take care during swivel operations. The front attachments could hit the transport vehicle. This could
damage the transport vehicle and the excavator.
!
Turn swivel frame by 180° until the front attachments face the rear of the transport vehicle.
For securing the vehicle, tie down the points as shown in the figure.
35
Page 36
!
For safe attachment, fully crowd the arm and bucket and lower
the boom until the bucket linkage touches the loading area.
!
Secure the chains and the dozer with beams (2).
!
Secure the excavator a gainst sliding on the trans port vehicle
with chocks or chains (1) (note the vehicle weight).
!
Lock the excavator after hoisting.
Recovery, loading and transport
36
Page 37
Description of the excavator
Description of the excavator
Model overview
The excavator is available in three models KX057-4, U48-4 and U55-4.
Model KX057-4, U48-4 and U55-4
37
Page 38
Description of the excavator
Dimensions
The dimensions of the models KX057-4, U48-4 and U55-4 can be found in the following illustrations including tables.
Dimensions KX057-4, U48-4 and U55-4
38
Page 39
Description of the excavator
All dimensions in mm with original KUBOTA bucket and rubber crawlers
KX057-4 A B C D E F G H I J
1* 750 550 1960 5820 4160 3890 3070 1270 4250 6260
2* 750 550 1960 5665 4005 3630 2830 1270 4235 6025
KLMNOPQR
1* 440 410 2550 1960 6130 5520 1830 2420
2* 440 410 2550 1960 5880 5505 1830 2380
U48-4 A B C D E F G H I J
3* 815 625 1960 5440 3770 3380 2670 990 4135 5850
KLMNOPQR
3* 440 410 2550 1960 5710 5330 1830 2390
U55-4 A B C D E F G H I J
4* 815 625 1960 5665 4005 3630 2830 1045 4315 6105
KLMNOPQR
4* 440 410 2550 1960 5960 5500 1830 2460
Arm version
Name Type
1* Arm 1820 mm A = 1820 mm
A
2* Arm 1570 mm A = 1570 mm
A
3* Arm 1450 mm A = 1450 mm
A
4* Arm 1570 mm A = 1570 mm
A
39
Page 40
Description of the excavator
Specifications
Following are the specifications for these series.
KUBOTA Excavator
Model name KX057-4
Type
Machine weight*
Operating weight* *
Bucket
(KUBOTA)
Engine
Volume (SAE/CECE) m³ 0.17/0.15
Width with teeth mm 680
Type
Model name KUBOTA V2607-DI-E3-BH
Displacement cm³ 2615
Rubber crawler Steel crawler
kg 5470 5570
kg 5545 5645
Water-cooled four-cylinder
Engine performance (ISO 9249) kW 33.8
Rated speed 1/min 2200
Swivel speed (swivel frame) 1/min 9.3
Travel speed
Vehicle speed
Performance
Ground pressure (without operator)
km/h
Low speed
km/h
kPa
(kgf/cm²)
31.4
(0.320)
Climbing performance % (degrees) 36 (20)
Max. lateral sway % (degrees) 27 (15)
Dozer (width x height) mm 1960 x 410
Swing angle of the
boom
Auxiliary port 1
Left degrees 70
Right degrees 55
Max. flow rate
(theoretical)
l/min 75
Max. pressure MPa (bar) 20.6 (206)
Auxiliary port 2
Max. flow rate
(theoretical)
l/min 37
Max. pressure MPa (bar) 19.1 (191)
Fuel tank capacity l 75
Pulling capacity at the towing eyes N 20500
Vertical load at the towing eyes N 2200
Noise level
LpA dB (A) 79
LwA (2000/14/EC) dB (A) 97
Digging m/s² RMS < 2.5
Hand-arm system
(ISO 5349-2:2001)
Levelling m/s ² RMS < 2.5
Driving m/s² RMS < 2.5
Idling m/s² RMS < 2.5
Digging m/s² RMS < 0.5
Whole body
Vibration***
(ISO 2631-1:1997)
Levelling m/s ² RMS < 0.5
Driving m/s² RMS < 0.5
Idling m/s² RMS < 0.5
* With standard bucket 135 kg, operating readiness established.
** Machine weight incl. operator 75 kg.
*** These values a re measured under spe cific cond itions at ma ximum engi ne speed an d can devi ate, de-
pending on the operating situatio n.
Cab
diesel engine
4.9
2.8
31.9
(0.326)
40
Page 41
Description of the excavator
KUBOTA Excavator
Model name U48-4
Type
Machine weight*
Operating weight**
Bucket
(KUBOTA)
Volume (SAE/CECE) m³ 0.14/0.12
Width with teeth mm 600
Type
Rubber crawler Steel crawler
kg 4700 4800
kg 4775 4875
Water-cooled four-cylinder die-
Model name KUBOTA V2607-DI-E3-BH
Engine
Displacement cm³ 2615
Engine performance (ISO 9249) kW 29.8
Rated speed 1/min 2200
Swivel speed (swivel frame) 1/min 9.3
Travel speed
Vehicle speed
Performance
Ground pressure (without operator)
km/h
Low speed
km/h
kPa
(kgf/cm²)
27.0
(0.275)
Climbing performance % (degrees) 36 (20)
Max. lateral sway % (degrees) 27 (15)
Dozer (width x height) mm 1960 x 410
Swing angle of the
boom
Auxiliary port 1
Left degrees 70
Right degrees 55
Max. flow rate
(theoretical)
l/min 75
Max. pressure MPa (bar) 20.6 (206)
Auxiliary port 2
Max. flow rate
(theoretical)
l/min 37
Max. pressure MPa (bar) 20.6 (206)
Fuel tank capacity l 68
Pulling capacity at the towing eyes N 20500
Vertical load at the towing eyes N 2200
Noise level
LpA dB (A) 78
LwA (2000/14/EC) dB (A) 96
Digging m/s² RMS < 2.5
Hand-arm
system
(ISO 5349-2:2001)
Levelling m/s ² RMS < 2.5
Driving m/s² RMS < 2.5
Idling m/s² RMS < 2.5
Digging m/s² RMS < 0.5
Whole body
Vibration***
(ISO 2631-1:1997)
Levelling m/s ² RMS < 0.5
Driving m/s² RMS 0.52
Idling m/s² RMS < 0.5
* With standard bucket 125 kg, operating readiness established.
** Machine weight incl. operator 75 kg.
*** These values are me asured under specif ic conditions at maximum engine speed and can deviate , de-
pending on the operating situation.
Cab
sel engine
4.9
2.8
27.6
(0.281)
41
Page 42
Description of the excavator
KUBOTA Excavator
Model name U55-4
Type
Machine weight*
Operating weight* *
Bucket
(KUBOTA)
Volume (SAE/CECE) m³ 0.16/0.13
Width with teeth mm 650
Type
Rubber crawler Steel crawler
kg 5325 5425
kg 5400 5500
Water-cooled four-cylinder
Model name KUBOTA V2607-DI-E3-BH
Engine
Displacement cm³ 2615
Engine performance (ISO 9249) kW 33.8
Rated speed 1/min 2200
Swivel speed (swivel frame) 1/min 9.3
Travel speed
Vehicle speed
Performance
Ground pressure (without operator)
km/h
Low speed
km/h
kPa
(kgf/cm²)
30.5
(0.311)
Climbing performance % (degrees) 36 (20)
Max. lateral sway % (degrees) 27 (15)
Dozer (width x height) mm 1960 x 410
Swing angle of the
boom
Auxiliary port 1
Left degrees 70
Right degrees 55
Max. flow rate
(theoretical)
l/min 75
Max. pressure MPa (bar) 20.6 (206)
Auxiliary port 2
Max. flow rate
(theoretical)
l/min 37
Max. pressure MPa (bar) 19.1 (191)
Fuel tank capacity l 68
Pulling capacity at the towing eyes N 20500
Vertical load at the towing eyes N 2200
Noise level
LpA dB (A) 78
LwA (2000/14/EC) dB (A) 96
Digging m/s² RMS < 2.5
Hand-arm system
(ISO 5349-2:2001)
Levelling m/s ² RMS < 2. 5
Driving m/s² RMS < 2.5
Idling m/s² RMS < 2.5
Digging m/s² RMS < 0.5
Whole body
Vibration***
(ISO 2631-1:1997)
Levelling m/s ² RMS < 0. 5
Driving m/s² RMS < 0.5
Idling m/s² RMS < 0.5
* With standard bucket 130 kg, operating readiness established.
** Machine weight incl. operator 75 kg.
*** These values a re measured under spe cific cond itions at ma ximum engi ne speed an d can devi ate, de-
pending on the operating situatio n.
Cab
diesel engine
4.9
2.8
31.1
(0.317)
42
Page 43
Description of the excavator
Identification of the excavator
The type plate of the exc avator is locat ed at the front o f the swivel
frame. The owner should enter the stamped data in the field on the
back of the front cover.
1. CE marking
2. Serial #
3. Max. pulling capacity at the towing eyes
4. Max. vertical load at the towing eyes
5. Product ID number PIN
6. Year of construction
7. Engine performance
8. Operating weight
9. Model name
10. Manufacturer
11. Representative
Serial # of the machine
The machine serial # (1) is stamped on at the track frame in the area
of the swing bracket.
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Page 44
Description of the excavator
Engine number
The engine number (1) is affixed to the engine block.
Equipment
The standard equipment of the excavator can be enhanced by optional equipment (accessories).
Standard equipment
This model has the following standard equipment:
!
Operating inst ructions with protective cover
!
Spare parts catalogue
!
Filter wrench
!
Grease gun
!
Spare fuses (50 A, 80 A)
!
Guarantee
Stow the filter wrench and other tools in the tool compartment (page 52).
The spare parts catalo gue, guarantee and spare fuses can be stowed together with the operating in structions
(page 12).
Stow the grease gun (1) behind the right cover next to the hydraulic
system.
44
Page 45
Assembly and functions
1. Swivel frame
13. Boom cyli nd er
Assembly and functions
Component overview
18
17
19
20
21
22
16
15
14
13
12
23
3
4
1
5
6
2
10. Dozer
11. Dozer cylinder
12. Swing block
2. Track frame
3. Rear view mirror
4. Operator’s place
5. Cab door
6. tank filler neck
7. Drive sprocket
8. Crawler
9. Idler
11
9 8 710
14. Bucket
15. Bucket linkage
16. Auxiliary port connectors
17. Bucket cylinder
18. Arm
19. Arm cylinder
20. Boom
21. Working lig ht (bo om)
22. Working lig hts (cab)
23. Cab
45
Page 46
Operator’s place
The operator’s pl ace i s lo ca ted in th e middle of the c ab. It in cl ude s
the following control elements:
1. Left control console
2. Drive levers and control pedals
3. Right control console
4. Operator’s seat
Left control console
The left control console includes the following components:
1. Control lever lock
2. Rocker switch for the auxiliary port 2
3. Wrist rest
4. Left control lever
Assembly and functions
Description of the components of the left control console
1. Control lever lock
To enter and leave the cab , the co nsole must b e rai sed by pull ing up t he cont rol l ever lo ck. T he eng ine ca n
only be started if t he console is ra ised. The con trol levers, the drive levers , the boom swin g pedal, and th e
dozer control lever are only operational when the console is lowered and the control lever lock is in the "down"
position.
2. Rocker switch for the auxiliary port 2
The rocker switc h for auxiliary port 2 controls the oil flow to aux iliary port 2. When the left rocker switch is
activated the oil flows to th e conne ctor o n the left o f the arm. Ac tivat ing the rig ht rocke r switch result s in the
oil flowing to the right. Auxiliary port 2 can be controlled proportionally (stageless).
3. Wrist rest
The wrist rest allows fatigue-free operation of the control lever.
46
Page 47
Assembly and functions
4. Left control lever
The left control lever is used to move the swivel frame and the
arm.
The figure, in conjunc tion with the following table, shows the
functions of the left control lever.
Position of control lever Movement
1Arm crowd
2 Arm dump
3 Swivel frame to the left
4 Swivel frame to the right
Drive levers and control pedals
Drive levers and control pedals include the following components:
1. Left and right drive levers
2. Boom swing pedal
3. Pedals for the left and right crawler
Drive levers and control pedals – description
1. Left and right drive levers
With the drive levers the excavator can be driven forwards and backwards and also turned. The left drive lever
controls the left track and the right drive lever controls the right track.
2. Boom swing pedal
This pedal is used to swing the boom right and left.
3. Pedals for the left and right crawler
The pedals allow the operator to foot-control the drive levers.
47
Page 48
Right control console
The right-hand control console contains the following components:
1. Rocker switch for the auxiliary port 1
2. One way hold switch
3. Travel speed button
4. Dozer control lever
5. Starter switch
6. Potentiometer for the adjustment of the engine speed
7. Heating and air-conditioner control (optional)
8. Wiper/washer switch
9. Engine stop knob
10. AUTO IDLE switch
11. Rotary beacon button
12. Working light button (cab)
13. Working light button (boom)
14. Wrist rest
15. Right control lever
16. Horn switch
17. Display and control unit
Assembly and functions
The display and control unit contains the following displays, switches, and indicators:
1. Menu button
2. Overload warning switch
3. Auxiliary port enable switch
4. Information button
5. Display selector switch
6. Display
7. Warning light
8. Engine oil pressure indicator
9. Charge indicator
10. Travel speed indicator
Description of the components of the right control console
1. Rocker switch for the auxiliary port 1
The rocker switc h for auxiliary port 1 controls the oil flow to aux iliary port 1. When the left rocker switch is
activated the oil flows to th e conne ctor o n the left o f the arm. Ac tivat ing the rig ht rocke r switch result s in the
oil flowing to the right. Auxiliary port 1 can be controlled proportionally (stageless).
2. One way hold switch
Operating the one way hold switch results in a continuous oil flow to the auxiliary port connector to the left of
the arm. When you operate it again, the oil flow discontinues. Thus, you can operate, for example, a breaker
without having to continuously hold down the button.
3. Travel speed button
The travel speed button switches the travel speed mode on and off.
4. Dozer control lever
The dozer contr ol lever i s used to raise or lower the dozer. Pus hing the lev er forwa rd lowers the dozer an d
pulling it back raises it.
48
Page 49
Assembly and functions
5. Starter swit ch
The starter switch serves as the master switch for the entire machine and as switch for pre-glowing and starting the engine.
6. Potentiometer for the adjustment of the engine speed
The operator can use this potentiometer to set the engine RPM to any desired speed.
7. Heating and air-conditioner control (optional)
Operate the heater and the air-conditioner using the heating and air-conditioner control (optional).
8. Wiper/washer switch
The wiper/washer switch switches on the wiper for the front window and/or the washer system.
9. Engine stop knob
Using this device, the operator can switch off the engine manually.
10. AUTO IDLE switch
Using the switch you can swi tch the AUTO IDLE c ontrol on or off. The AUTO IDLE contro l makes sure that
the engine speed pr e-selected with the pote ntiometer drops down to idle speed after appr ox. 4 seconds -
provided that no c ontrol i s be ing used . I mmedia tely upon a ctivati ng a con trol, the en gine s peed will be immediately set to the pr e-selected spe ed. When the AUT O IDLE control is activated the in dicator inside the
switch lights up.
11. Rotary beacon button
The rotary beacon (accessory) is switched on with this button.
12. Working light button (cab)
Switches the working lights in the cab on and off.
13. Working light button (boom)
Switches the boom working light on and off.
14. Wrist rest
The wrist rest allows fatigue-free operation of the control lever.
15. Right control lever
The right control lever is used to move the boom and the bucket.
The figure, in conjunc tion with the following table, shows the
functions of the right control lever.
Position of control lever Movement
1 Lower boom
2 Raise boom
3Bucket crowd
4 Bucket dump
16. Horn switch
Depressing the horn switch activates the horn.
17. Display and control unit
The functions of the display and control unit are described in the "Display and control unit - description" section
(page 50).
49
Page 50
Assembly and functions
Display and control unit - description
The display and control unit’s switches are multifunctional and are also used to navigate the display
menu. You will find detailed descriptions of the individual functions in the respective chapters.
1. Menu button
The menu button activates the navigation function for the display menu.
2. Overload warning switch
The overload warning switch activates the overload warning function.
3. Auxiliary port enable switch
The auxiliary port enable switch activates the auxiliary port function.
4. Information button
The information button enables you to view additional system information in the display.
5. Display selector switch
The display selector switch changes what is shown in the display.
6. Display
The display shows operating states, warning and indicator symbols as well as system information.
7. Warning light
The warning light fla shes red when a sy s tem fa ult or te ch ni ca l ma lfun ct ion occurs. The warning li ght fl ashes
yellow when the system issues a warning.
STOP
8. Engine oil pressure indicator
The engine oil pressure indicator lights up when the oil pressure is below the reference value.
9. Charge indicator
The charge indicator lights up when the charging circuit voltage is too low.
10. Travel speed indicator
The travel speed indicator lights up when the travel speed mode is activated.
Operations must cease immediately when the warning light flashes red.
50
Page 51
Assembly and functions
Other equipment to be found at the machine
Other equipment located at and around the machine is described below.
Wiper/washer system
The front window is provided with a wiper/washer system. The system is operated with the wiper/washer switch (1).
1
Interior lighting
An interior light (1) is located on the le ft side of the cab roof. It is
turned on and off with the switch (2).
Fuse box
The fuse box (1) is located below the operator’s seat behind a cover.
1
2
1
51
Page 52
Tool compartment (KX057-4)
Assembly and functions
The tool compartment (1) is located on the right-hand side of the vehicle before the side cover.
Tool compartment (U48-4 and U55-4)
The tool compartment (1) is located on the right-hand side of the vehicle under the side cover.
1
Main battery
The main battery (1) is located on the right side of the vehicle under
the side cover.
1
1
52
Page 53
Assembly and functions
Battery cut-off switch
The battery cut-off switch (1) can be used to cut off the main power
circuit. The battery c ut-off switch is on the right vehicle side under
the side cover.
Cup holder
There is a cup holder (1) in the right control console.
1
Tank filler neck and fill level monitor
The tank filler neck (1) is located at rear left-hand side (not if optional suction pump is equipped, page 54) and it closed with a lockable
filler cap (2).
The fill level monitor (3) is locate d above of the tank fil ler neck and
it indicates the fuel level when refuelling.
1
3
2
1
53
Page 54
Assembly and functions
Tank filler neck and fill level monitor with suction pump (optional only KX057-4)
The excavator can be equipped with an optional suction pump (2).
With this equipm ent, the suction pump, t he tank filler n eck (3) a nd
the fill level monitor (1) are locate d below the left ser vice cover (4)
(only if equipped with optional suction pump).
Rear view mirror
The rear view mirror (1) allows visibility down towards the rear of the
excavator. The front rear view mirrors (2) allows visibility to the rear.
The rear view mirro rs can be adjuste d for optimum visi bility of the
respective areas.
4
1 2
3
1
2
Heating and air-conditioning system (optional)
The heating controls are on the right control console. The control
panel includes the following components:
1. Temperature control
2. Blower switch
3. Air-conditioner switch (optional)
4. Indicator (optional)
Using the air-conditioner switch, you can switch on the air-conditioner when the starter switch is in the RUN position and the fan is switched on. Operation of the air-conditioner system (optional) is indicated by the indicator.
Using the temperature control, you can set the air temperature to the desired value.
Using the blower switch, you can control the air flow in three stages, with stage 3 having the maximum air flow.
1 2
34
54
Page 55
Assembly and functions
The air is drawn in through the cabin filter (1) as fresh air via the air
intake to the right of the cabin (3) or as recirculated air in the cabin.
With the lever (21) the air intake can be s witche d betw een recir culated air (A) and fresh air (B).
A
2
1
B
To make sure the air gets suck ed in properly from the cab, do no t obstruct the interior air filte r with
objects (such as bags or clothes).
The air is conduc ted via th e heat e xchanger and/o r the evapora tor
of the air-conditioner assembly (optional) to the air nozzles.
A ! Windshield
B ! Operator
C ! Leg room
D ! Side window
E ! Rear window
3
55
Page 56
Assembly and functions
1. Air filter
2
3
4
5
6
7
8. Oil dipstick
Engine compartment
The engine compart ment (figure bel ow) is positi oned at the rea r of the swivel frame; it is co vered by a loc kable
hinged cover.
1
2
3 4 5
. Fuel injection pump
. Filter indicator
. Engine
. Coolant expansion reservoir
. Alternator
. Oil filter
67891011121314
9. Oil filler opening
10. Starter
11. Fuel filter
12. Fuel pump
13. Water separator
14. Muffler
56
Page 57
Assembly and functions
Hydraulic system
All controls enable the functions via a hydraulic oil pilot control circuit.
The accumulator allows the boom and the arm to be lowered in case of an engine failure.
The hydraulic oil tank contains the suction filter and the return filter.
Using the return ch ange val ve for the auxili ary port you can ac tivate a direct retu rn flow to the hydr aulic oil tank
while auxiliary port 1 is in operation. The direct return flow enables you to use one way hydraulic attachments.
1. Plug
2. Return change valve for direct return flow
3. Control valve
4. Hydraulic oil tank
5. Sight glass for hydraulic oil level
6. Pilot circuit filter
6
1 2
45
Radiator and condenser
The radiator and condenser for the cooling circuits and the air-conditioner system are under the right side cover.
1. Coolant radiator
2. Fuel cooler
3. Hy draulic oil radiator
4. Condenser (air-conditioner)
5. Liquid reservoir and dryer (air-conditioner)
1 2 3 4
3
5
57
Page 58
Operation
Operation
Safety rules for operation
!
The safety instructions (page 14) must be followed.
!
The excavator may only be operated according to its approved use (page 16).
!
The excavator may only be operated by trained personnel (page 12).
!
Do not operate the excavator when under the influence of drugs, medication or alcohol. Stop operation when
getting tired. The operator must be physically capable of operating the excavator safely.
!
The excavator should only be operated if all protective devices are fully operational.
!
Before starting or working with the excavator, make sure that there is no danger for any person nearby.
!
Before starting the excavator, it must be checked for external damage and operability, and the pre-start
checks must be car ried out. If defects are detected, the excava tor shou ld only be t aken into operation a fter
the defects have been repaired.
!
Wear tightly fitting working clothes in accordance with the trade association regulations.
!
During the operation of the e xcavator, nobody excep t the operat or is allowed to be inside the ca b or get on
the excavator.
!
For getting on and off, the swivel frame should be positioned in an angle which allows the operator to use the
crawler or the step (if applicable) to enter the cab.
!
Always stop the engine when leaving the cab. In exceptional cases, e.g. for troubleshooting, the cab can also
be left wi th the eng ine runni ng. The operator must make su re that t he left c ontrol co nsole re mains in a n upright
position. The controls may only be used while the operator is sitting on the operator’s seat.
!
During operation, it is forbidden to stretch any part of the body out of the window or cab door, such as arms,
legs, or the body.
!
If the operator leaves the e xcavato r (e.g. for breaks or at the end of wo rk), the e ngine m ust be s topped an d
the excavator must be secured against restarting by removing the key. The cab door must be locked. Before
leaving the excavator, park the machine so that it can not move.
!
Whenever work is interrupted, the bucket must always be lowered to the ground.
!
Do not allow the engine to run indoors, unless the room is equipped with an exhaust gas extraction system
or otherwise well ventilated. The exhaust gas contains carbon monoxide, a colourless, odourless, and lethal
gas.
!
Never crawl under the ex cavator b efore the engine is stopped, the k ey is removed and the excavator is secured against moving.
!
Never crawl under the excavator if it is only raised with the bucket or the dozer. Always use suitable supports.
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Page 59
Operation
Safety for children
Children are normally attracted to machines and their normal operation. If children are in the vicinity
STOP
Always observe the following rules of conduct:
!
Never assume that children will remain where you last saw them.
!
Keep children far away from the working area and always under the supervision of other responsible adults.
!
Be vigilant and switch the machine off when children enter the working area.
!
Never let children drive wi th you on you r mach ine, the re is no sa fe place for passeng ers. Ch ildren c ould fall
off the machine and be run over or affect the control of the machine.
!
Children must never operate the machine, even under supervision of an adult.
!
Never let children play on the machine or attachments.
!
Be particularly careful when manoeuvring. Look behind and down below on the machine and ensure that there
are no children in the manoeuvring area.
of the machine a nd are not at a sui table dista nce and in the fi eld of v ision of th e operato r, this can
lead to serious accidents or even death of the children.
!
Before leaving the mach ine, park it so that it canno t move. When l eaving the ma chine (e. g. for breaks or at
the end of work), stop the engine, remove the key and close the cab door, if present.
Guiding the operator
!
If the operator’s working and driving area is obscured, the operator must be supported by a guide.
!
The guide must be capable of performing this kind of work.
!
Before starting work, the guide and the operator must agree the necessary signals.
!
The guide’s position must be clearly visible by the operator.
!
The operator must stop the excavator immediately if the eye contact to the guide is interrupted.
! As a rule, either the excavator or the guide may move, never both at once!
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Page 60
Operation
Working in the vicinity of overhead power lines
When working with the exc avator in the vi cinity of overhe ad power lines and tram l ines, a minimum distance as
specified in the following table must be maintained between the excavator and its attachments and the power line.
Rated voltage [V] Safe distance [m]
up to 1 kV 1.0 m
over 1 kV up to 110 kV 3.0 m
over 110 kV up to 220 kV 4.0 m
over 220 kV up to 380 kV or when rated voltage is unknown 5.0 m
If safe distances can n ot be mai ntained, the p ower l ines m ust be sw itched off i n coordi nation with thei r owner or
provider and secured against making them live again.
When approaching overhead power lines, any possible movements of the excavator must be taken into consideration.
Unevenness of the ground or sloping the excavator can reduce the safe distance.
Wind can cause the overhead power lines to sway, thus reducing the safe distance.
In case of a power cross-over, leave the danger zone with the excavator, if possible, by taking suitable measures.
If this is not poss ible, do no t leave the ope rator’s place, warn any appr oachi ng pe rsons of the d anger, an d h ave
the power switched off.
Working in the vicinity of underground power lines
Before starting with excavation work, the owner of the excavator or the person responsible for the work must check
if there are any underground power lines in the proposed working area.
If there are underground power lines present, the po sitio n and routing of the pow er lines mus t be deter mined together with the owners or operators and the required safety measures must be determined.
If power lines are enco unte re d or a cc identa ll y damaged, the operator mu st sto p wo rki ng i mme di ately and inf or m
the responsible person.
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Page 61
Operation
Initial operation
Before initial o perat ion, the excavat or mu st first be ch ecke d visua lly for ex ternal tr ansi t dam ages and c heck ed if
the shipped equipment is complete as ordered.
!
Check fluid levels as described in the "Maintenance" section (page 126).
!
For a description of all operation features refer to the "Operating the excavator" section (page 64) as well as
the following sections.
If defects are detected, please inform your dealer immediately.
Setting the display language
Messages in the display can be shown in 11 languages.
!
Turn the starter switch to the RUN position.
!
Press button 1.
The user menu appears in the display.
!
Press button 2 or 3 until "Language Selection" is selected in the
display.
!
Press button 5 to confirm.
The list of available languages appears in the display.
!
Press button 2 or 3 until the desired language is selected.
!
Press button 5 to confirm.
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Page 62
Setting the time
!
Turn the starter switch to the RUN position.
!
Press button 1.
The user menu appears in the display.
!
Press button 2 or 3 until "Clock Set" is selected in the display.
!
Press button 5 to confirm.
Date and time appear in the display.
Press button 4 to switch between the units of time: year, month, day,
hours and minutes.
!
Press button 4 until the desired unit of time is selected.
Operation
!
Press button 2 to decrease the numerical value.
!
Press button 3 to increase the numerical value.
!
Press button 5 to confirm.
Press and hold b utton 2 or 3 down t o change the n umerical value fast.
!
To complete setting the clock and save your values, press button 5 again.
The message "Clock Set" appears in the display.
Input can be canc el le d a t a ny ti me. Ch ange s are then
not saved.
!
To cancel your input, press button 1.
The display returns to its previous display mode.
62
Page 63
Operation
Date and time display format
Time can be displayed in the 12- or 24-hour format, while the date format can be changed to day, month, year.
!
Turn the starter switch to the RUN position.
!
Press button 1.
The user menu appears in the display.
!
Press button 2 or 3 until "Various Setting s" is selected in the
display.
!
Press button 5 to confirm.
!
Press button 2 or 3 until "Date/Clock Set" is selected in the display.
!
Press button 5 to confirm.
Date and time appear in the display.
!
Press button 2 or 3 to switch between the display formats of the
date (area A).
!
Press button 5 to confirm.
Press button 4 to switch between the display formats of the time.
!
Press button 2 or 3 to switch between the display formats of the
time (area B).
!
Press button 5 to confirm.
Input can be cancelled at any time. Changes are then not saved.
!
To cancel your input, press button 1.
The display returns to its previous display mode.
63
Page 64
Operation
Running-in of the excavator
During the first 50 hours of operation, the following points should be adhered to in all cases:
!
Warm up the excavator at an average engine speed and with a low load; do not let it warm up at idling position.
!
Do not overload the excavator.
Special maintenance instructions
!
Change the oil in the final drives after the first 50 service hours.
Operating the excavator
For a safe excavator operation, see the following sections.
Pre-operational services
For the performance of the services, the excavator must be parked on level ground and the key must
be removed.
!
Open the side cover (page 113). Always close the side cover after the work is done.
!
Open the engine compartment cover (page 112).
Walk-around inspection
!
Check the excavator for visible damage, loose nuts and screws and leaks.
!
Check the pipe safety valves. Do not carry out any excavating work if a pipe safety valve is damaged.
Checking the engine oil level
!
Pull out the oil dipstick (1) and wipe it with a clean cloth.
!
Insert the oil dipstic k completely and pull it out agai n. The oil
level should be in the "A" area. If the oil level is too low, add engine oil (page 136).
When the oil level is too high or too low, the engine
might get damaged during operation.
64
Page 65
Operation
Checking the coolant level
!
Check the coolant level in the expansion reservoir (1). The fluid
level must be between FULL and LOW.
STOP
Do not open the radiator cap.
If the coolant level is below the LOW m ark, refill coolant (page 131).
If the coolant level is below the LOW mark a sh ort time afte r adding cool ant, the coolin g system is
leaky. The excavator may only be started again after the fault is repaired.
1
Checking the radiators and the condenser
!
Make a visual inspection of the coolant radiator (1), fuel cooler
(2), hydraulic oil cooler (3) and condenser (4) for leaks and accumulation of dirt and debris.
!
If there is mud or debris at the radiators or the condenser, clean the radiators and condenser (page 132).
1 2 3 4
65
Page 66
Checking the V-belts
STOP
!
Press in the V-belt (1) at position "A"; the belt must give way for
7 to 9 mm (at a pressure of 6 to 7 kg). Adjust the V-belts if necessary (page 133).
!
Press in the V-belt (2) at position "B"; the belt must give way for
12 to 15 mm (pressure of 7 kg). Adjust the V-belts if necessary
(page 133).
!
Check both V-belts for wea r and tear. Replace the V-belts if
necessary (page133).
The engine must be switched off and the key removed!
Do not attempt to grasp rotating or moving parts.
Operation
Checking the exhaust system for leaks
!
Check the exhaust system for leaks and security (formation of cracks).
STOP
!
If the exhaust sy stem is l eak y or l oo se, th e e xcav ato r ma y onl y be tak en i nto ope ra tio n a fter t he defects are
eliminated.
If the inspection is carried out when the engine is warm, there is a risk of burns at the exhaust system.
66
Page 67
Operation
Checking the oil level of the hydraulic system
Operate the boom, arm, bucket and boom swing
mechanism so that all hydraulic cylinders are extended
half way. Lower the dozer onto the ground.
See the "Placing out of operation" section (page 97).
Check the oil leve l in the sight glas s (1). Th e oil le vel sh ould be half
way up the sight glass. Carefully check the position of the hydraulic
cylinders before topping up the oil. For more information see the
"Topping up/changing the hydraulic oil" section (page 144).
1
Greasing the bucket bolts and bucket linkage bolts
!
Start th e engine (page 71).
!
Position the arm a nd bucket as shown in th e figure. See the
"Operating the controls during excavation work" section
(page 80).
!
Stop the engine (page 72).
!
Lubricate all greasing poi nts (see figure to the right) – see the
"Recommended lubr icants" section (page 159) – by injecting
grease until fresh grease emerges.
Wipe emerged grease off im mediately and store dirt y
cleaning cloths in the containers provided for disposal.
67
Page 68
Checking the electric cables and connections
!
Check all accessible electric cables, connectors and connections for condition and security.
!
Repair or replace damaged parts.
!
Check the fuse box and fuse holders for oxidation and dirt, clean if necessary.
Checking fuel level, coolant temperature and time
The following function can be carried out when the key
is not in the starter switch.
!
Press the menu button (button 1) or the display selector switch
(button 5).
The display shows the fuel level (1), the time (3) and the coolant
temperature (2) for approx. 10 seconds.
Operation
Setting up the workplace
Please refer to the "Opening and closing the cab door" section (page 101).
Getting on the excavator
!
Move the left control console (2) up as far as possible by pulling
the control lever lock (1) up.
The control conso le must remain in this position until
the engine is started, as the engine can only be started
in this position.
!
Get on the excavator by using the crawler or step as a stepping
aid.
!
Sit down on the operator’s seat.
1 2
68
Page 69
Operation
Adjusting the operator’s seat
Adjust the operator’s seat so that fatigue-free and comfortable working is possible. It should be possible to operate all controls safely.
Horizontal seat adjustment (seat stand-off)
!
Pull the horizon tal seat a djustmen t lever (4 ) up and move the
seat to the desire d posi tion by moving it f orward o r bac k, then
release the lever.
1
2
STOP
Check that the seat is locked into place.
4 3
Seat height adjustment (knee height)
The seat height can be adjusted to three sto p positions. To adjus t 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.
Adjust the seat he ight in relati on to its hor izontal posi tion so that t he foot cont rols can be operated
safely.
!
To raise: Raise the seat to the desired position and engage it.
!
To lower: Raise the seat to the highest position, lower it fully and engage it.
STOP
Make sure that the seat adjuster is engaged.
Spring adjustment (operator’s weight)
!
The seat can be set to the weight of the operator with the rotary knob (figure above, position 3).
!
Turning the grip clockwise increases spring tension (heavier operator), turning the grip anticlockwise reduces
spring tension (lighter operator).
!
Adjust the seat so that a comfortable cushioning is achieved.
Backrest adjustment
!
Take the load off the backrest and pull the backrest adjustment lever (figure above, position 2). Set the backrest to the desired sitting position and release the lever. The backrest should be adjusted so that the operator
can safely operate the control levers with the back resting completely on the backrest.
69
Page 70
Seat belt
!
Buckle up (figure above/1).
!
Check that the seat belt is fastened tightly .
Operation
STOP
Do not operate the excavator without the seat belt fastened.
Rear view mirrors adjustment
!
Check the adjustme nt o f th e r ea r vi ew m irr ors. If n ec es sary , a dj ust the mi r rors until the optimum s igh t is ensured.
Safety instructions for starting the engine
The excavator is equipped with an anti-theft system (page 115).
When starting the e xcavator for th e first time on a work day, c arry out the p re-operational services
(page 64).
STOP
STOP
Make sure that there are no persons within the excavator’s working area. It is essential to warn persons in the vicinity of the excavator by briefly honking the horn.
Make sure that all operational controls are in the neutral position.
STOP
Starting the excavator is only allowed when the operator is sitting on the operator’s seat.
Before starting the engine, make the necessary operator station adjustments (page 68).
If the engine does not start immediately, cease the starting procedure. Wait a short time before reattempting a start. If the en gine does no t start after severa l attempts, c ontact skille d personn el. If the
battery is discharged, jump-sta rt the excav at or (page 105).
Do not use Start Pilot or similar substances as a starting aid.
70
Page 71
Operation
Starting the engine
!
Place the potentiometer (1) to the centre position between
and . The AUTO IDLE switch (2) is switched off. The
indicator does not light up.
!
Insert the key into t he starte r switc h (3) an d turn it to t he RUN
position.
The excavator is equipped with an anti-theft system. If
someone tries to start the excavator with the wrong
key, the display me ssage as i n the figure on th e right
appears.
1
2
3
If the bunch of keys contains metal parts, such as ke y
rings or other keys, the engine might fail to start.
If the control lever lock is not raised, the display message as in the
figure on the right appears.
The preglowing indicator (1) lights up for a short period of time. The
engine can be started after it goes off.
The engine oil pres su re in dic ato r (3 ) li ghts up , then goes out again
after the engine has started.
The charge indicator (2) lights up, then goes out again after the engine has started.
If the indicators do not light up when the starter switch is in the RUN
position, remove the key and contact suitably qualified personnel.
If the message "Feed Fuel" appears in the display and the warning
light (1) flashes yellow, there is very little fuel left in the tank. Refuel
the excavator (page 107).
71
Page 72
Operation
!
Turn the starter switch to the START position and hold it there until the engine has started. Release the starter
switch.
!
Lower the left control console and make sure that the control lever lock engages.
!
Let the engine run at middle speed until the operating temperature has been reached.
After the engine has reached its operating temperature, set the engine speed required for operation:
!
Move the potentiometer towards or un til the engine reaches the requi red speed. Then s witch on
the AUTO IDLE control. The AUTO IDLE control makes sure that the pre-selected engine speed drops down
to idle speed after approx. 4 seconds – provided that no control lever is being used.
Using the display selector switch (button 5) you can switch between
numeric and graphic displays of the engine speed and the hours of
operation.
Both the numeric (1) and the graphic (2) displays of the engine
speed show the engine’s current number of revolutions per minute.
The time meter (3) shows the actual hours of operation of the excavator (independent from the engine speed).
When the hydraulic oil is col d (i.e. in col d-w eat her con dit ion s) , the A UTO IDLE con tr ol ma y ex perience problems
during the warm-up phase. This does not constitute a defect.
Check the displays and indicators during operation (page 73).
Stopping the engine
If the engine is to be stopped to take the excavator out of operation, the services for placing the excavator out of operation (page 97) must be carried out.
!
Turn the starter switch to the STOP position and remove the key.
72
Page 73
Operation
Observation of the displays after starting and during operation
The operator must observe the display indicators and displays after starting and during operation.
If the engine oil pressure becomes too low during operation, the engine must be stoppe d im med iat ely . The engine oil pressu re ind ic ator (2) lights up, th e warning light (1) flashes red a nd the display
message as in the figure on the right appears.
The warning light (1) flashes red when a system fau lt
or technical malfuncti on occurs. Stop the engine immediately! The warning light flashes yellow when the
system issues a warning . In additi on to the mess ages
that appear in the display, you will also hear an acoustic warning signal.
Clear the messages by tak ing appropriate steps, s ee
"Troubleshooting: Display indications" (page 121), or
contact qualified personnel if necessary.
If a fault occurs in the charging system during operation, the engine
must be stopped immediately. The charge indicator (2) lights up, the
warning light (1) fla sh es re d an d th e di sp la y message as in the fi gure on the right appears.
When the machine is being operated at or close to full capacity, the
temperature of the co olant c an rise a littl e higher t han nor mal. The
display message as in the figure on the right appears.
The message disappears shortly, but the coolant temperature
gauge flashes as long as the temperature is higher than normal.
Operate the machin e only with reduced loads until the operat ing
temperature is normal again.
73
Page 74
Operation
If the coolant temperature is too high, cool down the engine by
changing into idle. The display message as in the figure on the right
appears.
Allow the machine to idle for five minutes before
switching off the engine!
!
Check the level of the coolant in the expansion tank.
!
STOP
!
If the water level is below the "LOW" mark, let the engine cool completely and add coolant (page 131).
!
Check the cooling system for leaks; if necessary, contact skilled personnel.
!
Check if the V-belt is very loose or broken; if necessary, contact skilled personnel.
!
Check if the air intake in the right side panel, the radiator, and the condenser are very dirty. If necessary, clean
Do not open the radiator cap
the radiator (page 132).
risk of scalding.
!
Watch the fuel gauge (1).
The bar indicates the amoun t of fuel remaining in the
tank. The bar slow ly becomes shorte r as fuel is u sed
up during operation.
When the fuel tank is full, the bar is at the top, and in addition, the
display (2) is lit up.
When the fuel tank is empty, the bar is at the bottom, and in addition, the display (3) is lit up.
When the fuel tan k is empty, the machine cann ot be
operated. The machin e must be refuelle d and the fue l
system bled.
If the message "Feed Fuel" appears in the display and the warning
light (1) flashes yellow, there is very little fuel left in the tank. Refuel
the excavator (page 107).
The message disappear s shortly, but the warning light flashes as
long as the cause persists.
Press the information bu tton (button 4) if you want to
display the message for a current warning again.
74
Page 75
Operation
Also stop the engine immediately if
!
the engine speed rises or drops suddenly,
!
abnormal noises are heard,
!
the excavating devices do not respond to the control lever as expected or
!
the exhaust fumes are black or white. When the engine is still cold, white smoke for a short time is normal.
Driving the excavator
!
Adhere to the general safety rules (page 14) and the safety rules for operation (page 58).
!
Carry out the pre-operational services (page 64).
!
Start th e engine (page 71).
!
Observe the displays and ind icato rs (pa ge 73).
Ensure that the boom and the dozer are in the direction
of travel as shown in the figure.
STOP
following saf ety instructions.
When working on slope s, obs erve the t ilt of th e excav ator (se e figure).
Max. lateral sway ! 27 % resp. 15°
Climbing performance ! 36 % resp. 20°
When driving with the exca vator, always observe the
!
Keep the bucket as low as possible when driving.
!
Check the ground for stabi lity, and verify if there are holes or
other potential obstacles.
Direction of travel
75
Page 76
!
Approach overhangs and edges of ditches carefully as they
could cave in.
!
Drive slowly downhill, do not allow the vehicle speed to increase uncontrollably.
!
Close the cab door.
!
When driving, the bucket should be approx. 200 to 400 mm (A)
over the ground (see figure).
!
Raise the dozer to the top position.
!
Select an appropriate engine speed.
Driving
Operation
!
Push both drive leve rs forwa rd simul taneou sly to drive the e xcav ator str aight ah ead. Rele asin g the drive levers stops the excavator immediately.
To reverse the excavator, pull both drive levers back simultaneously.
(A) Forward
(B) Reverse
(C) Straight ahead
If the dozer is no t at the fron t, as shown in the figure,
STOP
but at the rear, t he opera tion of th e drive lev ers is e xactly opposite. Drive lever forwards:
! The excavator backs up.
!
To drive faster, press the travel speed button (1).
If the driving resistance increases when driving with
travel speed (due to a slope or obstacle), the machine
automatically swi tches to low speed. If the driving resistance decreases after a while, the machine switches
automatically back to travel speed.
76
Page 77
Operation
Two audible signa ls will sound an d the indicator (1) wi ll come up.
Pressing the travel speed button again switches back to normal
speed and only one signal will sound.
STOP
el frame).
Turning
Do not drive fast on muddy or uneven terrain, also if another control is operated (e.g. turning the swiv-
STOP
STOP
During driving
!
Pull the left driv e lever to neutral, leave the right d rive lever
pushed forward.
(A) The excavator makes a left turn.
Turns are described for the forward direction of travel with the dozer at the front. If the dozer is positioned at the rear, the steering movements should be in the opposite direction.
When making turns, be sure nobody is standing within the swing area of the excavator.
77
Page 78
From a standing position
!
Leave the right d rive lever in neutral, push the left driv e lever
forward. In this c ase, the turning radius is d etermined by the
right track.
(A) The excavator makes a right turn.
Turning on the spot
Operation
STOP
!
Move the drive levers in opposite directions. The tracks will turn
button actuated.
in opposite direction s. The centre of the vehicle is its vertic al
axis.
(A) Turning on the spot to the right.
Do not make a turn on the spot with the travel spee d
78
Page 79
Operation
Driving uphill and downhill
STOP
!
When driving on gradients, raise the bucket approx. 200 to 400
slope. Do not use the travel speed button.
mm (A) above the ground (see figure).
Exercise extreme caution when driving up and down a
!
When driving on gradients, let the bucket slide over the ground
if the terrain allows it.
Notes for rubber crawler operation
!
Driving or turning on sharp objects or over steps causes excessive wear on the rubber crawlers and will lead to breaking of the
rubber crawler or cause the cr awler running surface and the
steel inserts to be cut.
!
Make sure that no foreign objects get stuck in the rubber crawler. Foreign objects lead to excessive crawler wear and can
cause it to break.
!
Keep oil products away from the rubber crawlers.
!
Remove any fuel or hydraulic oil spilled on the rubber crawlers.
79
Page 80
Making sharp turns
!
On streets with a high-friction tarmac, e.g. concrete, do not make sharp turns.
Protecting the crawler against salt
!
Do not work with the machine on the seashore. (The salt will cause the steel insert to corrode.)
Operating the controls during excavation work
Operation
STOP
!
Never crush concrete or boulders using side boom swings with the bucket.
!
Do not use the dropping action of the bucket for excavation.
!
Never fully extend the cylinders. Always keep a certain safety margin, especially when operating with a break-
Always observe the following safety instructions when working with the excavator.
er (accesso ry) .
!
Never use the bucket as a hammer to drive posts into the ground.
!
Do not drive or dig with the bucket teeth rammed into the ground.
!
When loading soi l, d o n ot d ig the bu cket deeply into the gr ou nd. Ins tea d, m ak e re lati v ely s ha ll ow sl ic es with
the bucket out as far as possible. This technique reduces the stress on the bucket.
!
When working in water, the water should only reach up the lower edge of the swivel frame.
!
After using the ma chine in wa ter, alway s grea se the pins at the bucket and ar m with grea se un til the ol d lubricating grease emerges.
!
When digging with the boom above the dozer, make sure that the boom cylinder does not come into contact
with the dozer.
!
Never use the excavator as a crane, unless it is equipped with craning equipment (accessory).
!
Adhering soil can be shaken off when the bucket is bei ng emptied by moving the cylinder to the end of the
stroke. Should this not suffice, dump the arm as far as possible and operate the bucket back and forth.
!
When excavating, always lower the dozer completely onto the ground.
80
Page 81
Operation
Note on using wider and deeper buckets
When using a wider or dee per bu ck et, tak e go od car e
when swinging or ret racting the front attachments to
make sure that the bucket does not hit the cab.
Operating the dozer
When working with the dozer, operat e both drive levers with the left hand and the dozer control lever with
the right hand.
!
To lift the dozer, pull the dozer control lever (1) back.
!
To lower the dozer, push the dozer control lever forward.
(A) Dozer up.
(B) Dozer down.
81
Page 82
Operation
Overview of control lever functions (standa rd setting)
The figure shows, in connecti on with the following table, the functions of the left and right control levers.
Control lever Movement
Right control lever 1 Lower boom
2 Raise boom
3Bucket crowd
4 Bucket dump
Left control lever A Arm crowd
BArm dump
C Swivel frame to the left
D Swivel frame to the right
Operating the boom
If the excavator is overloaded, the boom must be lowered until the load rests on the ground. To prevent personal
injuries and damage to equipment, do not operate any other functions (e.g. moving the swivel frame).
!
To raise the boom, pull the right control lever back (figure/ ).
The hydraulic cylinde r of the boom is equipp ed with a
cushioning function, which prevents the excavated
material in the bu cket from falling out. Whe n the hydraulic syst em op er at i ng te m pe ra ture is low, th e cu sh ioning is delayed for approx. 3 to 5 s. This delay is due
to the viscosity of the hydraulic oil and is not a malfunction.
!
To lower the boom, push the rig ht control lever forward (figure/ ).
Watch the boom duri ng lowering, so that the b oom or
the bucket teeth do not hit the dozer.
The boom moves as shown in the figure.
82
Page 83
Operation
Operating the arm
!
To dump the arm, push the left control lever forward (figure/ ).
!
To crowd the arm, pull the left control lever back (figure/ ).
The arm moves as shown in the figure.
83
Page 84
Operating the bucket
!
To crowd (diggi ng) the bucket, mov e the right contro l lever to
the left (figure/ ).
!
To dump (empty) the bucket, move the right control lever to the
right (figure/ ).
When crowding the bucket, take care that the teeth do
not hit the dozer.
The bucket moves as shown in the figure.
Operation
84
Page 85
Operation
Swivelling the swivel frame
STOP
the movement.
Swivel carefully to avoid any contact of the front attachments with adjacent objects.
No person is allowed to stand in the swivel area during
!
To turn anticlockwise, move the left control lever to the left (figure/ ).
!
To turn clockwise, move th e left control lever to the right (figure/ ).
The turning operation takes place as shown in the figure.
Swinging the boom
STOP
!
To swing the boom counter- clockwise, press the boom sw ing
pedal on the left-hand side (figure/ ).
!
To swing the boom cl oc kw is e, pr ess the b oom swi ng pedal on
the right-hand side (figure/ ).
The figure details the swing movement.
No person is allowed to stand in the swing area during
the movement.
Swing carefully to avoid any contact of the front attachments with adjacent objects.
The boom swing control pedal can be secured against inadvertent operation by lowering the locking
flap. Fold the locking flap when the boom swing pedal is not in use.
85
Page 86
Operating the auxiliary ports
Implements are operated using the auxiliary ports.
Operation
STOP
STOP
STOP
Only implements approved by KUBOTA may be used. The implements must be operated in accordance with the operating instructions supplied with them.
With the use of a breaker or another attachment for demolition work, where material (e.g. asphalt) is
removed and can uncontrollably sputter away, personal protective equipment is absolutely to be worn
(safety shoes, safety helmet, eye protection, ear protection and if necessary facial mask). The use of
a gravel guard (front protective grid) is recommended. For excavation work with a cab, the front window must be closed, in addition. For demolition (according to EN 474-1, Annex G), e.g. tearing down
walls, the corresponding protective equipment is required (e.g. gravel guard).
For auxiliary port specifications, see the "Specifications" section" (page 40).
Make sure that, before carryi ng out the ac tivitie s in the aux iliar y port conn ectors , the pressu re re lief
of the hydraulic eq uipment (pa ge 95) and the auxi liary port con nectors (page 95) ha s been carr ied
out. Depending on the operation setting, the return change valve has to be set to the appropriate position (page94).
The auxiliary ports may only be activated when an implement is attached.
If the auxiliary po rt s hav e n ot been i n u se ov er a long period of t ime , d ir t m ay ha ve ac cu mul ate d o n
the pipe connections. Before installing the implement, drain approx. 0.1 L of hydraulic oil at each port.
Catch the drained hydraulic oil in a container and discard it in accordance with the valid environmental regulations.
!
Start the engine (page 71) and keep it at idle speed until the operating temperature has been reached.
Activating the auxiliary port function
The auxiliary port is used for hydraulic implements, such as a breaker. You can set the flow rate prior to operating
auxiliary port. Refer to the section for the flow rate setting (page 90}) for details.
Switch on the auxili ary port using the auxiliary po rt enable switch
(1). This switch is active when the left control console is lowered and
the starter switch is in the RUN position. Whe n the auxil iary port is
switched on, the indicator Auxiliary port (2) comes on or flashes.
Using this switch, you can also set the operation settings.
86
Page 87
Operation
Auxiliary port 1
The following figure illustrates the auxiliary port 1 and auxiliary port 1 rocker switch (3) connectors.
!
Move the auxiliary port 1 rocker switch in direction ( ). The oil
will flow towards connector (1) on the right side of the arm.
!
Move the auxiliary port 1 rocker switch in direction ( ). The oil
will flow towards connector (2) on the left side of the arm.
The proportional control enables you to smoothly control the implement spe ed. Example: If you move the
rocker switch half a turn to the left, the implement
moves at half speed.
Auxiliary port 2
The following figure illustrates the auxiliary port 2 and auxiliary port 2 rocker switch (5) connectors.
The proportional control enables you to smoothly control the implement spe ed. Example: If you move the
rocker switch half a turn to the left, the implement
moves at half speed.
!
Move the auxiliary port 2 rocker switch in direction ( ). The oil
will flow towards connector (3) on the right side of the arm.
!
Move the auxiliary port 2 rocker switch in direction ( ). The oil
will flow towards connector (4) on the left side of the arm.
87
Page 88
One way hold operation
For one way hold operation, th e return c hange valv e has to b e set to th e direct retur n flow po sition
(page 94).
!
Activate the operation setting for the "one way flow".
Switching on
!
Briefly push the one w ay hold s witch (1) . The oil fl ows on one
side to auxiliary port 1 (2) on the left side of the arm.
Switching off
!
Briefly press the on e way ho ld swi tch to s witch off the oi l flow,
or
!
press the rocker switch for auxiliary port 1 (3) briefly to the right
or left to stop the oil flow.
Operation
Operating modes
The auxiliary port conne ctor is pres et at the factory , enabl ing fou r opera ting modes to be sel ected. Up to si x operating modes can be preset.
Whenever the auxiliary port enable switch (following figure/button 3) is pressed the service mode changes by one
level. The symbol and flow rate index in the display change accordingly.
Whenever the auxiliary port button is pressed the service mode changes by one level.
When the starter switch is turned to the RUN position the most-recently used setting is activated.
88
Page 89
Operation
Select the mode of operation
Mode 0
Auxiliary port not active
Flow rate index
Off
Auxiliary port enable switch
Auxiliary port 1 Not active Max. flow rate Limited flow volume
Auxiliary port 2 Not active Max. flow rate Not active Not active
Mode 1
Flashing
When an operating mod e has be en selec ted and th ere is an " i" (2)
at the bottom right of the symbol (1), you can view the flow rate that
has been set by press ing the infor mation bu tton (button 4) . During
this, the indicator (3) flashes.
Mode 2
Icon
Flashing
Mode 3
Flashing
Flow in one direction
(oil to connector 2 only)
The flow rate set for auxiliary port 1 is shown on the right of the display, that of auxiliary port 2 on the left. The height of bar "A" shows
the flow rate of the respective connectors (1, 2, 3, and 4).
89
Page 90
Operation
Flow rate setting
Suppose the same implement has to be attached to a different excavator. Even when using identical flow rate settings for the other excavator, the working speed may differ. For each excavator, you need to individually adjust the
flow rate settings. Upon changing the implement, you need to determine and adjust the optimum flow rates for the
new implement.
The flow at auxiliary port 1 is not constant when using a different function or if a relief valve is responding.
It is recommended to adjust this setting during the operation of the implement.
!
Turn the starter switch to the RUN position.
!
Press button 1.
!
The display message as in the figure on the right appears.
!
Press button 2 or 3 until "Sp Flow Ctr Set" is selected in the display.
!
Press button 5 to select.
Setting with flow rate index:
!
Press button 5 until the desired flow rate index (1) appears.
Settings with symbol:
!
Press button 4 until the arrow marking (2) on the symbol (3) appears.
!
Press button 2 or 3 until the desired symbol appears.
90
Page 91
Operation
You can select the following symbols:
1. Auxiliary port (default)
2. Brush cutter
3. Rotary grapple
4. Grapple
5. Auger
6. Dipper bucket
7. Breaker
8. Tilt bucket
9. Deactivated
There is no relationship between the icons and the flow
control setting s. Select icons to s uit the im ages of attachments to be connected.
If the "Deactivated" symbol is preset for an operating mode it is skipped during selection.
Setting example:
Operating mode 1 ! "Auxiliary port" (default)
Operating mode 2 ! "Breaker"
Operating mode 3, 4, 5 ! "Deactivated"
Press button 3 to change to ope rating mode 1, operating mode 2
and normal display in that order.
The maximum flow rate can be set for each auxiliary port connector.
!
Press button 4 until the arrow marking (1) on the bar graph (2)
for connector 2 of auxiliary port 1 appears.
!
Press button 2 or 3 to set the height of the bar graph.
!
Press button 4 to chan ge to the next connec tor and carry out
the setting there.
When the bar graph has been set to the highest level, the flow rate is at its maximum.
When the bar graph has been set to its lowest level (no bar is visible), the flow is blocked and no oil will flow.
91
Page 92
!
Press button 1 to complete the settings and return to the normal display.
It is possible that some implements will not be activated even when the bar graph is not at its lowest
level.
Even when the bar graphs are at the same height, it is possible that the implements will not operate
identically.
This does not c onstitute a defect. I n t his ca se , th e flo w rates must be o pti mised correspondin gl y for
the implements.
Operation
92
Page 93
Operation
Setting the maximum flow rate
Is the control lever lock locked?
Yes
Lower the control
No
lever lock
(UNLOCKED position)
Selecting the operating mode
Is the
engine
running?
Moving the arrow marking
Yes
No
Start the
engine
Selection of symbols
Setting the maximum
flow rate
93
Page 94
Return change valve for direct return flow
The change valve has two settings.
Operation
When "direct return flow" is enabled, the return flow is directed from
the implement to the hydraulic oil tank via the return filter. The return
flow is directed via the right auxiliary port 1 connector at the arm only.
When "indirect r eturn flow" is enabled, the return flow is directed
from the implement to the return filter via the control valve and then
to the hydraulic oil tank. In that case, the return flow may use the left
or right auxiliary port 1 conne cto r of the arm ( dep endi ng on the po sition of the rocker switch for auxiliary port 1).
1
Move the return cha nge v al ve to th e r e qui red pos iti on as sh own in th e f igu re, depending on the action of the implement being used (rotary or breaking).
94
Page 95
Operation
Pressure relief of the hydraulic system
!
Lower front attachments and dozer completely.
!
Turn the starter switch to the STOP position.
!
Wait until the engine has come to a standstill.
!
Turn the starter switch to the RUN position.
Do not start the engine!
!
Lower the left contro l cons ole ( 1) and ma ke sure tha t the control lever lock (2) engages.
!
Move control levers (3 and 4) several times to limit stop in all directions.
The hydraulic system is pressure relieved.
3 4
2 1
Pressure relief of the auxiliary ports
!
Lower front attachments and dozer completely.
!
Turn the starter switch to the STOP position.
!
Wait until the engine has come to a standstill.
!
Turn the starter switch to the RUN position.
!
Lower the left control console (1) and make sure that the control lever lock (2) engages.
!
Press the auxiliary port enable switch (1) and turn on the auxiliary port function.
The excavator comes with auxiliary port 1 only or with
auxiliary port 2 additionally. The following description
illustrates the pressure relief process for both auxiliary
ports. According to excavator equipment, the corresponding description is to be applied.
Do not start the engine!
2 1
When the auxil iary port is switched on, the indicator Auxiliary por t
(2) comes on or flashes.
95
Page 96
You will see the se tting of the flow rates in the display. The bar
height "A" shows the flow rate at the respective aux iliary port connectors (1, 2, 3 and 4).
If the bar graph is s et to the l owes t l evel ( as s hown in c onne ct or 3,
no bar obvious), flow is blocked and there is no oil flow.
If the flow is blocked, the pressure cannot be relieved
completely The hydraulic couplings at the auxiliary
port connectors can jam as a result. Then connection
or separation of the hy draulic cables of atta chments
is not possible. Switch to a diffe rent mod e, if availa ble (page 88), or increase the flow rate (page 90).
!
Make sure that the flow rates are not set to the lowest level.
!
Rocker switch auxiliary port 1 (3) on the right control lever must
be pushed over completely to the right and left.
The auxiliary port connectors (1 and 2) are pressure relieved.
Operation
!
Rocker switch au xi li ar y por t 2 ( 5) o n th e l eft co ntr ol l ev er mu st
be pushed over completely to the right and left.
The auxiliary port connectors (3 and 4) are pressure relieved.
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Operation
Placing out of operation
STOP
!
Drive the excavator onto level ground.
!
Extend the hydraulic cylinders as follows:
Park the excavator in such a way that it can not move and is secured against unauthorised use.
Boom: Half-extended
Arm: Half-extended
Bucket: Half-extended
Dozer: Lowered to the ground
Swing mechanism: Front attachments lowered central ly to the ground
!
Stop the engine (page 72).
!
Remove the key.
!
Unbuckle the seat belt and lift the left control console.
!
Refuel the excavator, if necessary (page 107).
!
Close and lock the cab door. The key must remain with the operator.
!
Check the excavator for external damage and for leaks. Any defects must be repaired before the next start.
!
In case of a heavy accumulation of dirt in the area of the tracks and the hinges at the front attachments, clean
the excavator (page 131).
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Page 98
Operating the heating and air-conditioner system (optional)
All the heating and air -con dit ioner system operati ons des c ribe d bel ow mu st be carried out while the
engine is running.
Heating the cab
!
Set the temperature control (1) to the desired position.
Blue ! Cold
Red ! Warm
!
Set the blower switch (2) to position 1, 2 or 3.
!
Set the air nozzles to the desired position.
1 2
Operation
STOP
nozzles and interior air filter with objects (e.g. bags or clothing) when the heater is in operation.
Cooling the cab
!
Set the temperature control (1) to the "Cold" position.
Blue ! Cold
Red ! Warm
!
Set the blower switch (2) to position 1, 2 or 3.
!
Use the air-conditioner switch (3, optional) to switch the system
on. The indicator (4) lights up.
!
Set the air nozzles to the desired position.
Make sure that the cab door is closed while the heating or air-conditioner system is running.
In order to avoid a heat backup and therefore damage to the ventilation system, do not cover the air
1
34
2
!
Set the air nozzles to the desired position.
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Page 99
Operation
De-icing or demisting the windows
Proceed as follows to de-ice the windows or clean them of condensation:
!
Set the temperature control (1) to the "Warm" position.
Blue ! Cold
Red ! Warm
!
Set the blower switch (2) to the 3 position.
!
Use the air-conditioner switch (3, optional) to switch the system
on. The indicator (4) lights up.
The air-conditioner will dehumidify the cab air.
Make sure that the cab door is closed while the heating or air-conditioner system is running.
!
Direct the air nozzles towards the front window.
Operating the wiper/washer system
1
34
2
All cab models are equipped with a wiper/washer system.
Risk of damage to components!
When you turn on the wiper while the windscreen is opened, the wiper can hit the adjacent cab components causing damage to the wiper.
- Do not turn on the wiper switch while the windscreen is open.
Switching on the windscreen wiper
!
The starter switch is in the RUN position.
!
Press the switch (1) to the WIPER/WASHER position.
The wiper operates as long as the switch remains in this position.
!
To switch off, press the switch (1) to the OFF position.
1
In extremely cold weather conditions, make sure the wiper rubber does not stick to the window. This
can damage the wiper rubber or the wiper motor.
Only switch on th e wiper w hen the windo w glas s is wet. If nece ssary , switch on the washer syst em
first.
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Page 100
To turn on the washer system
Operation
The washer system can be operated irrespective of whether the
wiper is on or off.
If the wiper is on:
!
Press the switch (1) to the WIPER/WASHER position again
and hold it down.
If the wiper is off:
!
Press the switch (1) to the OFF position and hold it down.
The washer system runs for as long as the switch is held down.
Do not operate the washer system if its reservoir is
empty as running dry could damage the pum p.
Operating the room light
!
The starter switch is in the RUN position.
!
Press the switch (2) to the ON position.
The interior li ght (1 ) is illu minate d a s lon g as t he sw itc h rem ains in
this position.
1
1
!
To switch off, press the switch (2) to the OFF position.
Operating the rotary beacon
!
The starter switch is in the RUN position.
!
Press the rotary beacon switch (1) to the ON position.
The rotary beacon operates as long as the switch remains in this position.
!
To switch off the rotary beacon, press the switch to the OFF position.
2
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100
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