Kubota U10-3 Handleiding
Kubota U10-3 Handleiding
Kubota U10-3 Handleiding
MODELS
K008-3
U10-3
OPERATING INSTRUCTIONS
W9212-8235-4 - Original - 03/2019
Dear valued customer,
please fill in the form below. Your information will help us to help you.
Type:
Year of construction:
Shipment date:
These operating instructions only apply to KUBOTA excavators K008-3 and U10-3, which comply with
the following EC declaration of conformity (page 8).
In addition, the machine’s product identification number must correspond to the following scope of
application.
Please contact your KUBOTA dealer for any additional information or troubleshooting procedures not men-
tioned in these operating instructions.
We also point out that the contents of these operating instructions are not part of an earlier existing agreement,
promise or legal relationship or amend these. All responsibilities arise of the respective sales contract contain-
ing the complete and exclusively valid contractual warranty. See the "Duties, liability and warranty" section
(page 10). This documentation does neither extend nor restrict the contractual warranty.
KUBOTA Baumaschinen GmbH reserves its right to change the information contained in this document with
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 ex-
pressly approved by the manufacturer. Violators of the above terms are liable for compensation for damages.
W9212-8235-4
03/2019
Tables
Table of contents
Abbreviations ...................................................................................................................................................... 5
General symbols................................................................................................................................................. 6
Foreword ............................................................................................................................................................ 7
EC declaration of conformity .............................................................................................................................. 8
Date of issue of the operating instructions ......................................................................................................... 8
Operating personnel ........................................................................................................................................... 8
Location of the operating instructions ................................................................................................................ 9
Spare parts ......................................................................................................................................................... 9
Model overview................................................................................................................................................. 33
Model K008-3/U10-3 ................................................................................................................................... 33
Variant U10-3 SIDE LEVER ........................................................................................................................ 33
Dimensions ....................................................................................................................................................... 34
Dimensions of the K008-3/U10-3 ................................................................................................................ 34
Specifications ................................................................................................................................................... 36
Identification of the excavator........................................................................................................................... 38
Standard equipment ......................................................................................................................................... 38
Identification of the engine ............................................................................................................................... 38
OPERATION ..................................................................................................................................... 52
TROUBLESHOOTING ...................................................................................................................... 90
MAINTENANCE ................................................................................................................................ 93
W9212-8235-4 3
03/2019
Tables
Lubrication .................................................................................................................................................109
Greasing the swivel gear ......................................................................................................................110
Greasing the pitch bearing ...................................................................................................................111
Greasing the bucket bolts .....................................................................................................................111
Checking and adjusting the crawler tension ..............................................................................................112
Checking the crawler tension ...............................................................................................................112
Adjusting the crawler tension................................................................................................................113
Greasing the pilot valve linkage .................................................................................................................113
Checking the electric cables and connections ..........................................................................................113
Checking and replacing the fuel lines ........................................................................................................114
Checking the bolted joints ...............................................................................................................................115
Tightening torque for screws .....................................................................................................................115
Tightening torque for hose clamps ............................................................................................................115
Tightening torque for hydraulic hoses .......................................................................................................115
Tightening torque for hydraulic pipes ........................................................................................................116
Tightening torque for hydraulic adapters ...................................................................................................116
Recommended lubricants ...............................................................................................................................117
Repair work on the machine ...........................................................................................................................119
4 W9212-8235-4
03/2019
Tables
Abbreviations
% percent kV kilovolt
° degrees kW kilowatt
°C degree Celsius l litre
1/min revolutions per minute l/min litres per minute
A Ampere LpA sound pressure level operator's place
acc. according LwA sound power level
API American Petroleum Institute m metre
approx. approximately m/s² metre per square second
ASTM American Society for Testing and Materi- m³ cubic metre
als
bar Bar max. maximum
CECE Committee for European Construction MIL Military Standards
Equipment
CO2 carbon dioxide mm millimetre
dB decibel MPa Megapascal
DIN Deutsches Institut für Normung (German N Newton
Institute for Standards)
e.g. for example OPG Operator Protective Guard
EMC electromagnetic compatibility resp. respectively
EN Europäische Norm (European standard) RMS Root Mean Square
GL Ground level ROPS Roll Over Protective Structure
h Hour s second
incl. including SAE Society of Automotive Engineers
ISO International Organization for Standardi- t ton
zation
kg kilogramme TOPS Tipping Over Protective Structure
km/h kilometre per hour V Volt
kN kilonewton
W9212-8235-4 5
03/2019
Tables
General symbols
Travel speed
Low speed
Forward travel
Backward travel
6 W9212-8235-4
03/2019
General information
GENERAL INFORMATION
Foreword
Safety instructions, the rules and regulations for the use of excavators given in these operating instructions
apply to the excavators mentioned in this documentation.
The data in the operating instructions apply for all variants. Differences are highlighted (e.g. K008-3 or U10-3 or
U10-3 SIDE LEVER).
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 blade is at the front when driving
forwards as shown in the figure.
The symbols for operating and safety instructions are listed under "Safety Symbols" (page 12).
W9212-8235-4 7
03/2019
General information
EC declaration of conformity
With the EC declaration of conformity, KUBOTA Baumaschinen GmbH certifies that the exca-
vator 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 respon-
sible authorities.
Should the EC declaration of conformity get lost, please contact your KUBOTA dealer.
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 allowed to work on or with the excavator only under the supervision of an experienced
operator.
Operator
According to industrial safety regulations, only persons who were instructed in the operation of the excavator,
who have proven their ability 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 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).
Only trained and instructed personnel are allowed to work on the machine.
Qualified personnel
Based on their technical training and experience in their field, qualified personnel should have sufficient
knowledge about the technology used in this machine and be familiar with the applicable national work safety
regulations, accident prevention regulations and the generally accepted technical rules so that they can assess
the safe condition of the machine.
8 W9212-8235-4
03/2019
General information
Spare parts
When ordering spare parts, please always provide the following information:
Machine’s product identification number and year of construction (see type plate)
Part number of the spare part (see original KUBOTA spare parts catalogue)
Quantity
Customer number
For written orders, please provide this information exactly, or for telephone orders, please have this information
ready before calling. This makes the process easier for us and for you, and prevents errors and incorrect orders
or deliveries.
W9212-8235-4 9
03/2019
Safety rules
SAFETY RULES
Basic safety instructions
The EC machine utilization directive (2009/104/EC) dated 16/09/2009 applies for the operation of the
aforementioned excavator.
The information in these operating instructions applies for maintenance and repairs.
These operating instructions, in particular the safety instructions, must be followed by all persons working near
or with the excavator. Above and beyond this, the safety rules and regulations applicable for the site must also
be observed.
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
The scope, period and form of the warranty are set forth in the sales and delivery conditions of the manufactur-
er. The operating instructions valid at the time of delivery shall be the basis for any warranty claims arising from
errors in the valid operating instructions (page 8). The following applies above and beyond the sales and deliv-
ery conditions: No warranty or liability shall be assumed for personnel and property damages resulting from one
or more of the following reasons:
operation of the excavator with defective safety devices or improperly installed or non-operational safety
and protective devices,
10 W9212-8235-4
03/2019
Safety rules
unapproved use and unauthorised operation (page 13) are excluded and
the approved use (page 13) is ensured and the excavator is operated in accordance with the contractual
conditions of use.
W9212-8235-4 11
03/2019
Safety rules
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 operating procedures which must be followed exactly to prevent damage to the
excavator or other property.
Identifies operating procedures which must be followed exactly to prevent danger to persons.
Identifies operating procedures for the proper disposal and storage of ensuing waste materials.
12 W9212-8235-4
03/2019
Safety rules
Approved use
The excavators specified in this operating instructions may only be used to loosen 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.
regular servicing,
Unapproved use
Any improper use – i.e. any deviation from the information in the "Approved use" section (page 13) of these
operating instructions – is considered an unapproved use. This also applies to the non-observance of the
standards and guidelines listed in these operating instructions.
Hazards can occur as a result of improper use. Such improper uses include:
Using the excavator to lift loads without the proper equipment for lifting operations
Using the excavator under conditions of extreme temperatures (extreme heat or cold)
Using the excavator for demolition work, with the danger of falling objects (e.g. tearing down walls).
The owner must ensure that the excavator is only used properly and that any danger to the life and health of
the user or others who are in the proximity of the user are eliminated. Furthermore, observance of the safety
rules and observance of 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.
Refuse 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 be undertaken in an appropriate way, according to legally prescribed pollution control 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.
W9212-8235-4 13
03/2019
Safety rules
Noise emission
The noise levels were determined using the method of determining the guaranteed sound pressure level of ISO
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 necessary personal protective equipment
to the operator (ear protection).
Noise of a noise level of more than 85 dB (A) can cause hearing damage.
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 stress on the operator over a longer period of time must be determined by the owner at the site of
application, in compliance with directive 2002/44/ EC in order to consider individual magnitudes of influence.
14 W9212-8235-4
03/2019
Safety rules
Keep danger, warning and safety labels clean and free from interfering objects.
Clean danger, warning and safety labels with soap and water and dry with a soft, clean cloth.
Replace damaged or missing danger, warning and safety labels with new ones from your KUBOTA dealer.
If a component with glued-on danger, warning and safety labels is replaced with a new part, make sure
that the new labels are affixed to the same location as the replaced component.
Danger, warning and safety labels should be stuck only on clean and dry surfaces. Press any air bubbles
into the outer edge of the sticker.
The positioning of the danger, warning and safety instructions is illustrated in the following figures.
W9212-8235-4 15
03/2019
Safety rules
1) Code #: RB456-5739-0
Mortal danger from moving excavator!
When staying in the danger zone and in the case of a suddenly start-
ing excavator, there is the danger of being run over by the excavator.
Only start the machine from the operator's seat.
Do not start the machine by bypassing the starter poles.
2) Code #: RB238-5736-0
Risk of fire from inflammable diesel fuel!
Inflammatory vapours can occur in the fuel tank, which may go up in
flames as a result of an ignition source.
Do not use open flames in the vicinity of the fuel tank.
3) Code #: RD458-5738-0
Danger of cutting and crushing through rotating parts!
The rotating fans can cut into limbs and the rotating belt drive can pull
in and crush limbs.
Switch off the engine before working in the engine room.
Ensure that the engine and all the engine parts have come to a complete
standstill.
Do not reach into rotating components.
16 W9212-8235-4
03/2019
Safety rules
1) Code #: RB419-5796-0
Not an attachment point for lifting gear.
2) Code #: RA029-4539-0
Risk of death when working with the roll-over safety bar folded
down!
If the machine tips over while the roll-over safety bar is folded down, the
operator is not protected on the operator’s seat. Because of the fas-
tened seat belt, the operator cannot jump off of the machine. The ma-
chine can fall onto the operator and roll over him.
As a rule, always work with the roll-over safety bar folded up and with the
seat belt fastened.
Only operate the machine with the roll-over safety bar folded down and
without the seat belt fastened when passing through a low point on level
ground.
3) Code #: RA028-4537-0
Danger of being crushed by swinging roll-over safety bar!
Shear forces can cause serious injuries if any limbs are crushed.
Keep hands away from the swivel joints when swinging the roll-over safety
bar.
4) Code #: RB456-5795-0
Danger of injury from components under pressure!
In the case of improper operating of the crawler tensioner, grease or the
pressure valve can splash out under high pressure and lead to injury.
Before working on the crawler tensioner, please read the operating instruc-
tions!
W9212-8235-4 17
03/2019
Safety rules
1) Code #: RB456-5722-0
Mortal danger by crushing!
A low safe distance to the boom can impede an emergency exit from the
danger zone. Being crushed by the boom can result in severe injury or
death.
Do not remain within the swinging range of the boom.
Ensure safe distance to obstacles and sufficient freedom of movement.
2) Code #: RA028-5728-0
Mortal danger by crushing!
Low safe distance to the excavator and to obstacles can prevent an
emergency exit from the danger zone. Crushing by excavator results in
severe injury or death.
Do not enter the manoeuvring area.
Ensure safe distance to obstacles and sufficient freedom of movement.
3) Code #: RA118-5776-0
Risk of being crushed by the boom!
When lifting and swinging the boom, there is a danger of getting caught
between the boom and the protective structure or swivel frame.
Do not step beyond the front part of the boom swing pedal.
Please read the operating instructions before commissioning.
4) Code #: 69198-5784-0
Risk of accidents due to incorrect operation!
Improper operating can lead to damage to the excavator, to serious
accidents with a high risk of injury and death as a result.
Please read the operating instructions before commissioning.
18 W9212-8235-4
03/2019
Safety rules
1) Code #: TA040-4958-0
Risk of burns from hot components!
Surfaces can be hot and lead to burns.
Do not touch hot parts, such as exhaust muffler, etc.
2) Code #: RA128-5776-0
Danger of cutting and crushing through rotating parts!
The rotating fans can cut into limbs and the rotating belt drive can pull in
and crush limbs.
Switch off the engine before working in the engine room.
Ensure that the engine and all the engine parts have come to a complete
standstill.
Do not reach into rotating components.
3) Code #: RA028-5724-0
Danger of injury from liquids under pressure!
Escaping hydraulic oil under pressure can penetrate into the skin.
Risk of burns from hot components!
Surfaces can be hot and lead to burns.
Apertures, e.g., ventilation systems, and hot components, must not be
covered with hands.
W9212-8235-4 19
03/2019
Safety rules
1) Code #: RA028-5746-0
Max. lifting capacity during swivel operation is 360°
K008-3
1) Code #: RA138-5746-0
Max. lifting capacity during swivel operation is 360°
U10-3
20 W9212-8235-4
03/2019
Safety rules
1) Code #: RA131-9371-0
Caution! Risk of component damage!
Fastening onto the roll-over safety bar can damage the control lever
console.
Carefully swing the roll-over safety bar up.
2) Code #: RA131-9375-0
Caution! Risk of component damage!
Fastening onto the roll-over safety bar can damage the control lever
console.
Carefully swing the roll-over safety bar up.
3) Code #: RA131-9361-0
Danger of impact on the control lever!
Actuate the throttle lever carefully.
4) Code #: RA131-9365-0
Danger of impact on the control lever!
Actuate the dozer control lever carefully.
W9212-8235-4 21
03/2019
Safety rules
1) Code #: RB456-5786-0
Danger due to electric current!
Excess voltage can cause injuries while working on the electrical sys-
tem.
Before working on the electrical system, disconnect it from the power
supply.
Wear personal protective equipment.
Before working on the electrical system, please read the operating instruc-
tions!
2) Code #: RB456-5789-0
Danger in the danger zone of the front attachments!
Standing in the danger zone while the front attachments are moving
suddenly can lead to severe injury or even death.
Do not stand in the danger zone of the front attachments.
Ensure safe distance to obstacles and sufficient freedom of movement.
3) Code #: RB456-5788-0
Risk of death due to electric current!
When working in the vicinity of overhead power lines without a sufficient
safe distance between them and the machine, the electricity can jump
onto the machine.
Maintain a safe distance from overhead power lines.
22 W9212-8235-4
03/2019
Safety rules
1) Code #: RD839-5739-0
Caution! Risk of component damage!
When using a wider or deeper bucket, take good care when swinging or
retracting the front attachments to make sure that the bucket does not
hit the canopy.
Read the Operating Instructions for the attachment.
2) Code #: RB456-5783-0
Mortal danger by crushing!
Low safe distance to the excavator and to obstacles can prevent an
emergency exit from the danger zone. Crushing by excavator results in
severe injury or death.
Before leaving the machine, lower bucket to the ground.
Lift the control lever lock, turn the starter switch to the STOP position and
remove the key.
W9212-8235-4 23
03/2019
Safety rules
Safety devices
Before starting the machine, all safety devices must be installed properly and operational. Manipulating the
safety devices is prohibited.
and secured against restarting (starter switch in STOP position and key removed).
If the control lever lock (1) is located in the upper position, the
control lever functions are locked and out of service.
To release the control lever, place the control lever lock into
the lower position.
24 W9212-8235-4
03/2019
Safety rules
If the swivel frame lock (1) is in the bottom position, the swivel
frame and the track frame are interlocked.
If the electrical system fails, the engine can be shut off manually.
W9212-8235-4 25
03/2019
Safety rules
Seat belt
Do not allow hydraulic oil to contact the skin or clothing. Skin parts which may have come in contact with hy-
draulic oil must be washed with water and soap immediately, if possible. Do this thoroughly and repeatedly,
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, the excavator may not be taken into operation or, if in operation,
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 hydraulic oil must be bound immediately with an oil binding agent. The contaminated oil binding agent
must be stored in suitable containers and in accordance with the valid regulations.
26 W9212-8235-4
03/2019
Safety rules
Fire protection
The excavator components and attachments (in particular the engine and the exhaust system)
reach high temperatures even at normal working conditions. An electric installation which is
damaged 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.
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 fre-
quently.
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. Any defective parts should be replaced
immediately in order to avoid leakage.
Electric lines and connections must be checked regularly for signs of damage. Damaged components 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 ma-
chine.
Always keep a multipurpose fire extinguisher at or close to the machine. Make yourself familiar with the op-
eration of the fire extinguisher. In the event of fire in the electrical or hydraulic system, use a CO2 fire extin-
guisher to combat the fire.
W9212-8235-4 27
03/2019
Recovery, loading and transport
A tow bar must be used for the recovery. If a tow rope is used, an additional vehicle to brake the excavator
must also be attached. The tow bar or tow rope must be suitable for the recovery of the excavator in re-
spect of the towed load. Do not use damaged recovery aids.
Do not step into the danger zone between the vehicles during the recovery procedure. If a tow rope is
used, keep a distance of at least 1½ 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 36).
Before the lifting gear is attached, check that the specified safety inspections have been performed and the
lifting gear is in perfect condition.
The excavator may only be lifted at the points provided. Do not attach the lifting gear to any other grom-
mets or areas as this can lead to substantial damage.
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.
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 ramp so that the centre line of the transport vehicle is aligned with the centre
line of the excavator to be loaded.
Do not drive the excavator onto the transport vehicle without ramps and with the boom.
Engage the parking brake of the transport vehicle and secure its front and rear wheels with chocks.
28 W9212-8235-4
03/2019
Recovery, loading and transport
Secure the excavator against sliding on the transport vehicle with chocks or chains or with suitable tiedown
straps. The chocks must be secured at the crawlers and on the transport vehicle with suitable means. The
driver of the transport vehicle is responsible for the secure fastening of the excavator on the vehicle.
A guide is required for driving the excavator onto and off the transport vehicle. The guide is responsible 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. Ob-
serve the applicable traffic rules and regulations.
Recovery
Attach the tow bar or tow rope to the towing eye (see figure)
on the excavator and to the towing vehicle. The tow bar
should be mounted at a right angle to the vehicles.
If the towing eye of the excavator is not accessible, a tow rope can also be fastened around the centre of
the dozer blade.
During the recovery procedure, the operator must be seated on the operator's place.
Lift the dozer until the dozer cylinders are fully retracted.
W9212-8235-4 29
03/2019
Recovery, loading and transport
Swing the boom from the central position approx. 10 to 15 degrees to the right.
Attach the lifting gear with a shackle to the lifting eye (1) on
the left side of the boom.
Attach the lifting gear with shackles to the lifting eyes (see
figure) on each side of the dozer.
Tension the lifting gear slightly with the crane (see figure).
Always keep the machine level. Be sure that the centre line of
the crane hook is aligned as exactly as possible with the rotation
centre line of the excavator and that the lifting angle is ≤ 60°. Lift
the excavator.
30 W9212-8235-4
03/2019
Recovery, loading and transport
Bring the excavator exactly into line with the ramps and
drive up straight.
Do not turn or steer while driving up the ramps; if necessary, reverse the excavator and drive up
again after realigning it.
Danger to life!
No person is allowed to stand in the loading area during movement. Risk of crushing.
Take care during swivel operations, the front attachments could thrust against 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 protecting the vehicle, use the points as shown in the figure.
W9212-8235-4 31
03/2019
Recovery, loading and transport
For safe attachment, swing out the arm and bucket and
lower the boom to the ground until the bucket linkage
touches the loading area.
Secure the chains and the dozer blade with beams (2).
32 W9212-8235-4
03/2019
Description of the excavator
Model K008-3/U10-3
W9212-8235-4 33
03/2019
Description of the excavator
Dimensions
For the dimensions of the K008-3 and U10-3, refer to the following figures and the table.
A B C D E F G H I J K L M N O P Q R S T
700/ 700/
K008-3 245 300 2230 820 2870 2030 1720 1380 1120 1420 1940 200 180 2000 750 2750 3020 3070
860 860
750/ 750/
U10-3 355 435 2230 900 3050 2210 1800 1550 1250 1420 2100 215 190 2310 670 2980 3330 3380
990 990
34 W9212-8235-4
03/2019
Description of the excavator
Arm version
Name Type
W9212-8235-4 35
03/2019
Description of the excavator
Specifications
Following are the specifications for these series.
KUBOTA Excavator
Model name K008-3 U10-3
Type Rubber crawler Rubber crawler
Machine weight* kg 830 970
Operating weight** kg 905 1045
Volume m³ 0.022 0.024
Bucket
Width mm 350 380
Type Water-cooled three-cylinder diesel engine
Model name D722-E4-BH-2EU D722-E4-BH-3EU
Displacement cm³ 719 719
Engine performance
Engine kW 7.5 7.5
ISO 9249
Rated speed 1/min 2050 2050
CO2 emission***
g/kWh 1019.8 1019.8
(Engine family HKBXL.778KCB)
Swivel speed (swivel
1/min 8.3 8.3
frame)
fast
- 4.0
km/h
Vehicle speed
slow
2.0 2.0
km/h
Performance
Ground pressure kPa
22.5 (0.23) 24.5 (0.25)
(without operator) (kgf/cm²)
%
Climbing performance 27 (15) 27 (15)
(degrees)
%
max. lateral sway 18 (10) 18 (10)
(degrees)
Dozer width x height mm 700x200 860x200 750x200 990x200
rad
Left 0.96 (55) 0.96 (55)
Swing angle of the (degrees)
boom rad
Right 1.05 (60) 0.96 (55)
(degrees)
max. volume
L/min 21 21
(theoretical)
Auxiliary port
MPa 16.7 17.7
max. pressure
bar 167 177
Volume of the fuel reservoir l 12 12
Pulling capacity at the towing eye N 35300 35300
Vertical load at the towing eye N 4100 4100
LpA dB (A) 77 77
Noise level
LwA (2000/14/EC) dB (A) 90 90
Digging m/s² RMS < 2.5 < 2.5
Hand-arm Levelling m/s² RMS < 2.5 < 2.5
Vibration****
system
(ISO 5349-2:2001)
Driving m/s² RMS < 2.5 2.9
Idling m/s² RMS < 2.5 < 2.5
Digging m/s² RMS < 0.5 < 0.5
Whole body Levelling m/s² RMS < 0.5 < 0.5
(ISO 2631-1:1997) Driving m/s² RMS 0.85 1.21
Idling m/s² RMS < 0.5 < 0.5
* With original KUBOTA bucket 17.5 kg, ready for operation.
** Machine weight incl. operator 75 kg.
*** The CO2 measurement is based on the check carried out for an engine representative of the engine
family, using a designated check cycle under laboratory conditions. The specifications do not implicate or
guarantee the performance of a given engine.
36 W9212-8235-4
03/2019
Description of the excavator
**** These values are measured under specific conditions at maximum engine speed and can deviate, de-
pending on the operating situation.
W9212-8235-4 37
03/2019
Description of the excavator
1. CE label
2. Max. pulling capacity at the towing eye
3. Max. vertical load at the towing eye
4. Product identification number
5. Year of construction
6. Engine performance
7. Operating weight
8. Model name
9. Manufacturer
10. Representative
Standard equipment
The different models have the following standard equipment:
1. Engine number
2. Engine family and engine type
38 W9212-8235-4
03/2019
Assembly and functions
W9212-8235-4 39
03/2019
Assembly and functions
Operator's place
The operator's place is located in the middle of the excavator. It
includes the following control elements:
1. Working light
2. Control console
3. Selector lever for the dozer/extendable track width
4. Operator's seat
5. Seat belt
6. Lever for the engine hood
7. Swivel frame lock
8. Roll-over safety bar
40 W9212-8235-4
03/2019
Assembly and functions
W9212-8235-4 41
03/2019
Assembly and functions
5. Horn switch
Depressing the horn switch activates the horn.
7. Starter switch
The starter switch serves as the master switch for the entire machine and as switch for pre-glowing and
starting the engine.
42 W9212-8235-4
03/2019
Assembly and functions
3. Charge lamp
The indicator lights up when the starter switch is switched to the RUN position. The charge lamp goes off
as soon as the engine has started.
4. Time meter
The time meter indicates in intervals of 0.1 hours (i.e. 6 minutes) the hours of operation of the machine.
The time meter even continues when the engine has stopped but the starter switch is still in the
RUN position.
Controls K008-3/U10-3
W9212-8235-4 43
03/2019
Assembly and functions
44 W9212-8235-4
03/2019
Assembly and functions
9. Throttle lever
The engine speed can be infinitely adjusted from idle to maximum engine speed using the throttle lever. To
increase engine speed, pull back the throttle lever. To decrease engine speed, push forth the throttle lever.
W9212-8235-4 45
03/2019
Assembly and functions
Working light
Fuse box
The fuse box (1) is positioned to next to the radiator under the
engine hood.
Main fuse
46 W9212-8235-4
03/2019
Assembly and functions
Battery
The battery (1) is positioned behind the engine under the engine
hood.
Tray
Tool compartment
W9212-8235-4 47
03/2019
Assembly and functions
The fuel tank filler opening (1) is positioned to the left in front of
the engine under the engine hood.
48 W9212-8235-4
03/2019
Assembly and functions
Engine compartment
The engine compartment (see figure below) is located at the rear of the swivel frame below the operator's seat.
It is covered by a lockable engine hood.
W9212-8235-4 49
03/2019
Assembly and functions
The hydraulic oil tank contains the suction filter and the return filter.
50 W9212-8235-4
03/2019
Assembly and functions
The accumulator allows the boom and the arm to be lowered in case of an engine failure.
The drive levers, the boom swing pedal and the auxiliary port pedal activate the valve for the corresponding
cylinders, drive unit or the implement itself.
The hydraulic oil tank contains the suction filters and the return filter.
W9212-8235-4 51
03/2019
Operation
OPERATION
Safety rules for operation
The safety instructions (page 10) must be followed.
The excavator may only be operated according to its approved use (page 13).
The machine may only be operated by instructed or trained personnel (page 8).
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 safety and 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 carried out. If defects are detected, the excavator should only be taken into operation after
the defects have been repaired.
Wear tightly fitting working clothes in accordance with the trade association regulations.
During the operation of the excavator, nobody except the operator is allowed to mount the excavator or to
be inside the excavator.
For getting on and off, the swivel frame should be put in an angle which allows the operator to use the
crawler as a step.
Always stop the engine when leaving the excavator. In exceptional cases, e.g. for troubleshooting, the
excavator can also be left with the engine running. The operator must make sure that the control levers are
locked during such an operation. The controls may only be used while the operator is sitting on the opera-
tor's seat.
During operation the operator must remain seated on the operator's seat with tightly fastened seat belt.
Arms, legs or head must not protrude beyond the swivel frame at any time.
If the operator leaves the excavator (e.g. for breaks or at the end of work), the engine must be stopped and
the excavator must be secured against restarting by removing the key. The control levers are to 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 le-
thal gas.
Never crawl under the excavator before the engine is stopped, the key 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 sup-
ports.
52 W9212-8235-4
03/2019
Operation
Children are normally attracted to machines and their normal operation. If children are in the
vicinity of the machine and are not at a suitable distance and in the field of vision of the operator,
this can lead to serious accidents or even death of the children.
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 with you on your machine, there is no safe place for passengers. Children could 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.
Be particularly careful when manoeuvring. Look behind and down below on the machine and ensure that
there are no children in the manoeuvring area.
Before leaving the machine, park it so that it cannot move. When leaving the machine (e.g. for breaks or at
the end of work), stop the engine, remove the key and close the cab door, if present.
If the operator's working and driving area is obscured, the operator must be supported by a guide.
Before starting work, the guide and the operator must agree the necessary signals.
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!
W9212-8235-4 53
03/2019
Operation
When working with the excavator in the vicinity of overhead power lines and tram lines, a minimum distance as
specified in the following table must be maintained between the excavator and its attachments and the power
line.
If safe distances can not be maintained, the power lines must be switched off in coordination with their 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 consid-
eration.
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 possible, do not leave the operator's place, warn any approaching persons of the dan-
ger, and have the power switched off.
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 position and routing of the power lines must be determined
together with the owners or operators and the required safety measures must be determined.
If power lines are encountered or accidentally damaged, the operator must stop working immediately and in-
form the responsible person.
54 W9212-8235-4
03/2019
Operation
Initial operation
Before initial operation, the excavator must first be checked visually for external transit damages and checked if
the shipped equipment is complete as ordered.
For a description of all operation features, see the "Operating the excavator" section (page 55) as well as
the following sections.
During the first 50 hours of operation, the following points should be adhered to in all cases:
Do not operate the excavator with full speed and full load.
When working in cold weather, allow some extra time for the engine to warm up.
Pre-operational services
For the performance of the services, the excavator must be parked on level ground and the key
must be removed. Also, the control levers and the swivel frame have to be locked (page 24, 25).
Open the engine compartment cover (page 89). Always close the engine compartment cover after the work
is done.
Walk-around inspection
Check the excavator for visible damage, loose screws and leaks.
Check the danger, warning and safety labels on the machine. They must be complete and legible
(page 15).
Pull out the oil dipstick (1) and wipe it with a clean cloth.
Insert the oil dipstick completely and pull it out again. The
oil level should be in the "A" area. If the oil level is too low,
add engine oil (page 102).
When the oil level is too high or too low, the engine
might get damaged during operation.
W9212-8235-4 55
03/2019
Operation
If the coolant level is below the LOW mark a short time after adding coolant, the cooling system
is leaky. The excavator must only be started again after the fault is repaired.
Check the radiator (1) for leaks and debris (e.g. leaves).
Check the V-belt (1) for cracks and proper tension. It should
be possible to depress the V-belt for about 10 mm. Tighten
the V-belt (page 100).
56 W9212-8235-4
03/2019
Operation
Check the exhaust system for leaks and security (formation of cracks).
If the inspection is carried out when the engine is warm, there is a risk of burns at the exhaust
system.
If the exhaust system is leaky or loose, the excavator may only be taken into operation after the defects
are eliminated.
Check the oil level in the sight glass (1). The oil level should
be half way up the sight glass. Carefully check the position
of the hydraulic cylinders again before topping up. For more
information, see the "Topping up hydraulic oil" section
(page 106).
W9212-8235-4 57
03/2019
Operation
Check the water separator (1) for water content and con-
tamination, clean if necessary (page 105).
Lubrication
58 W9212-8235-4
03/2019
Operation
Wipe emerged grease off immediately and store dirty cleaning cloths in the containers provided
for disposal.
W9212-8235-4 59
03/2019
Operation
If the fuel level is too low, refuel the excavator (page 87).
When getting on and off the excavator, always make sure the control levers and the swivel frame are locked
(page 24, 25).
Adjust the operator's seat so that fatigue-free and comfortable working is possible. It should be
possible to operate all controls safely.
Pull the horizontal seat adjustment lever (1) up and slide the
seat to the desired position by moving it forward or back, then
release the lever.
60 W9212-8235-4
03/2019
Operation
If the engine compartment cover is not locked, the operator's seat can tilt backwards. Before
buckling up the seat belt, check that the engine compartment cover is locked.
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 neutral position. Also make sure the control levers
are locked.
Starting and stopping the excavator is only allowed when the operator is sitting on the operator's
seat.
When starting the excavator for the first time on a work day, carry out the pre-operational ser-
vices (page 55).
Before starting the engine, make the necessary operator station adjustments (page 60).
If the engine does not start immediately, cease the starting procedure. Wait a short time before
reattempting a start. If the engine does not start after several attempts, contact skilled personnel.
If the battery is discharged, jump-start the excavator (page 85).
W9212-8235-4 61
03/2019
Operation
Insert the key into the starter switch (5) and turn it to the
RUN position.
If the fuel level indicator (1) lights up, there are only 2.0 L of fuel
left. Refuel the excavator (page 87).
The engine oil pressure indicator (2) lights up and goes off after
the engine has started.
The charge lamp (3) lights up and goes off after the engine has
started.
The coolant temperature indicator (4) lights up and goes off after
the engine has started.
Turn the starter switch to the START position and release it as soon as the engine has started.
Some smoke is normal after starting the engine, even if it lasts a few seconds.
Set the throttle lever to idle speed and warm up the engine for approx. 5 minutes.
62 W9212-8235-4
03/2019
Operation
Turn the starter switch to the START position and release it as soon as the engine has started.
If the engine is to be stopped to take the excavator out of operation, the services for placing the
excavator out of operation (page 83) must be carried out.
Turn the starter switch to the STOP position and remove the key.
The operator must observe the indicators and displays after starting and during operation.
If the engine oil pressure indicator lights up during operation, immediately stop the engine and
contact skilled personnel.
If the charge lamp lights up during operation, immediately stop the engine and contact skilled
personnel.
If the fuel level indicator lights up, there are only 2 L of fuel left. Refuel the excavator (page 87).
If the coolant temperature indicator lights up during operation, park the machine at a safe location
and allow the engine to idle. Turn off the engine after it has idled for about 5 min. and check the
level of the coolant (page 56).
the exhaust fumes are black or white. When the engine is still cold, white smoke for a short time is normal.
W9212-8235-4 63
03/2019
Operation
Adhere to the general safety rules (page 10) and the safety rules for operation (page 52).
Check the ground for stability, and verify if there are holes
or other potential obstacles.
64 W9212-8235-4
03/2019
Operation
For models with extendable track width, adjust the desired track
width prior to operation. To do this:
W9212-8235-4 65
03/2019
Operation
Using the dozer control lever (1), adjust the desired track
width.
To decrease the track width from 860 to 700 mm, move the
dozer control lever forward (figure position ).
To increase the track width from 700 to 860 mm, move the
dozer control lever backward (figure position ).
Pull out the lock pin (1) and remove the dozer extension (2).
Use the same procedure for the other side (left or right) as
well as for the adjustment of the track width from narrow to
standard.
For models with extendable track width, adjust the desired track
width prior to operation. To do this:
66 W9212-8235-4
03/2019
Operation
Using the dozer control lever (1), adjust the desired track
width.
To decrease the track width from 990 to 750 mm, move the
dozer control lever forward (figure position ).
To increase the track width from 750 to 990 mm, move the
dozer control lever backward (figure position ).
Pull out the lock pin (1) and remove the dozer extension (2).
Use the same procedure for the other side (left or right) as
well as for the adjustment of the track width from narrow to
standard.
Swivelling the roll-over safety bar upward and downward and locking it
W9212-8235-4 67
03/2019
Operation
Grasp the upper part (5) of the safety bar firmly with both
hands at the highest point possible above the swivel joints.
Driving
Push both drive levers simultaneously forward to drive the excavator straight. Releasing the drive levers
stops the excavator immediately.
To reverse the excavator, pull both drive levers back simultaneously.
(A) Forward
(B) Reverse
68 W9212-8235-4
03/2019
Operation
To drive faster, press the fast drive position button (1) while
driving. When the fast drive position pedal is no longer acti-
vated, the machine automatically returns to the normal drive
position.
Turning
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.
During driving
Pull the left drive lever to neutral, leave the right drive lever
pushed forward.
W9212-8235-4 69
03/2019
Operation
Leave the right drive lever in neutral, push the left drive
lever forward. In this case, the turning radius is determined
by the right track.
70 W9212-8235-4
03/2019
Operation
On streets with a high-friction tarmac, e.g. concrete, do not make sharp turns.
Do not work with the machine on the seashore. (The salt will cause the steel insert to corrode.)
W9212-8235-4 71
03/2019
Operation
Always observe the following safety instructions when working with the excavator.
The maximum track width (standard track width) should also be set before excavation work in order to
ensure maximum stability while working with the machine.
The suitability of the machine for attachments depends on the size, weight and arm attachment (interface).
These factors should be observed by the operator. Various attachments (e.g. light cargo buckets) can only
be used on a restricted basis.
Using a light cargo bucket can, depending on the nature of the bulk material, exceed the tipping load of the
machine.
Never fully extend the cylinders. Always keep a certain safety margin, especially when operating with a
breaker (accessory).
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 soil, do not dig the bucket deeply into the ground. Instead, make relatively shallow slices
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 machine in water, always grease the pins at the bucket and arm with grease until the old
lubricating grease emerges.
When digging with the boom above the dozer, make sure that the boom cylinder does not come into con-
tact with the dozer.
Adhering soil can be shaken off when the bucket is being emptied by moving the cylinder to the end of the
stroke. Should this not suffice, swing out the arm as far as possible and operate the bucket back and forth.
72 W9212-8235-4
03/2019
Operation
To lift the dozer blade, pull the dozer control lever (1) back
(figure position ).
To lower the dozer blade, push the dozer control lever (1)
forward (figure position ).
W9212-8235-4 73
03/2019
Operation
To raise the boom, pull the right control lever back (figure
position ).
To raise the boom, pull the right control lever back (figure
position ).
74 W9212-8235-4
03/2019
Operation
To dump the arm, push the left control lever (1) forward
(figure ).
To crowd the arm, pull the left control lever back (figure
position ).
W9212-8235-4 75
03/2019
Operation
To dump the arm, push the left control lever (1) forward
(figure ).
To crowd the arm, pull the left control lever back (figure
position ).
76 W9212-8235-4
03/2019
Operation
W9212-8235-4 77
03/2019
Operation
78 W9212-8235-4
03/2019
Operation
No person is allowed to stand in the swing area during the movement. Do not move the foot
outside the front part of the boom swing pedal → risk of bruising.
Swing carefully to avoid any contact of the front attachments with adjacent objects.
The auxiliary port pedal (figure below, position 1) can be secured against inadvertent operation
by lowering its rear part. When the boom swing pedal is not in use tilt the rear part of the boom
swing pedal forward.
To swing the boom to the left, press the boom swing pedal
downward onto the front part (figure position ).
W9212-8235-4 79
03/2019
Operation
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. as-
phalt) is removed and can uncontrollably sputter away, personal protective equipment is abso-
lutely to be worn (safety shoes, safety helmet, eye protection, ear protection and if necessary
facial mask).
For auxiliary port specifications, see the "Specifications" section (page 36).
The auxiliary port pedal may only be activated when an implement is attached.
80 W9212-8235-4
03/2019
Operation
The auxiliary port pedal (figure below, position 1) can be secured against inadvertent operation
by tilting it forward. When the auxiliary port pedal is not in use tilt it forward.
The auxiliary port pedal (1) may be locked with the locking
screw (2) for usage with special devices, such as augers
and crushers.
You will find the locking screw, which is part of the standard
equipment, in the tool compartment (page 47).
W9212-8235-4 81
03/2019
Operation
82 W9212-8235-4
03/2019
Operation
Lock the swivel frame and the control levers (page 24, 25).
Reduce the engine speed to idle speed and let the engine
run for approx. 5 minutes to let it cool down.
Turn the starter switch (1) to the STOP position, remove the
key. 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.
Working light
The starter switch is in the RUN position.
Press the working light button (1). Both the working lights
and the instrument lighting are turned on.
W9212-8235-4 83
03/2019
Operation
If necessary, replace the engine oil and hydraulic oil with those of the specified viscosities.
Only use regular diesel fuel with winter additives. Do not mix petrol and diesel fuel.
Check the battery's state of charge (page 107). In case of extremely low temperatures, it may be neces-
sary to remove the battery after work and store it in a heated room.
Check the antifreeze strength in the cooling system (page 99). If necessary, add antifreeze until the protec-
tion ranges from -25 °C to -40 °C.
The excavator must be cleaned after work is finished (page 99). Special attention must be paid to the
crawlers, the front attachments and the piston rods of the hydraulic cylinders. If the excavator is cleaned
with a water jet, it must then be parked in a dry, frost-free and well-ventilated enclosed space.
If necessary, park the excavator on boards or mats in order to prevent freezing to the ground.
Before starting, check if the piston rods of the hydraulic cylinders are free of ice to avoid damage. Also
check if the crawlers are frozen to the ground. If so, do not take the excavator into operation.
Start the engine (page 61). However, make sure to do the following:
Switch the starter switch for approx. 10 seconds (rather than 5 seconds) to the PREHEAT position.
Let the engine warm up for approx. 10 minutes (rather than 5 minutes) at idle speed.
84 W9212-8235-4
03/2019
Operation
Only a vehicle or starting device with a 12V power supply may be used.
The operator must remain seated on the operator's place, the battery jumper cables must be
connected by a second person.
Make the battery accessible, and remove the positive terminal cover.
Start the helping vehicle and let it run at a higher idle speed.
Start the excavator and let it run. Check if the charge lamp turns off after starting.
Disconnect the jumper cable at the frame of the excavator first, and then at the negative terminal of the
helping vehicle.
Disconnect the second jumper cable from the positive terminal of the excavator battery first, and then from
the positive terminal of the helping vehicle.
Refit the positive terminal cover on the excavator battery and install the cover and rubber mat.
If the jumper cables will be required for the next start of the excavator, check the battery and the alterna-
tor's charging circuit, contact skilled personnel, if necessary.
W9212-8235-4 85
03/2019
Operation
You can only stop the engine with the starter switch
when the speed lever is pushed back (idle speed).
The excavator may only be taken back into operation after the malfunction has been eliminated.
86 W9212-8235-4
03/2019
Operation
When refuelling the excavator, smoking, an open flame, or other sources of ignition are not al-
lowed. The danger zone must be marked with signs. A fire extinguisher must be kept at hand in
the danger zone.
Spilled fuel must be bound immediately with an oil binding agent. The contaminated oil binding
agent must be disposed of in accordance with the applicable environmental regulations.
If no pumping station is available, the diesel fuel may only be stored in approved canisters.
Refuel the excavator in time so that the fuel tank is not running empty. Air in the fuel system can
damage the fuel injection pump.
To bleed the fuel system, move the starter switch to the RUN position.
The electrical fuel pump will bleed the fuel system automatically within approx. 60 s.
If the bleeding was insufficient, the engine will stop again. In this case repeat the procedure.
W9212-8235-4 87
03/2019
Operation
Defective fuses may only be replaced with fuses of the same type and same rating.
If the malfunction can not be remedied by replacing the fuse, or if the fuse blows again when
starting, contact skilled personnel.
Open the fuse box (1) and replace the defective fuse.
10 A
Working light, horn
5A
Time meter, fuel pump, indicators, control
5A
Timer relay
15 A
Engine stop solenoid
88 W9212-8235-4
03/2019
Operation
To close, pull up the lever (1) at the mounting (2), then flip
the engine hood forward until it snaps in.
When replacing the bucket, make sure to wear an eye protection, a helmet and protective gloves.
During attaching and detaching, chippings and burrs may occur at the bolts or bushings. These
may cause severe injuries.
Never use your fingers for the alignment of the components (link, bucket, arm). The components
may sever your fingers by uncontrolled movements.
W9212-8235-4 89
03/2019
Troubleshooting
TROUBLESHOOTING
The troubleshooting section includes only malfunctions and incorrect operations which must be remedied by
the operator. Any other malfunctions may only be eliminated by trained personnel. The troubleshooting must be
performed with the aid of the troubleshooting table. In order to locate a malfunction, first look in the
MALFUNCTION column for the corresponding excavator malfunction. In the POSSIBLE CAUSE column you
will find the possible causes for the malfunction. The REPAIR column indicates the required remedial measure.
If the fault can not be remedied by the measure indicated in the REPAIR column, consult trained personnel.
In order to resolve malfunctions related to the operation, use or maintenance of the exhaust
purification system, implement the measures immediately in accordance with the troubleshooting
table.
The operator is not allowed to open the electrical and hydraulic system. These services are reserved for trained
personnel.
During troubleshooting, the safety on and around the excavator must always be ensured.
If troubleshooting of the excavator calls for the bucket being raised, the operator may not stand in the area of
the front attachments unless the front attachments are secured against inadvertent lowering by suitable
measures.
Start-up
No function available when the Main fuse defective Replace the main fuse (page 88).
starter switch is turned to the RUN
position
Indicator lights do not come on as Defective fuse Replace the fuses (page 88).
expected when the starter switch is
turned to the RUN position
Starter does not turn when the Battery depleted Charge the battery (page 108).
starter switch is turned to the Jump-start the excavator
START position (page 85).
Engine does not start when the Air in the fuel system Check the fuel system for leaks
starter switch is turned to the and bleed it (page 87).
START position, but starter turns Water in the fuel system Check the water separator for
water content, drain if necessary
(page 58).
90 W9212-8235-4
03/2019
Troubleshooting
Troubleshooting: Operation
Operation
Exhaust gas colour very black Air filter restricted Check and clean the air filter
(page 104).
Insufficient engine power Air filter restricted Check and clean the air filter
(page 104).
Fuel filter restricted or water in fuel Check the water separator for
system water content, drain if necessary
(page 58), replace the fuel filter
(page 105).
Coolant temperature too high Radiator dirty Clean the radiator (page 100).
(overheated) Low coolant level Check the coolant level, add cool-
ant, if necessary (page 99).
Cooling system components leak- Check the cooling system for
ing leaks. Please contact your
KUBOTA dealer.
V-belt too loose Check and adjust the V-belt ten-
sion (page 100).
Charge lamp lights up V-belt too loose Check and adjust the V-belt ten-
sion (page 100).
Defective fuse in fuse box Replace the fuses (page 88).
Deviation in driving direction of Crawler tension adjusted incorrect- Check and adjust the crawler
excavator ly tension, if necessary (page 112).
Power of hydraulic functions is too Hydraulic oil level too low Check hydraulic oil level and top
low or disruptive up, if necessary (page 106).
Suction filter restricted Change the hydraulic oil tank
suction filter. Please contact your
KUBOTA dealer.
Horn and working light do not work Defective fuse in fuse box Replace the fuses (page 88).
W9212-8235-4 91
03/2019
Troubleshooting
Engine may be
Stop the engine defective. Immedi-
Red Oil pressure too low.
immediately. ately contact skilled
personnel.
Check the V-belt.
Faulty battery charger When the V-belt is If the indicator does
Red circuit. OK, let the engine not go out, contact
Charging error. run until indicator skilled personnel.
goes out.
Park the machine
at a safe location Check the cooling
and allow the system for leaks.
Coolant temperature engine to continue Check coolant level.
Red
too high. idling. Turn off the Check the V-belt
engine only after it tension. Check the
has idled about 5 radiator for dirt.
min.
92 W9212-8235-4
03/2019
Maintenance
MAINTENANCE
The "Maintenance" section includes all care and maintenance tasks to be performed on the excavator.
A careful maintenance of the excavator will guarantee functional safety and longer service life.
Neglect of the servicing will void the warranty and any liability by KUBOTA.
Only use spare parts that are recommended by the manufacturer. Non-approved spare parts of inferior quality
or wrong classification result in an increased risk of accidents. Operators using non-approved spare parts are
fully responsible for any damage arising thereof.
The machine’s engine features an exhaust purification system. In order to maintain the emission performance,
operate, use and service the engine according to the following provisions:
Service the engine according to the service intervals defined in these operating instructions.
Replace the components associated with the engine in accordance with the intervals defined in these
operating instructions.
Maintenance, cleaning and care activities may only be carried out if the excavator is fully shut down. the
excavator must be secured against starting by removal of the key. The bucket must always be lowered to
the ground for servicing.
When defects are detected during servicing or maintenance, the excavator may only be operated after the
defects are remedied. Repairs may only be carried out by trained personnel.
When carrying out maintenance and care activities, always make sure that the excavator is secured and
stable.
When working on the fuel system, smoking, open flames and the operation of other ignition sources are
not allowed. The danger zone has to be clearly marked with signs. A fire extinguisher must be kept at hand
in the danger zone.
All waste materials must be discarded in accordance with environmental protection regulations.
Use the maintenance and care materials listed in the "Recommended lubricants" section (page 117).
When working on the electrical system, disconnect it from the voltage source before starting the work. The
work may only be carried out by technicians with electrical training.
Always use a ladder or a scaffold if the work cannot be reached by the operator.
The controls may only be used while the operator is sitting on the operator's seat.
W9212-8235-4 93
03/2019
Maintenance
Personnel requirements
The operator may only carry out cleaning and care activities.
94 W9212-8235-4
03/2019
Maintenance
1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.
W9212-8235-4 95
03/2019
Maintenance
1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.
96 W9212-8235-4
03/2019
Maintenance
1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.
2.) When using a breaker over 20% → every 800 h.
When using a breaker over 40 % → every 400 h.
When using a breaker over 60 % → every 300 h.
When using a breaker over 80 % → every 200 h.
3.) When using a breaker up to 50% → every 200 h.
When using a breaker over 50% → every 100 h.
4.) Earlier if necessary.
W9212-8235-4 97
03/2019
Maintenance
1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.
2.) When using a breaker over 20% → every 800 h.
When using a breaker over 40 % → every 400 h.
When using a breaker over 60 % → every 300 h.
When using a breaker over 80 % → every 200 h.
3.) When using a breaker up to 50% → every 200 h.
When using a breaker over 50% → every 100 h.
4.) Earlier if necessary.
98 W9212-8235-4
03/2019
Maintenance
Before cleaning, shut down the engine and secure it against starting.
If a steam cleaner is used for cleaning the excavator, do not direct the steam jet at electric com-
ponents.
Do not direct a water jet into the intake opening of the air filter.
The excavator may only be washed at suitable places (using oil and grease separators).
The excavator can be cleaned with water and a commercial cleaning agent. Make sure no water gets into the
electrical system.
Maintenance
Adhere to the instructions for regular servicing to keep the excavator in good condition.
Check the antifreeze content with an antifreeze tester that is qualified for -25 °C.
W9212-8235-4 99
03/2019
Maintenance
Clean the radiator (1) from the engine side with a water jet
or with compressed air. Do not use high-pressure cleaners.
Check all hose connections to the engine, coolant expansion reservoir and the radiator for condition (cracks,
bulges, hard spots) and firm seating of the clamps. If necessary, have the hoses replaced by trained personnel.
100 W9212-8235-4
03/2019
Maintenance
The engine oil change must be carried out while the engine is warm.
Caution: the engine oil and the oil filter are very hot → risk of scalding!
Place an oil pan with a capacity of about 5 L under the engine oil drain. The engine oil should not
be allowed to seep into the earth and it must be discarded like the oil filter in accordance with the
applicable environment protection regulations.
Remove the oil drain plug (1) and let the engine oil drain
into the oil drain pan. Install the oil drain plug using a new
seal.
Place an oil drain pan under the oil filter and remove the oil
filter (1) with a filter wrench by turning it anticlockwise.
Coat the sealing ring of the new oil filter with engine oil.
Install and tighten the oil filter by hand. Do not use the filter
wrench.
W9212-8235-4 101
03/2019
Maintenance
Unscrew the oil filler cap (1) and fill engine oil. See the
"Recommended lubricants" section (page 117).
Let the engine run for approx. 4 minutes and then stop it.
Check the oil level after 5 minutes.
Pull out the oil dipstick (1) and wipe it with a clean cloth.
Insert the oil dipstick completely and pull it out again. The oil level should be in the "A" area. If the oil level
is too low, add engine oil.
When the oil level is too high or too low, the engine might get damaged during operation.
When changing the engine oil, fill engine oil up to the maximum of the "A" area.
102 W9212-8235-4
03/2019
Maintenance
Open the central coolant drain plug (1) and drain the cool-
ant completely.
Let the engine idle for about 5 min, shut it off and check the coolant level in the radiator. The coolant
should reach the FULL mark; if not, add coolant.
W9212-8235-4 103
03/2019
Maintenance
Pull the outer filter element (2) out of the air filter case (6)
and check it for dirt.
Clean the air filter case and cover without removing the
inner filter element (1). Remove the inner filter element only
when replacing it.
The internal filter element must only be replaced by skilled personnel in the framework of the corresponding
service period.
For the replacement, pull the internal filter element out and immediately insert a new filter element.
Do not clean the filter element with fluids. Never operate the engine without the air filter ele-
ments.
Insert the outer air filter element and the cover with the TOP
mark facing up. Then lock the braces.
104 W9212-8235-4
03/2019
Maintenance
Remove the filter cup retainer (4) while holding the filter cup
(3).
Replace the fuel filter (2) and the sealing rings (1).
Assemble the components in the order shown in the figure above. Tighten the filter cup retainer (4) by
hand. Do not use a tool.
Bleed the fuel system (page 87). Check the water separator for leaks at the same time.
W9212-8235-4 105
03/2019
Maintenance
This service may only be carried out after the hydraulic oil has cooled down.
106 W9212-8235-4
03/2019
Maintenance
Battery acid is very caustic. Avoid contact with battery acid under all circumstances. If clothing,
skin or eyes have come in contact with battery acid, rinse the affected parts immediately with
water. If the eyes are affected, immediately seek medical attention! Neutralise spilled battery acid
immediately.
When servicing a battery, always wear rubber gloves and eye protection.
Open the engine hood (page 89). Always close the engine hood after the work is done.
Battery service
Check the battery (1) for tightness, tighten with nuts (3 and
4), if necessary.
W9212-8235-4 107
03/2019
Maintenance
Charge batteries only in sufficiently ventilated rooms. Smoking, uncovered lights or fire are not
allowed in these rooms.
Explosive gas is created when charging batteries. Open flames can cause an explosion.
Remove the fill caps when charging batteries that are virtually empty. Leave the fill caps inside
(not empty) batteries that are only charged for maintenance purposes, the fill caps can stay in the
batteries.
The battery can only be charged if the starter switch is in the STOP position and the key re-
moved.
If the battery is charged when installed in the vehicle, the engine compartment cover must be left
open during the charging procedure. After the charging procedure is completed, the engine
compartment cover must be left open for ventilation for about 1 hour prior to start-up. → Risk of
explosion.
Remove the negative terminal cover and take off the cable clamp. Put the clamp to the side so that contact
with the negative terminal is excluded.
Connect the battery charger to the battery according to the regulations of the charger manufacturer.
Choose the normal (gentle) charging method.
Clean the battery after charging and replenish the electrolyte, if necessary.
Check the acid density with a hydrometer. The acid density should be between 1.24 and 1.28 kg/L. If the
acid density differs considerably among the individual cells of a battery, the battery probably has a defect.
Check the affected battery with a battery tester and contact trained personnel.
108 W9212-8235-4
03/2019
Maintenance
When disconnecting and connecting the battery, always observe the specified order. → Risk of
short circuit!
Remove the negative terminal cover and take off the cable clamp. Put the clamp to the side so that contact
with the negative terminal is excluded.
Remove the plus terminal cover and take off the cable clamp. Put the clamp to the side so that contact with
the positive terminal is excluded.
Remove the battery retainer and lift the battery out of the swivel frame.
When replacing the battery, always install a battery of the same type with the same power rating
and the same dimensions.
Before installation, cover the battery terminals and cable clamps with petroleum jelly.
Install the battery in the swivel frame and fasten it with the battery retainer. Check the battery for tightness.
→ Do not operate the excavator with a loose battery.
Connect the positive cable clamp to the positive terminal (+) of the battery, install the positive terminal
cover.
Connect the negative terminal (-) of the battery, install the negative terminal cover.
Lubrication
W9212-8235-4 109
03/2019
Maintenance
Fill grease through the grease nipple (1) with a grease gun.
Grease at each 90° position of the swivel gear. Fill approx. 50 g of grease (20-30 shots with the
grease gun). See the "Recommended lubricants" section (page 117).
Operate the excavator and swivel the swivel frame 360° several times in succession to distribute the
grease evenly.
When moving the swivel frame, make sure no person or material is in the swivel area. Turn the
starter switch to the STOP position and remove the key before the next greasing procedure.
110 W9212-8235-4
03/2019
Maintenance
Fill grease through the grease nipple (1) with a grease gun.
Grease at each 90° position of the pitch bearing. Using the grease gun, apply 20 shots at every
position. See the "Recommended lubricants" section (page 117).
Operate the excavator and swivel the swivel frame by 90° several times. After greasing, swivel the swivel
frame 360° several times to distribute the grease evenly.
When moving the swivel frame, make sure no person or material is in the swivel area. Turn the
starter switch to the STOP position and remove the key before the next greasing procedure.
Lubricate all grease points (1) with grease until fresh grease
emerges. See the "Recommended lubricants" section
(page 117).
W9212-8235-4 111
03/2019
Maintenance
If the crawlers are too loose, wear is increased and the crawlers may come off.
Lower the dozer blade to the ground and raise the excava-
tor until the dozer blade touches the ground.
Lower the front attachments onto the ground and raise the
excavator about 200 mm off the ground.
Support the excavator with appropriate backing material, observing the vehicle weight.
The crawler seam (1) is half way between the idler and
sprocket.
Caution: The area around the rotating crawler must be free of persons. Turn the starter switch to
the STOP position after turning and remove the key.
112 W9212-8235-4
03/2019
Maintenance
Cautiously unscrew the pressure valve (2) and loosen the crawler.
Lubricate the u-joint (1) below the plate (2) with grease. See
the "Recommended lubricants" section (page 117).
Check all accessible electric cables, connectors and connections for condition and security.
Check the fuse box and fuse holders for oxidation and dirt, clean if necessary.
W9212-8235-4 113
03/2019
Maintenance
Check all fuel lines and hoses at the engine, fuel reservoir and fuel filter for condition (cracks, bulges, hard
spots) and firm seating of the connections. If necessary, have the lines and hoses replaced by trained per-
sonnel.
114 W9212-8235-4
03/2019
Maintenance
Nm (kgf•m)
4 T (4.6) 7 T (8.8) 9 T (9.8-10.9)
7.8~9.3 9.8~11.3 12.3~14.2
M6
(0.8~0.95) (1.0~1.15) (1.25~1.45)
17.7~20.6 23.5~27.5 29.4~34.3
M8
(1.8~2.1) (2.4~2.8) (3.0~3.5)
39.2~45.1 48.1~55.9 60.8~70.6
M 10
(4.0~4.6) (4.9~5.7) (6.2~7.2)
62.8~72.6 77.5~90.2 103.0~117.7
M 12
(6.4~7.4) (7.9~9.2) (10.5~12.0)
107.9~125.5 123.6~147.1 166.7~196.1
M 14
(11.0~12.8) (12.6~15.0) (17.0~20.0)
166.7~191.2 196.1~225.6 259.9~304.0
M 16
(17.0~19.5) (20.0~23.0) (26.5~31.0)
333.4~392.3 367.7~431.5 519.8~568.8
M 20
(34.0~40.0) (37.5~44.0) (53.0~58.0)
Size Torque in Nm
13-20 3.5
15-24 3.5
22-32 3.5-5
26-38 3.5-5
40-60 3.5-5
38-50 3.5-5
50-65 3.5-6
68-85 3.5-6
W9212-8235-4 115
03/2019
Maintenance
116 W9212-8235-4
03/2019
Maintenance
Recommended lubricants
W9212-8235-4 117
03/2019
Maintenance
118 W9212-8235-4
03/2019
Maintenance
If repairs are carried out on load supporting parts, for example welding on frame parts, the work has to be
checked by a qualified person.
After repairs, the machine should be operated only if it is functioning properly. For this check particular attention
must be paid to the repaired parts and the safety devices.
W9212-8235-4 119
03/2019
Safety inspection
SAFETY INSPECTION
All safety inspections are based on the national worker's protection regulations, safety regulations and technical
specifications applicable to the country where the machine is deployed.
The operator (page 13) should arrange for the safety inspections to be performed at specified intervals accord-
ing to national rules and regulations.
Based on their technical training and experience, the qualified personnel should have sufficient knowledge in
the domain of the machine described here and be familiar with the applicable national work safety regulations,
accident prevention regulations and the generally accepted technical rules so that they can assess the safe
condition of the machine.
The qualified person must keep his appraisal and evaluation neutral and must not be influenced by personal,
economic or operational interests. The inspection is a visual and functional check of all components for condi-
tion and completeness and of the effectiveness of the safety devices.
The performance of the inspection must be documented as an inspection report containing at least the follow-
ing information:
The owner/employer (company) is responsible for the observance of the inspection intervals. The acknowl-
edgement and the elimination of the determined faults must be confirmed by the owner/employer in writing,
along with the date, in the inspection report.
The inspection report must be kept on file at least until the next inspection.
120 W9212-8235-4
03/2019
Taking out of service and storage
When taking the excavator out of service, secure it against unauthorised use.
Storage conditions
The storage place must have a sufficient bearing capacity for the weight of the excavator.
Check the hydraulic oil level, add oil if necessary (page 57).
Remove the battery (page 109) and store it in a dry and frost-free room. If necessary, connect it to a trickle
charger.
Check the antifreeze strength of the coolant, add coolant if necessary (page 99).
W9212-8235-4 121
03/2019
Taking out of service and storage
Check the hydraulic oil for condensate water, replacing the oil if necessary.
Carry out pre-operational services (page 55). If defects are detected whilst starting the machine, the exca-
vator may only be started up after the defects have been repaired.
If the safety inspection is due while the vehicle has been taken out of service, the inspection must be per-
formed before start-up.
Start the engine (page 61). Run the excavator at idle and check all functions.
122 W9212-8235-4
03/2019
Lifting capacity of the excavator
The lifting capacity is measured at the front pin part of the arm with the arm fully extended. The boom
cylinder is the operating cylinder.
As well as the lifting conditions, the length of the arm also affects the permitted lifting capacities and the
stability of the machine. Compare the dimensions of the machine arm with the details given in the lifting
capacity tables, in order to use the correct lifting capacity table for your machine.
Dimensions for the arm, see table "Arm version" in the section "Dimensions" (page 34).
Do not lift loads which exceed the values indicated in the lifting capacity tables.
The values given in the tables apply only to level and hard grounds. When working on soft
ground, the machine can tip over easily, as the load is concentrated on one side only and the
track or the dozer can dig into the ground.
The values given in the tables apply only for loads without bucket. If a bucket is used, the weight
of the bucket must be subtracted from the values in the tables. The weight of mounted accesso-
ries (e.g. breaker) must be subtracted from the lifting capacity.
Always observe the maximum permissible lifting capacity of the hoisting gear (e.g. load hooks).
The lifting of loads over the maximum permissible lifting capacity is not allowed.
During lifting operations, the boom may not be swivelled to the left or right. The machine could
tilt! To avoid accidental operation, fold down the rear part of the boom swing pedal.
W9212-8235-4 123
03/2019
Lifting capacity of the excavator
Use utmost care to avoid any risk of tipping, slipping, or other potential risks implied when lifting loads.
The operator must
124 W9212-8235-4
03/2019
Lifting capacity of the excavator
W9212-8235-4 125
03/2019
Lifting capacity of the excavator
Lifting capacity over front end, dozer blade down
MODEL K008-3 SPECIFICATION RUBBER CRAWLER
ARM 890 mm
kN (t)
HEIGHT of LIFT POINT RADIUS (mm)
LIFTING
Mini- Maxi-
CAPACITY 1500 2000 2500
mum mum
[mm]
4500
4000
3500
3000
2500
1.9
2000
(0.20)
1.8
1500
(0.18)
2.4 2.0 1.7
1000
(0.24) (0.21) (0.17)
3.4 2.3 1.7 1.5
500
(0.34) (0.23) (0.17) (0.15)
6.0 3.4 2.2 1.5
GL 0
(0.61) (0.35) (0.23) (0.16)
4.9 2.9 1.9
-500
(0.50) (0.30) (0.20)
3.6 2.1 1.3
-1000
(0.37) (0.22) (0.13)
-1500
-2000
-2500
2500
1.5
2000
(0.15)
1.5
1500
(0.15)
2.3 1.5 1.0
1000
(0.24) (0.15) (0.10)
2.1 1.4 1.0 0.9
500
(0.22) (0.14) (0.10) (0.09)
3.8 2.0 1.3 1.0
GL 0
(0.39) (0.20) (0.14) (0.10)
3.8 1.9 1.3
-500
(0.39) (0.20) (0.13)
3.6 2.0 1.3
-1000
(0.37) (0.20) (0.13)
-1500
-2000
-2500
Please note the model name and operating weight on the type plate (page 38).
126 W9212-8235-4
03/2019
Lifting capacity of the excavator
Lifti ng capacity over fr ont end, doz er bl ade down
3000
2500
1.7
2000
(0.17)
1.8 1.7
1500
(0.18) (0.17)
2.9 2.2 1.8
1000
(0.29) (0.22) (0.18)
4.1 2.5 1.8 1.4
500
(0.42) (0.26) (0.19) (0.14)
3.8 2.5 1.7
GL 0
(0.39) (0.25) (0.18)
5.6 3.2 2.1 1.5
-500
(0.57) (0.32) (0.22) (0.15)
2.4 1.6
-1000
(0.25) (0.17)
-1500
-2000
-2500
2500
1.7
2000
(0.17)
1.7 1.2
1500
(0.17) (0.12)
2.6 1.6 1.1
1000
(0.26) (0.16) (0.12)
2.3 1.5 1.1 0.9
500
(0.24) (0.16) (0.11) (0.09)
2.2 1.5 1.1
GL 0
(0.22) (0.15) (0.11)
4.5 2.2 1.4 1.0
-500
(0.46) (0.22) (0.15) (0.11)
2.2 1.4
-1000
(0.22) (0.15)
-1500
-2000
-2500
Please note the model name and operating weight on the type plate (page 38).
W9212-8235-4 127
03/2019
Accessories
ACCESSORIES
The accessories approved for this excavator by the respective countries are described in the following seg-
ments. For further accessories, please contact your KUBOTA dealer or authorized retailer.
Accessories from other manufacturers may only be fitted after prior written approval from
KUBOTA. See also the "Approved use" section (page 13).
The size, weight and arm bracket of the excavator are important factors in the selection of at-
tachments. These factors must be made known to the attachment manufacturer when ordering
attachments, and be observed by the operator when operating the excavator. Various attach-
ments are nevertheless of limited use only.
128 W9212-8235-4
03/2019
Accessories
W9212-8235-4 129
03/2019