Kubota KX91-3a2, U35-3a2, KX101-3a2 Operator's Manual
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The content of this documentation does not constitute part of a previous agreement, promise or legal
relationship, nor shall it constitute an amendment thereof. All responsibilities arise of the respective sales
contract containing the complete and exclusively valid contractual warranty. See the "Duties, liability and
warranty" section (page 13). 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
expressly approved by the manufacturer. Violators of the above terms are liable for compensation for damages.
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Table of contents
Abbreviations...................................................................................................................................................... 8
General symbols ................................................................................................................................................9
GENERAL INFORMATION ............................................................................................................... 10
Foreword .......................................................................................................................................................... 10
Manufacturer .................................................................................................................................................... 10
EC declaration of conformity ............................................................................................................................11
Date of issue of operator's manual................................................................................................................... 11
Operating personnel......................................................................................................................................... 11
Location of the operator's manual....................................................................................................................12
SAFETY RULES ............................................................................................................................... 13
Basic safety instructions................................................................................................................................... 13
Responsibilities, liability and warranty.............................................................................................................. 13
Safety symbols ................................................................................................................................................. 15
Approved use ................................................................................................................................................... 16
Unapproved use ............................................................................................................................................... 16
Special duties of the owner ..............................................................................................................................16
Safety labels on the excavator ......................................................................................................................... 17
Safety devices ..................................................................................................................................................22
Locking the controls .................................................................................................................................... 22
Engine stop knob.........................................................................................................................................22
Emergency hammer....................................................................................................................................23
Hazards coming from the hydraulic system ..................................................................................................... 23
Combating fire .................................................................................................................................................. 23
RECOVERY, LOADING AND TRANSPORT..................................................................................... 24
Safety rules for recovery ..................................................................................................................................24
Safety rules for hoisting the excavator with a crane......................................................................................... 24
Safety rules for transport .................................................................................................................................. 25
Recovery .......................................................................................................................................................... 25
Hoisting the excavator with a crane ................................................................................................................. 26
Transport on a flat bed trailer ........................................................................................................................... 27
DESCRIPTION OF THE EXCAVATOR............................................................................................. 29
Model overview ................................................................................................................................................29
Model KX91-3α2 ......................................................................................................................................... 29
Model KX101-3α2 ....................................................................................................................................... 29
Model U35-3α2 ...........................................................................................................................................30
Dimensions....................................................................................................................................................... 31
Dimensions for the KX91-3α2/KX101-3α2/U35-3α2 ..................................................................................31
Specifications ................................................................................................................................................... 33
Specifications for the KX91-3α2/101-3α2/U35-3α2....................................................................................33
Identification of the excavator...........................................................................................................................35
Equipment ........................................................................................................................................................ 35
Standard equipment.................................................................................................................................... 35
Accessories ................................................................................................................................................. 35
Long arm ................................................................................................................................................ 36
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Pipe safety valve ....................................................................................................................................36
Note on the usage .............................................................................................................................37
ASSEMBLY AND FUNCTIONS .........................................................................................................38
Component overview ........................................................................................................................................38
Driver's place ....................................................................................................................................................39
Right control console ...................................................................................................................................39
Description of the components of the right control console ...................................................................40
Displays and indicators - description......................................................................................................41
Left control console......................................................................................................................................41
Description of the components of the left control console......................................................................42
Controls .......................................................................................................................................................42
Description of the controls......................................................................................................................42
Further components in the cab....................................................................................................................44
Wiper/washer system .............................................................................................................................44
Interior lighting ........................................................................................................................................44
Fuse box.................................................................................................................................................44
Main battery............................................................................................................................................45
Tool compartment...................................................................................................................................45
Cup holder ..............................................................................................................................................45
Fuel tank filler opening......................................................................................................................................46
Engine compartment.........................................................................................................................................47
Hydraulic system ..............................................................................................................................................48
OPERATION......................................................................................................................................49
Safety rules for operation..................................................................................................................................49
Guiding the operator....................................................................................................................................50
Working in the vicinity of overhead power lines ..........................................................................................50
Working in the vicinity of underground power lines .....................................................................................50
Initial operation..................................................................................................................................................51
Setting the display language .......................................................................................................................51
Running-in of the excavator.........................................................................................................................51
Special maintenance instructions................................................................................................................51
Operating the excavator ...................................................................................................................................52
Pre-operational services..............................................................................................................................52
Check the engine oil level.......................................................................................................................52
Checking the coolant level......................................................................................................................52
Checking the radiator and the oil cooler.................................................................................................53
Checking the V-belt ................................................................................................................................53
Checking the exhaust system for leaks..................................................................................................53
Checking the oil level of the hydraulic system........................................................................................54
Checking the water separator of the fuel system ...................................................................................54
Lubrication ..............................................................................................................................................55
Checking the fuel level of the fuel tank...................................................................................................57
Setting up the workplace .............................................................................................................................57
Mounting the excavator ..........................................................................................................................57
Adjusting the driver's seat ......................................................................................................................57
Horizontal seat adjustment (seat stand-off) ......................................................................................58
Spring adjustment (driver's weight) ...................................................................................................58
Seat height adjustment (knee height) ...............................................................................................58
Backrest adjustment..........................................................................................................................58
Horizontal seat adjustment (seat stand-off) - U35-3α2 .....................................................................59
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Spring adjustment (driver's weight) - U35-3α2 .................................................................................59
Backrest adjustment - U35-3α2 ........................................................................................................ 59
Tilting the driver's seat - U35-3α2..................................................................................................... 60
Seat belt............................................................................................................................................60
Exterior mirror adjustment................................................................................................................. 60
Safety instructions for starting the engine...................................................................................................61
Starting the engine ...................................................................................................................................... 61
Stopping the engine .................................................................................................................................... 62
Observation of the displays after starting and during operation .................................................................63
Driving the excavator................................................................................................................................... 64
Driving ....................................................................................................................................................65
Turning ................................................................................................................................................... 66
During driving....................................................................................................................................66
From a standing position................................................................................................................... 66
Turning on the spot ........................................................................................................................... 67
Driving uphill and downhill......................................................................................................................67
Hints for rubber crawler operation.......................................................................................................... 68
Making sharp turns ...........................................................................................................................68
Protecting the crawler against salt.................................................................................................... 68
Operating the controls during excavation work........................................................................................... 68
Notes for using wider and deeper buckets.................................................................................................. 69
Operating the dozer ............................................................................................................................... 69
Overview of control lever functions ........................................................................................................ 70
Operating the boom ............................................................................................................................... 70
Operating the arm ..................................................................................................................................71
Operating the bucket.............................................................................................................................. 72
Swivelling the swivel frame ....................................................................................................................72
Swinging the boom................................................................................................................................. 73
Operating the service port........................................................................................................................... 74
Flow rate setting................................................................................................................................75
Preference......................................................................................................................................... 75
Fine-tuning the limited oil flow........................................................................................................... 76
Setting............................................................................................................................................... 76
Return change valve ..............................................................................................................................79
Placing out of operation.................................................................................................................................... 79
Cab version only .................................................................................................................................... 80
Operating the wiper/washer system................................................................................................................. 80
Switching on the windscreen wiper.............................................................................................................80
Switching on the washer system................................................................................................................. 80
Operating the room light (cab version)............................................................................................................. 81
Operating the rotary beacon............................................................................................................................. 81
Charging plug..............................................................................................................................................81
Operating the heater (cab version) ..................................................................................................................82
Opening and closing the cab door ...................................................................................................................83
Opening the cab door from outside.............................................................................................................83
Closing the cab door ................................................................................................................................... 83
Opening the cab door from inside...............................................................................................................83
Opening and closing the windows.................................................................................................................... 84
Front window...............................................................................................................................................84
Side window ................................................................................................................................................85
Operating the working lights.............................................................................................................................85
Cold weather operation ....................................................................................................................................85
Necessary preparations prior to the winter season..................................................................................... 85
Operation during the winter season ............................................................................................................ 86
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Jump-starting the excavator .............................................................................................................................86
Emergency stop functions ................................................................................................................................87
Manual engine stop .....................................................................................................................................87
Manual lowering of the boom ......................................................................................................................87
Filling up the washer system ............................................................................................................................88
Filling up the excavator.....................................................................................................................................88
Bleeding the fuel system...................................................................................................................................88
Replacing the fuses ..........................................................................................................................................89
Fuse layout of the fuse box .........................................................................................................................90
Installing and uninstalling the driver's seat .......................................................................................................90
Opening and closing the engine compartment cover .......................................................................................91
Removing and installing the left engine compartment cover............................................................................91
Opening and closing the valve chamber cover.................................................................................................91
Replacing the bucket ........................................................................................................................................92
Anti-theft system ...............................................................................................................................................93
Black (individual) key...................................................................................................................................93
Red key (for registering) ..............................................................................................................................93
The key system............................................................................................................................................93
Registering a black key for the machine......................................................................................................94
TROUBLESHOOTING.......................................................................................................................96
Safety rules for troubleshooting ........................................................................................................................96
Troubleshooting: pre-operational services .......................................................................................................96
Troubleshooting: operation...............................................................................................................................97
Troubleshooting: display indications.................................................................................................................98
MAINTENANCE.................................................................................................................................99
Safety rules for maintenance............................................................................................................................99
Personnel requirements....................................................................................................................................99
General maintenance chart: 50 to 500 hours of operation ............................................................................ 100
General maintenance chart: 550 to 1000 hours of operation........................................................................ 101
Servicing maintenance chart: 50 to 500 hours of operation .......................................................................... 102
Servicing maintenance chart: 550 to 1000 hours of operation...................................................................... 103
Cleaning the excavator .................................................................................................................................. 104
Servicing ........................................................................................................................................................ 104
Re-filling the coolant ................................................................................................................................. 104
Cleaning the radiator ................................................................................................................................ 105
Checking and adjusting the V-belt tension ............................................................................................... 105
Checking the coolant hoses ..................................................................................................................... 106
Replacing the engine oil and oil filter........................................................................................................ 106
Draining the engine oil......................................................................................................................... 106
Replacing the oil filter .......................................................................................................................... 107
Filling in engine oil ............................................................................................................................... 107
Replacing the coolant ............................................................................................................................... 108
Checking and cleaning the air filter .......................................................................................................... 109
Replacing the fuel filter ............................................................................................................................. 110
Cleaning the water separator ................................................................................................................... 110
Emptying the fuel reservoir....................................................................................................................... 111
Replacing the return filter in the hydraulic oil tank.................................................................................... 111
Replacing the suction filter in the hydraulic oil tank.................................................................................. 113
Replacing the filter inside the pilot control circuit ................................................................................ 113
Replacing the in-line filter ......................................................................................................................... 114
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Draining and topping up hydraulic oil........................................................................................................ 114
Draining the hydraulic oil......................................................................................................................115
Filling in hydraulic oil............................................................................................................................115
Replacing the breather filter in the hydraulic oil tank ................................................................................ 116
Battery service........................................................................................................................................... 116
Checking the battery ............................................................................................................................117
Charging the battery............................................................................................................................. 118
Installing/uninstalling and replacing the battery ................................................................................... 119
Lubrication................................................................................................................................................. 120
Greasing the swivel gear...................................................................................................................... 120
Greasing the pitch bearing................................................................................................................... 120
Checking and tensioning the crawler tension ...........................................................................................121
Adjusting the crawler tension ............................................................................................................... 121
Checking the crawler tension............................................................................................................... 122
Checking the crawler tension (steel).................................................................................................... 123
Replace the drive unit oil........................................................................................................................... 123
Greasing the pilot valve linkage ................................................................................................................124
Checking the electric cables and connections.......................................................................................... 124
Resetting the service period indicator .......................................................................................................124
Checking the bolted joints .............................................................................................................................. 125
Tightening torque for screws..................................................................................................................... 125
Tightening torque for hose clamps............................................................................................................125
Tightening torque for hydraulic hoses.......................................................................................................125
Tightening torque for hydraulic pipes........................................................................................................126
Tightening torque for hydraulic adapters ..................................................................................................126
Recommended lubricants............................................................................................................................... 127
Excavator repairs ...........................................................................................................................................128
Spare parts.....................................................................................................................................................128
SAFETY INSPECTION ................................................................................................................... 129
TAKING OUT OF SERVICE AND STORAGE................................................................................. 130
Safety rules for taking out of service and storage ..........................................................................................130
Storage conditions.......................................................................................................................................... 130
Measures before taking out of service ........................................................................................................... 130
Measures during taking out of service ...........................................................................................................130
Start-up after taking out of service ................................................................................................................. 131
LIFTING CAPACITY OF THE EXCAVATOR................................................................................... 132
EC DECLARATION OF CONFORMITY .......................................................................................... 160
EC declaration of conformity for the KX91-3α2 .............................................................................................161
EC declaration of conformity for the KX101-3α2 ...........................................................................................162
EC declaration of conformity for the U35-3α2................................................................................................163
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Abbreviations
1/min Revolutions per minute
% Percent
° Degree
°C Degrees Celsius
A Ampere
acc. according
approx. approximately
bar Bar
BGR Rules according to the German Accident
Prevention & Insurance Association
CO₂ Carbon dioxide
dB Decibel
e.g. for example (exempli gratia)
GL Ground level
i.e. that is (id est)
incl. including
ISO International Organization for
Standardization
kg Kilogramme
km/h Kilometre per hour
kN Kilo Newton
kV Kilovolt
kW Kilowatt
L Litre
L/min Litres per minute
LpA Noise level inside the cab
LwA Detected sound power level
m Metre
m/s² Metre per square second
m³ Cubic metre
max. maximum
mm Millimetre
MPa Megapascal
N Newton
rad Radius
resp. respectively
s Second
t Ton
V Volt
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General symbols
Warning light
Fuel display
Engine oil display
Charge display
Glow display
Hydraulic oil
Travel speed
Low speed
Swivel boom (left)
Swivel boom (right)
Dozer blade up
Dozer blade down
Lever direction
Control lever direction
Rotary beacon indicator on/off
Display selector switch
Forward travel
Backward travel
Raise boom
Lower boom
Arm out
Arm in
Bucket crowd
Bucket dump
Service port switch
Working light button
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General information
GENERAL INFORMATION
Foreword
This operator's manual applies only to the KUBOTA excavator models KX91-3α2, KX101-3α2 and U35-3α2
which comply with the declaration of conformity.
Safety instructions, and the rules and regulations for the use of excavators given in this operator's manual 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 operator's manual to ensure
safe handling of the equipment,
• to ensure that the operator's manual is 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 operator's manual apply for all models. Any differences are highlighted (e.g. cab version or
KX91-3α2, KX101-3α2, U35-3α2).
The terms "front" and "direction of travel" refer to the view of the
operator when seated on the driver's seat. Forward direction of
travel means that the dozer 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 15).
Manufacturer
The manufacturer of the excavator described in this manual is:
KUBOTA Baumaschinen GmbH Phone: +496332487-0
Steinhauser Straße 100 Fax: +496332487-101
D-66482 Zweibrücken www.kubota-baumaschinen.de
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General information
EC declaration of conformity
With the EC declaration of conformity, KUBOTA Baumaschinen certifies that the excavator is
in conformity with the valid standards and regulations at the time of marketing. The EC
conformity marking is located on the excavator's type plate and it indicates that the abovementioned regulations are met.
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.
Keep the EC declaration of conformity in a safe place and show it, if requested, to the
responsible authorities.
You will find the EC declaration of conformity in the "EC declaration of conformity" section on page 160.
Date of issue of operator's manual
This version of the operating instructions was issued on 04/2007.
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 trade association regulations, only persons 18 years of age 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 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.
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General information
Location of the operator's manual
The operator's manual must always be kept on the excavator. If the operator's manual has become illegible due
to continuous use, the owner (operator) must order a replacement from the manufacturer.
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Safety rules
SAFETY RULES
Basic safety instructions
• The EC machine utilisation directive (89/655/EEC in version 95/63/EC) dated 11/30/1989 and 12/05/1995
applies for the operation of the aforementioned excavator.
• The information in this operator's manual applies for maintenance and repairs.
• National rules and regulations apply where applicable.
Responsibilities, 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.
This operator's manual, 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.
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.
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Safety rules
Warranty and liability
The scope, period and form of the warranty are set forth in the sales and delivery conditions of the
manufacturer. The operator's manual valid at the time of delivery shall be the basis for any warranty claims
arising from errors in the valid operating instructions (page 11). The following applies above 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 this operator's manual,
• insufficiently qualified or insufficiently instructed operating personnel,
• improperly performed repairs,
• use of non-genuine replacement parts,
• 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.
The owner must ensure at his own responsibility that
• the safety rules are observed (page 13),
• unapproved use and unauthorised operation (page 16) are excluded and
• the approved use (page 16) is ensured and the excavator is operated in accordance with the contractual
conditions of use.
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Safety rules
Safety symbols
The following terms and hazard symbols are used in this operator's manual:
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 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, open flames 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 loosening, excavating, picking up,
transporting and dumping earth, rocks and other materials, for work with the dozer or with a hydraulic hammer.
The load may be transported largely without driving the excavator. Do not exceed the maximum lifting capacity.
Approved use also includes:
• the observation of all notes in this operator's manual,
• the exclusive use of genuine replacement parts and accessories, the use of other replacement parts and
accessories is not allowed and may only be used in exceptional cases after obtaining the written
permission of KUBOTA Baumaschinen GmbH.
• 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 this
operator's manual - is considered an unapproved use. This also applies to the non-observance of the standards
and guidelines listed in this operator's manual.
Hazards can occur in case of improper use. Such improper uses are, for example:
• using the excavator to lift loads without suitable load lifting attachments,
• using the excavator for underground works,
• using the excavator to transport persons in the bucket, and
• using the excavator for tearing down walls with the bucket.
Special duties of the owner
Owner of the excavator in the sense of this operator's manual is any natural 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 from operation according to the conditions of the contract between owner and
user of the excavator.
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 this operator's manual.
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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) Code #: RG 308 - 5702-0
Read the operator's manual and make sure you have understood the manual before
starting or operating the excavator.
2) Code #: RG 208-4958-0
Do not touch hot parts, such as exhaust muffler, etc.
3) Code #: bsb 449 350
Before opening the engine compartment cover make sure the engine is stopped.
4) Code #: RG 208-4957-0
Keep away from fan and drive belt.
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Safety rules
5) Code #: RG 5085723-0
Start the engine only from the driver's seat. Do not start the engine by shorting the starter
terminals.
6) Code #: RG208-5727-0
Do not enter the manoeuvring area.
7) Code #: RG 508-5722-0
Do not enter the swivel area.
8) Code #: R 2491-5736-0
9) Code #: 69741-5753-0
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Safety rules
10) Code #: RG 508-5724-0
Radiator: Risk of scalding.
11) Code #: RG138-5791-0
For information about loosening the crawler, consult the operating instructions.
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Safety rules
a) Cab version
b) Canopy version
12) Code #: RG138-5717-0
When using a wider or deeper bucket take good care when swinging or pulling in the front
attachments to make sure that the bucket does not hit the cabin or the canopy.
20
Safety rules
Code #: RG491-5796-0 Code #: RG109-5769-0
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Safety rules
Safety devices
Before starting the excavator, all safety devices must be installed properly and operational. No manipulation 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 shut down
• and secured against restarting (starter switch in STOP position and key switch removed).
• The excavator is equipped with an anti-theft system. The anti-theft system makes it difficult to steal the
machine. However, it can not fully prevent theft.
Locking the controls
The control levers (1 and 3) on the right and left, the drive levers
and the dozer control lever are not operational when the console
(4) is raised. This circumstance allows safe mounting and
dismounting. The console is unlocked and raised with the
control lever lock (2).
The boom swing and the dozer functions are not
secured by the control lever lock.
Engine stop knob
If the electrical system fails, the engine can be shut off manually.
To stop the engine:
• Push the lever (1) upwards until the engine is stopped.
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Safety rules
Emergency hammer
In case of an accident where the excavator cab door and
windows can not be opened, the operator can break the window
panes with the emergency hammer (1).
When breaking the window pane, close your eyes
and cover them with an arm.
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 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.
Combating fire
In the event of fire in the electrical or hydraulic system, use a CO2 fire extinguisher to combat the fire.
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Recovery, loading and transport
RECOVERY, LOADING AND TRANSPORT
Safety rules for recovery
• For recovery of the excavator, a towing vehicle of at least the same weight class as the excavator must be
used.
• A tow bar must be used for the recovery. If a tow rope is used, a braking vehicle 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 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 tow lug 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 tongue load during recovery, see "Specifications"
(page 33).
Safety rules for hoisting the excavator with a crane
• The lifting gear for hoisting must be suitable for the weight of the excavator.
• 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 the cab roof 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.
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Recovery, loading and transport
Safety rules for transport
• The used 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 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.
• 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.
Observe the applicable traffic rules and regulations.
Recovery
Adhere to the safety rules (page 13) and the safety
rules for recovery (page 24).
A recovery is only allowed over a short distance
and at walking speed.
• Attach the tow bar or tow rope to the tow lug (see figure) on
the excavator and to the towing vehicle. The tow bar should
be mounted at a right angle to the vehicles.
• During the recovery procedure, the operator must be seated in the driver's place.
• Drive slowly with the towing vehicle to avoid abrupt loads.
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Recovery, loading and transport
Hoisting the excavator with a crane
Adhere to the safety rules (page 13) and the safety
rules for hoisting the excavator with a crane
(page 24).
• Bring the excavator to the lifting position (see figure) on
level ground.
• Lift the dozer until the dozer cylinders are fully retracted.
See also the "Operating the controls during excavation
work" section (page 68).
• Bring the boom in line with the longitudinal axis of the swivel frame.
• Completely extend the boom cylinder, arm cylinder and bucket cylinder.
• Swivel the swivel frame so that the dozer is located at the rear.
• Close and lock the door and covers.
• Attach the lifting gear with shackles to the lifting eyes (1) on
each side of the dozer.
• Attach the lifting gear with shackles to the lifting eyes (1) on
each side of the boom.
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Recovery, loading and transport
• Tension the lifting gear slightly with the crane (see figure). If
a cab is fitted, place cloths between the lifting gear and the
cab to protect it.
• 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.
The lifting eyes on the cab are not provided for lifting the excavator. Do not hoist the excavator
with these eyes.
Transport on a flat bed trailer
Adhere to the safety rules (page 13) and the safety
rules for transport (page 25).
• Place the loading ramps on the transport vehicle at an
angle of 10° to 15°. Observe the track width.
• 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
No person is allowed to stand in the loading area during movement. Risk of bruising.
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.
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Recovery, loading and transport
For protecting the vehicle, use the points as shown in the figure.
• 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 with beams (2).
• Secure the excavator against sliding on the transport
vehicle with chocks or chains (note the vehicle weight).
• Lock the excavator after hoisting.
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Description of the excavator
DESCRIPTION OF THE EXCAVATOR
Model overview
The excavator is supplied in three different models – KX91-3α2, KX101-3α2 and U35-3α2. They are supplied
optionally with a canopy or cab.
Model KX91-3α2
Model KX101-3α2
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Description of the excavator
Model U35-3α2
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