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U 1BAABBKAP0850 Code No. RA238-8150-8 17
PRINTED IN JAPAN © KUBOTA Corporation 2008
LIST OF ABBREVIATION
API American Petroleum Institute
ASTM American Society for Testing and Materials, USA
CECE Commitee for European Construction Machinery
DIN German Institute for Standards, Federal Republic of Germany
EN European Standard
Front “Front” means the front view towards the boom and dozer
Hi High speed
ISO International Organization for Standardization
JIS Japanese Industrial Standard
L Volume (Liter)
Lo Low speed
L/min Liter per minute
MIL Military Standards
OPG Operator Protective Guards of Top Guard Level I
(Top Guard Level I)
ROPS Roll-over Protective Structures
rpm Revolutions Per minute
SAE Society of Automotive Engineering
TPSS Two Pattern Selection System
U17 English (U.S.A.) AU . L . 13 - 23 . 3 . AK
The instruments and operation elements have been marked with a series of symbols in order to simplify the operation of your excavator. These symbols are listed below with the respective descriptions.
3 Safety alert Symbol
T Warning lamp “Fuel level too low”
lWarning lamp “Engine Oil pressure”
Warning lamp “Battery charge”
Warning lamp “Auto Idle (AI) Lamp”
Indicator lamp “Glow” 7 Working light switch 5 Horn Z Wiper/Washer switch R Diesel E Hydraulic . uid W Gear oil
Grease j Fast k Slow
Excavator - Overhead movement toward the front
Excavator - Overhead movement toward
the rear æ Boom up … Boom down = Arm up
= Arm crowd
‘ Bucket crowd
“ Bucket dump Boom swing (left) Boom swing (Right) Dozer raise
Operation direction of control lever
Operation direction of control lever
Read operator’s manual
Engine stop control lamp
Lock Unlock Reducing / Increasing track width
You are now the proud owner of a KUBOTA excavator. This excavator is a product of KUBOTA quality engineering and manufacturing. It is made of the .ne materials and under rigid quality control systems. It will give you long, satisfactory service. To obtain the best use of your excavator, please read this manual carefully. It will help you become familiar with the operation of the excavator and contains many helpful hints about excavator maintenance. It is KUBOTA’s policy to utilize as quick as possible every advance in our research. The immediate use of new techniques in the manufacture of products may cause some small parts of this manual to be outdated. KUBOTA distributors and dealers will have the most up-to-date information. Please do not hesitate to consult with them.
3 SAFETY FIRST
This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to assemble or use this unit.
3DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in death or
3WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in death or serious
3CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
IMPORTANT : Indicates that equipment or property damage
could result if instructions are not followed.
NOTE : Gives helpful information.
3 SAFE OPERATION ..................... 1
DEALER SERVICE ...........................13
TECHNICAL DATA ...........................14
DESCRIPTION OF MACHINE PARTS .........................15
INSTRUMENT PANEL AND CONTROL ELEMENTS ...................16
BEFORE START ...............................19
DAILY CHECKS ............................19 Tilting The Seat ...........................19 OPENING AND CLOSING OF PARTS ..............19 HANDLING THE SAFETY DEVICES .................................22
OPERATION OF THE ENGINE .........23
STARTING THE ENGINE .............23 STARTING THE ENGINE UNDER COLD CONDITIONS ...31 STOPPING THE ENGINE .............31 STARTING WITH AN AUXILIARY BATTERY ......32
EXCAVATOR OPERATION ...............33
CONTROL OBSERVATIONS DURING OPERATION .............33 RUNNING-IN OF THE NEW EXCAVATOR ........33 STARTING ..................................33
TWO PATTERN SELECTION SYSTEM (TPSS) ......................35 OPERATION OF THE BOOM .......36 OPERATION OF THE ARM ..........36 OPERATION OF BUCKET ...........37 SWIVEL (UNIT SWING) OPERATION ............................37 BOOM SWING OPERATION ......38 BOOM SWING PEDAL ................38 OPERATION OF TRACK WIDTH CHANGE AND DOZER ...........................39 SERVICE PORT OPERATION ......41 DRIVING ......................................41 TURNS .......................................43 UP AND DOWNHILL TRAVELLING ..........................45 PARKING ON A SLOPE ...............45 IMPORTANT INFORMATION ON EXCAVATOR OPERATION .....46
TRANSPORTING THE EXCAVATOR ON A TRUCK ................................47
LIFTING OF THE EXCAVATOR .........49
Care and Maintenance
MAINTENANCE INTERVALS ......51 DAILY CHECKS ............................53
REGULAR CHECKS AND MAINTENANCE WORK ...............58
EVERY 50 SERVICE HOURS ......58 EVERY 200 SERVICE HOURS ....60 EVERY 250 SERVICE HOURS .....60
EVERY 500 SERVICE HOURS .....61 EVERY 1000 SERVICE HOURS ...66 EVERY 1000 SERVICE HOURS OR ONCE A YEAR .........................67 EVERY 2000 SERVICE HOURS ....67 ANNUAL SERVICING ................68 BIENNIAL SERVICING ...............68 OTHER SERVICING .....................69
OTHER ADJUSTMENTS AND REPLACEMENTS ........................70
PURGING OF THE FUEL SYSTEM .................................70 ADJUSTMENT OF TRACKS ........70 EXCHANGE OF BUCKET TEETH AND SIDE CUTTERS [JPN BUCKET VERSION] ........72 FUSES .........................................74
OPERATION UNDER COLD WEATHER CONDITIONS ................81
PREPARATION FOR OPERATION IN COLD WEATHER ................81 PROCEDURE AFTER DONE WORK ...........................81
LONG STORAGE .............................82
RECOMMENDED OILS ...................84
BIODIESEL FUEL (BDF) ..............86
MAIN DIMENSIONS .......................88
LIFTING CAPACITY .........................89
The best insurance against accidents is to abide by the safety regulations.
Read and understand this section carefully, before operating the excavator.
Every user, however experienced, should carefully read and understand this section and those of the attachments and accessories before taking the excavator into operation. The owner is obliged to inform the operators of these instruction in detail. Keep this manual in the storage place. (See "Keeping the Operator's Manual" in the BEFORE START section.)
1. BEFORE OPERATION
Make yourself acquainted with the excavator and be aware of its limits. Read this operator’s manual carefully before starting the excavator.
Obey the danger, warning and caution labels on the machine.
For your safety, a ROPS/OPG (Top Guard Level I) with a seat belt is installed by KUBOTA. A ROPS: Roll-Over Protective Structure A OPG (Top Guard Level I): Operator
Protective Guards of Top Guard Level I OPG (Top Guard Level I) in accordance with ISO10262 is equivalent in de. nition to FOPS (Falling Object Protective Structure). Always use the seat belt when the machine is equipped with a ROPS/OPG (Top Guard Level I) as this combination will reduce the risk of serious injury or death, should the excavator be upset or falling objects occur. Do not modify any structural members of the ROPS/OPG (Top Guard Level I) by welding, drilling, bending, grinding or cutting, as this may weaken the
structure. If any component is damaged, replace it. Do not attempt repairs. If the ROPS/ OPG (Top Guard Level I) is loosened or removed for any reason, make sure all parts are reinstalled correctly. Tighten mounting bolts to proper torque.
ROPS meets requirements of ISO 3471. OPG (Top Guard Level I) meets requirements of OSHA 1926·1003/ISO 10262.
The seat belt must be inspected regularly and replaced if frayed or damaged.
Track can be set at the narrow width 39in. (990mm) and the standard width 49in. (1240mm). (for details see “OPERATION OF TRACK WIDTH CHANGE AND DOZER”) Do not operate in narrow track width 39in. (990mm), it makes risk of the excavator tipping over, operate always in standard track width 49in. (1240mm), except to pass through narrow space on a even ground.
7. Do not use the excavator under the
in.uence of alcohol, medication as well
as other substances. Fatigue is also
8. Check the surroundings carefully before
using the excavator or when attachments
are being attached.
• Pay attention to the overhead clearance
with electric wires.
• During excavator use do not allow any persons within the working range.
Do not allow other persons to use the machine before having informed him on the exact operation and work instructions, and be assured that the operator’s manual has been read and understood.
Do not wear baggy, torn or too large clothing when working with the excavator. Clothing can get caught in rotating parts or control elements which can cause accidents or injuries. Wear adequate safety clothing, e.g. safety helmet, safety shoes, eye protection, ear protection, working gloves, etc., as necessary and as prescribed by law or statutes.
Clothing .t for work
Good grip shoewear
Well . tting cuffs
Loose cuffs of the shirt
Do not allow passengers to get on any part of the excavator seat throughout operation.
Check mechanical parts for correct adjustments and wear. Exchange worn or damaged parts immediately.
Keep your excavator clean. Heavy soiling, grease, dust and grass can in.ame and cause accidents or injuries.
Use only KUBOTA authorized attachments.
Before starting the excavator, be absolutely sure that the excavator has been . lled with fuel, lubricated, greased and undergone other maintenance work.
Do not modify the excavator, otherwise it could lead to unforeseen safety problems.
Make sure attachments, particulary those utilizing quick attach systems, are securely mounted.
2. STARTING OF THE EXCAVATOR
Get into and out of the machine safely. Always face the machine. Always use handrails and available steps and keep yourself well balanced. Do not hold any of the control Ievers and switches. Do not jump on or off the machine, whether stationary or in motion.
Start and control the excavator only from the operator’s seat. The driver should not lean out of his seat when the engine is running.
Before starting the engine, make sure that all control levers (including auxiliary control levers) are in their neutral positions. Before starting the engine, make sure that the control levers, travel lever, pedals and other control elements are not stuck and can be moved smoothly. If stuck, for example, a lever may fail to return, possibly putting you in danger. If anything wrong is found, immediately pinpoint the cause and correct it.
Do not start the engine by jumping the starter connections. Do not try to circumvent using the starter switch, otherwise the engine could start suddenly and the excavator could move.
Make sure that the dozer is on the front side. (The dozer must be raised.) If the levers are activated with the dozer on the rear end, the driving direction is in the opposite direction of the drive levers.
Do not run the engine in closed or badly ventilated rooms. Carbon monoxide is colourless, odourless and deadly.
Keep all safety equipment and covers in place. Replace damaged or missing safety device.
Precautions against tipping over. In order to secure safe operation, keep away from steep slopes and embankments. Do not swing the bucket downwards. Lower the dozer during digging. Keep the bucket as low as possible while driving upwards. Turn slowly on slopes (do not fast). Do not keep the excavator near the edges of trenches and banks, as the earth can give away due to the weight of the excavator.
Watch out at all times where the excavator is being moved to. Keep an eye out for hindrances.
Keep enough distance from trench and bank edges.
• Safety for children Tragedy can occur if the operator is not alert to the presence of children. Children generally are attached to machines and the work they do.
Never assume that children will remain where you last saw them.
Keep children out of the work area and under the watchful eye of another responsible adult.
Be alert and shut your machine down if children enter the work area.
Never carry children on your machine. There is no safe place for them to ride. They may fall off and be run over or interfere with your control of the machine.
Never allow children to operate the machine even under adult supervision.
Never allow children to play on the machine or on the attachments.
Use extra caution when backing up. Look behind and down to make sure the area clear before moving.
When parking your machine, if at all possible, park on a . rm, .at and level surface; if not, park across a slope. Lower the bucket and dozer to the ground, remove the key place the control lock levers in the locked position from the ignition before you leave.
Before leaving the machine,
Bring the excavater on a . rm, . at and level surface.
Lower the attachments and the dozer blade on the ground.
Stop the engine.
Lock all control levers.
Remove the key.
4. SAFE LOADING AND TRANSPORT OF THE EXCAVATOR
Observe all regulations concerning the transport of excavators on public roads.
Use adequately long and robust ramps when loading on a truck. (for details see “TRANSPORTING THE EXCAVATOR ON A TRUCK”)
Do not change the running direction and to avoid a tipping over, do not try to swing the attachment crosswise to the loading ramps.
After loading of the excavator on a truck, engage the swing lock pin. Lower the attachment on the loading plane and release the pressure from the hydraulic system. Block the tracks with blocks and wire down the excavator. After loading the excavator on a truck, tie down the undercarriage of the excavator with a strong steel wire on the truck.
Do not brake abruptly with the excavator loaded. Mortal accidents could happen.
If the excavator is used to tow another machine, the load must be smaller than the strength of the hook.
Do not use hooks on the roof of canopy for lifting the excavator.
Max. drawbar pull at 32.3 kNcoupling hook
Max. vertical load at 2.7 kNcoupling hook
Before doing maintenance work on the excavator, place the machine on a . rm, . at and level surface, Iower the attachments on the ground, stop the engine then remove the key and release the cylinder pressure by actuating the levers. When dismantling hydraulic parts, make sure that the hydraulic oil has cooled down suf.ciently to avoid burns. Start maintenance work carefully, e.g. loosen screws slowly so that oil will not squirt out.
Before doing work on the engine, the exhaust system, the radiator and the hydraulics, let the excavator cool down suf. ciently.
Turn off the engine at all times when .lling with fuel. Avoid spilling and over.lling of fuel.
Smoking is prohibited while tanking and handling the battery! Keep sparks and .re away from the fuel tank and battery. Flammable gases escape from the battery, especially during charging.
Do not use or charge the re. llable type battery if the .uid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion. Check the . uid level regularly and add distilled water as required so that the .uid level is between the UPPER and LOWER levels.
Read and follow “STARTING WITH AN AUXILIARY BATTERY” in “OPERATION OF THE ENGINE”, when starting with an auxiliary battery.
To avoid short-circuiting the battery, always remove the earth cable . rst and attach the plus cable . rst.
Keep a .rst-aid box and a . re extinguisher at hand at all times.
Do not open the radiator cap before the radiator has cooled down suf. ciently. First loosen the cap to the . rst stop and allow the system enough time to release the remaining pressure. Then loosen the cap completely.
Leaking hydraulic .uid has enough pressure to penetrate the skin and cause serious injuries. Leakages from pin holes can be totally invisible. Do not use the bare hand for checking on possible leakages. Always use a piece of wood or cardboard. It is strongly recommended to use a face mask or eye protection. Should injuries occur with leaking hydraulic .uid, contact a doctor immediately. This .uid can cause gangrene or serious allergic reactions.
To avoid leakage of battery acid which contains heavy metals, do not throw the battery away.
Observe all laws and regulations concerning the disposal of used oil, coolants, solvents, hydraulic . uids, battery acids and batteries.
To avoid .re, do not heat the hydraulic components (tanks, pipes, hoses, cylinders) before they are drained and washed.
Use a face mask or eye protection to protect the eyes and respiratory system against dust and other foreign particles.
Securely support excavator with stands or suitable blocking before working underneath. For your safety, do not work under any hydraulically supported devices. They can settle, suddenly leak down, or be accidentally lowered.
Do not crawl under the excavator if the excavator is only supported by the boom and arm or the dozer. The excavator can tip over or lower itself due to hydraulic pressure loss. Always use safety struts or other appropriate supports.
KUBOTA uses no parts which are lined with asbestos. Do not use these kind of parts even if they can be installed.
Fire prevention Excavator and some attachments have components that are at high temperatures under normal operating conditions. The primary source of high temperatures is the engine and exhaust system. The electrical system, if damaged or incorrectly maintained, can be a source of arcing or sparks. The following .re prevention guidelines will help to keep your equipment up and running ef.ciently and keep the risk of .re to a minimum.
Blow off all accumulated debris near hot engine exhaust components such as turbocharger and exhaust manifold as well as exhaust pipes and muf. er more frequently when working in severe conditions.
Clean out all accumulated . ammable debris such as leaves, straw, pine needles, branches, bark, small wood chips and any other combustible materials from inside the machine belly pans or lower unit structures as well as from area in proximity to the engine.
Inspect all fuel lines and hydraulic hoses for wear or for deterioration. Replace them immediately if they begin to leak.
Examine electrical wiring and connectors frequently for damage. Repair any wires that are loose or frayed before operating the machine. Clean all electrical connections and tighten all electrical connections as necessary.
Inspect the exhaust system daily for any signs of leakage. Check for broken pipes and muf.er and also for loose or missing bolts, nuts and clamps. If any exhaust leaks or fractured parts are found, repairs must be completed prior to operation.
Always keep a multipurpose . re extinguisher on or near the machine. Be familiar with the operation of the . re extinguisher.
6.DANGER, WARNING AND CAUTION LABELS
Code No. RA238-5747-1 (2) Code No. RA228-5733-1
(1) Code No. RC418-5753-1 (2) Code No. RA228-5762-1
Code No. RD517-5795-2 [Both sides]
(1) Code No. RC418-5728-4
Code No. RC418-5727-4
Code No. RC418-5733-5 (4) Code No. RD809-5738-2 (6) Code No. 6C300-4744-1
Code No. RC108-5718-1 (2) Code No. RA228-5728-2 [Both sides]
Code No. RD358-5736-1 (4) Code No. RA228-5776-1 (6) Code No. RC108-5796-1Diesel fuel only No . re
[Both sides] (5) Code No. 68328-5735-1 [Both sides]
(7) Code No. RB419-5796-2 [Both sides]
(1) Code No. RB238-5737-1 (2) Code No. RC418-5737-2
7.CARE OF DANGER,WARNING AND CAUTION LABELS
Keep danger, warning and caution labels, clean and free from obstructing material.
Clean danger, warning and caution labels with soap and water, dry with a soft cloth.
Replace damaged or missing danger, warning and caution labels with new labels from your KUBOTA dealer.
If a component with danger, warning and caution label (s) af.xed is replaced with new part, make sure new label (s) is (are) attached in the same location (s) as the replaced component.
Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge.
Your KUBOTA dealer is always ready to help so that your excavator offers the best performance. After having carefully read this manual, you will realize that much of the routine maintenance can be done by yourself. Your KUBOTA dealer is responsible for servicing and the delivery of spare parts. When ordering spare parts from your KUBOTA dealer, always mention the serial number of the excavator and the engine. Note these numbers right away in the supplied lines.
Model Serial No. Excavator Engine Dealer's name
(To be .lled in through the owner)
Engine serial No.
Model name U17
Operating weight lbs.(kg)(including operator's) 3704 (1680)
Engine Type Water cooled 4 cycle diesel engine with 3 cylinder
Model name KUBOTA D902
Total displacement cc (cu.in) 898 (54.8)
Engine power SAE gross kW(HP) 12.0 (16.1)
SAE NET kW(HP) 11.3 (15.1)
Rated speed rpm 2300
Low idle speed rpm 1300 ~ 1400
Performance Unit swing speed rpm 9.1
Travel speed Fast mph (km/h) 2.6 (4.1)
Slow mph (km/h) 1.4 (2.1)
Ground psi pressure (kPa) (With operator) [kgf/cm2] 3.7 26 [0.26]
Climbing angle %(deg) 58 (30)
Dozer Width X Height in.(mm) 39.0/48.8 X 10.2 (990/1240 X 260)
Boom swing angle Left deg (rad) 65 (1.13)
Right deg (rad) 58 (1.01)
Pressure connection for attachments Max. displacement (Theoretical) US gal (L)/min 7.32 (27.7)
Max. pressure psi (MPa) [kgf/cm2] 2702 (18.6) 
Fuel tank capacity US gal (L) 5.0 (19)
Above dimensions are based on the machine with rubber trucks and JPN bucket. JPN = made in Japan
Speci.cations subject to change without notice.
With unloaded digging bucket.
Firm compacted soil.
Operators must exercise extra caution and follow instructions in the operator's manual.
Worse condition or heavier attachment to the above will decrease climbing angle.
DESCRIPTION OF MACHINE PARTS
Canopy (Rops / OPG (Top Guard Level I))
INSTRUMENT PANEL AND CONTROL ELEMENTS
• Instrument Panel, Switches
Working light switch
Working light (Option)
Speed indicator lamp
AUX operation lamp
Periodic check lamp
Clock setting request lamp
Remaining fuel warning lamp
Engine oil pressure warning lamp
Battery charge lamp
Coolant temperature warning lamp
Coolant temperature gauge
User setting switch (switch 2)
Display selector switch (switch 3)
• Control Pedals and Levers
Drive lever (left)
Control lever for front attachments (left)
Lock lever for attachment control
Service port pedal
Drive lever (right)
Control lever for front attachments (right)
Two travel speed switch
Control lever for dozer or track width
Boom swing pedal
Track width change / dozer select lever
In order to avoid damage, it is important to check the condition of the excavator before starting.
CAUTION To avoid personal injury:
• Do maintenance work on the excavator only on even ground with the engine off and the safety devices in the “Lock” position.
Walk around the excavator and check for
visual damage and wear.
Check coolant level. (See regular checkpoints
Check fuel level.
Check engine oil level.
Check hydraulic . uid level.
Check air . lter for clogging.
Check all control lamps, indicators, engine
rpm's counter and hour meter.
Check the light system.
Check the seat belt and the Rops/OPG (Top
Guard Level I) safety device.
Check the condition of the danger, warning
and caution labels. (See "DANGER,