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Kubota kx61 3 excavator service repair manual
1. KX61-3, KX71-3 WSM General
A. Body and engine identification marks
If trouble should occur during use, or if servicing is
necessary, contact the dealer who handles the
machine. At that time please inform the machine
model and engine type and serial numbers.
(1 )Machine serial number & plate
2~7;ShikitlU"igashi l-Qote,
KllBOTA Corooration ( ENiniwa-ku, Osaka. 556-8601 JAPAN
MASS kg MAX. DRAW BAL...R-PUL"LI====::;lkN
MODEL § SERIAL No.1 I
POWER kW MAX. VERT. LOAD I IkN
!ATIONI I
MANUFACTURED YEAR L...I_ _----I
1BAABAAAP288A
KTC. KCL, KTA version
~lUl~(Q)ii£6 <C®~@l1'!lft~@1l1l
247, Shi~tsuhigasi 1·Chome, Naniwa-ku, Osaka,556-8601 JAPAN
Name plate: Code No. RA018-57721
1BAAEANAP009A
(1)Machine serial numbe
(2)Engine serial number
(2) Engine serial number
e.g. D1503-2L0025
"2" indicates year of 2002 and "L" indicates
June.
So, 2L indicates that the engine was manufac
tured in June 2002.
No. Items Contents· Example
(1 Machine model KX71-3
(2) Serial No. 10001
(3 Engine No.
(4 PRODUCT IDENTIFICATION No.
I-S-3
2. KX71-3 WSM General
B.Safety precautions for servicing, disassembly and
reassembly
A Safety precautions for servicing
Most accidents during servicing arise from carelessness. Please remember that Safety involves both the
welfare of the employees and improved work efficiency.
A Safety precautions for Disassembly and reassembly
Machines must be disassembled and assembled effiCiently and safely.
It is very important to thoroughly understand the construction and function of the machine, to make all
appropriate preparations, and start operations according to the specified working procedures.
a. Safety measures before starting
work
(1 ) Work clothes
1. Wear specified work cap and clothed.
(Under no circumstances may workers
wear undershirts only.)
Cuffs must be kept buttoned, and any tears
must be mended.)
2. Wear safety shoes.
3. Do not wear cotton gloves when working
on the internal section of engine, reduction
gears or hydrauric units for repair or others,
or when using a hammer. Wear leather
gloves, however, when hoisting wires.
(2) Inspecting equipment and tools
1. Prepare equipment (cranes, fork lifts, tool,
etc.) required for servicing and inspect for
any problems before starting work.
2. Hammer heads (metal parts) must be firmly
secured to their handles.
3. Check hosting tools (wire ropes, hOisting
chains, etc.) before use.
(3) Keep workshop in order
1. Secure appropriate space needed for
disassembly to the job.
2. Secure a clean, safe place for arranging
disassembled parts.
3. Store volatile substances (gasoline, light
oil, thinner, oily articles, etc.) in appropriate
containers at selected locations to prevent
fire hazards.
b. Safety measures during work
(1) Protectors
1. Wear goggles when using chisels for
chipping.
2. Use appropriate protectors during welding.
3. Wear a helmet when working with a crane
or at elevated locations.
(2) Team work
1. When working with two or more people,
divide the work and maintain close
communication.
2. Crane work must be carried out using
predetermined signals.
(3) Disassembly and assembly
1. Do not wear gloves when using hammers.
2. Use rods of the speCified soft material for
removing pins. Do not use a hammer as a
pad.
3. Do not place fingers in holes when
centering.
4. Heavy parts must be adequately supported
before removing bolts.
(4) Cranes
1. In principle, use a crane for objects heavier
than 44lb (20kg).
2. Crane operation and hOisting must be
performed only by qualified personal.
3. Pay careful attention to the center of
gravity when hOisting, and do not stand
under the lifted objects.
(5) Others
1. To work under a jacked-up carrier, be sure
to place wood pieces under it.
2. When charging batteries, make sure there
are no open flames in the immediate
vicinity.
3. All electric tools must be grounded.
4. Before welding the machine, remove the
battery.
• When removing the battery, be sure to
disconnect negative (-) cord first.
• When mounting the battery, be sure to
connect the positive (+) cord first.
I-S-4
3. KX61-3, KX71-3 W5M General
c. Preparation for disassembly
(1) Cleaning
Remove mud and dirt from the body before disassembly.
(2) Acceptance inspection
The machine must be checked before it is disassembled to record existing conditions, such as those
listed below.
Model, serial number, and hourmeter reading
• Reason for repair and repair history
• Element stains
• Fuel and oil condition
• Parts damage *(Take photographs if necessary.)
(3) Equipment and tools
prepare equipment, tools, cranes and parts storage racks as required.
d. Precautions for disassembly and reassembly
(1) Disassembly
1. Follow the specified disassembly procedures.
2. Make alignment marks to insure correct reassembly.
3. Arrange disassembled parts in an orderly way, and attach identification tags or put marks if
needed.
(2) Reassembly
1. Clean all parts before assembly. Repair any scratches or dents. Take special precautions against
dirt and dust.
2. Parts with rust-preventive coatings must be assembles only after removing the coating.
3. Separated parts must be correctly reassembled using alignment marks.
4. As a rule, use a press to reassembled bearings, bushing and oil seals. Use pads when using a
hammer.
1-5-5
4. KX61-3, KX71-3 WSM General
C.IMPORTANT SAFETY PROCESS AND CRITICAL
FUNCTIONAL PROCESS
The following instructions are related to essential adhesives, important safety process I]] and critical
functional process ~ .Pay special attention in servicing these process. (Pay also close attention in
reconnecting the electrical cables.)
a. Essential Adhesives
Type of screw adhesive
• Unless otherwise specified, use Three-Bond 1324 adhesive (medium-duty type).
Keep the screw threads free of oil and water.
Type of instantaneous adhesive
• Use Three-Bond 1733 or Three-Bond 1741 E adhesive.
Keep the bond areas free of oil and water.
b. Important Safety Process ~ .
1. Reconnecting the fuel hose (clearance, hose routes, clamps, etc.)
2. Electrical cabling (engine, instrument panel, seat stand, etc.) (wiring routes, clamps and couplers)
c. Important Critical Functional Process ~ .
1. Setting up the travel wheel motor (tightening torque)
2. Reassembling the rotary jOints Goint direction and shaft set-up)
3. Installing the swivel base bearing and the swivel motor (tightening torque)
4. Fitting the pump couplings (tightening torque)
D.IMPORTANT INSPECTION ITEMS AFTER
REASSEMBLING
a Operate the Machine and check for Unusual Noise and Vibrations.
b Make Sure the Safety decals and Wireharness Clamps are in their Specified
Positions.
c With the Machine Front in a Specified Posture, Check the Amount of Hydraulic
Oil
Checking the oil level (For further details, refer to the Operator's Manual of each model.)
(1) Park the machine on a level ground.
(2) Make sure the hydrauric oil temperature is in the range of 10-30°C (50-86°F) and see if the oil
level is within the specified zone of the oil level gauge.
(3) Keep the machine front as shown as following posture.
Posture: Extend the rods of the arm and bucket cylinders nearly
half. Place the bucket on the ground, the offset swing at
the center, and the dozer also on the ground.
1-8-6
5. KX61-3, KX71-3 WSM General
E.SERVICING FUNDAMENTALS
a. Items for Servicing
Locking adhesive
(1) Tighten bolts, nuts, adapters,and similar parts
to their specified torques which are given in the
list of tightening torques and adhesive as well
as in this manual. Be sure to observe the
specified torques for important tightened parts
and components.
(2) Wipe out water, oil and grease off the screws
on which LOCTITE adhesive is to be applied.
Be sure to apply the adhesive to specified
locations.
Types of screw adhesive
Equivalent to LOCTITE 271 (Heavy-duty)
Equivalent to THREE-BOND 1305P (Heavy-duty)
Equivalent to THREE-BOND TB1401 B (Light-duty)
Unless specified otherwise, use THREE-BOND 1324
(Medium-duty).
Type of instantaneous adhesive
Use THREE-BOND 1733 or 1741E
The word "LOCTITE" in this manual denotes the
red-color type.
(3) Precautions in disassembling the hydraulic
equipment
• Use a vacuum pump, plugs, oil pans, waste
cloth and the like to prevent oil from
running out or splashing.
Wipe out leaking oil completely first and
then add oil as required.
• Protect the openings with plugs, covers or
the like to keep off foreign matters. Most of
hydraulic system troubles are caused by
the entry of foreign matters.
• Before reassembling, clean up the parts
and components and apply hydraulic oil on
them.
• The system consists of precision parts. Be
careful not to scratch them and apply
excessive force on them.
I-S-7
6. KX61-3, KX71-3 WSM General
x ?•
(4) Precautions in tightening hoses and pipes.
• Flexible hoses have a slight natural bend of
their own. Utilize the natural bend. Be also
careful not to twist them.
• Be careful not to confuse the routes of the
hoses.
• Do not hold the hoses in tight contact with
their adjacent parts and surfaces.
• Tightening steps
1. First tighten the nut to its specified
torque.
2. Then loosen the nut by about 450
to fit
the seat of the joint to the connection.
(5) The quantities of oil, fuel, water and others,
except for the oil to be filled in the track rollers
and idlers, are listed just as reference. Fill up
the fluid up to the specified center level of a
level gauge if it is provided.
(6) Security support the machine with a jack and a
supporting jig when it is jacked up for
servicing.
(7) Be sure to use a crane in disassembling and
reassembling heavy parts and components
(frame, front attachment, crawler, etc.).
1-8-8
7. KX61-3, KX71-3 WSM General
b. O-ring, Oil seal, Circlip and Roll
Pin
(1) General precautions
Make sure the O-ring and the oil seal are
O-ring groov~ free of anything unusual (uneven surface,
scratches, chipping, etc.).
• Check the O-ring groove for burrs. Correct,
if any, using an oil stone or the like.
• When putting a part past a sharp edge into
position, protect such edge with a cover or
Spline get the part chamfered.
(2) O-ring
• Clean up the O-ring groove and deburr its
edge as required.
Before installing the ring, be sure to apply
lubricant (grease) over it. (Do not do this to
the floating seaL)
• Fit the O-ring into its groove without twist.
With your fingertip, push the ring gently and
evenly into the final position. Otherwise the
ring would easily get twisted in contact with
the inner edge of the groove.
O-ring groove
(3) Floating seal
• Be sure to wipe oil off the O-ring and the 0
ring contact surface. (Note, however, that
oil must be applied thinly over those of the
wheel motor.)
• In fitting the O-ring into the floating seal, be
careful not to twist the O-ring.
Before installing the floating seal together
with the O-ring, apply sealing oil thinly over
the sliding surface. Be careful to keep the
sliding surface and O-ring in alignment with
the housing.
Sliding surface • Finally tum the floating seal 2 or 3 times by
O-ring
hand in order to form an oil film over the
sliding surface as well as to get the sealing
surface well it.
O-ring
I-S-9
8. KX61-3. KX71-3 WSM General
(4) Oil seal
• Do not confuse the orientation of the oil
seal lips. Direct the main lip toward the oil
chamber; in other word, toward what is to
be sealed.
a. Packing f. Dustpans lip
b. Metal ring g. Atmosphere (outside)
c. Spring h. Grease
d. Main lip
e. Oil chamber (inside)
• If in dry state. the oil seal may wear out
when running in the machine. To prevent
this. be sure to apply lubricant (grease)
over the lip sliding surface. If provided also
with a dustproof lip. fill the space between
this lip and the main lip with grease.
• As a rule, use a press to press-fit the oil
seal. If not available, apply a suitable tool
and tap it evenly without allowing any tilt.
Press-fit the oil seal deep down to the
bottom of the oil seal fitting boss.
(5) Mounting the circlip
• Place the circlip with its sharp edge facing
outward (in the locking direction).
• Fit the circlip securely in the groove. For
the hole circlip in particular, install and turn
it slightly to make sure it fits well.
®
Edge: Outside
(6) Tapping the roll pin (spring pin)
• Place the roll pin (spring pin) with its
opening perpendicular to the load.
• Place the roll pin (spring pin) with its
opening in the turning direction.
• Evenly tap the roll pin (spring pin) into
position.
Revolving
Spring pin
A
B
A=8
Revolving
1-8-10
9. KX61-3, KX71-3 WSM General
c. Piping
(1) General precautions
• Tightening the pipe socket to the specified torque. If too tight, the socket itself or a hydraulic
component may get damaged. It too loose, an oil leak may result.
• In connecting a new hose or pipe, tighten its nut first to the specified torque and then turn it back
(about 45°). Then tighten it again to the specified torque. (Do not this to the sealing tape-applied
hose or pipe.)
• When disconnecting a vertical hose or pipe, separate its bottom connection first.
• In disconnecting and reconnecting the hose and pipe, be sure to use two wrenches. With one
wrench, restrain the mating part to allow no twist
• Check the mating connector's sleeve and the hose's taper for dust deposits and scratches.
• When the pipe socket has been tightened up, wipe the joint clean. Apply the maximum operating
pressure 2 or 3 times to make sure there is no oil leak.
(2) Hydraulic hose
Check the hydraulic hose for too tight a connect or twist.
*Excessively tight contact
Let's suppose that a hose is in contact with another hose or other part. If the hose is pulled away by a
force of 2 kg but still in contact, it means the contact is too tight.
(3) Precautions in tightening the bolts and nuts
• Use bolts of specified length.
• Do not over tighten the bolts: Its threads may get deformed or the fixed part may get damaged. Do
not undertighten the bolt either: It may get loose.
• In other words, tighten the bolt to the specified torque.
• Tighten the bolts and nuts diagonally for even tightness.
Top and bottom alternately Diagonally Diagonally staring from center
1.4
2.3
Nut
Sleeve
R (Tapered thread) Steel pipe Union nut Tapered thread
G (Straight thread)
I-S-11
10. KX61-3, KX71-3 WSM General
(4) Hose screw Metric Size Hose
!i
I TorqueTightening torque1 Thread size
N'mThread size N'm (piping screw)Wrench size1
kgf·mkgf-m(piping screw)
i
1Union nut section . Taper thread section
I 20 - 30
M12)( 1.5
2.0 - 3.17.8 -11.8 N'm 14.71 - 19.61 N'm
1/8" 17mm i
..0.8 - 1.2 kgf'm 1.5 - 20 kgf'm
i I 20-30
1
M14)( 1.51
2.0 - 3.1i
24.5 - 29.4 36.3 - 44.11
1/4" 19mm
3.7- 4.5
..
2.5 - 3.0
30- 50
M16)( 1.5
3.1 - 5.149.0 -68.649.0 - 53.9
3/8" 22mm i 1
i 5.0 - 5.5 5.0 - 7.01 i
30- 50
M18)( 1.5
3.1 - 5.158.8 - 63.7 83.4 - 88.3 I1/2" 27mm I ...
6.0 - 6.5 8.5 - 9.0
: i
i
40 -60:
M22)( 1.5
4.1 - 6.1117.7 - 127.5 127.5 -147.1
3/4" 36mm I I13.0 -15.012.0 - 13.0
137.3 - 147.1 147.1 -166.7I1" 41 mm
14.0 - 15.0 15.0 -17.0i
(5) Joint bodies
I 1
Tightening torque
N'm i
Thread size Spanner size Remarks
kgf'm(piping screw) (reference) Steel pipe (00)
i I 1
R (tapered thread) G (straight thread)
1
!
1
19.6 - 29.4 N'm
1/8" 17mm 8mm-2.0 - 3.0 kgf'mi
W/O-ring 1
Joint Torque36.3 - 44.1
1/4" 12 mm19mm
3.7 -4.5 58.8 -78.5
6-8
When in steel
pipe is in use. i
W/O-ring
39.2 - 49.0 Joint Torque
3/8" 15mm23mm
4.0 - 5.0 78.5 - 98.1
8-10
W/O-ring
Joint Torque49.0 - 68.6 16mm1/2" 26mm
117.7 - 137.3
12 - 14
5.0 - 7.0
1
1-8-12
11. I
KX61-3, KX71-3 WSM General
(6) Tightening torque table for hose clamp (Screw type)
1
Tightening torque
Dia. (mm) Code No.No. N'm
kgf-m
i
1
2
3
4
5
6
012 -16
019- 25
031 - 40
036 46
015 25
026 38
09318-89016
09318-89024
09318-89039
09318-89045
RC101-64580
68311-72820 I
2.5 - 3.4
25 35
4.9 - 5.9
50 -60
7 013 20 RB101-63630
3.4 - 4.4
35-45
8 040 55 RC411-63180
9 077 95 69284-63170 4.9- 5.9
10 050 60 RC401-63190 50 -60
11 032 -44 RD411-63820
(7) Nuts for piping
Steel pipe size
(0.0.)( 1.0.)(
Thickness)
Tightening torque
N'm
kgf·m
Spanner size
(reference)
I
Remarks
8)( 6)( 1 mm 29.4 - 39.2
3.0 4.0
17mm
10)( 7)( 1.5 mm
39.2 -44.1
4.0 -4.5
19mm
i
12)( 9)( 1.5 mm
16)( 12)( 2 mm
53.9 -63.7
5.5 -6.5
88.3 - 98.1
9.0 -10.0
21 mm
29mm
When sleeve nut is in
use.
18)( 14)( 2 mm
127.5 -137.3
13.0 - 14.0
32mm
27.2 )( 21.6 )( 2.8 mm
235.4 - 254.97
24.0 -16.0
41 mm
1-5-13
13. KX61-3, KX71-3 WSM General
(10)Washer-equipped elbow
Tightening torque
Size N'm kgf·m
G1/4 25- 30 2.5 - 3.0
G3/8 49- 54 5.0 - 5.5
G112 59-64 6.0 -6.5
G1/8 I
15 - 16.5 1.5-1.7
Tightening procedure
1. Connecting with the valve
• Screw in the elbow by hand until the
washer comes into contact.
Note: Clean up the mating seal beforehand.
2. Positioning
• Turn the elbow back to its set position.
Note: Do not make any more than one turn back.
3. Fixing
• Tighten up the lock nut with a wrench.
• Lock nut tightening torque
I-S-15
14. KX61-3, KX71-3 WSM General
F. Maintenance intervals
a. Maintenance intervals chart:EU - version
General
Elapsed Operating Hour'
Maintenance
450: 50050 100 150 250 350 550 600 650 750 aDO200 300 400 700 850 900 950 1000 Interval
I !Check engine oil level dailyI
Check hydraulic oUlevel daily
Chcek fuel level daily i
Check coolant level dailyi
!Grease front attachments daily
Check V-belt daily
r/)
~ Check water in fuel filter daily
'2:
Q)
Tracks and chassis:(J)
weekly
clean, visual inspection and 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0.9 :(50 hrs)check tension
i
1
!
I!!
!Grease swivel gear 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 50 hrs
Check, clean air filter 1.) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 50 hrs
0Check nuts and bolts 0 0 0 0 0 0 00 100 hrsi
Grease swivel gear bearing 0 0 0 0 200 hrsj 0
Check battery electrolyte
0 0 500 hrslevel
1i i
IDrain water in fuel tank 0 0 500 hrs
The services identified with. must be carried out at the speCified service hours after initial operation.
1.) Under dusty conditions the air filter must be cleaned more frequently or renewed.
2.) When uSing a hydraulic hammer over 20% every 800h. When using a hydraulic hammer over 60%every 300h.
When using a hydraulic hammer over 40%every 400h. When using a hydraulic hammer over 80%every 200h.
3.) When using a hydraulic hammer over 50%every 200h. When using a hydraulic hammer over 50%every 100h.
4.) Earlier if necessary.
5.) At least annually.
Elapsed Operating Hours'
Service
50 100 150 200 250 300 350 400 450 500: 550 600 650 70Cl 750 Iaoo 850 900 950 1000!1~
Change engine oil and oil
o o o 250h01filter •
!,Inspect coolant hoses and o io o 0 250 h
iclamps
ICheck/adjust V-belt tension o 0 250 h0 1 0
..9i Grease pilot valve linkage 0 0 o 0 250h
I'" Change fuel filter 0Q) 4.) 0 500 h
5'C ~--~-------------+---+---+---+--~--~--4---4---+---+---+---t---t--4--~---+---+---+---+---+--~----~
Change hydraulic return line • 0 I
0 500 h
CD :filter element 3.)
~ rC-h-an-g-e-d-r-iv-e-u-nn--oi-I---5~.)-+-.--+---+---~-4~-4---+---+---+---+-0--~--!r-~---+--~---+---+--~---+---+--~--~
0 500 h
'iii Change hydraulic oil and
0 1000 hI
§ .suction filter. 2.)
~ ,Renewing the Pilot Circuit
1000 h0
'C ! Filter I
~ ~'-----------------+---+--~--~--+_--~_4--_+--~--~--+_--~_4--_+--~--~--+_--t_~r__+--_+--~
~ IChange air filter elements1.) I 1000 h0
:
11 Change idler and track roller I' I i 2000 hg> oil
'0 ~--------------~--+-~---+--+-~r--L--~--L--L--~--L-~---.---L--T--~~--t--+--~--~--~
.~ Check altemator and starter Please contact your KUBOTA dealer. I , 2000 h
(J) :motor
Inspect electric cables and annualliPlease contact your KUBOTA dealer.
connections
every 2! I
Change coolant years1 i
every 6
Please contact your KUBOTA dealer.Change hydraulic hoses years
I-8-16
15. KX61-3, KX71-3 WSM General
b. Maintenance interval chart PP - version
Hour meter indicator IRef.
ConsequentlyIntervalsCheck pointsiNo. page45050 100 150 300 350 400200 250
I Daily checkcheck
1 Coolant
i change every 2 years
2 Fuel check Daily check
i
check Daily check
Engine oil3
change @ every 250 hrs0
check Daily check
4 Hydraulic oil
change every 1000 hrs *1
i5 Lubrication pOints Daily check-
6 Radiator and oil cooler check Daily check
7 Engine and electrical wiring check Daily check every year
8 Fuel tank, Fuel filter drain every 50 hrs0 0 0 0 0 0 00 0
9 Battery condition check every 50 hrs0 0 0 0 0 0 0 00 i
Greasing swivel bearing teeth -10 every 50 hrs0 0 0 0 0 0 0 0 0
11 Fan belt tension adjust every 200 hrs0 0
check every 200 hrs0012 Radiator hoses and clamps
replace every 2 years
clean every 200 hrs *200Outer element
13 Air filter element @replace every 1000 hrs *2
Inner element replace every 1000 hrs *2
14 Greasing swivel ball bearings every 200 hrs00
15 Fuel filter element replace every 400 hrs @0
16 Engine oil filter replace @ every 250 hrs0
@17 Drive unit oil change every 500 hrs
18 Hydraulic return filter element @replace every 500 hrs
!
19 Hydraulic suction filter element replace every 1000 hrs
Fuel injection nozzle injection
20 @check every 1500 hrs *4
pressure
21 Front idler and track roller oil change every 2000 hrs
Alternator and starter motor check every 2000 hrs22
@23 Injection pump check every 3000 hrs *4
24 Radiator system every 2 yearsrinse
every 200 hrscheck 0 0 @25 Fuel line and intake air line
every 2 years *3replace
*500 thru 1000 continued to the following table.
I-S-17
16. KX61-3, KX71-3 WSM General
No, Check points Intervals
500 550
Hour meter indicator
600 650 700 750 800 1000
Consequently
Ref,
page
1 Coolant
check
change
Daily check
every 2 years
2 Fuel check Daily check
3 Engine oil
check
change
Daily check
0 0 every 250 hrs
4 ! Hydraulic oil
check
change
Daily check
0 every 1000 hrs '1
5 Lubrication points - Daily check
6 Radiator and oil cooler check Daily check
7 Engine and electrical wiring check Daily check every year
8 Fuel tank, Fuel filler
9 Battery condition
10 Greasing swivel bearing teeth
~,,, "'. to"';"
hoses and clamps
drain
check
adjust
check
replace
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0 0 0
~0 0
every 50 hrs
every 50 hrs
every 50 hrs
every 200 hrs
every 200 hrs
every 2 years
=H=
13 Air filter element
Outer element
clean
replace
0 0 0
0
every 200 hrs
every 1000 hrs
'2
'2 @
Inner element replace 0 every 1000 hrs "2
14 Greasing swivel ball bearings
15 Fuel filter element
16 Engine oil filter
17 Drive unit oil
~fiI"".mern, ' n filter element
-
replace
replace
change
replace
replace
0
0 0 0
0
0
h±±0
every 200 hrs
every 400 hrs @
-
every 500 hrs
....,250hBt!-every 500 hrs
every 1000 hrs
i 20
21
Fuel injection nozzle injection
pressure
Front idler and track roller oil
check
change I
every 1500 hrs
every 2000 hrs
"4 @
22 Alternator and starter motor check every 2000 hrs
23 Injection pump check every 3000 hrs '4 @
24 Radiator system rinse every 2 years
25 Fuel line and intake air line
check
replace
0 0 0 every 200 hrs
every 2 years '3
@
IMPORTANT:
@ First operation
*1 When using a hydraulic breaker, change hydraulic oil and return filter according to the table on "Hydraulic Oil Change
(Including EXChange of the Suction Filter in the Hydraulic Tank) under "EVERY 1000 SERVICE HOURS" in the chapter
"REGULAR CHECKS AND MAINTENANCE WORK",
*2 Clean and replace the air filter more frequently if used under dusty conditions. By heavy soiling, replace the filter.
*3 Replace only if necessary.
*4 Consult your local KUBOTA Dealer for this service.
The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA
non-road emission regulation. As the engine owner, you are responsible for the performance of the required
maintenance on the engine according to the above instruction. Please see the Warranty Statement in detail.
I-S-18
17. KX61-3, KX71-3 WSM General
c. Hydraulic Oil Check for machines with Hydraulic Breakers
The Hydraulic oil change after 1000 operating
hours in the operator's manual is based on the
type of work done. Following inspection measure
are valid when hydraulic breakers are used:
(1) Changing and filling up of hydraulic oil
1. The hydraulic oil must be changed more
often when breakers are used because the
machine is subject to harder conditions
than at normal excavating work.
2. Use only the recommended oils mentioned
in the operator's manual when changing or
fill oil.
Return
3. When filling up oil, never mix oils of
different makes.
(2) Changing the return filter and oil
1. The filter must be changed more often
because of contamination resulting from
the frequent assembly and disassembly of
the hoses.
2. Use the correct replacement filter.
3. Oil change according to operating hours.
Hydraulic oil Return Filter Suction Filter
Normal excavator
work
every 1000 Hrs. i 500 Hrs. I
Breaker
work
portion
20%
40%
60%
More
than
BO%
every BOO Hrs.
every 400 Hrs.
every 300 Hrs.
every 200 Hrs.
300 Hrs.
100 Hrs.
1000 Hrs.
1-5-19
18. KX61 KX71-3 WSM General
d. Periodic replacement of important parts
To ensure safety in traveling and operating the machine, the user is strongly requested to carry out
periodic inspection and servicing. For added safety, the following important parts, related to safety and fire
hazards in particular, must be replaced at their specified intervals.
With the passage of time, these parts easily get degraded in material or worn out. They are difficult to
check for anything unusual even at periodic inspection and servicing. Even if nothing unusual is found, it
is essential to replace them with new ones after their specified service life, in order to maintain complete
function.
If by any chance any of these parts gets in trouble even before its service life, it must be repaired or
replaced as usual.
In replacing the hoses, check also the hose clamps for deformation, cracks and other troubles. Replace
the hose clamps too with new ones, as required.
Check all the hydraulic hoses, including those to be replaced at regular intervals, for the following points.
Tighten up or replace them, as required.
When replacing the hydraulic hoses, change their O-rings and sealing for new ones at the same time.
• Check the fuel and hydraulic hoses too at the following periodic inspections.
Inspection intervals Inspection item
Daily inspection Fuel and hydraulic hose connections as well as crimped parts for oil leak
Monthly inspection
Fuel and hydraulic hose connections as well as crimped parts for oil leak
Fuel and hydraulic hoses for damages (cracks, wear-out and peel-off)
Specified self-imposed (yearly)
inspection
Fuel and hydraulic hose connections as well as crimped parts for oil leak
Fuel and hydraulic hoses for interference, deformation, degrading, twist and other
damages (cracks, wear-out, peel-off)
• List of important parts
i
No. Periodic-replaced parts Q'ty
Replacement
intervals
1 Fuel hose (Fuel tank - Fuel filter) 1
2 Fuel hose (Fuel filter - Fuel pump) 1
3 Fuel hose (Fuel pump - Fuel nozzle) 1
4 Fuel hose (Fuel nozzle - Fuel tank) 1
5 Hydraulic hose (Main pump suction) 1
6 Hydraulic hose (Main pump delivery) 4 2 years or 4000
7 Hydraulic hose (Boom cylinder) *2
operating hours,
whichever
8 Hydraulic hose (Arm cylinder) *2+2 comes earlier
9 Hydraulic hose (Bucket cylinder) *4
10 *,draulic hose (Swing cylinder) 2
11 draulic hose (Dozer cylinder) 4
12 Hydraulic hose (Service port) *2+2
13 Hydraulic hose (Swivel motor) 2
Note: The "'-marked hydraulic hoses are Kubota's genuine ultra wear-resistant hoses. Be sure to use
these parts.
I-S-20
19. KX61-3, KX71-3 WSM Machine body
A.Specifications
a. Machine weight
Track i Arm Unit KX61-3 EU KX71-3 EU KX71-3 PP
I kgf 2530 2720
STD. -
(Ibs) (5578) (5997)
•Rubber
i
kgf !
2540 2730 2780
Long
(Ibs) (5600) (6019) (6129)....__... ICanopy
kgf 2625 2815
STD. -
(Ibs) (5787) (6206)
. _ Steel
kgf 2635 2825
Long
(lbs) (5809) (6228) (6338) .:l
i
...
kgf 2640 2830
STD. -
(Ibs) (5820) (6239)
Rubber
kgf 2650 2840 2890
Long
(Ibs) (6371)(5842) (6261)
Cabin
kgf 2735 2925i
STD.
i(Ibs) (6030) (6449)
Steel
kgf 2745 2935 2985
Long
(Ibs) (6581 )(6052) (6471)i
kgf 2580
I STD. · !
(Ibs) (5688)
, Rubber
kgf 2590
-Long ·
(Ibs) (5710)
Cabin (Light weight)
kgf 2675
.STD.
(Ibs) (5897)
Steel
kgf 2685
Long -·
(Ibs) (5919)i i
(Note: Cabin - canopy = 10Skgf, Steel crawler - rubber crawler = 9Skgf, Long arm - STD. arm = 10kgf)
20. ----
- -
KX61-3, KX71-3 WSM Machine body (Service section)
b. Machine specifications
[1] Major specifications
Unit KX61-3 KX71-3 EU KX71-3 PP
Engine
Type Vertical, water-cooled 4 cycle, 4 cylinders diesel
Model
V1505-E2BH-9-EU V1505-E2BH-10-EU V1505-E2BH-1 0
I
i
kW ~18.3 20.6
gross engine output (SAE J1349)
28.0 ~PS 24.9
in3Displacement 1498.0 91.4 1498.0 91.4 i ~cc
1_ I
Dimensions
i
4550 179.1Overall length mm in 4270
168.1 178.04520
i I
1
~Overall width Imm 1400
in 55.1 i 1500
59.1
i
~Overall crawler width in 1400
55.1 1500 59.1mm :
~Canopy mm in 2430
95.7 2430 95.7 ---l
i
Overall height
~94.9Cabin mm- in 2410
94.9 2410
mm 12.0 ~Min. ground clearance in 305
12.0 305
•STD. Arm mm in 2490
2680
105.5 ~98.0
Max. digging depth I
~Long Arm in 2740
113.0mm 107.9 i 2870
~STD. Arm 4360
171.7 4470 !
176.0mm in
Max. digging height
Long Arm mm in 4540
178.7 4600
181.1 ~
STD. Arm ~mm in 176.4 4700
185.04480
Max. digging radius
Long Arm mm in 4720
185.8 192.5 ~4890
STD. Arm i
mm in 3060
120.5 3170
124.8 ~
Max. dumping height
Long Arm mm ~in 3240
127.6 3300
129.9
~Swing angle (left/right) deg. 78/57 ~
mp
kmlh 2.6 1.6Low speed 2.8 1.7 2.7 1.7
i I
h
Travel speed
mp
4.5 2.8High speed kmlh 4.4 2.7 4.6 2.9
h I I
~Swivel speed rpm 9.5 i ~
i
22.1 5.020.2 4.5 22.3 5.0
Low speed ~ 2.3 2.3kgf 2.1
Max. traction force
11.1 2.511.7 14.6 3.3kN Ibf 2.6
High speed
1.1kgf 1.2 1.5
I
Performance
Tumbler distance imm
~~61.4in 1560
47.2 ~
300 x 53 x 80 ! ~
1100
43.3 ! 1200
Tread mm in
~mmCrawler width x No. of shoe x pitch
(Rubber crawler) ~~11.8 x 2.1 x 3.2in
Bucket
3
I
yd3 0.10.07 0.1 0.080.06 0.1mCapacity CECE heaped I I
~
=C 47.243.3 1200
1100
inWidth Imm
Blade
Width x height Imm
~55.1 x 11.8 I 1500x 300 I 59.1 x 11.8
in i 1400 x 300
I
340 x 300 i 13.4 x 12.2
370 x 350 114.6 x 13.8
13.8 x 12.2350 x 310
mm inLift above GL 1below GL
I
II-S-4
22. KX61-3, KX71-3 WSM Machine body (Service section)
c. Lever stroke and operating force
KX61-3 KX71-3 EU KX71-3 PP Remarks
Unit
mm
f73.0 73.0 74.0 74.0f-
i
IStroke
I in. 2.9 f2.9 i
f 2.9 2.9
Boom
10.0N 10.0 f- f 14.0 14.0 Up/Down
Force kgf 1.0 1.0 f- f 1.4 1.4I
Ibf 2.2 2.2 f- f 3.1 3.1
mm 73.0 f- f73.0 74.0 74.0
Stroke
in. 2.9 2.9 f- f 2.9 2.9
!
NArm 10.0 f10.0 f 14.0 14.0 i Crowd / Dump
Force kgf 1.0 1.0 f- f 1.4 1.4
Ibf 2.2 2.2 f 3.1
mm 72.0
f 3.1
72.0 f- f 72.0 72.0
Stroke
in. 2.8 2.8 f- f 2.8 i 2.8
Bucket
N 10.0 14.0 Crowd / Dump
Force kgf
10.0 f- f 14.0
1.0 f- f 1.41.0 1.4i
Ibf 2.2 f2.2 f 3.1 3.1
mm 72.0 72.0 f- f 72.0 72.0
IStroke
I in. 2.82.8 f- f 2.8 2.8
ISwivel N 10.0 f- Right / Left10.0 f 14.0 14.0
i
•Force kgf 1.0 1.0 f 1.4 1.4
Ibf
f
2.2 2.2 f- f 3.1 3.1I
, mm 74.0 74.0 f- f- f- f-
Stroke
in. 2.9 f- f- f- f2.9
Travel (Left I Right) N 16.0 f- f- f- f16.0 FIR
Force
i
1.6kgf 1.6 f- f f-f-
Ibf 3.6 3.6 f- f f- f-
i
!
mm 51.0 51.0 f- f 58.0 58.0
Stroke
in. 2.0 2.0 f f- 2.3 2.3
Blade
f-N 25.0 25.0 f 24.0 24.0 Up/ Down
Force kgf 2.5 f2.5 f 2.4 2.4
Ibf 5.6 f- f5.6 5.4 5.4 i
N
i
f- f48.0 43.0 f- f-
Acceleration kgf f- f- f- f Up/Down
Ibf
Force 4.9 4.4
f-f- f- f10.8 9.7
f- f 45.0 45.0
Swing pedal
33.0 33.0N
f 4.6 Up/Down
Ibf
f 4.6Force kgf 3.4 3.4
10.1
N
f- f- i 10.17.4 7.4
f 45.0 45.0
Service port pedal
43.0 43.0 f-
Front I Back
Ibf
4.64.4 f- f 4.6Force kgf 4.4
f 10.1 10.1
N
9.7 9.7 f-
f-f- f12.0 34.0 !
f-
f- Upl Down
Ibf
f- fkgfSafety lock lever(Left) Force 1.2 3.5 f-
f- f-f2.7 7.6 f-
I I
Il-S-6
23. KX61-3, KX71-3 WSM Machine body
d. Dimensions of parts
[1] Front pins Service limit of pin dia. : -1.0 mm (-0.04 in.)
KX71-3 PP LocationNo. KX61-3 KX71-3 EU-
Unit
mm
$40.0 x 186.0 $40.0 x 191.0 Swing bracket
1 Pin diameter x length f
- Boom cylinderin. $1.57 x 7.32 $1.57 x 7.52
mm $40.0 x 269.0 $40.0 x 274.0
2 Pin diameter x length f- Swing bracket - Boom
in. $1.57 x 10.59 $1.57 x 10.79
mm $40.0 x 177.0 $40.0 x 182.0
3 Pin diameter x length f- Boom - Boom cylinder
in. $1.57 x 6.97 $1.57 x 7.17
mm $35.0 x 114.5 Swivel frame
4 Pin diameter x length f- f
- Swing cylinderin. $1.38 x 4.51
mm $35.0 x 88.5 $35.0 x 93.0 Swing bracket
5 Pin diameter x length f
- Swing cylinderin. $1.38 x 3.48 i $1.38 x 3.66
mm $60.0 x 127.0 Swing bracket
6 Pin diameter x length f- f
- Swivel frame(Lower)in. $2.36 x 5.00
mm $60.0 x 154.0 Swing bracket
7 Pin diameter x length f- f-
Swivel frame(Upper)in. $2.36 x 6.06
mm $40.0 x 177.0 $40.0 x 182.0 =Pin diameter x length8 f- Boom - Arm cylinder
in. $1.57 x 6.97 $1.57 x 7.17
mm $40.0 x 160.0 $40.0 x 169.0
9 Pin diameter x length f- Arm - Arm cylinder
in. $1.57 x 6.30 $1.57 x 6.65
mm $40.0 x 214.0 $40.0 x 221.0
10 Pin diameter x length f- Boom - Arm
in. $1.57 x 8.43 $1.57 x 8.70
mm $40.0 x 160.0 $40.0 x 169.0
11 Pin diameter x length f- Arm - Bucket cylinder
in. $1.57 x 6.30 $1.57 x 6.65
mm $40.0 x 171.0 $40.0 x 195.0 $40.0 x 193.0 Bucket links 1, 2, 3
12 Pin diameter x length
in. - Bucket cylinder$1.57 x 6.73 I $1.57 x 7.68 $1.57 x 7.60
mm .Ox171.0 $35.0 x 195.0 $40.0 x 193.0
13 Pin diameter x length Arm - Bucket links 2, 3
in. $1.38 x 6.73 $1.38 x 7.68 $1.57 x 7.60
i
mm $30.0 x 189.0 $35.0 x 233.0 $40.0 x 233.0
14 . Pin diameter x length Bucket - Bucket link 1
in. $1.18 x 7.44 $1.38 x 9.17 $1.57 x 9.17i
mm $30.0 x189.0 $35.0 x 233.0 $40.0 x 233.0
15 IPin diameter x length Arm - Bucket
in. $1.18x7.44 $1.38 x 9.17 <1>1.57 x 9.17
Note: New Pin'S tolerance: $30=g~, $35:g~. $40=g~ (1.1S:gGGL 1.3S=gGG~, 1.57:g~)
Material: S43C-D, S45C-D
Effective hard depth =2 .... 4mm (O.OS .... 0.16 in)
Surface hardness =HRC 52 .... 59
o.o[]_____j)-_ -~_t
a
0.0.
a
a: length
U-S-7
24. KX61-3, KX71-3 WSM Machine body (Service section)
[2] Bucket link SelVice limit of front bushing: +1.0 mm (+0.04 in.)
No. i Unit KX61-3 i
KX71-3 EU I KX71-3 PP
Bucket interchangeability . ~ ~
.
mm $3o:g16 $35:816 $40:81~
a(Bush) inner dia.
in. $1.18:8~ $' i:8~ $1.57!g8~
mm $38+g 025 $45+g025 $50+g025
b(Arm) boss inner dia. , .
$1.5o+goo1 $1.77+g 001 $1.9rg oo1,In.
mm $3o:8~ $35:g6g $4o:gJg
c(Bucket) boss inner dia.
Iin. $1.18:g~ $1.38:g~ $1.57:ggg~
mm $38+8025
i
$45+8 025 $50+8025
,d(Link)
i
in. $1.50+8 001 $1.77+goo1 $1.9rg001
i
mm 137i05 $135105 iO,5 I
e
iin. 5.39io,020 $5.31 iO,020 0.00·0,020
mm 110+6 $134:g~
f
4.33+g039
$5.28:g8i~ o.Oo:gggg Ii in.
'mm 160 184 i
g
in. 6.30 7.24 0.00
mm 184 208
h
in. 7.24 8.19 0.00
i
,
200 244 244mm
i
rI(p'. d'a.)
in. 7.87 9.61 i 9.61
mm $3o:gg~ $35:g~ $4o:ggf
,in. $1.18:g,~ $1.38:ggg~ $1.57:ggg~
(Wear limit: Pin, -1.0 mm, bush, +1.0 mm diameter)
Bucket link
e
Arm
h
1I-S-8
25. KX61-3, KX71-3 WSM Machine body
[3] Bucket dimensions
No. Unit KX61-3 KX71-3 EU Remarks
I
1 I mm
in.
448.0
17.64 I
480.0
18.90
2
mm
in.
472.0
18.58
I 504.0
19.84
3
mm
in.
q,76.3 x t9.5
q,3.oo x to.37
$76.1x t1o.o
q,3.oo x to.39
4
mm
in.
184.0
7.24
184.0
7.24
5
mm
in.
110.0
4.33
134.0
5.28
6
mm
in.
12.0
0.47
12.0
0.47
I 7
mm
in.
25.0
0.98
25.0
0.98
8
I mm
in.
56.0
2.20
67.0
2.64
9
10
mm
in.
mm
in.
q,54.0
q,2.13
ij)65.0
<1>2.56
q,64.o
$2.52
ij)8o.o
<1>3.15
(Service limit)
Front pin dia. : -1.0 mm (-0.04 in.)
Front bushing dia. : +1.0 mm (+0.04 in.)
11
mm
in.
ij)3o.0;o05
<l>1.18!g~
<1>35.0;005
<l>1.38:g~
12
mm
in.
q,3o.o~o05
<l>1.18:g~~
<l>35.o~o05
ij)1.38:g~
13
mm
in.
589.0
23.19
594.0
23.39
14
mm
in.
503.5
19.82
566.0
22.28
15
mm
in.
78.5
3.09
78.5
3.09
16
mm
in.
148.0
5.83
187.0
7.36
17
mm
in.
137.0
5.39
135.0
5.31
18
mm
in.
0.0
0.00
14.5
0.57
NOTE: KUBOTA JAPAN BUCKET
As for KX71-3 PP - version, local content bucket will be installed.
II-S-9
26. KX61-3, KX71-3 WSM Machine body (Service section)
[4] Bucket installation relevant dimensions
I No. I Unit
KX61-3 KX71-3 EU !
Remarks
i STD. Arm I Long Arm STD. Arm I Long Arm
A
mm 60.0 59.8
I(in.) (2.36) (2.35)
mm 4>20.0 4>20.0 I
B
(in.) (4)0.79) (4)0.79) i
C
mm 50.5 52.9
(in.) (1.99) (2.08)
D I mm 60.0 60.0
I
(in.) (2.36) (2.36)
E
mm 32.3 14.5
-1(in.) (1.27) (0.57)
F
mm 5.0 5.0
(in.) (0.20) (0.20)
G
mm 905.0
I
1155.0 1005.0
I
1205.0 I
(in.) (35.63) (45.47) (39.57) (47.44) I
H
mm 10.0 7.5
(in.) (0.39) (0.30)
I
mm 259.0 273.0
I(in.) (10.20) (10.75)
mm 225.5 292.0
(Service limit)
J
(in.) (8.88) (11.50)
IFront pin dia. : -1.0 mm (-0.04 in.)
K
mm 157.0 182.0
: Front bushing dia. : +1.0 mm (+0.04 in.)
(in.) (6.18) (7.17)
L
mm 1076.5 990.5
I
1142.0 !
(in.) (42.38) (39.00) (44.96) i
M i mm 240.0 260.0
J(in.) (9.45) (10.24)
N I mm 240.0 230.0 I
(in.) (9.45) (9.06) I
0
mm 145.0 145.0 I
(in.) (5.71) (5.71) i
P
mm 1050.0 I
1300.0 1150.0
I
1350.0 I
(in.) (41.34) I (51.18) (45.28) (53.15) I
Q I
mm 2088.0 2240.0
I(in.) (82.20) (88.19)
R
mm 1134.0 1110.0 !
(in.) (44.65) (43.70) i
S
mm 1046.0 1166.0
I(in.) (41.18) (45.91)
NOTE: KUBOTA JAPAN BUCKET STANDARD ARM
As for KX71-3 PP - version, local content bucket will be installed.
F.
L --------1
K
-t------G -----t--
JI-S-10
27. KX61-3. KX71-3 WSM Machine body
e. Undercarriage specifications
[1] Rubber crawler
Unit i KX61-3
Crawler ass'y code No. RB511-22311
Identification mark
(Core metal rapping position)
00
A : Lug height
mm 25.0
in. 0.98
B : Link height
mm 19.0
in. 0.75
C : Crawler width
mm 300.0
in. 11.81
D : Crawler sag distance
mm 10 -15
in. 0.39 - 0.59
E : Crawler height
mm 80.5
in. 3.17
Number of Core metal 80
Circumference
mm 4240.0
in. 166.93
Core metal pitch
mm 53
j in. 2.09
Rubber thickness I ~m
26.5
1.04In.
[2] Steel crawler
KX71-3 (EU I PP) Remarks
I
~
~
~
~
i
I
~
~
~
I
~ Material: FCD450H
~
~
~
Unit KX61-3
Crawler ass'y code No. RC301-22102
Crawler width
mm 300.0
in. 11.81
1) 4 links length (A)/(B)
mm 406.4 1416.4
in. 16.00/16.4
2) Height
mm 90.5/85.5
in. 3.56/3.37
3) Bushing O. D. (A)/(B)
mm 28.0/26.5
in. 1.10/1.04
4) Bushing I. D. (A)/(B)
mm 17.0/19.0
in. 0.67/0.75
5) Master pin O. D. (A)/(B)
mm i 17.0/15.5
in. 0.67/0.61
6) Grouser height
mm 16.5/8.0
in. 0.65/0.31
7) Crawler sag distance
mm 75 -80
in. i
2.95 - 3.15
Number of links 40
i KX71-3 Remarks
~
~
~
~
~
~
~
~
~
~
(A)New machine reference value (B)Allowable limit
)
Rubber crawler
~• 2)
1)
-te-------o
U-S-11
28. KX61-3, KX71-3 WSM Machine body {Service section}
[3] Track roller, idler, sprocket
Unit KX61-3 KX71-3 (EU 1PP) Remarks
•A : Roller surface diameter (A)/(8)
mm
in.
80.0175
3.15/2.95
t-
I
8 : Guide diameter
mm
in.
$124.0
$4.88
t-
C : Roller width
i
mm
in.
175.0
6.89
t
i
D : Upper roller diameter (A)/(8)
mm
in.
$76.3/72.3
$3.00/2.85
t-
E : Sliding plate thickness (A)/(8)
mm
in.
10.0/5.0
0.39/0.20 i
t
(A)New machine reference value
C (8)Allowable limit1-------..----------
B
Unit KX61-3 KX71-3 (EU/PP) Remarks
1) Idler O.D. (A)/(8)
mm
in.
$316.01$308.0
$12.44/$12.13
t
2) Guide width (A)/(8)
mm
in.
30.0/26.0
1.18/1,02
t
3) Idler width
mm
in,
72.0
2.83
t
4) Sprocket wheel O.D. (A)/(8)
mm
in.
$356.01$348.0
$14.02/ $13.7
$361.01$353.0
$14.21/$13.90
5) Sprocket wheel width (A)/(8)
mm
I in.
30.0/26.0
1.18/1.02
t
(A)New machine reference value
(8)Allowable limit
5)
II-S-12
29. KX61-3, KX71-3 WSM Machine body
[4] Dozer
I Unit KX61-3 KX71-3 EU i KX71-3 PP Remarks
Blade ass'y code No. (KTC, KCL, KTA) ! - - RC348-74411 I
Blade ass'y code No. (EU) RG248-74411 RG448-74411 -
mm <1>40.0 x 151 <1>40.0 x 125 !
i
A : Pin diameter x length <:
in. <1>1.57 x 5.94 <1>1.57 x 4.92
I B : Pin diameter x length
mm <1>45.0 x 110.0 <1>45.0 x 112.0
<:
in. <1>1.77 x 4.33 <1>1.77 x 4.41
mm <1>45.0 x 110.0 <1>45.0 x 112
C : Pin diameter x length <:
in. <jl1.77 x 4.33 <jl1.77 x 4.41 i I
mm 1400 1500
D : Blade width <:
in. 55.12 59.06
mm 295.0
E : Blade height
i
<: <:
in. 11.61
mm 965.0 1030.0
F : Blade length <:
Iin. 37.99 40.55
G : Blade tip plate mm 65.0 x 12
<: <:
height x thickness in. 2.56 x 0.47
mm 334
H : Length between blade arms <: <:
in. 13.15
c B
A
11-5-13
30. KX61-3, KX71-3 WSM Machine body (Service section)
f. Parts weight
Unit KX61-3 EU I KX71-3 EU KX71-3 PP I Remarks
Truck frame
kgf
(Ibs)
278.0
(612.9)
289.2
(637.6)
300.7
(662.9)
i
Swivel frame
i kgf
(lbs)
303.2
(668.4)
303.2
(668.4)
315.0
(694.5)
Swing bracket
Boom
.Arm
i
STD.
Long
kgf
(Ibs)
I kgf
(Ibs)
kgf
• (Ibs)
kgf
(Ibs)
61.4
(135.4)
97.9
(215.8)
45.7
(100.8)
55.2
(121.7)
61.4
(135.4)
115.6
(254.9)
60.8
(134.0)
72.2
(159.2)
I
I
61.4
(135.4)
116.6
(257.1)
-
74.6
(164.5)
I
i
i
KX71-3PP : Long arm only •
IBucke'
For STD. arm
i
IFor Long arm
kgf
(Ibs)
kgf
~ ..
i(lbs)
47.4
(104.5)
47.4
(104.5)
56.4
(124.3)
56.4
(124.3)
-
0.0
I KX71-4PP : Long arm only
Blade
kgf
(Ibs)
93.5
(206.1)
105.2
(231.9)
105.5
(232.6)
Protector (left)
kgf
(Ibs)
10.1
(22.3)
10.1
(22.3)
10.1
(22.3)
Protector (right)
kgf
.-.I (Ibs)
10.1
(22.3)
10.1
(22.3)
10.1
(22.3)
Weight (rear)
kgf
(Ibs)
69.5
(153.2)
225.0
.._
(496.0)
..
259.0
(571.0)
Rubber crawler
kgf_..
(lbs)
125.0
(275.6)
125.0
(275.6)
125.0
(275.6)
Steel crawler
kgf
i (Ibs)
168.5
(371.5)
168.5
(371.5)
168.5
(371.5)
Arch frame
kgf
(Ibs)
41.1
(90.6)
41.1
(90.6)
42.8
(94.4)
Engine
kgf
(Ibs)
110.0
(242.5)
110.0
(242.5)
110.0
(242.5)
Dry weight
. Hydraulic tank
kgf
(Ibs)
24.2
(53.4)
24.2
(53.4)
23.5
(51.8)
With filter
Fuel tank
kgf
! (lbs)
3.2
(7.1)
3.2
(7.1)
3.2
(7.1)
Swivel bearing
kgf
(Ibs)
38.6
(85.1)
38.6
(85.1 )
38.6
(85.1 )
Battery
kgf
! (Ibs)
18.0
(39.7)
18.0
(39.7)
18.0
(39.7)
Truck roller
kgf
(Ibs)
5.0
(11.0)
5.0
(11.0)
5.0
(11.0)
Upper roller
kgf
(lbs)
3.0
(6.6)
3.0
(6.6)
3.0
(6.6)
I
I
II-S-14
31. i
KX61-3, KX71-3 WSM Machine body
KX61-3 EU KX71-3 EU KX71-3 PP Remarks
kgf
Unit
81.7 81.7 75.4
RaPS/FOPS canopy
(180.1) (180.1) (166.2)
kgf
(Ibs)
179.6 179.6 i 169.6
RaPS/FOPS cabin
. (Ibs) (395.9) (395.9) (373.9)
kgf 17.0 17.0 17.0
Hydraulic pump
(37.5)(Ibs) (37.5) (37.5)
kgf 20.0 42.0 35.0
Traveling motor
(Ibs) (44.1) (77.2)
kgf
(92.6)
23.0 23.0 23.0
Swivel motor
(Ibs) (50.7) (50.7) (50.7)
kgf 8.4 8.5 8.5
!--- ...Sprocket
(Ibs) (18.5) (18.7) (18.7)
kgf 20.1 20.1 20.1
Idler ass'y
(Ibs) (44.3) (44.3) (44.3)
kgf 24.0
Control valve Without adaptors
(Ibs) (0.0) (0.0) (52.9)
kgf 22.1 22.125.0
Boom cylinder With protector
(48.7) (48.7)
kgf
(Ibs) (55.1)
23.0 21.0 21.0
Arm cylinder
(50.7) i (46.3)(Ibs) (46.3)
kgf 19.0 16.0 16.0
EU,US
(lbs) (41.9) (35.3) (35.3)
Bucket cylinder
kgf 16.0
AU.CA - -
(35.3)
kgf i 17.0
i(ibs).
17.0 17.0
Swing cylinder
(Ibs) , (37.5) (37.5) (37.5)
kgf 21.0 20.0 20.0
Blade cylinder
(46.3) (44.1) (44.1)
i kgf 11.0
(Ibs)
11.0 11.0
Rotary joint
(24.3) (24.3) (24.3)
The weights listed above are based on calculations and slightly different from actual ones.
I(Ibs)
II-S-15
32. KX61-3, KX71-3 WSM Machine body
g. Water and oil quantity
Unit KX61-3 EU KX71-3 EU KX71-3 PP Remarks
Radiator Canopy I Cab
Reserve tank
Engine crank case
Hydraulic oil Full
Hydraulic oil Tank
M1eel motor
Track roller
Upper roller
Front idler
Fuel tank
I L
gal
L
gal
L
gal
L
gal
L
gal
L
gal
ml
gal
ml
gal
ml
gal
ml
gal
I
•
I
4.3
1.1
1.1
0.29
4.5
1.19
53.0
14.00
38.0
10.04
0.6
0.16
80.0
0.02
60.0
0.02
75.0
0.02
45.0
0.01
!
I
i
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
f-
,KUbOla LLC-N-50F 50o/
JSAE 10W-30(CO)
i
ISOVG46
ISOVG46
SAE90(API GL-4)
SAE30(CO)
SAE30(CO)
SAE30(CD)
II-S-16
34. KX61-3, KX71-3 WSM Machine body
(1) Swing bracket
No. PART NAME No. PART NAME No. PART NAME
010 Assy bracket. swing 090 Pin 180 Bolt
020 Bush 100 Coliar, Thrust 190 Pin
030 Bush 110 Pin. Joint 200 Plate, Key
040 Bush 120 Pin, Sprit 210 Bolt
050 Bush 130 washer, Plain 220 Pin
060 Coliar 140 Pin 230 Nipple, Grease
070 Bush 150 Coliar, Thrust 240 Shim
080 Bush 155 Shim 250 Stud
082 Nipple, Grease 160 Pin 260 Nut
084 Plug 170 Plate, Retainer
(2) Boom
No. PART NAME No. PART NAME No. PART NAME
010 Boom 085 Shim 170 Shim
020 Pin 090 Bolt 180 Shim
030 Shim 100 Nut, Lock 190 Bolt
035 Shim 110 Pin 200 Nut, Lock
040 Bolt 120 Nipple, Grease 210 Pin
050 Pin 130 Shim 220 Nipple, Grease
060 Pin 140 Bolt 230 Shim
070 Nipple, Grease 150 Nut, lock 240 Bolt
080 Shim 160 Pin 250 Nut, Lock
(3) Boom Cylinder Cover
No. PART NAME No. PART NAME
010 Cover, Cylinder 030 Washer, Plain
020 Bolt 040 Cap, Cylinder cover
(4) Arm
No. PART NAME No. PART NAME No. PART NAME
010 Assy, Arm 080 Pin 130 Pin
020 Bush 090 Nipple, Grease 135 Nipple, Grease
030 Coliar 100 Shim 140 Shim
040 Collar 105 Shim 145 Shim
050 Nipple, Grease 110 Bolt 150 Bolt
060 Seal, Dust 120 Nut, Lock 160 Nut, Lock
070 Blank
(5) Bracket Link
No. PART NAME No. PART NAME No. PART NAME
010 Pin 090 Seal, Dust 170 Pin
020 Nipple, Grease 100 Link, Bucket 180 Nipple, Grease
030 Bolt 110 Link, Bucket 190 Shim
040 Washer 120 Pin 200 Spacer
050 Assy link, Bucket 130 Nipple, Grease 210 Washer. Plain
060 Bush 140 Shim 220 Bolt
070 Bush 150 Bolt 230 O-ring
080 Collar 160 Washer 240 Cap
(6) Blade
No. PART NAME No. PART NAME No. PART NAME
010 Blade 040 Bolt 070 Bolt
020 Nipple, Grease 050 Nut, Lock 080 Nut, Lock
030 Pin 060 Pin
Il-S-18
35. KX61-3, KX71-3 WSM Machine body
b. Exchange of bucket (Kubota Japan Bucket)
A CAUTION •
* When replacing the bucket, wear a hard helmet,
goggles and other protective gears.
* When working in buddy system, fully
understand signals from each other for added
safety.
Take the following procedures to replace the
bucket.
AIMPORTANT
* Be careful to keep the drawn-out pins free of
sand and mud.
* A dust seal is attached at each end of the
bushing. In removing and fitting the pins, be
careful not to damage the dust seals.
• Removing the bucket
1.Place the bucket just on a flat, level ground.
2.Stop the engine and let out pressure from the
hydraulic system.
3.Detach the O-ring from the groove and draw
out the pins A and B.
Fitting the bucket
1.PI~ce the O-rin~ on the boss of the bucket.
2.Ahgn the arm with the hole A, put the shims at
both ~nds ~f the arm, and couple them with
th~ pins. Align the link with the hole B, put the
shims at both ends of the link, and couple
them with t~e pins.
3.Apply and tighten up the pin fixing bolts.
4.Fit the O-ring in the groove.
I Move the O-ring 2 Bucket boss
5.Grease Up the pins.
I Move the O-ring 2 Bucket boss
U-S-19
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