wsm Kubota M128X Instruction manual
M128X
WORKSHOP MANUAL
TRACTOR
KiSC issued 07, 2008 A
TO THE READER
This Workshop Manual has been prepared to provide servicing personnel with
information on the mechanism, service and maintenance of M128X. It is divided into
three parts, “General”, “Mechanism” and “Servicing”.
QGeneral
Information on the tractor identification, the general precautions, maintenance check
list, check and maintenance and special tools are described.
QMechanism
Information on the construction and function are included. This part should be
understood before proceeding with troubleshooting, disassembling and servicing.
Refer to Diesel Engine / Tractor Mechanism Workshop Manual (Code No. 9Y021-
01876 / 9Y021-18201) for the one which has not been described to this workshop
manual.
QServicing
Information on the troubleshooting, servicing specification lists, tightening torque,
checking and adjusting, disassembling and assembling, and servicing which cover
procedures, precautions, factory specifications and allowable limits.
Regarding the failures of Common Rail System (CRS), refer to “DIAGNOSIS
MANUAL (CD-ROM)” at the end of this manual.
All information illustrations and specifications contained in this manual are based on
the latest product information available at the time of publication.
The right is reserved to make changes in all information at any time without notice.
Due to covering many models of this manual, information or picture being used, have
not been specified as one model.
July 2008
© KUBOTA Corporation 2008
KiSC issued 07, 2008 A
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1
M128X, WSM SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
BEFORE SERVICING AND REPAIRING
• Read all instructions and safety instructions in this
manual and on your machine safety decals.
• Clean the work area and machine.
• Park the machine on a firm and level ground, and set
the parking brake.
• Lower the implement to the ground.
• Stop the engine, and remove the key.
• Disconnect the battery negative cable.
• Hang a “DO NOT OPERATE” tag in operator
station.
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 repair or use
this unit.
DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
QIMPORTANT : Indicates that equipment or property damage could result if instructions are not
followed.
QNOTE : Gives helpful information.
KiSC issued 07, 2008 A
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2
M128X, WSM SAFETY INSTRUCTIONS
SAFETY STARTING
• Do not start the engine by shorting across starter
terminals or bypassing the safety start switch.
• Do not alter or remove any part of machine safety
system.
• Before starting the engine, make sure that all shift
levers are in neutral positions or in disengaged
positions.
• Never start the engine while standing on ground.
Start the engine only from operator’s seat.
SAFETY WORKING
• Do not work on the machine while under the influence
of alcohol, medication, or other substances or while
fatigued.
• Wear close fitting clothing and safety equipment
appropriate to the job.
• Use tools appropriate to the work. Makeshift tools,
parts, and procedures are not recommended.
• When servicing is performed together by two or more
persons, take care to perform all work safely.
• Do not work under the machine that is supported
solely by a jack. Always support the machine by
safety stands.
• Do not touch the rotating or hot parts while the engine
is running.
• Never remove the radiator cap while the engine is
running, or immediately after stopping. Otherwise, hot
water will spout out from radiator. Only remove
radiator cap when cool enough to touch with bare
hands. Slowly loosen the cap to first stop to relieve
pressure before removing completely.
• Escaping fluid (fuel or hydraulic oil) under pressure
can penetrate the skin causing serious injury. Relieve
pressure before disconnecting hydraulic or fuel lines.
Tighten all connections before applying pressure.
• Do not open high-pressure fuel system.
High-pressure fluid remaining in fuel lines can cause
serious injury. Do not disconnect or attempt repair
fuel lines, sensors, or any other components between
the high-pressure fuel pump and injectors on engines
with high pressure common rail fuel system.
• High voltage exceeding 100 V is generated in the
ECU, and is applied to the injector.
Pay sufficient caution to electric shock when
performing work activities.
KiSC issued 07, 2008 A
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3
M128X, WSM SAFETY INSTRUCTIONS
AVOID FIRES
• Fuel is extremely flammable and explosive under
certain conditions. Do not smoke or allow flames or
sparks in your working area.
• To avoid sparks from an accidental short circuit,
always disconnect the battery negative cable first and
connect it last.
• Battery gas can explode. Keep sparks and open
flame away from the top of battery, especially when
charging the battery.
• Make sure that no fuel has been spilled on the engine.
VENTILATE WORK AREA
• If the engine must be running to do some work, make
sure the area is well ventilated. Never run the engine
in a closed area. The exhaust gas contains poisonous
carbon monoxide.
PREVENT ACID BURNS
• Sulfuric acid in battery electrolyte is poisonous. It is
strong enough to burn skin, clothing and cause
blindness if splashed into eyes. Keep electrolyte
away from eyes, hands and clothing. If you spill
electrolyte on yourself, flush with water, and get
medical attention immediately.
DISPOSE OF FLUIDS PROPERLY
• Do not pour fluids into the ground, down a drain, or
into a stream, pond, or lake. Observe relevant
environmental protection regulations when disposing
of oil, fuel, coolant, electrolyte and other harmful
waste.
KiSC issued 07, 2008 A
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9
M128X, WSM SPECIFICATIONS
SPECIFICATIONS
Note : * Manufacture’s estimate
** At lower link and with links horizontal.
The company reserves the right to change the specifications without notice.
W10281170
Model M128X
Engine
Model V6108-T1
Type Direct injection, W / turbocharger, water-cooled, 4-cycle diesel
Number of cylinders 4
Total displacement 6124 cm3(373.7 cu.in.)
Bore and stroke 118 ×140 mm (4.65 ×5.51 in.)
Net power 94.1 kW (128 HP)*
PTO power
(factory observe) 83 kW (110 HP)* / 2200 min−1(rpm)
Maximum torque 532 N·m (54.2 kgf·m, 392 lbf·ft) / 1100 to 1300 min−1(rpm)
Battery capacity 12 V, 160 Ah at 20 hours, 1090CCA
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2 [above −10 °C (14 °F)]
Fuel tank capacity 190 L (50.2 U.S.gal., 41.8 Imp.gals)
Engine oil capacity 17.8 L (18.8 U.S.qts,15.7 Imp.qts)
Coolant capacity 15.0 L (15.8 U.S.qts,13.2 Imp.qts)
Dimensions
Overall length 4455 mm (175.4 in.)
Overall width (min. tread) 2175 mm (85.63 in.)
Overall height 2750 mm (108.3 in.)
Wheel base 2690 mm (105.9 in.)
Tread Front 1660 to 1770 mm (65.36 to 69.68 in.)
Rear 1660 to 1755 mm (65.36 to 69.09 in.)
Crop clearance 515 mm (20.3 in.)
Weight 4410 kg (9722 lbs)
Travelling system
Standard tire size Front 420 / 70R24
Rear 520 / 70R38
Clutch Multiple wet disc, Electronic Hydraulically operated
Steering Hydrostatic power steering
Braking system Hydraulically operated wet disk
Differential Bevel gears with differential lock (Front, Rear)
Hydraulic system
Hydraulic control system Electronic draft control
Pump capacity 77.0 L (20.3 U.S.gals, 16.9 Imp.gals) / min.
Three point hitch SAE Category 2
Max. lifting force
At lift points** 5800 kg (12790 lbs) at lower link end with links horizontal
24 in. behind lift
points 4900 kg (10800 lbs)
Remote hydraulic control Two remote valve with detent and self-canceling
System pressure 19.6 MPa (200 kgf/cm2, 2840 psi)
Traction system HIGH-hitchhand Piton-Fixe
PTO Live PTO
(Indipen-dent)
Direction of
turning Clockwise, viewed from tractor rear
Standard PTO 6 splines : 540 min-1 / 1994 min-1
1000 min-1 / 2050 min-1
KiSC issued 07, 2008 A
10
M128X, WSM TRAVELING SPEEDS
TRAVELING SPEEDS
(At rated engine rpm)
The company reserves the right to change the specifications without notice.
* At maximum engine rpm.
W1035065
Model M128X
Tire size (Rear) 520 / 70R38
Range Speed (km/h)
C1 0.37
C2 0.47
C3 0.59
C4 0.79
C5 0.91
C6 1.15
C7 1.44
C8 1.94
12.07
22.62
33.29
44.41
55.07
66.42
78.06
8 10.80
97.24
10 9.16
11 11.50
12 15.43
13 17.71
14 22.42
15 28.15
16* 39.64
KiSC issued 07, 2008 A
11
M128X, WSM DIMENSIONS
DIMENSIONS
KiSC issued 07, 2008 A
G GENERAL
KiSC issued 07, 2008 A
CONTENTS
GENERAL
1. TRACTOR IDENTIFICATION ......................................................................... G-1
2. GENERAL PRECAUTIONS ............................................................................ G-2
3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .. G-3
[1] WIRING...................................................................................................... G-3
[2] BATTERY................................................................................................... G-5
[3] FUSE.......................................................................................................... G-5
[4] CONNECTOR ............................................................................................ G-5
[5] HANDLING OF CIRCUIT TESTER......................................................... G-6
4. LUBRICANTS FUEL AND COOLANT .......................................................... G-7
5. TIGHTENING TORQUES ............................................................................... G-9
[1] GENERAL USE SCREWS, BOLTS AND NUTS................................... G-9
[2] STUD BOLTS............................................................................................ G-9
[3] HYDRAULIC FITTINGS .......................................................................... G-10
6. MAINTENANCE ............................................................................................. G-11
7. CHECK AND MAINTENANCE ..................................................................... G-14
[1] DAILY CHECK ........................................................................................ G-14
[2] CHECK POINTS OF INITIAL 50 HOURS ........................................... G-15
[3] CHECK POINTS OF EVERY 50 HOURS ........................................... G-18
[4] CHECK POINTS OF EVERY 100 HOURS ......................................... G-19
[5] CHECK POINTS OF EVERY 200 HOURS ......................................... G-25
[6] CHECK POINTS OF EVERY 300 HOURS ......................................... G-28
[7] CHECK POINTS OF EVERY 400 HOURS ......................................... G-29
[8] CHECK POINTS OF EVERY 600 HOURS ......................................... G-31
[9] CHECK POINT OF EVERY 800 HOURS ........................................... G-32
[10]CHECK POINT OF EVERY 1500 HOURS ......................................... G-32
[11]CHECK POINTS OF EVERY 3000 HOURS ....................................... G-32
[12]CHECK POINTS OF EVERY 1 YEAR ................................................ G-32
[13]CHECK POINTS OF EVERY 2 YEARS.............................................. G-33
[14]OTHERS .................................................................................................. G-36
8. SPECIAL TOOLS.......................................................................................... G-41
[1] SPECIAL TOOLS FOR ENGINE .......................................................... G-41
[2] SPECIAL TOOLS FOR TRACTOR....................................................... G-49
9. TIRES............................................................................................................. G-62
[1] TYPE OF TIRES .................................................................................... G-62
[2] TREAD ADJUSTMENT........................................................................... G-62
(1) Front Wheel ....................................................................................... G-62
(2) Rear Wheel ........................................................................................ G-64
[3] WHEEL HUB........................................................................................... G-65
[4] TIRE PRESSURE ................................................................................... G-65
[5] TIRE LIQUID INJECTION ...................................................................... G-66
10. IMPLEMENT LIMITATIONS.......................................................................... G-69
KiSC issued 07, 2008 A
G-1
M128X, WSM G GENERAL
1. TRACTOR IDENTIFICATION
When contacting your local KUBOTA distributor, always specify
engine serial number, tractor serial number and hourmeter reading.
W1010594
(1) Tractor Identification Plate
(2) Tractor Serial Number
(3) Engine Serial Number
(4) Cabin Identification Plate
(Cabin Serial Number)
KiSC issued 07, 2008 A
G-2
M128X, WSM G GENERAL
2. GENERAL PRECAUTIONS
• During disassembly, carefully arrange removed parts in a clean
area to prevent confusion later. Screws, bolts and nuts should be
installed in their original position to prevent reassembly errors.
• When special tools are required, use KUBOTA genuine special
tools. Special tools which are not frequently used should be
made according to the drawings provided.
• Before disassembling or servicing electrical wires, always
disconnect the ground cable from the battery first.
• Remove oil and dirt from parts before measuring.
• Use only KUBOTA genuine parts for parts replacement to
maintain machine performance and to assure safety.
• Gaskets and O-rings must be replaced during reassembly.
Apply grease to new O-rings or oil seals before assembling.
See the figure left side.
• When reassembling external snap rings or internal snap rings,
they must be positioned so that sharp edge faces against the
direction from which a force is applied. See the figure left side.
• When inserting spring pins, their splits must face the direction
from which a force is applied. See the figure left side.
• To prevent damage to the hydraulic system, use only specified
fluid or equivalent.
W1010904
(1) Grease
(2) Force
(3) Sharp Edge
(4) Axial Force
(5) Rotating Movement
(A) External Snap Ring
(B) Internal Snap Ring
KiSC issued 07, 2008 A
G-3
M128X, WSM G GENERAL
3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS
AND WIRING
To ensure safety and prevent damage to the machine and
surrounding equipment, heed the following precautions in handling
electrical parts and wiring.
IMPORTANTQ
• Check electrical wiring for damage and loosened
connection every year. To this end, educate the customer to
do his or her own check and at the same time recommend
the dealer to perform periodic check for a fee.
• Do not attempt to modify or remodel any electrical parts and
wiring.
• When removing the battery cables, disconnect the negative
cable first. When installing the battery cables, connect the
positive cable first.
W1011114
[1] WIRING
• Securely tighten wiring terminals.
W1011216
• Do not let wiring contact dangerous part.
W1011313
• Repair or change torn or aged wiring immediately.
W1012292
(1) Negative Terminal (2) Positive Terminal
(1) Correct
(Securely Tighten)
(2) Incorrect
(Loosening Leads to Faulty Contact)
(1) Dangerous Part
(2) Wiring (Incorrect)
(3) Wiring (Correct)
(4) Dangerous Part
(1) Aged
(2) Torn
(3) Insulating Vinyl Tape
KiSC issued 07, 2008 A
G-4
M128X, WSM G GENERAL
• Securely insert grommet.
W1011388
• Securely clamp, being careful not to damage wiring.
W1011458
• Clamp wiring so that there is no twist, unnecessary sag, or
excessive tension, except for movable part, where sag be
required.
W1011587
• In installing a part, take care not to get wiring caught by it.
W1011670
• After installing wiring, check protection of terminals and clamped
condition of wiring, only connect battery.
W1011735
(1) Grommet (A) Correct
(B) Incorrect
(1) Clamp
• Wind Clamp Spirally
(2) Wire Harness
(3) Clamp
(4) Welding Dent
(1) Wiring
(2) Clamp
(A) Correct
(B) Incorrect
(1) Wiring (A) Incorrect
(1) Cover
• Securely Install Cover
KiSC issued 07, 2008 A
G-5
M128X, WSM G GENERAL
[2] BATTERY
• Take care not to confuse positive and negative terminals.
• When removing battery cable, disconnect negative wire first.
When installing battery cable, check for polarity and connect
positive wire first.
• Do not install any battery with capacity other than is specified
(Ah).
• After connecting cable to battery terminals, apply grease to them
and securely install terminal covers on them.
• Do not allow dirt and dust to collect on battery.
CAUTION
• Take care not to let battery liquid spill on your skin and
clothes. If contaminated, wash it off with water immediately.
• Before recharging the battery, remove it from the machine.
• Before recharging, remove cell caps.
• Do recharging in a well-ventilated place where there is no
open flame nearby, as hydrogen gas and oxygen are formed.
W1011816
[3] FUSE
• Use fuses with specified capacity.
Neither too large or small capacity fuse is acceptable.
• Never use steel or copper wire in place of fuse.
• Do not install working light, radio set, etc. on machine which is not
provided with reserve power supply.
• Do not install accessories if fuse capacity of reserve power
supply is exceeded.
W1012092
[4] CONNECTOR
• For connector with lock, push lock to separate.
W1012211
• In separating connectors, do not pull wire harnesses.
• Hold connector bodies to separate.
W1012272
(1) Fuse (2) Slow Blow Fuse
(A) Push
(A) Correct (B) Incorrect
KiSC issued 07, 2008 A
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