wsm M108S Workshop Manual

WORKSHOP MANUAL

KiSC issued 05, 2012 A

TRACTOR

M108S

TO THE READER

KiSC issued 05, 2012 A

This Workshop Manual has been prepared to provide servicing personnel with
information on the mechanism, service and maintenance of M108S. It is divided into
three parts, “General", “Mechanism” and “Servicing”.

Q General

Information on the tractor identification, the general precautions, maintenance check
list, check and maintenance and special tools are described.

Q Mechanism

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. 9Y021­01874 / 9Y021-18201) for the one which has not been described to this workshop
manual.

Q Servicing

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. (Code No. 9Y130-00142)

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.

May 2007

© KUBOTA Corporation 2007

M108S, WSM

SAFETY FIRST

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS

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.

Q IMPORTANT : Indicates that equipment or property damage could result if instructions are not

followed.

Q NOTE : Gives helpful information.

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.

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M108S, WSM

KiSC issued 05, 2012 A

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 or
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 injector.
Pay sufficient caution to electric shock when
performing work activities.

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M108S, WSM

KiSC issued 05, 2012 A

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.

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

PREPARE FOR EMERGENCIES

• Keep a first aid kit and fire extinguisher handy at all
times.

• Keep emergency numbers for doctors, ambulance
service, hospital and fire department near your
telephone.

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

SAFETY DECALS

The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on
the machine, replace it. The decal part number is listed in the parts list.

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

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M108S, WSM

KiSC issued 05, 2012 A

SAFETY INSTRUCTIONS

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M108S, WSM

KiSC issued 05, 2012 A

SPECIFICATIONS

SPECIFICATIONS

Model

Model V3800-CR-TI
Type Vertical, water-cooled, 4-cycle diesel engine
No. of cylinder 4
Total displacement 3769 cm
Bore and stroke 100 × 120 mm (3.9 x 4.7 in.)
Net power 80.6 kW (108 HP)* / 2600 min

Engine

Dimensions

Weight *2 3890 kg (8558 lbs)

Traveling
system

Hydraulic
system

PTO system

Traction system Swing drawbar, adjustable in direction

NOTE : * Manufacture's estimate.

*1 The company reserves the right to change the specifications without notice.

*2 W/O cast iron disks for rear wheels.
*3 Cast iron disks available for wheels.
*4 At lower link end with links horizontal.

PTO power *1
(factory observed)

Maximum torque 366.4 N·m (37.3 kgf·m, 270.2 lbf·ft) / 1400 to 1600 min
Battery 12 V, RC, 160 min, CCA 900 A
Fuel Diesel fuel No.1 [below −10 °C (14 °F), Diesel fuel No.2-D [above −10 °C (14 °F)]
Fuel tank 175 L (46.2 U.S.gals, 38.5 lmp.gals)
Engine crankcase 10.7 L (11.3 U.S.qts, 9.4 lmp.qts)
Engine coolant 9.6 L (10.1 U.S.qts, 8.4 lmp.qts)
Overall length 4145 mm (163 in.)
Overall width (Minimum tread) 2010 mm (79.13 in.)
Overall height 2680 mm (106 in.)
Wheel base 2435 mm (95.9 in.)

Tread

Minimum ground clearance 435 mm (17.1 in.) (drawbar bracket)

Standard
tire size *3

Clutch Multiple wet disc hydraulic
Steering Full hydraulic power steering
Transmission Hydraulic shuttle shift, fully synchronized main shift, 32F / 32R, If equip creep gear 48F / 48R

Brake

Differential Bevel gears with differential lock (Front, Rear)
Hydraulic control system Position, draft and mix control
Pump capacity 65.0 L/min. (17.2 U.S.gals./min., 14.3 lmp.gals./min.)
Three point hitch Category II

Max. lifting
force

System pressure 19.6 MPa (200 kgf/cm
Independent clutch Wet type, multiple discs

Live PTO

Front 1565 to 1675 mm (61.62 to 65.94 in.)
Rear 1505 to 1865 mm (59.26 to 73.42 in.)

Front 340 / 85R24 (13.6R24)
Rear 460 / 85R34 (18.4R34)

Traveling Wet type multiple discs (hydraulic)
Parking Wet type multiple discs (mechanical)

At lifting point *4

24 in. behind
lifting point *4

Direction of
turning

PTO speed

2100 kg (4630 lbs) at 610 mm (24 in.) behind lifting point

71.6 kW (96 HP)*1 / 2600 min

2700 kg (5952 lbs) at lower link end with link horizontal

4000 kg (8818 lbs) with 2 assist cylinder (option)

3400 kg (7490 lbs) with 2 assist sylinder (option)

Clockwise, viewed from tractor rear

6 spline : 540 min

21 spline : 1000 min

M108S

4WD

3

(230.0 cu.in.)

−1

(rpm)

−1

(rpm)

2

, 2847 psi)

-1

(rpm) at 2205 engine min-1(rpm)

-1

(rpm) at 2210 engine min-1(rpm)

−1

(rpm)

W10295600

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M108S, WSM

KiSC issued 05, 2012 A

TRAVELING SPEEDS

Model M108S

Tire size (Rear) 460 / 85R34 (18.4R34)

Transmission type with Dual speed

Shuttle shift

lever

Forward

The company reserves the right to change the specifications without notice.
* At maximum engine rpm.

Range gear shift

lever

CREEP
(option)

L

H

Main gear shift

lever

1 0.36 (0.22) 0.30 (0.19)
2 0.45 (0.28) 0.38 (0.24)
3 0.57 (0.35) 0.47 (0.29)
4 0.72 (0.45) 0.60 (0.37)
1 0.92 (0.57) 0.76 (0.47)
2 1.18 (0.73) 0.97 (0.60)
3 1.45 (0.90) 1.20 (0.74)
4 1.84 (1.14) 1.52 (0.944)
1 2.02 (1.26) 1.67 (1.04)
2 2.57 (1.60) 2.13 (1.32)
3 3.17 (1.97) 2.62 (1.63)
4 4.02 (2.50) 3.33 (2.07)
1 5.15 (3.20) 4.26 (2.65)
2 6.56 (4.08) 5.42 (3.37)
3 8.08 (5.02) 6.68 (4.15)
4 10.27 (6.381) 8.49 (5.28)
1 7.05 (4.38) 5.83 (3.62)
2 8.98 (5.58) 7.43 (4.62)
3 11.06 (6.872) 9.15 (5.69)
4 14.06 (8.74) 11.63 (7.22)
1 17.99 (11.18) 14.87 (9.24)
2 22.92 (14.24) 18.94 (11.77)
3 28.22 (17.54) 23.33 (14.50)
4 38.64 (24.01)* 29.66 (18.43)

Hi Lo

km/h (mph) km/h (mph)

TRAVELING SPEEDS

(At rated engine rpm)

W1037333

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M108S, WSM

KiSC issued 05, 2012 A

Model M108S

Tire size (Rear) 460 / 85R34 (18.4R34)

Transmission type with Dual speed

Shuttle shift

lever

Range gear shift

lever

Main gear shift

lever

Hi Lo

km/h (mph) km/h (mph)
1 0.36 (0.22) 0.30 (0.19)
2 0.46 (0.29) 0.38 (0.24)
3 0.57 (0.35) 0.47 (0.29)

CREEP

(option)

4 0.73 (0.45) 0.60 (0.37)
1 0.93 (0.58) 0.77 (0.48)
2 1.19 (0.74) 0.98 (0.61)
3 1.46 (0.91) 1.21 (0.75)
4 1.86 (1.16) 1.53 (0.951)
1 2.04 (1.27) 1.68 (1.04)
2 2.59 (1.61) 2.14 (1.33)

Reverse

3 3.19 (1.98) 2.64 (1.64)
4 4.06 (2.52) 3.36 (2.09)

L

1 5.19 (3.23) 4.29 (2.67)
2 6.61 (4.11) 5.47 (3.40)
3 8.15 (5.06) 6.74 (4.19)
4 10.36 (6.437) 8.56 (5.32)
1 7.11 (4.42) 5.88 (3.65)
2 9.06 (5.63) 7.49 (4.65)
3 11.16 (6.934) 9.22 (5.73)
4 14.18 (8.81) 11.73 (7.29)

H

1 18.15 (11.28) 15.00 (9.32)
2 23.11 (14.36) 19.11 (11.87)
3 28.47 (17.69) 23.53 (14.62)
4 38.97 (24.21)* 29.92 (18.59)

The company reserves the right to change the specifications without notice.
* At maximum engine rpm.

TRAVELING SPEEDS

(At rated engine rpm)

W1038042

12

M108S, WSM

KiSC issued 05, 2012 A

DIMENSIONS

DIMENSIONS

13

G GENERAL

KiSC issued 05, 2012 A

GENERAL

KiSC issued 05, 2012 A

CONTENTS

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 POINT OF EVERY 300 HOURS ........................................... G-29

[7] CHECK POINTS OF EVERY 400 HOURS......................................... G-30

[8] CHECK POINTS OF EVERY 600 HOURS......................................... G-30

[9] CHECK POINT OF EVERY 800 HOURS ........................................... G-32

[10]CHECK POINT EVERY 1500 HOURS ................................................ G-32

[11]CHECK POINTS EVERY 3000 HOURS.............................................. G-32

[12]CHECK POINTS OF EVERY 1 YEAR ................................................ G-33

[13]CHECK POINTS OF EVERY 2 YEARS.............................................. G-34

[14]OTHERS .................................................................................................. G-38

8. SPECIAL TOOLS.......................................................................................... G-43

[1] SPECIAL TOOLS FOR ENGINE .......................................................... G-43

[2] SPECIAL TOOLS FOR TRACTOR....................................................... G-54

9. TIRES............................................................................................................. G-66

[1] TYPE OF TIRES .................................................................................... G-66

[2] TREAD ADJUSTMENT........................................................................... G-66

(1) Front Wheel ....................................................................................... G-66

(2) Rear Wheel ........................................................................................ G-68

[3] WHEEL HUB........................................................................................... G-69

[4] TIRE PRESSURE ................................................................................... G-69

[5] TIRE LIQUID INJECTION ...................................................................... G-70

10. IMPLEMENT LIMITATIONS.......................................................................... G-74

M108S, WSM

KiSC issued 05, 2012 A

1. TRACTOR IDENTIFICATION

When contacting your local KUBOTA distributor, always specify

engine serial number, tractor serial number and hour meter reading.

(1) Tractor Identification Plate
(2) Tractor Serial Number

G GENERAL

(3) CABIN Identification Plate

(CABIN Serial Number)

(4) Engine Serial Number

W1010602

G-1

M108S, WSM

KiSC issued 05, 2012 A

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.

(1) Grease
(2) Force
(3) Sharp Edge
(4) Axial Force
(5) Rotating Movement

G GENERAL

(A) External Snap Ring
(B) Internal Snap Ring

W1010904

G-2

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

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.

• 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.

(1) Negative Terminal (2) Positive Terminal

W1011114

[1] WIRING

• Securely tighten wiring terminals.

(1) Correct

(Securely Tighten)

(2) Incorrect

(Loosening Leads to Faulty Contact)

W1011216

• Do not let wiring contact dangerous part.

(1) Dangerous Part
(2) Wiring (Incorrect)

(3) Wiring (Correct)
(4) Dangerous Part

• Repair or change torn or aged wiring immediately.

(1) Aged
(2) Torn

(3) Insulating Vinyl Tape

W1011313

W1012292

G-3

M108S, WSM

KiSC issued 05, 2012 A

• Securely insert grommet.

(1) Grommet (A) Correct

(B) Incorrect

• Securely clamp, being careful not to damage wiring.

(1) Clamp

• Wind Clamp Spirally

(2) Wire Harness

(3) Clamp
(4) Welding Dent

G GENERAL

W1011388

W1011458

• Clamp wiring so that there is no twist, unnecessary sag, or
excessive tension, except for movable part, where sag be
required.

(1) Wiring
(2) Clamp

(A) Correct
(B) Incorrect

W1011587

• In installing a part, take care not to get wiring caught by it.

(1) Wiring (A) Incorrect

W1011670

• After installing wiring, check protection of terminals and clamped
condition of wiring, only connect battery.

(1) Cover

• Securely Install Cover
W1011735

G-4

M108S, WSM

CAUTION

KiSC issued 05, 2012 A

[2] BATTERY

[3] FUSE

G GENERAL

• Take care not to confuse positive and negative terminal posts.

• When removing battery cables, disconnect negative cable first.
When installing battery cables, check for polarity and connect
positive cable first.

• Do not install any battery with capacity other than is specified
(Ah).

• After connecting cables to battery terminal posts, apply high
temperature grease to them and securely install terminal covers
on them.

• Do not allow dirt and dust to collect on battery.

• 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

[4] CONNECTOR

• 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.

(1) Fuse (2) Slow Blow Fuse

W1012092

• For connector with lock, push lock to separate.

(A) Push

W1012211

• In separating connectors, do not pull wire harnesses.

• Hold connector bodies to separate.

(A) Correct (B) Incorrect

W1012272

G-5

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

• Use sandpaper to remove rust from terminals.

• Repair deformed terminal. Make certain there is no terminal
being exposed or displaced.

(1) Exposed Terminal
(2) Deformed Terminal

(3) Sandpaper
(4) Rust

W1012346

• Make certain that there is no female connector being too open.

(A) Correct (B) Incorrect

W1012430

• Make certain plastic cover is large enough to cover whole
connector.

(1) Cover (A) Correct

[5] HANDLING OF CIRCUIT TESTER

• Use tester correctly following manual provided with tester.

• Check for polarity and range.

(B) Incorrect

W1012519

W1012684

G-6

M108S, WSM

KiSC issued 05, 2012 A

4. LUBRICANTS, FUEL AND COOLANT

Place Capacity Lubricants, fuel and coolant

1 Fuel tank

Engine block
radiator

2Coolant

Recovery
tank

3 Washer liquid

4 Engine crankcase (with filter)

5 Transmission case

Brake system

6

(Reservoir and lines)

7 Front differential case oil

8 Front axle gear case oil

* KUBOTA original transmission hydraulic fluid.
** PAG : Polyalkyleneglycol (Synthetic oil)

175 L

46.2 U.S.gals

38.4 lmp.gals

9.6 L

10 U.S.qts

8.4 lmp.qts

1.1 L

1.2 U.S.qts

0.97 lmp.qts

1.3 L

1.4 U.S.qts

1.1 lmp.qts

10.7 L

11.3 U.S.qts

9.41 lmp.qts

60.0 L

63.4 U.S.qts

52.7 lmp.qts

0.3 L

0.32 U.S.qts

0.26 lmp.qts

7.0 L

7.4 U.S.qts

6.2 lmp.qts

3.5 L

3.7 U.S.qts

3.1 lmp.qts

No. 2-D diesel fuel
No. 1-D diesel fuel if temperature is
below −10 °C (14 °F)

Fresh clean water with anti-freeze

Automobile washer liquid

Engine oil: API service classification:
CF or better (EGR type engine)
Below 0 °C (32 °F) :
SAE10W, 10W-30 or 15W-40
0 to 25 °C (32 to 77 °F):
SAE20, 10W-30 or 15W-40
Above 25 °C (77 °F):
SAE30, 10W-30 or 15W-40

KUBOTA UDT or KUBOTA SUPER
UDT fluid*

KUBOTA UDT or SUPER UDT fluid*
or Turbine oil 32 (see below)
[regular type, multipurpose straight
mineral oil
Mobile DTE Oil #32
TEXACO Regal Oil #32
CHEVRON-GST Oil #32
TERESSO Oil #32]
Never use automotive brake oil.

KUBOTA UDT or KUBOTA SUPER
UDT fluid* or SAE80, 90 gear oil

G GENERAL

G-7

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Greasing

Place No. of greasing point Capacity Type of grease

Top link 2
Top link bracket 2
Lift rod 3

9

Front axle gear case support 2
Front axle support 2

Until grease
overflow

Multipurpose
grease NLGI-2 or
NLGI-1 (GC-LB)

Steering joint shaft 1
Battery terminal 2 A small amount

• Engine Oil : Oil used in the engine should have an American Petroleum Institute (API) service classification
and Proper SAE Engine Oil according to the ambient temperature as shown above.

• With the emission control now in effect, the CF-4 and CG-4 lubricating oils have been developed for use
of a low-sulfur fuel on on-road vehicle engines. When an off-road vehicle engine runs on a high-sulfur fuel,
it is advisable to employ the CF, CD or CE lubricating oil with a high total base number. If the CF-4 or CG­4 lubricating oil is used with a high-sulfur fuel, change the lubricating oil at shorter intervals.

• Lubricating oil recommended when a low-sulfur or high-sulfur fuel is employed.
O : Recommendable X : Not Recommendable

Lubricating oil

class

Low-sulfur High-sulfur

Fuel

Remark

CF PPTBN ≥ 10

CF-4 P X

CG-4 P X

CH-4 P X

CI-4 P X

• Class CF-4, CG-4 and CH-4 engine oils cannot be used on EGR (Exhaust Gas Re-circulation) type engines.

• The CJ-4 engine oil is intended for DPF (Diesel Particulate Filter) type engines, and cannot be used on this tractor.

• Transmission Oil : The oil used to lubricate the transmission is also used as hydraulic fluid. To insure
proper operation of the hydraulic system and complete lubrication of the transmission, it is important that
a multi-grade transmission fluid be used in this system. We recommend the use of KUBOTA SUPER UDT
fluid for optimum protection and performance.
Do not mix different brands together.

• Indicated capacity of water and oil are manufacture’s estimate.

G-8

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

5. TIGHTENING TORQUES

[1] GENERAL USE SCREWS, BOLTS AND NUTS

Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be tightened

according to the table below.

Indication on top of

bolt

Material of bolt SS400, S20C S43C, S48C

Material of opponent

part

Unit
Diameter

M6

(6 mm, 0.24 in.)

M8

(8 mm, 0.31 in.)

M10

10 mm, 0.39 in.)

(

M12

(12 mm, 0.47 in.)

M14

(14 mm, 0.55 in.)

M16

(16 mm, 0.63 in.)

M18

(18 mm, 0.71 in.)

M20

(20 mm, 0.79 in.)

No-grade or 4T 7T 9T

SCr435,

SCM435

Ordinariness Aluminum Ordinariness Aluminum Ordinariness

N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft

7.9
to

9.3

18

to

20
40

to

45
63

to

72

108

to

125
167

to

191
246

to

284
334

to

392

0.80

0.95

11. 0

12.8

17.0

19.5

25.0

29.0

34.0

40.0

to

1.8
to

2.1

4.0
to

4.6

6.4
to

7.4

to

to

to

to

5.8
to

6.8

13

to

15
29

to

33
47

to

53

79.6
to

92.

123

to

141
181

to

209
246

to

289

7.9

0.80

to

to

8.8

0.90

17

1.7

to

to

19

2.0

32

3.2

to

to

34

3.5

–––78to

–––

5

–––

–––

–––

5.8
to

6.5

13

to

14
24

to

25

9.81
to

11. 2
24

to
27
48
to
55

90

124

to

147
197

to

225
275

to

318
368

to

431

1.00
to

1.15

2.4
to

2.8

4.9
to

5.7

7.9
to

9.2

12.6
to

15.0

20.0
to

23.0

28.0
to

32.5

37.5
to

44.0

7.24
to

8.31

18

to

20
36

to

41
58

to

66

91.2
to

108
145

to

166
203

to

235
272

to

318

7.9

0.80

to

8.8

0.90

18

to
20
40

to
44

63

to
72

––

–––

–––

––

to

1.8
to

2.1

4.0
to

4.5

6.4
to

7.4

5.8
to

6.5

13

to

15
29

to

32
47

to

53

–

–

12.3
to

14.2

30

to

34
61

to

70

103

to

117
167

to

196
260

to

304
344

to

402
491

to

56

8

1.25
to

1.45

0

3.
to

3.5

6.2
to

7.2

10.5
to

12.0

17.0
to

20.0

26.5
to

31.0

35.0
to

41.0

50.0
to

58.0

W1034542

9.05
to

10.4

22

to

25
45

to

52

76.0
to

86.7

123

to

144
192

to

224
254

to

296
362

to

419

[2] STUD BOLTS

Material of opponent

part

Unit
Diameter

M8

(8 mm, 0.31 in.)

M10

(10 mm, 0.39 in.)

M12

(12 mm, 0.47 in.)

M14

(14 mm, 0.55 in.)

M16

(16 mm, 0.63 in.)

M18

(18 mm, 0.71 in.)

Ordinariness Aluminum

N·m kgf·m lbf·ft N·m kgf·m lbf·ft

12

to

15
25

to

31

29.5
to

49.0

62

to

73

98.1
to

112
172

to

201

1.2
to

1.6

2.5
to

3.2

3.0
to

5.0

6.3
to

7.5

10.0
to

11. 5

17.5
to

20.5

8.7

8.9

to

to

11

11

18

20

to

to

23

25

21.7
to

31.4 3.2 23.1

36.1

46

to

–––

54

72.4
to

83.1

127

148

–––

to

––

0.90
to

1.2

2.0
to

2.6

6.5
to

8.6

15

to

18

–

W1048139

G-9

M108S, WSM

KiSC issued 05, 2012 A

[3] HYDRAULIC FITTINGS

Q Hydraulic Hose Fittings

G GENERAL

Hose size Thread size

02 1/8 13.8 to 15.6 1.40 to 1.60 10.2 to 11.5
03
04
05
06

Q Hydraulic Pipe Cap Nuts

Pipe size

φ4 × t1.0 20 to 29 2.0 to 3.0 15 to 21
φ6 × t1.0 25 to 34 2.5 to 3.5 18 to 25

φ8 × t1.0 30 to 39 3.0 to 4.0 22 to 28
φ10 × t1.0 40 to 49 4.0 to 5.0 29 to 36
φ12 × t1.5 49 to 68 5.0 to 7.0 37 to 50
φ15 × t1.6 108 to 117 11.0 to 12.0 79.6 to 86.7
φ18 × t1.6 108 to 117 11.0 to 12.0 79.6 to 86.7

Tightening torque

N·m kgf·m lbf·ft

1/4 23 to 27 2.3 to 2.8 17 to 20

3/8 46 to 52 4.6 to 5.4 34 to 39

W1014711

Tightening torque

N·m kgf·m lbf·ft

W1014848

Q Adaptors, Elbows and Nipples

Items Thread size

PF 1/8 45 to 53 4.5 to 5.5 33 to 39

POA-PF

(Nipple with O-ring)

PF 1/4 74 to 83 7.5 to 8.5 55 to 61
PF 3/8 93.2 to 102 9.50 to 10.5 68.8 to 75.9
PF 1/2 113 to 122 11.5 to 12.5 83.2 to 90.4
PF 1/8 23 to 26 2.3 to 2.7 17 to 19

POB-PF

PF 1/4 36 to 43 3.6 to 4.4 26 to 31

(Elbow with O-ring

and no nut)

PF 3/8 54 to 63 5.5 to 6.5 40 to 47
PF 1/2 74 to 83 7.5 to 8.5 55 to 61
PF 1/8 9.8 to 14 1.0 to 1.5 7.3 to 10
PF 1/4 30 to 34 3.0 to 3.5 22 to 25

Adaptor (NPT)

PF 3/8 49 to 68 5.0 to 7.0 37 to 50
PF 1/2 69 to 88 7.0 to 9.0 51 to 65

Tightening torque

N·m kgf·m lbf·ft

W1015484

G-10

M108S, WSM

KiSC issued 05, 2012 A

6. MAINTENANCE

G GENERAL

Indication on hour meter Since

No. Items

Engine start system Check

1

2 Wheel bolt torque Check ,,,,,,,,,,,,,,50 hrs G-18

Battery condition

3

Greasing –

4

Fan belt Adjust

5

Brake pedal Adjust

6

Parking brake lever

7

Air cleaner
element

8

[Double type]

Fuel line

9

Hydraulic oil filter

10

Toe-in

11

12 Fuel tank water

Oil cooler line

13

Power steering oil line

14

Radiator hose and clamp

15

Intake air line

16

Engine oil

17

Primary
element

Secondary
element

Check ,,,,,,,

Adjust ,,,,,,,

Clean ,,,,,,,

Replace

Replace 1 year G-20

Check

Replace

Replace +, , ,

Adjust ,,,

Drain

Check

Replace

Check

Replace

Check

Replace

Check

Replace

Change +, ,

50 100 150 200 250 300 350 400 450 500 550 600 650 700

,,,,,,,,,,,,,,50 hrs G-18

,,,,,,,

,,,,,,,

,,,,,,,

,,,,,,,

,,,

,,,

,,,

,,,

,,,

then

every

100

hrs

100

hrs

100

hrs

100

hrs

100

hrs

100

hrs

1 year *2 G-20

100

hrs

2

years

200

hrs

200

hrs

200

hrs

00

2

hrs

2

years

200

hrs

2

years

200

hrs

2

years

200

hrs

2

years

300

hrs

Impor

-tant

*4 G-19

*1 G-20

W1035769

Refer-

ence
page

G-24

G-21

G-21

G-23

G-20

G-20

G-16

G-26

G-26

G-

G-25

G-25

G-25

G-25

G-25

G-26

G-26

G-15

25

G-11

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Indication on hour meter Since

No. Items

Water separator Clean

18

Fuel filter Replace

19

Engine oil filter

20

Transmission fluid

21

Front differential case oil

22

Front axle gear case oil Change

23

24 King-pin pivot Adjust ,

Brake oil

25

26 Front axle pivot Adjust ,

Engine valve clearance

27

Fuel injection nozzle active

28

test

Supply pump Check

29

Turbo charger

30

Intake air heater

31

Cooling system Flush

32

33 Coolant Change

Parking brake cable Replace

34

Brake hose

35

Master cylinder kit

36

37 Equalizer kit

Brake seal 1 and 2

38

39 Fuel system

40 Brake system

41 Clutch housing water Drain G-38

42 Fuse Replace G-40

43 Light bulb Replace G-41

Replace +,

Change +,

Change +,

Change ,

Adjust

Check

Check

Check

Replace

Replace

Replace

Replace

Bleed

Bleed

50 100 150 200 250 300 350 400 450 500 550 600 650 700

,

,

+,

Service as required

then

every

400

hrs

400

hrs

600

hrs

600

hrs

600

hrs

600

hrs

600

hrs

600

hrs

600

hrs

800

hrs

1500

hrs

3000

hrs

3000

hrs

3000

hrs

2

years

2

years

2

years

2

years

2

years

2

years

2

years

Impor

-tant

Refer-

ence
page

G-30

G-30

G-15

G-16

G-17

G-17

G-32

G-31

G-31

1-S14

G-32

G-32

G-32

G-32

G-34

G-

G-37

G-37

G-37

G-37

G-37

G-38

G-39

W1033488

34

G-12

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Additional Items for CABIN Type

No. Items

Inner air filter Clean

1

Fresh air filter Clean

2

Air conditioner condenser Clean

3

Air conditioner drive belt

4

Air conditioner pipes and

5

hoses

CAB isolation cushion

6

Washer liquid

7

Refrigerant (gas)

8

• The jobs indicated by “+” must be done after the first 50 hours of operation.

• *1 : Air cleaner should be cleaned more often in dusty condition than in normal conditions.

• *2 : Every year or every 6 times of cleaning.

• *3 : Replace only if necessary.

• *4 : When the battery is used for less than 100 hours per year, check the battery condition by reading the indicator annually.

• The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA nonroad 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.

Adjust ,,,

Check 1 year G-33

Replace

Check 1 year G-33

Add

Check G-42

50 100 150 200 250 300 350 400 450 500 550 600 650 700

Indication on hour meter Since

,,,

,,,

,,,

Service as required

then

every

200

hrs

200

hrs

200

hrs

200

hrs

2

years

Impor

-tant

Refer-

ence
page

G-27

G-28

G-28

G-29

G-37

G-41

W1036925

G-13

M108S, WSM

CAUTION

KiSC issued 05, 2012 A

G GENERAL

7. CHECK AND MAINTENANCE

• Be sure to check and service the tractor on a flat place with engine shut off, the parking brake on and chock
the wheels.

[1] DAILY CHECK

To prevent trouble from occurring, it is important to know the condition of the tractor. Check the following items

before starting.

Checking

• Check areas where previous trouble was experienced.

• Walk around the tractor.

1. Check the tire pressure, and check for wear and damage.

2. Check for oil and water leak.

3. Check the engine oil level.

4. Check the transmission fluid level.

5. Check the coolant level.

6. Check the brake oil level.

7. Check the washer liquid level.

8. Check the water separator.

9. Check air cleaner evacuator valve (when used in a dusty place).

10.Check the condition of seat belt.

11.Check and clean the radiator screen and grill.

12.Check and clean the air conditioner condenser screen, and intercooler screen.

13.Check the nuts of tires are tight.

14.Check the number plate or SMV emblem for damage and replace as necessary if equipped.

15.Care of danger, warning and caution labels.

16.Clean around the exhaust manifold and the muffler of the engine.

• While sitting in the operator's seat.

1. Check the throttle pedal, brake pedal and clutch pedal.

2. Check the throttle lever and shuttle lever.

3. Check the parking brake.

4. Check the steering wheel.

5. Check the seat belt.

• Turning the key switch.

1. Check the performance of the easy checker lights.

2. Check the head lights, turn signal lights, hazard lights and other light equipment. Clean if necessary.

3. Check the performance of the meters and gauges.

• Starting the engine.

1. Check to see that the lights on the easy checker go off.

2. Check the color of the exhaust gas.

3. Check the brakes for proper operation.

G-14

M108S, WSM

CAUTION

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

[2] CHECK POINTS OF INITIAL 50 HOURS

Changing Engine Oil

• Before changing oil, be sure to stop the engine.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. To drain the used oil, remove the drain plugs (1) at the bottom of
the engine and drain the oil completely into the oil pan.
All the used oil can be drained out easily when the engine is still
warm.

2. After draining reinstall the drain plugs (1).

3. Fill with the new oil up to the upper notch on the dipstick.
Refer to “4. LUBRICANTS, FUEL AND COOLANT” in this
section.

Engine oil Capacity

G GENERAL

10.7 L

11.3 U.S.qts

9.41 Imp.qts

(1) Drain Plug
(2) Oil Inlet Plug
(3) Dipstick

(A) Oil level is acceptable within this

range.

W1039461

Replacing Engine Oil Filter

• Be sure to stop the engine before changing oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the oil filter (1).

2. Put a film of clean engine oil on rubber seal of new filter.

3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only.

4. After the new filter has been replaced, the engine oil normally
decreases a little. Make sure that the engine oil does not leak
through the seal and be sure to check the oil level on the dipstick.
Then, replenish the engine oil up to the prescribed level.

• To prevent serious damage to the engine, use only a
KUBOTA genuine filter.

(1) Engine Oil Filter

W1040148

G-15

M108S, WSM

CAUTION

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Changing Transmission Fluid

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. To drain the used oil, remove the drain plug (1) at the bottom of
the transmission case and drain the oil completely into the oil
pan.

2. After draining reinstall the drain plug.

3. Fill with the new KUBOTA SUPER UDT fluid up to the upper
notch on the dipstick (2).
Refer to “4. LUBRICANTS, FUEL AND COOLANT” in this
section.

4. After running the engine for a few minutes, stop it and check the
oil level again; add oil to prescribed level.

60.0 L

Transmission fluid Capacity

63.4 U.S.qts

52.7 Imp.qts

(1) Drain Plug
(2) Dipstick
(3) Oil Inlet

(A) Oil level is acceptable within the

range.

W1040339

Replacing Hydraulic Oil Filter

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the two oil filters (1).

2. Clean off metal filings with clean rags at the magnetic filters (2).

3. Put a film of clean transmission oil on rubber seal of new filters.

4. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only.

5. After the new filter has been replaced, the transmission fluid level
with decrease a little. Make sure that the transmission fluid does
not leak through the seal, and check the fluid level.
Top up if necessary.

• To prevent serious damage to the hydraulic system, use
only a KUBOTA genuine filter.

(1) Hydraulic Oil Filter
(2) Magnetic Filter
(3) Dipstick
(4) Oil Inlet

(A) Oil level is acceptable within the

range.

W1040732

G-16

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Changing Front Differential Case Oil

1. To drain the used oil, remove the drain and filling plug (1), (3) at
the front differential case and drain the oil completely into the oil
pan.

2. After draining reinstall the drain plug (1).

3. Remove the oil level check plug (2).

4. Fill with the new oil up to the lower rim of check plug port.
Refer to “4. LUBRICANTS, FUEL AND COOLANT” in this
section.

5. After filling reinstall the filling plug (3) and check plugs (2).

7.0 L

Front differential case oil Capacity

7.4 U.S.qts

6.2 Imp.qts

(1) Drain Plug
(2) Check Plug

(3) Filling Plug

W1041009

Changing Front Axle Gear Case Oil

1. To drain the used oil, remove the right and left drain plugs (2) and
filling plugs (1) at the front axle gear case and drain the oil
completely into the oil pan.

2. After draining reinstall the drain plugs (2).

3. Fill with the new oil up to the filling plug port.
Refer to “4. LUBRICANTS, FUEL AND COOLANT” in this
section.

4. After filling reinstall the filling plugs (1).

3.5 L

Front axle gear case oil Capacity

(1) Filling Plug (2) Drain Plug

3.7 U.S.qts

3.1 Imp.qts
for each side

W1041387

G-17

M108S, WSM

CAUTION

CAUTION

KiSC issued 05, 2012 A

[3] CHECK POINTS OF EVERY 50 HOURS

Checking Engine Start System

• Do not allow anyone near the tractor while testing.

• If the tractor does not pass the test, do not operate the
tractor.

Q Preparation before testing.

1. Place all control levers in the “NEUTRAL” position.

2. Set the parking brake and stop the engine.

Q Test : Switch for the main gear shift lever.

1. Sit on operator’s seat.

2. Shift the main gear shift lever (1) to the desired position.

3. Depress the clutch pedal fully.

4. Disengage the PTO clutch control lever (2).

5. Turn the key to “START” position.

6. The engine must not crank.

Q Test : Switch for the PTO clutch control lever.

1. Sit on operator’s seat.

2. Engage the PTO clutch control lever (2).

3. Depress the clutch pedal (3) fully.

4. Turn the key to “START” position.

5. The engine must not crank.

(1) Main Gear Shift Lever
(2) PTO Clutch Control Lever

Checking Wheel Mounting Nuts Tightening Torque

G GENERAL

(3) Clutch Pedal

W1041704

• Never operate tractor with a loose rim, wheel, or axle.

• Any time bolts and nuts are loosened, retighten to specified
torque.

• Check all bolts and nuts frequently and keep them tight.

1. Check the wheel mounting nuts regularly especially when new.
If there are loosened, tighten as follows.

Front rim and disc
mounting nut
Front wheel mounting nut

Tightening torque

(1) Front Wheel Mounting Nut
(2) Front Rim and Disc Mounting Nut

Rear rim and disc
mounting nut

Rear wheel mounting nut

(3) Rear Rim and Disc Mounting Nut
(4) Rear Wheel Mounting Nut

260 to 304 N·m

26.5 to 31.0 kgf·m
192 to 224 lbf·ft

260 to 304 N·m

26.5 to 31.0 kgf·m
192 to 224 lbf·ft

344 to 402 N·m

35.0 to 41.0 kgf·m
254 to 296 lbf·ft

W1042230

G-18

M108S, WSM

CAUTION

CAUTION

KiSC issued 05, 2012 A

[4] CHECK POINTS OF EVERY 100 HOURS

Checking Battery Condition

• Keep electrolyte away from eyes, hands and clothes. If you
are spattered with it, wash it away completely with water
immediately and get medical attention.

• Keep open sparks and flames away from the battery at all
times. Hydrogen gas mixed with oxygen becomes very
explosive.

• Wear eye protection and rubber gloves when working
around battery.

1. The factory installed battery is of non-refillable type. If the
indicator (2) turns white, do not charge the battery but replace it
with new one.

2. Clean the battery surface with a clean cloth.
Keep the terminals clean and coated with petroleum jelly.

Q How to read the indicator

Check the battery condition by reading the indicator.

Green

Black Needs charging battery.

White Needs changing battery.

G GENERAL

State of indicator display

Specific gravity of electrolyte and quality of electrolyte
are both in good condition.

(1) Battery (2) Indicator

W1042636

Directions for Storage

• When connecting the battery, do not reverse the polarities.
Connection with reverse polarities will cause spark and
troubles to the battery and electrical system in the tractor.

• When disconnecting the cable from the battery, start with
the negative terminal first.

• When connecting the cable to the battery, start with the
positive terminal first.

• Reversing the steps may cause shortcircuiting, should a
metallic tool touch the terminals.

• When storing the tractor for long periods of time, remove the
battery from the tractor and store in a cool, dry place.

W1042912

G-19

M108S, WSM

IMPORTANTQ

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Cleaning Air Cleaner Element

1. Remove the air cleaner cover (4) and primary element (2).

2. Clean the primary element if:

• When dry dust adheres to the element, blow compressed air from
the inside turning the element. Pressure of compressed air must
be under 205 kPa (2.1 kgf/cm

2

, 30 psi).

3. When replacing the air cleaner primary element (2), replace the
secondary element (1) as well :
Once a year or after every six times of cleaning, whichever
comes first.

• The air cleaner uses a dry element, never apply oil.

• Do not run the engine with filter element removed.

• Be sure to refit the dust cup with the arrow ↑ (on the rear of

cup) upright. If the dust cup is improperly fitted, evacuator
valve will not function and dust will adhere to the element.

• Do not touch the secondary element except in cases where
replacing is required.

Q Evacuator Valve

Open evacuator valve once a week under ordinary conditions or

daily when used in a dusty place to get rid of large particles of dust
and dirt.

(1) Secondary (Safety) Element
(2) Primary Element

(3) Evacuator Valve
(4) Cover

W1043169

Checking Fuel Line

1. Check to see that all lines and hose clamps are tight and not
damaged.

2. If hoses and clamps are found worn or damaged, replace or
repair them at once.

• If the fuel line is removed, be sure to properly bleed the fuel
system.
Refer to “[14] OTHERS” in this section.

(1) Fuel Line (2) Clamp Band

W1043622

G-20

M108S, WSM

CAUTION

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Adjusting Fan Belt Tension

• Be sure to stop the engine before checking belt tension.

1. Stop the engine and remove the key.

2. Apply moderate thumb pressure to belt between pulleys.

3. If tension is incorrect, loosen the alternator mounting bolts and,
using a lever placed between the alternator and the engine block,
pull the alternator out until the deflection of the belt falls within
acceptable limits.

4. Replace fan belt if it is damaged.

Belt tension Factory spec.

(1) Bolt A : Check the belt tension

B : To tighten

10 to 12 mm

0.40 to 0.47 in.

W1043886

Adjusting Brake Pedal

1) Brake Pedal Free Travel

• When checking, parking the tractor on flat ground, and stop
the engine.

1. Measure the free travel by depressing the brake pedals.

2. Slightly depress the brake pedals and measure free travel at the
top of pedal stroke.

3. If the measurement is not within the factory specifications, adjust
the free travel by the push rod (2).

4. After adjustment, tighten the lock nut firmly.

• Keep the free travel in the right and left brake pedals equal.

Brake pedal free travel Factory spec.

(1) Brake Pedal
(2) Push Rod

A : Free Travel

7.0 to 14 mm

0.28 to 0.55 in.

W1044283

G-21

M108S, WSM

CAUTION

KiSC issued 05, 2012 A

G GENERAL

2) Brake Pedal Stroke and Difference between Right and Left
Pedal Strokes

• When checking, park the tractor on flat ground, and stop the
engine.

1. Disengage the brake pedal lock.

2. Step on either side brake pedal and measure the level difference
(pedal stroke) between right and left pedals.

3. Do the same for the other side.

4. If the pedal stroke exceeds the factory specification, check the air
bleeding, master cylinder, equalizer or brake case.

Brake pedal stroke Factory spec.

Difference between left
and right brake pedal
stroke

Factory spec.

Less than 100 mm

3.94 in.

0 to 5 mm
0 to 0.20 in.

(1) Brake Pedal LH
(2) Brake Pedal RH
(3) Brake Pedal Lock

A : Pedal Stroke

W1044545

3) Equalizer Working Level

1. Gently step on both the right and left pedals at once with your
both feet. Step on the right pedal all the way (the left pedal rises).
Measure the level difference between the two pedals.

2. Next step on the left pedal all the way and measure the level
difference.

3. If the measurement is not within the factory specification, check
the equalizer (3).

Level difference
between two pedals

(1) Brake Pedal
(2) Master Cylinder

Factory spec.

(3) Equalizer

Less than 10 mm

0.39 in.

W1045198

G-22

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Adjusting Parking Brake Lever Free Play

1. Release the parking brake lever.

2. Pull the parking brake lever with a force of 30.0 kg (66.1 lbs) for
checking the free play and check the number of notches.

3. If the number of notches is not within the factory specifications,
loosen the lock nuts (1) and adjust the length of the parking brake
wire (2).

4. After adjustment, tighten the lock nuts firmly.

Parking brake lever
travel
(number of notches)

Factory spec. 2 notches

• After adjustment, check the parking brake performance
according to steps 1 to 5.

1. Set the parking brake lever to the 7th notch.

2. Start the engine and set at the idling speed.

3. Shift the travelling speed to the maximum speed range.

4. Release the clutch pedal slowly, and check that the engine
is stopped.

5. If the engine is not stopped, check the parking brake pad
and brake plate. (Refer to “[1] CHECKING AND
ADJUSTING” at “5. BRAKES” section.)

(1) Parking Brake Lever
(2) Parking Brake Wire
(3) Notches
(4) Lock Nut

A : Pull
B : Release

W1045376

G-23

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Lubricating Grease Fittings

1. Apply a small amount of multipurpose grease to following points:

2. If you operated the machine in extremely wet and muddy
condition, lubricate grease fittings more often.

(1) Grease Fitting (Front Axle Support)

(Front)

(2) Grease Fitting (Front Axle Support)

(Rear)

(3) Grease Fitting (Front Wheel Case

Support) (RH, LH)

(4) Grease Fitting (Top Link)
(5) Grease Fitting (Top Link Bracket)
(6) Grease Fitting (Lifting Rod)
(7) Grease Fitting (Steering Joint Shaft)
(8) Grease Fitting (Battery Terminal)

W1045953

G-24

M108S, WSM

KiSC issued 05, 2012 A

[5] CHECK POINTS OF EVERY 200 HOURS

Changing Hydraulic Oil Filter

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

Checking Radiator Hose and Hose Clamp

Check to see if radiator hoses are properly fixed every 200 hours

of operation or six months, whichever comes first.

1. If hose clamps are loose or water leaks, tighten bands securely.

2. Replace hoses and tighten hose clamps securely, if radiator
hoses are swollen, hardened or cracked. Replace hoses and
hose clamps every 2 years or earlier if checked and found that
hoses are swollen, hardened or cracked.

Q Precaution at Overheating

Take the following actions in the event the coolant temperature

be nearly or more than the boiling point, what is called
“Overheating”.

1. Stop the machine operation in a safe place and keep the engine
unloaded idling.

2. Don't stop the engine suddenly, but stop it after about 5 minutes
of unloaded idling.

3. Keep yourself well away from the machine for further 10 minutes
or while the steam blown out.

4. Checking that there gets no danger such as burn, get rid of the
causes of overheating according to the manual, see
“Troubleshooting” section, and then, start again the engine.

(1) Radiator Hose (2) Clamp

Checking Power Steering Oil Line

1. Check to see that all line and hose clamps are tight and not
damaged.

2. If hoses and clamps are found worn or damaged, replace or
repair them at once.

(1) Power Steering Hose

G GENERAL

W1046442

W1046500

W1046795

Checking Oil Cooler Line

1. Check to see that all lines and hose clamps are tight and not
damaged.

2. If hoses and clamps are found worn or damaged, replace or
repair them at once.

(1) Oil Cooler (2) Oil Cooler Line

W1037652

G-25

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Draining Fuel Tank Water

1. Remove the drain plug (2) at the bottom of the fuel tank (1) to left
sediments, impurities and water out of the tank.

2. Finally attach the drain plug (2) on the fuel tank (1).

(When reassembling)

• If the fuel contains poor qualities with much water in it, drain
the fuel tank at shorter intervals.

• Drain the fuel before operating the tractor after a long period
of storage.

(1) Fuel Tank (2) Drain Plug

W1046897

Adjusting Toe-in

1. Park tractor on a flat place.

2. Turn steering wheel so that front wheels are in the straight ahead
position.

3. Lower the implement, lock the park brake and stop the engine.

4. Measure distance between tire beads at front of tire, hub height.

5. Measure distance between tire beads at rear of tire, hub height.

6. Front distance should be shorter than rear distance.

7. If not, adjust tie-rod length.

Toe-in (b-a)

Factory
spec.

4WD

2.0 to 8.0 mm

0.079 to 0.31 in.

Q Toe-in Adjustment

1. Detach the snap ring (1).

2. Loosen the tie-rod joint lock nut (3).

3. Turn the tie-rod joint (2) to adjust the rod length until the proper
toe-in measurement is obtained.

4. Retighten the tie-rod joint lock nut (3).

5. Attach the snap ring (1) of the tie-rod joint.

167 to 196 N·m

Tightening torque Tie-rod joint lock nut

17.0 to 20.0 kgf·m
123 to 144 lbf·ft

(1) Snap Ring
(2) Tie-rod Joint
(3) Tie-rod Joint Lock Nut

(a) Wheel-to-wheel distance at front
(b) Wheel-to-wheel distance at rear
(c) Front

W1047149

Checking Intake Air Line

1. Check to see that hoses and hose clamps are tight and not
damaged.

2. If hoses and clamps are found worn or damaged, replace or
repair them at once.

(1) Hose (2) Hose Clamp

W1033756

G-26

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Cleaning Inner Air Filter

1. Remove the inner air filter, and blow air the direction opposite to
the filter’s normal air flow. Pressure of compressed air must be
under 210 kPa (2.1 kgf/cm

2

, 30 psi).

Q How to attach and detach the push-rivet assembly.

• Detaching procedure
To remove the push rivet of the indoor air filter, hold the rivet
around its head (3), apply a phillips screwdriver to the recess (A)
and turn the rivet counterclockwise.

• Attaching procedure
To fix the push rivet in the indoor air filter, put the rivet end in the
filter and push on the rivet head (3) all the way.

(1) Inner Filter
(2) Push-rivet
(3) Rivet Head

A : Recess
B : Push

W1047808

G-27

M108S, WSM

NOTEQ

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Cleaning Fresh Air Filter

1. Remove the knob bolts (3) and pull out filter (1).

• Do not hit the filter. If the filter becomes deformed, dust may
enter into the air-conditioner, which may cause damage and
malfunction.

• Do not use gasoline, thinner or similar chemicals to clean
the filter as damage to the filter may occur.

• It may also cause an unpleasant odor in the cabin when the
system is used next.

Q Cleaning the air filter

• Normal use
Blow air from the opposite direction to the filter’s normal air flow.
Pressure of compressed air must be under 210 kPa (2.1 kgf/cm
30 psi)

• If the filter is very dirty
Dip the filter in lukewarm water with mild dish washing detergent.
Move it up and down as well as left and right to loosen dirt. Rinse
the filter with clean water and let it air-dry.

• Do not hit the filter. If the filter becomes deformed, dust may
enter into the air-conditioner, which may cause damage and
malfunction.

• Do not use gasoline, thinner or similar chemicals to clean
the filter as damage to the filter may occur.

• If may also cause an unpleasant odor in the cabin when the
system is used next.

(1) Fresh Air Filter
(2) Cover
(3) Knob Bolt

A : Air Inner Port
B : Air Conditioner Airflow

W1048208

Cleaning Air Conditioner Condenser

1. Check the air conditioner condenser (1).

2. If dust and dirt, wash off all dirt and dust from the condenser (1)
with a soft brush, use care not to damage or bend the fins.

(1) Air Conditioner Condenser

W1048552

2

,

G-28

M108S, WSM

CAUTION

IMPORTANTQ

CAUTION

KiSC issued 05, 2012 A

G GENERAL

Sliding Air Conditioner Condenser

• The condenser and receiver become hot while the air
conditioner is running. Before checking or cleaning them,
wait long enough until they cool down.

1. Release the air conditioner hoses off the hook.

2. Loosen the wing nut.

3. Hold the handle, slide the air conditioner condenser assembly
toward yourself.

• Do not hold the air conditioner receive or the air conditioner
pipes when sliding out the condenser for cleaning.

(1) Condenser
(2) Receiver
(3) Handle
(4) Wing Nut

(5) Air Conditioner Hose
(6) Hook

A : PULL

W1048917

Adjusting Air Conditioner Belt Tension

• Be sure to stop the engine before checking air conditioner
belt tension.

1. Stop the engine and remove the key.

2. Apply 98 N (10 kgf, 22 lbf) pressure to the belt between the
pulleys.

3. If tension is incorrect, loosen the tension pulley mounting nut and
turn the adjusting bolt to adjust the belt tension within acceptable
limits.

4. If belt is damaged, replace it.

A deflection of between

Air conditioner belt
tension

Factory spec.

10 to 12 mm (0.40 to 0.47
in.) when the belt is
pressed in the middle of
the span

(1) Adjusting Bolt
(2) Tension Pulley Mounting Nut

[6] CHECK POINT OF EVERY 300 HOURS

Changing Engine Oil

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

G-29

A : Deflection

W1049284

W1049642

M108S, WSM

KiSC issued 05, 2012 A

[7] CHECK POINTS OF EVERY 400 HOURS

Cleaning Water Separator

1. Close the fuel cock (1).

2. Unscrew the retainer ring (2) and remove the cup (3), and rinse
the inside with kerosene.

3. Take out the element and dip it in the kerosene to rinse.

4. After cleaning, reassemble the water separator, keeping out dust
and dirt.

5. Bleed the fuel system. (Refer to “[14] OTHERS” in this section.)

(1) Fuel Cock
(2) Retainer Ring
(3) Cup
(4) O-ring
(5) Element

G GENERAL

(6) Spring
(7) Red Float

A : CLOSE

W1049718

Replacing Fuel Filter

1. Remove the fuel filter (1).

2. Put a film of clean fuel on rubber seal of new filter.

3. Tighten the filter until it contacts the mounting surface. Tighten
filter by hand an additional 1/2 turn only.

4. Bleed the fuel system. (Refer to “[14] OTHERS” in this section.)

(1) Fuel Filter

[8] CHECK POINTS OF EVERY 600 HOURS

Replacing Engine Oil Filter

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

Changing Transmission Fluid

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

Changing Front Differential Case Oil

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

Changing Front Axle Gear Case Oil

1. Refer to “[2] CHECK POINTS OF INITIAL 50 HOURS” in this
section.

W1050132

W1050294

W1050340

W1050385

W1050430

G-30

M108S, WSM

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Changing Brake Oil

• Be sure to check and service the tractor on a flat place with
engine shut off and applying the parking brake on.

• Be sure to use the recommended brake oil. (Refer to “4.
LUBRICANTS, FUEL AND COOLANT” in this section.)

• When refilling brake oil, use the same quality of oil as the
one already in the reservoir. Adding an oil of different make
or type can cause trouble, and thus must be avoided.

• While changing brake oil, make sure to keep enough brake
oil in the reservoir.

1. Remove the brake reservoir cap (1), and fill with oil up to the
MAX. level.

2. After installing the vinyl pipes (3) to the bleeder (2), loosen the
bleeder a half turn.

3. Move the brake pedal up and down. Repeat this motion until
fresh oil overflows.

(1) Brake Reservoir Cap
(2) Air Bleeder (on Brake Case)
(3) Vinyl Pipe

A : MAX Level
B : MIN Level

W1050507

Adjusting Front Axle Pivot

1. Jack up the tractor body, then loosen the lock nut (2).

2. Measure the adjusting screw tightening torque.

3. If tightening torque is not within the factory specifications, adjust
the adjusting screw (1).

4. After adjustment, tighten the lock nut firmly.

Front axle adjusting screw

Tightening torque

Lock nut

20 to 29 N·m

2.0 to 3.0 kgf·m
15 to 21 lbf·ft

98.1 to 147 N·m

10.0 to 15.0 kgf·m

72.4 to 108 lbf·ft

(1) Adjusting Screw (2) Lock Nut

G-31

W1050914

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Adjusting King-pin Pivot

1. Jack up the tractor, then loosen the lock nut (2).

2. Measure the adjusting screw tightening torque.

3. If tightening torque is not within the factory specifications, adjust
the adjusting screw (1).

4. After adjustment, tighten the lock nut (2) firmly.

5.0 to 9.8 N·m

Adjusting screw

Tightening torque

Lock nut

(1) Screw (2) Lock Nut

0.50 to 1.0 kgf·m

3.7 to 7.2 lbf·ft

98.1 to 147.0 N·m

10.0 to 15.0 kgf·m

72.4 to 108 lbf·ft

W1051354

[9] CHECK POINT OF EVERY 800 HOURS

Adjusting Engine Valve Clearance

1. Refer to “[1] [2] CHECKING AND ADJUSTING” at “1. ENGINE”
section.

[10] CHECK POINT EVERY 1500 HOURS

Checking Fuel Injection Nozzule (Active Test)

1. Refer to “Diagnosis Manual”.

[11] CHECK POINTS EVERY 3000 HOURS

Checking Turbo Charger

1. Refer to “[1] [2] CHECKING AND ADJUSTING” at “1. ENGINE”
section.

Checking Supply Pump

1. Refer to “Diagnosis Manual”.

Checking Intake Air Heater

1. Refer to “[4] CHECKING AND ADJUSTING” at “9.
ELECTRICAL SYSTEM” section.

W1052150

W1039924

W1034650

W1039985

W1034786

G-32

M108S, WSM

KiSC issued 05, 2012 A

[12] CHECK POINTS OF EVERY 1 YEAR

Replacing Air Cleaner Primary and Secondary Element

1. Refer to “[4] CHECK POINTS OF EVERY 100 HOURS” in this
section.

Checking Air Conditioner Pipes and Hoses

1. Check to see that all lines and hose clamps are tight and not
damaged.

2. If hoses and clamps are found worn or damaged, replace or
repair them at once.

(1) A/C Hose (2) Heater Hose

Checking Cabin Isolation Cushion

1. Check the cushions (1) for any breakage or fatigue.

2. Replace them if they have deteriorated.

(1) Cushion

G GENERAL

W1052222

W1051760

W1052027

G-33

M108S, WSM

CAUTION

IMPORTANTQ

NOTEQ

KiSC issued 05, 2012 A

[13] CHECK POINTS OF EVERY 2 YEARS

Flush Cooling System and Changing Coolant

• Do not remove the radiator cap when the engine is hot. Then
loosen cap slightly to the stop to relieve any excess
pressure before removing cap completely.

1. Stop the engine and let cool down.

2. To drain the coolant, open the radiator drain plug (1) and remove
radiator cap (2). The radiator cap (2) must be removed to
completely drain the coolant.

3. Fill with clean water and cooling system cleaner.

4. Follow directions of the cleaner instruction.

5. After flushing, fill with clean water and anti-freeze until the coolant
level is just below the port.

6. Fill with clean water and anti-freeze up to the upper line of
recovery tank (3).

7. Install the radiator cap (2) securely.

8. Start and operate the engine for few minutes.

9. Stop the engine. Check coolant level and add coolant if
necessary.

Coolant Capacity

G GENERAL

9.6 L

10.0 U.S.qts

8.4 Imp.qts

• Do not start engine without coolant.

• Use clean, fresh water and anti-freeze to fill the radiator.

• When the anti-freeze is mixed with water, the anti-freeze
mixing ratio must be less than 50 %.

• Securely tighten radiator cap (2). If the cap is loose or
improperly fitted, water may lead out and the engine could
overheat.

• On cabin type machines, fresh water circulates through the
heater. This means that one more liter or so of fresh water
is required.
In changing fresh water, pour fresh water up to the filter port
of the recovery tank. Turn ON the heater (shift the
temperature control lever toward WARM), and run the
engine for a while in order to warm fresh water. Then stop
the engine.
When fresh water has cooled down, some of the fresh water
in the recovery tank is sucked. Now the recovery tank is
appropriately filled with fresh water.

(1) Drain Plug
(2) Radiator Cap

(3) Recovery Tank

W1052302

G-34

M108S, WSM

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

Flush Cooling System and Changing Coolant (Continued)
Q Anti-Freeze

• When using antifreeze, put on some protection such as
rubber gloves (Antifreeze contains poison).

• If should drink antifreeze, throw up at once and take medical
attention.

• When antifreeze comes in contact with the skin or clothing,
wash it off immediately.

• Do not mix different types of Antifreeze.
The mixture can produce chemical reaction causing harmful
substances.

• Antifreeze is extremely flammable and explosive under
certain conditions. Keep fire and children away from
antifreeze.

• When draining fluids from the engine, place some container
underneath the engine body.

• Do not pour waste onto the grounds, down a drain, or into
any water source.

• Also, observe the relevant environmental protection
regulations when disposing of antifreeze.

If it freezes, coolant can damage the cylinders and radiator. If the

ambient temperature falls below 0 °C or before a long-term storage,
let out coolant completely, or mix fresh water with long-life coolant
and fill the radiator and reserve tank with the mixture.

1. Long-life coolant (hereafter LLC) comes in several types. Use
ethylene glycol (EG) type for this engine.

2. Before employing LLC-mixed coolant, fill the radiator with fresh
water and empty it again.
Repeat this procedure 2 or 3 times to clean up the inside.

3. Mixing the LLC
Put the LLC in coolant in the percentage (%) for a target
temperature. When mixing, stir it up well, and then fill into the
radiator.

4. The procedure for the mixing of water and antifreeze differs
according to the make of the antifreeze and the ambient
temperature. Refer to SAE J1034 standard, more specifically
also to SAE J814c.

• When the antifreeze is mixed with water, the antifreeze
mixing ratio must be less than 50 %.

Vol % Anti-freeze

40 −24 106

50 −37 108

Freeze Point Boiling Point*

°C °C

*At 1.013 x 1000000 Pa (760 mmHg) pressure (atmospheric).

A higher boiling point is obtained by using a radiator pressure cap
which permits the development of pressure within the cooling
system.

W1052897

G-35

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

5. Adding the LLC
(1) Add only water if the mixture reduces in amount by
evaporation.
(2) If there is a mixture leak, add the LLC of the same
manufacture and type in the same mixture percentage.
*Never add any long-life coolant of different manufacture.
(Different brands may have different additive components, and
the engine may fail to perform as specified.)

6. When the LLC is mixed, do not employ any radiator cleaning
agent. The LLC contains anticorrosive agent. If mixed with the
cleaning agent, sludge may build up, adversely affecting the
engine parts.

7. Kubota's genuine long-life coolant has a service life of 2 years.
Be sure to change the coolant every 2 years.

• The above data represents industry standards that
necessitate a minimum glycol content in the concentrated
anti-freeze.

• When the coolant level drops due to evaporation, add water
only to keep the antifreeze mixing ratio less than 50 %. In
case of leakage, add antifreeze and water in the specified
mixing ratio before filling in to the radiator.

W1053945

Replacing Radiator Hose (Water Pipes)

1. Replace the hoses and clamps.
Refer to “[5] CHECK POINTS OF EVERY 200 HOURS” in this
section.

W1054349

Replacing Intake Air Line

1. Replace the hoses and clamps.
Refer to “[5] CHECK POINTS OF EVERY 200 HOURS” in this
section.

W1034887

Replacing Fuel Hose

1. Replace the fuel hose and clamps, if necessary.
Refer to “[4] CHECK POINTS OF EVERY 100 HOURS” in this
section.

W1054573

Replacing Power Steering Hose

1. Replace the hoses and clamps, if necessary.
Refer to “[5] CHECK POINTS OF EVERY 200 HOURS” in this
section.

W1054527

G-36

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Replacing Brake Hose

1. Replace the brake hoses (1).

2. After replacing the hoses, bleed an air from brake system. (Refer
to “[14] OTHERS” in this section.)

(1) Brake Hose

W1054709

Replacing Parking Brake Cable

1. Replace the parking brake cable (3).
Refer to “[4] CHECK POINTS OF EVERY 100 HOURS” in this
section.

(1) Parking Brake Lever
(2) Lock Nut

(3) Parking Brake Cable
(4) Parking Brake Camshaft

W1054811

Replacing Master Cylinder Kit and Equalizer Kit

1. Refer to “5. BRAKES” section.

W1055146

Replacing Brake Seal 1 and 2

1. Refer to “5. BRAKES” section.

W1055100

Replacing Air Conditioner Hose

1. Refer to “[12] CHECK POINTS OF EVERY 1 YEAR” in this
section.

W1041425

G-37

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

[14] OTHERS

G GENERAL

Bleeding Fuel System

Air must be removed :

1. When the fuel filter or lines ar removed.

2. When water is drained from water separator.

3. When tank is completely empty.

4. After the tractor has not been used for a long period of time.

Q Bleeding procedure is as follows :

1. Fill the fuel tank with fuel, and open the fuel cock (1).

2. Disconnect the intake heater connector (2).

3. Turn ON and OFF the key switch (3) repeatedly 10 times or so at
the following intervals. This lets the air out of the fuel line.

- Key switch ON time : 30 seconds.

- Key switch OFF time : 15 seconds.

4. Set the hand throttle lever at the maximum speed position, turn
the key switch to start the engine and then reset the throttle lever

-1

at the mid speed (around 1500 min

(rpm)) position.

If engine does not start, try it several times at 30 second intervals.

5. Accelerate the engine to remove the small portion of air left in the
fuel system.

6. If air still remains and the engine stops repeat the above steps.

• Do not try air-bleeding with the heater in operation.
Otherwise the battery may get damaged.

• Do not hold key switch at engine start position for more than
10 seconds continuously. If more engine cranking is
needed, try again after 30 seconds.

(1) Fuel Cock
(2) Connector
(3) Key Switch

A : Close
B : Open
C : ON
D : OFF

W1043089

Draining Clutch Housing Water

1. The tractor is equipped with drain plug (1) under the clutch
housing.

2. After operating in rain, snow or tractor has been washed, water
may get into the clutch housing.

3. Remove the drain plug (1) and drain the water, then install the
plug (1) again.

(1) Drain Plug (Water)

W1055587

G-38

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Bleeding Brake System

• While bleeding, make sure to keep enough brake oil in the
brake oil reservoir.

1. Disconnect the brake pipes (1) from the master cylinder.

2. Move the brake pedal up and down by hand. At this time, when
raising the pedal, close the master cylinder outlet by a finger, and
when lowering, release the finger.
Repeat this operation several times. (Prepare and oil can.)

3. After bleeding the master cylinder, install the front brake pipes.

4. After installing the vinyl pipe (3) to the bleeder (2) and (4) loosen
the bleeder two turns.

5. Move the brake pedal up and down.
Repeat this motion until air bubble in brake oil disappears.
After bleeding, tighten the bleeders firmly.

16 to 24 N·m

Tightening torque Brake pipe nut

1.6 to 2.5 kgf·m
12 to 18 lbf·ft

(Reference : Importance of Bleeding)

• If the air mixes in the brake hydraulic circuit, poor or no braking
force is obtained due to compress the air even when the brake
pedal is pressed.
Accordingly whenever the hydraulic brake system is
disassembled, be sure to bleed after reassembling.

(1) Brake Pipe
(2) Bleeder (on Brake Case)

(3) Vinyl Pipe
(4) Bleeder (on Trailer Brake Valve)

W1055717

G-39

M108S, WSM

KiSC issued 05, 2012 A

Replacing Fuse

Fuse No. Capacity (Ampere) Protected circuit

(1) 5 A Meter backup

(2) 15 A Flasher (Hazard)

(3) 15 A Dome light, Brake lamp

(4) 15 A Head light

(5) 25 A Auxiliary power

(6) 15 A Tail / position lamp, Horn

(7) 10 A A/C compressor, F/S work light

(8) 25 A Air conditioner (Fan motor)

(9) 15 A Work light front

(10) 15 A Work light rear

(11) 5 A Engine, PTO, Alternator

(12) 5 A Meter panel, Buzzer

(13) 10 A Turn signal

(14) 10 A Transmission control

(15) 5 A A/C, Auxiliary power

(16) 15 A Wiper

(17) 10 A Beacon

(18) 5 A Audio (radio)

(19) 15 A Cigarette lighter

(20) 5 A Starter relay

(21) 30 A Main key

(22) 30 A Auxiliary power

(23) 120 A Charge

(24) 120 A Heater

(25) 60 A Head light, Flasher, Dome light

(26) 60 A Air conditioner (Fan motor)

(27) 10 A Common rail system (CRS) power

(28) 15 A Seat

A 25 A

B 15 A

C 10 A

D 5 A

Spare

G GENERAL

[A] Air Suspension Seat Type

(If Equipped)

W1034978

G-40

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Replacing Light Bulb

1. Head lights.
Take the bulb out of the light body and replcwith a new one.

2. Other lights
Detach the lens and replace the bulb.

Light Capacity

Head lights 60 / 55 W

Tail light 10 W

Turn signal / hazard light (front) 21 W

Turn signal / hazard light (rear) 21 W

Brake stop light 21 W

Front work light (Front side) 21 W

Dome light (Room lamp) 10 W

Sidemarker light 10 W

Number plate light 10 W

W1056015

Lubricating Points Cabin

1. Apply oil to door hinges (1) and rear window hinges (2).

(1) Door Hinge (2) Rear Window Hinge

W1056309

Adding Washer Liquid

1. Add a proper amount of automobile washer liquid when it is
necessary.

1.3 L

Washer liquid tank Capacity

(1) Washer Liquid Tank

1.4 U.S.qts

1.1 Imp.qts

W1056398

G-41

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Checking the Amount of Refrigerant (Gas)

1. A shortage of refrigerant impairs the air conditioner performance.
Check the following points. If it is indicated that the amount of
refrigerant is extremely low. Do to inspect and charge.

Q Checking procedure

1. Run the air-conditioner in the following conditions.

• Engine speed : About 1500 min

-1

(rpm)

• Temperature control dial: Maximum cooling position (leftmost)

• Blower switch : Highest blow (HI)

• Air-conditioner switch : ON

2. Look into the sight glass to see if the refrigerant is flowing through
its circuit.

(Reference)
(A) Proper

: Little or no air bubbles in the refrigerant flow.

(B) Low

: Lots of air bubbles in the refrigerant flow (air bubbles or foam

passing continuously).

(C) Overfull or no refrigerant

: Colorless and transparent

(1) Sight Glass (A) Proper

(B) Low
(C) Overfull or no refrigerant

W1057923

G-42

M108S, WSM

KiSC issued 05, 2012 A

8. SPECIAL TOOLS

[1] SPECIAL TOOLS FOR ENGINE

Diesel Engine Compression Tester

Code No.: 07909-30208 (Assembly) 07909-31251 (G)

Application: Use to measure diesel engine compression and

(1) Gauge
(2) L Joint
(3) Adaptor A
(4) Adaptor B
(5) Adaptor C
(6) Adaptor E

Oil Pressure Tester

Code No.: 07916-32032
Application: Use to measure lubricating oil pressure.

(1) Gauge
(2) Cable
(3) Threaded Joint
(4) Adaptor 1

G GENERAL

07909-30934 (A to F) 07909-31271 (I)
07909-31211 (E and F) 07909-31281 (J)
07909-31231 (H)

diagnostics of need for major overhaul.

(7) Adaptor F
(8) Adaptor G

(9) Adaptor H
(10) Adaptor I
(11) Adaptor J

W10242000

(5) Adaptor 2
(6) Adaptor 3
(7) Adaptor 4
(8) Adaptor 5

W10243180

Diagnosis Tool Kit

Code No.: 1J574-90010
Application: Use to check on the trouble of the common rail diesel

engine.

(1) Interface (PYTHON)
(2) Cable (USB)

(3) Cable (VEH)
(4) Diagnosis Software CD-ROM

W10464690

G-43

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

• The following special tools are not provided, so make them referring to the figure.
Idle Gear Bushing Replacing Tool

Application: Use to press out and to press fit the bushing.

1. For idle gear bushing

A 196 mm (7.72 in.)

B 37.5 mm (1.48 in.)

C 150 mm (5.91 in.)

D 44.95 mm dia. (1.770 in. dia.)

E 48.075 to 48.100 mm dia. (1.8928 to 1.8937 in. dia.)

F 20 mm dia. (0.79 in. dia.)

a6.3 μm (250 μin.)

b6.3 μm (250 μin.)

C1 Chamfer 1.0 mm (0.039 in.)

C2 Chamfer 2.0 mm (0.079 in.)

Gear Case Oil Seal Replacing Tool

Application: Use to press fit the oil seal.

A 148.8 mm (5.858 in.)

B 50 mm (2.0 in.)

C 18.8 mm (0.740 in.)

D 13.7 to 13.9 mm (0.540 to 0.547 in.)

E 11 mm (0.43 in.)

F 18 mm dia. (0.71 in. dia.)

G 38 mm dia. (1.5 in. dia.)

H 45 mm dia. (1.8 in. dia.)

I 57.90 to 58.10 mm dia. (2.280 to 2.287 in. dia.)

J 79.5 mm dia. (3.13 in. dia.)

K 87 mm dia. (3.4 in. dia.)

L 12 mm (0.47 in.)

M 40 mm (1.6 in.)

N 120 mm (4.72 in.)

G GENERAL

W10440400

W1041529

G-44

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Valve Guide Replacing Tool

Application: Use to press out and press fit the valve guide.

A 225 mm (8.86 in.)

B 70 mm (2.8 in.)

C 45 mm (1.8 in.)

D 20 mm dia. (0.79 in dia.)

E 11.7 to 11.9 mm dia. (0.461 to 0.468 in. dia.)

F 6.50 to 6.60 mm dia. (0.256 to 0.259 in. dia.)

G 25 mm dia. (0.98 in. dia.)

H 6.70 to 7.00 mm dia. (0.264 to 0.275 in. dia.)

I 5.0 mm (0.20 in.)

J 20 mm dia. (0.79 in.dia.)

K 12.5 to 12.8 mm dia. (0.493 to 0.503 in. dia.)

L 8.90 to 9.10 mm (0.351 to 0.358 in.)

C1 Chamfer 1.0 mm (0.039 in.)

C2 Chamfer 2.0 mm (0.079 in.)

C0.3 Chamfer 0.3 mm (0.01 in.)

W1038887

Auxiliary Socket for Fixing Crankshaft Sleeve

Application: Use to fix the crankshaft sleeve of the diesel engine.

A Rmax = 12.5 S

B 94.5 to 95.0 mm dia. (3.72 to 3.74 in. dia.)

C 40 mm dia. (1.6 in. dia.)

D 30 mm dia. (1.2 in. dia.)

E 12 mm (0.47 in.)

F 7.90 to 8.10 mm (0.311 to 0.318 in.)

G 20 mm (0.79 in.)

H 130 mm dia. (5.12 in. dia.)

I 99.40 to 99.60 mm dia. (3.914 to 3.921 in. dia.)

J 95.05 to 95.20 mm dia. (3.743 to 3.748 in. dia.)

K 3.0 mm dia. (0.12 in.dia.)

L 15 mm (0.59 in.)

M 10 mm (0.39 in.)

N 90 mm (3.5 in.)

O 115 mm (4.53 in.)

P 16.9 to 17.1 mm (0.666 to 0.673 in.)

C1 Chamfer 1.0 mm (0.039 in.)

C3 Chamfer 3.0 mm (0.12 in.)

C5 Chamfer 5.0 mm (0.20 in.)

C0.2 Chamfer 0.2 mm (0.008 in.)

C0.3 Chamfer 0.3 mm (0.01 in.)

W1041815

G-45

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Balancer Bushing Replacing Tool 1 Assembly

Application: Use to press fit the bushing.

No. Name of Part Q’ty. Remarks

(1) Shaft 1

(2) Piece 1 1

(3) Piece 2 1

(4) Bolt 2 M6 × P1.0

W1042867

Balancer Bushing Replacing Tool 1 Components Parts

1) Shaft

A 498 mm (19.6 in.)

B 318.80 to 319.20 mm (12.552 to 12.566 in.)

C 102.8 to 103.2 mm (4.048 to 4.062 in.)

D 60 mm (2.4 in.)

E 8.0 mm (0.31 in.)

F 5.0 mm (0.20 in.)

G 30 mm dia. (1.2 in. dia.)

H 65 mm dia. (2.6 in. dia.)

I 6.0 mm (0.24 in.)

J Chamfer 1.0 mm (0.039 in.)

K 53 mm dia. (2.1 in. dia.)

L 54.70 to 54.90 mm dia. (2.154 to 2.161 in. dia.)

M 0.26 rad (15 °)

N Chamfer 0.5 mm (0.02 in.)

O 41 mm dia. (1.6 in. dia.)

P 32 mm dia. (1.3 in. dia.)

Q 33.96 to 34.00 mm dia. (1.337 to 1.338 in. dia.)

R 18 mm dia. (0.71 in. dia.)

S 19.967 to 20.000 mm dia. (0.78611 to 0.78740 in. dia.)

U 3.0 mm (0.12 in.)

V 149.1 to 149.4 mm (5.870 to 5.881 in.)

W 365.10 to 365.40 mm (14.374 to 14.385 in.)

X 123 mm (4.84 in.)

Y 375 mm (14.8 in. )

Z M6 × P1.0 depth 7.0 mm (0.28 in.)

a Chamfer 2.0 mm (0.079 in.)

W1043162

G-46

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

2) Piece 1

A Chamfer 0.1 mm (0.004 in.)

B 1.0 mm (0.039 in.)

C Chamfer 1.0 mm (0.039 in.)

D 53.80 to 53.90 mm dia. (2.119 to 2.122 in. dia.)

E 20.020 to 20.041 mm dia. (0.78819 to 0.78901 in. dia.)

F 48 mm dia. (1.9 in. dia.)

G 49.934 to 49.940 mm dia. (1.9659 to 1.9661 in. dia.)

H 8.0 mm (0.31 in.)

I 2.0 mm (0.079 in.)

J 35 mm dia. (1.4 in. dia.)

K 5.0 mm (0.20 in.)

L 0.26 rad (15 °)

W1044434

3) Piece 2

A Chamfer 0.1 mm (0.004 in.)

B 1.0 mm (0.039 in.)

C Chamfer 1.0 mm (0.039 in.)

D 54.30 to 54.40 mm dia. (2.138 to 2.141 in. dia.)

E 34.025 to 34.050 mm dia. (1.3396 to 1.3405 in. dia.)

F 48.5 mm dia. (1.91 in. dia.)

G 50.421 to 50.440 mm dia. (1.9851 to 1.9858 in. dia.)

H 8.0 mm (0.31 in.)

I 2.0 mm (0.079 in.)

J 35 mm dia. (1.4 in. dia.)

K 5.0 mm (0.20 in.)

L 0.26 rad (15 °)

W1044620

Balancer Bushing Replacing Tool 2

Application: Use to press fit the bushing.

A 35 mm (1.4 in.)

B 33 mm (1.3 in.)

C Chamfer 0.5 mm (0.02 in.)

D 1.0 mm (0.039 in.)

E Chamfer 1.0 mm (0.039 in.)

F 40 mm dia. (1.6 in. dia.)

G 50.921 to 50.940 mm dia. (2.0048 to 2.0055 in. dia.)

H 54.80 to 54.90 mm dia. (2.158 to 2.161 in. dia.)

I 30 mm dia. (1.2 in. dia.)

J 49 mm dia. (1.9 in. dia.)

K 6.0 mm (0.24 in.)

L 125 mm (4.92 in.)

M 160 mm (6.30 in.)

N 3.0 mm (0.12 in.)

O 5.0 mm (0.20 in.)

P 0.26 rad (15 °)

W1044794

G-47

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Balancer Replacing Tools 3, 4, 5

Application: Use to press fit the bushing.

• This special tool is not provided, so make it referring to the
figure.

No. Name of Part Q’ty.

(1) Bracket 1

(2) Flange Nut 1

(3) Washer 1

(4) Shaft 1

(5) Piece 1 1

(6) Clevis 1

(7) Washer 1

(8) Cotter Pin 1

(9) Joint 1 1

(10) Piece 2 1

(11) Joint 2 1

(12) Piece 3 1

[a] :Tool 3
[b] :Tool 4

[c] :Tool 5
A : Section

Balancer Replacing Tool Components Parts

1) Bracket

A 12 mm (0.47 in.)

B 50 mm (2.0 in.)

C Chamfer 1.0 mm (0.039 in.)

D 80 mm (3.1 in.)

E 104 mm (4.09 in.)

F 22 mm (0.87 in.)

G 13 mm dia. (0.51 in. dia.)

W1045310

W1167794

G-48

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

2) Shaft

A 44 mm dia. (1.7 in. dia.)

B 12 mm (0.47 in.)

C Chamfer 1.0 mm (0.039 in.)

D 3.0 mm (0.12 in.)

E 3.0 mm (0.12 in.)

F 30 mm (1.2 in.)

G 38 mm (1.5 in.)

H 35 mm (1.4 in.)

I M12 × P1.25

J 53 mm (2.1 in.)

K 4.0 mm (0.16 in.)

L 75 mm (3.0 in.)

M 57 mm (2.2 in.)

N 70 mm (2.8 in.)

O 19.5 mm (0.768 in.)

P 12 mm (0.47 in.)

Q 0.8 mm (0.03 in.)

R 6.0 mm (0.24 in.)

W1046146

3) Piece 1

A 26 mm (1.0 in.)

B 18 mm (0.71 in.)

C 16.5 to 17.0 mm (0.650 to 0.669 in.)

D 1.5 mm (0.059 in.)

E 54.00 to 54.20 mm dia. (2.126 to 2.133 in. dia.)

F 50.55 to 50.75 mm dia. (1.991 to 1.998 in. dia.)

G 16 mm (0.63 in.)

H Chamfer 1.0 mm (0.039 in.)

I 8.5 mm dia. (0.33 in. dia.)

J 0.4 mm (0.02 in.)

K 3.0 mm (0.12 in.)

L 19 mm (0.75 in.)

M Chamfer 0.5 mm (0.02 in.)

N 36 mm (1.4 in.)

O 45 mm dia. (1.8 in. dia.)

P 0.78 rad (45 °)

Q 11.5 mm (0.453 in.)

W1047263

G-49

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

4) Joint 1

A M12 × P1.25

B Chamfer 1.0 mm (0.039 in.)

C 30 mm dia. (1.2 in. dia.)

D 13 mm dia. (0.51 in. dia.)

E Chamfer 3.0 mm (0.12 in.)

F 3.0 mm (0.12 in.)

G 45 mm (1.8 in.)

H 75 mm (3.0 in.)

I 57 mm (2.2 in.)

J 85 mm (3.3 in.)

K 70 mm (2.8 in.)

L 178 mm (7.01 in.)

W1047709

5) Piece 2

A 26 mm (1.0 in.)

B 18 mm (0.71 in.)

C 16.5 to 17.0 mm (0.650 to 0.669 in.)

D 1.5 mm (0.059 in.)

E 53.50 to 53.70 mm dia. (2.107 to 2.114 in dia.)

F 50.05 to 50.25 mm dia. (1.971 to 1.978 in dia.)

G 16 mm (0.63 in.)

H Chamfer 1.0 mm (0.039 in.)

I 8.5 mm dia. (0.33 in. dia.)

J 0.4 mm (0.02 in.)

K 3.0 mm (0.12 in.)

L 19 mm (0.75 in.)

M Chamfer 0.5 mm (0.02 in.)

N 36 mm (1.4 in.)

O 45 mm dia. (1.8 in. dia.)

P 0.78 rad (45 °)

Q 11.5 mm (0.453 in.)

W1048068

6) Joint 2

A M12 × P1.25

B Chamfer 1.0 mm (0.039 in.)

C 30 mm dia. (1.2 in. dia.)

D 13 mm dia. (0.51 in. dia.)

E Chamfer 3.0 mm (0.12 in.)

F 3.0 mm (0.12 in.)

G 45 mm (1.8 in.)

H 75 mm (3.0 in.)

I 57 mm (2.2 in.)

J 85 mm (3.3 in.)

K 70 mm (2.8 in.)

L 394 mm (15.5 in.)

W1048305

G-50

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

7) Piece 3

A 26 mm (1.0 in.)

B 18 mm (0.71 in.)

C 16.5 to 17.0 mm (0.650 to 0.669 in.)

D 1.5 mm (0.059 in.)

E 53.00 to 53.20 mm dia. (2.087 to 2.094 in dia.)

F 49.55 to 49.75 mm dia. (1.951 to 1.958 in dia.)

G 16 mm (0.63 in.)

H Chamfer 1.0 mm (0.039 in.)

I 8.5 mm dia. (0.33 in. dia.)

J 0.4 mm (0.02 in.)

K 3.0 mm (0.12 in.)

L 19 mm (0.75 in.)

M Chamfer 0.5 mm (0.02 in.)

N 36 mm (1.4 in.)

O 45 mm dia. (1.8 in. dia.)

P 0.78 rad (45 °)

Q 11.5 mm (0.453 in.)

W1048484

Injection Pump Gear Puller

Application: Use for remove the injection pump gear from governor

shaft.

A 10 mm dia. (0.39 in.dia.)

B M16 × Pitch 1.5

C 19 mm (0.75 in.)

D 0.5 mm radius (0.02 in. radius)

E 0.87 rad (50 °)

F 10 mm (0.39 in.)

G 20 mm (0.79 in.)

H 5.0 mm (0.20 in.)

I 95 mm (3.7 in.)

J 125 mm (4.92 in.)

K 5.0 mm (0.20 in.)

L M16 × Pitch 1.5

M 30 mm (1.2 in.)

N 9.5 mm (0.37 in.)

O 11 mm (0.43 in.)

P 9.5 mm (0.37 in.)

Q 14.5 mm (0.571 in.)

R 5.5 mm radius (0.22 in. radius)

S 20 mm (0.79 in.)

T 20 mm (0.79 in.)

U 80 mm (3.1 in.)

W 12 mm (0.47 in.)

C2 Chamfer 2.0 mm (0.079 in.)

W1042094

G-51

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Engine Stand

Application: Use to support engine.

A 480 mm (18.9 in.)

B 50 mm (2.0 in.)

C 108.5 mm (4.272 in.)

D 262.5 mm (10.33 in.)

E 12.5 mm (0.492 in.)

F 237.5 mm (9.350 in.)

G 142.5 mm (5.610 in.)

H 95 mm (3.7 in.)

I 14 mm dia. (0.55 in. dia.)

J 40 mm radius (1.6 in. radius)

K 210 mm (8.27 in.)

L 190 mm (7.48 in.)

M 100 mm (3.94 in.)

N 6.0 mm (0.24 in.)

O 6.0 mm (0.24 in.)

P 25 mm dia. (0.98 in. dia.)

C10 Chamfer 10 mm (0.39 in.)

W1033645

G-52

M108S, WSM

KiSC issued 05, 2012 A

Injector Adaptor for Measuring Cylinder Compression Pressure

Application : Use for measuring diesel engine compression pressure.

G GENERAL

A 16.14 to 16.20 mm dia. (0.6355 to 0.6377 in. dia.) W 65 mm (2.6 in.)

B 29.80 to 30.00 mm dia. (1.174 to 1.181 in. dia.) X 102.5 mm (4.035 in.)

C 41 mm (1.6 in.) Y 112 mm (4.41 in.)

D 11 mm (0.43 in.) Z 112.6 mm (4.433 in.)

E 0.271 rad (15.5 °) a 20.3 to 20.5 mm (0.800 to 0.807 in.)

F 20.5 to 21.0 mm (0.807 to 0.826 in.) b 120.7 to 121.3 mm (4.752 to 4.775 in.)

G 5.0 mm (0.20 in.) c 5.0 mm (0.20 in.)

H 2.09 rad (120 °) d 146 mm (5.75 in.)

I 3.0 mm (0.12 in.) e 28.5 mm (1.12 in.)

J 13.000 to 13.011 mm (0.51182 to 0.51224 in.) f 11 mm (0.43 in.)

K 44 mm (1.7 in.) g 12.9835 to 13.0055 mm (0.511162 to 0.512027 in.)

L 112.6 mm (4.433 in.) h 5/8-18UNF-2B

M 19.84 to 19.95 mm (0.7811 to 0.7854 in.) i 3.0 mm dia. (0.12 in. dia.) through hole

N 16.14 to 16.20 mm (0.6355 to 0.6377 in.) j 0.271 rad (15.5 °)

O 19.06 to 19.20 mm (0.7504 to 0.7559 in.) k

P 16.89 to 17.00 mm (0.6650 to 0.6692 in.) l 11 mm (0.43 in.)

Q 7.10 to 7.20 mm (0.280 to 0.283 in.) m 0.8 mm radius (0.03 in. radius)

R 16 mm dia. (0.63 in. dia.) n 0.4 mm radius (0.02 in. radius)

S 18 mm (0.71 in.) o Ra = 1.6a

T 48.6 mm (1.91 in.) p Ra = 3.2a

U 7.10 to 7.20 mm (0.280 to 0.283 in.) C0.5 Chamfer 0.5 mm (Chamfer 0.02 in.)

V 53.6 mm (2.11 in.) C1 Chamfer 1.0 mm (Chamfer 0.039 in.)

3.0 mm dia., 134.5 to 135.5 mm depth
(0.12 in. dia., 5.296 to 5.334 in. depth)

(1) Material S43C-D (2) Material SS400 (3) O-ring

G-53

M108S, WSM

KiSC issued 05, 2012 A

[2] SPECIAL TOOLS FOR TRACTOR

Tie-rod End Lifter

Code No. : 07909-39051
Application : Use for removing the tie-rod end with ease.

Steering Wheel Puller

Code No. : 07916-51090
Application : Use for removing the steering wheel without damaging

G GENERAL

W10264720

the steering shaft.

W10265330

Relief Valve Pressure Tester

Code No. : 07916-50045
Application : This allows easy measurement of relief set pressure.

(1) Gauge (07916-50322)
(2) Cable (07916-50331)
(3) Threaded Joint (07916-50401)
(4) Threaded Joint (07916-50341)
(5) Adaptor B (M18 × P1.5)

(07916-50361)

(6) Adaptor C (PS3/8)

(07916-50371)
(7) Adaptor D (PT1/8) (07916-50381)
(8) Adaptor E (PS3/8) (07916-50392)
(9) Adaptor F (PF1/2) (07916-62601)

(10) Adaptor 58 (PT1/4)

(07916-52391)

W10267410

Flow Meter

Code No. : 07916-52791 (Flow Meter)

07916-52651 (Hydraulic Test Hose)

Application : This allows easy testing of hydraulic system.

(1) Flow Meter (2) Hydraulic Test Hose

W10313180

Adaptor Set for Flow Meter

Code No. : 07916-54031
Application : Use for testing the hydraulic system.

(1) Adaptor 52
(2) Adaptor 53
(3) Adaptor 54
(4) Adaptor 61
(5) Adaptor 62
(6) Adaptor 63
(7) Adaptor 64

(8) Adaptor 65
(9) Adaptor 66

(10) Adaptor 67
(11) Adaptor 68
(12) Adaptor 69
(13) Hydraulic Adaptor 1

W10313960

G-54

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Toe-in Gauge

Code No. : 07909-31681
Application : This allows easy measurement of toe-in for all machine

models.

W10266890

Injector CH3

Code No. : 07916-52501
Application : Use for injecting calcium chloride solution into, and

removing it from, rear tires.

W10265850

Brake Air Bleeder

Code No. : 07916-54001
Application : This allows easy air bleed of the hydraulic brake

system.

W10516480

Relief Valve Setting Pressure Adaptor G

Code No. : 07916-52751
Application : This offers easy measurement of relief valve setting

pressure from the hydraulic coupler. This is available
with the relief valve setting pressure tester.

W10623960

G-55

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Shuttle Clutch Compression Tool

Code No. : 07916-55031
Application : Use exclusively for pushing the thrust collar, remove

the external snap ring.

• Replace the center guide (1) for shown in figure.

A 20.0 mm dia. (0.787 in. dia.)

B 11.5 mm dia. (0.453 in. dia.)

C Chamfer 1.0 mm (0.039 in.)

D 6.0 mm (0.24 in.)

E 15.0 mm (0.591 in.)

F 20.0 mm (0.787 in.)

G Weld all around

H 6.0 mm (0.24 in.)

I M4 × 0.7

J 28 mm (1.1 in.)

K 8.0 mm (0.31 in.)

L 5 mm (0.2 in.)

M 64.0 mm dia. (2.52 in. dia.)

N 70.5 mm dia. (2.78 in. dia.)

O 73.0 mm dia. (2.87 in. dia.)

P 80.0 mm dia. (3.15 in. dia.)

Q 25.0 mm (0.984 in.)

R 35.0 mm (1.38 in.)

S 20.0 mm (0.787 in.)

T M8 × 1.25

(1) Center Guide

W1020107

Pressure Gauge 50

Code No. : 07916-52961
Application : This pressure gauge is used to measure the low oil

pressure.

W10518650

Pinion Locking Tool

Code No. : 07916-52311
Application : Use for preventing the shaft from turning when

removing the staking nut from the counter shaft and
spiral bevel pinion shaft.

W10445520

G-56

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Clutch Tool B

Code No.: 07916-53041
Application: Use for mounting the clutch to the flywheel.

(1) Gauge Ring (No. 07916-53041)
(2) Center Bar (No. 07916-53041)

(3) Centering Guide (No. 07916-53041)

W10520300

Rear Axle Cover Puller

Code No. : 07916-51041
Application : Use for removing a rear axle cover from rear axle.

W1073259

Rear Axle Nut Wrench 98

Code No. : 07916-52521
Application : Use for removing and installing a rear axle nut.

Power Steering Adaptor

Code No. : 07916-54021
Application : Use for measuring the relief valve setting pressure for

power steering.

W10442870

Adaptor 56 (For Hydraulic Brake)

Code No. : 07916-52970
Application : Use for testing the hydraulic brake oil leakage.

W10523600

G-57

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

• Special tools for R134a refrigerant air conditioning system introduced below are available from DENSO
CO. LTD.

Air Conditioner Service Tool

Code No.: DENSO.CO. 95048-00061
Application: Use for charging, testing or discharging the air

conditioning system.

W1013507

(1) Manifold Gauge

Assembly

(2) Charging Hose

(Red : HI)

(3) Charging Hose

(Blue : LO)
(4) Charging Hose (Green)
(5) Can Tap Valve
(6) T Joint
(7) Quick Coupler (HI)
(8) Quick Coupler (LO)
(9) Service Valve Packing

(10) Charging Hose Packing
(11) Tool Case

95048-10090

95948-10270

95948-10280
95948-10260
95048-10150
95048-10160
95048-10130
95048-10140
95906-10310
95906-10300
95949-10610

W1014733

Electric Gas Leak Tester

Code No.: DENSO.CO. 95146-00060
Application: Use for gas leak testing the air conditioning system.

W1013817

Vacuum Pump

Code No.: DENSO.CO. 95046-00040 (AC220V)

95046-00050 (AC240V)

Application: Use for evacuating the air conditioning system.

(1) Adaptor (For 134a) (2) Vacuum Pump

W1013764

G-58

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

• The following special tools are not provided, make them referring to the figure.

Stopper Magnet Clutch (for A/C Compressor)

G GENERAL

Application: Use to loosen and tighten the magnet clutch mounting nut. (Use radius M)

A 125 mm (4.92 in.) H 2.09 rad (120 °)

B 40.0 mm dia. (1.57 in. dia.) I Radius 27.0 mm (Radius 1.06 in.)

C Radius 33.0 mm (Radius 1.30 in.) J Radius 50.0 mm (Radius 1.97 in.)

D 16 mm (0.63 in.) K Weld all around

E 120 mm dia. (4.72 in. dia.) L 20.0 mm (0.787 in.)

F 12.0 mm dia. (0.472 in. dia.) M Radius 41.0 mm (Radius 1.61 in.)

G 3 × M8 × 1.25 All screws

Stopper Bolt (for A/C Compressor)

Application : Use with the stopper magnet clutch.

A 12.0 mm (0.472 in.) E 5.5 mm dia. (0.22 in. dia.)

B 35.0 mm (1.38 in.) F 6.5 mm dia. (0.26 in. dia.)

C 7.0 mm (0.28 in.) G 0.52 rad (30 °)

D 0.40 mm (0.016 in.) H M8 × P1.25

G-59

W1065437

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

• The following special tools are not provided, so make them referring to the figure.
Draft Control Test Bar

Application: Use for checking the lift range and floating range of

hydraulic draft control.

A 1045 mm (41.14 in.)

B 1000 mm (29.37 in.)

C 20.0 mm dia. (0.787 in. dia.)

D 30.0 mm dia. (1.18 in. dia.)

E 90.0 mm (3.54 in.)

F 36.5 mm (1.44 in.) (Top link mounting hole)

G 30.0 mm (1.18 in.)

H 15.0 mm (0.591 in.)

I 26.0 mm dia. (1.02 in. dia.)

J Weld all around

K Weld all around

L 20.0 mm (0.787 in.)

Hydraulic Arm Shaft Bushing Press-Fitting Tool

Application : Use for replacing the hydraulic arm shaft bushings in

the hydraulic cylinder body.

Right Left

64.75 to 64.95 mm

A

(2.550 to 2.557 in.)

17.5 to 18.5 mm

B

(0.689 to 0.728 in.)

C 60.0 mm (2.36 in.)

D 32.0 mm (1.26 in.) 40.0 mm (1.57 in.)

59.970 to 59.999 mm

E

(2.3611 to 2.3621 in.)

F 70.0 mm dia. (2.76 in. dia.)

G 40.0 mm dia. (1.57 in. dia.)

H 50.0 mm (1.97 in.)

I 10.0 mm (0.397 in.)

a 6.3 μm (250 μin.)

b 6.3 μm (250 μin.)

c 6.3 μm (250 μin.)

d 6.3 μm (250 μin.)

G GENERAL

W10625190

69.75 to 69.95 mm
(2.746 to 2.753 in.)

13.5 to 14.5 mm
(0.532 to 0.570 in.)

64.970 to 64.990 mm
(2.5579 to 2.5586 in.)

W10316550

G-60

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Valve Adaptor

Application : Use for measuring the system pressure of shuttle

valve.

A 24.0 mm (0.945 in.)

B 27.7 mm (1.09 in.)

C G1/4

D 11.0 mm (0.433 in.)

E 15.0 mm (0.591 in.)

F 40.0 mm (1.57 in.)

G 60.0 mm (2.36 in.)

H 15.0 mm (0.591 in.)

I R1/8

J 4.0 mm dia. (0.16 in. dia.)

C1 Chamfer 1.0 mm (0.039 in.)

C2 Chamfer 2.0 mm (0.079 in.)

W1055758

G-61

M108S, WSM

KiSC issued 05, 2012 A

Cylinder Safety Valve Setting Pressure Adaptor

G GENERAL

Application : Use for setting the safety valve to the nozzle tester to measure cracking pressure and check oil tightness

of the safety valves.

A 45.0 mm (1.77 in.) N 10.0 mm dia. (0.397 in. dia.)

B 40.0 mm (1.57 in.) O 7.5 mm dia. (0.30 in. dia.)

C 35.0 mm (13.8 in.) P 1.0 rad (60 °)

D 23.0 to 23.3 mm (0.906 to 0.917 in.) Q 3.0 mm dia. (0.12 in. dia.)

E 16 mm (0.63 in.) R 36.0 mm (1.42 in.)

F 40.0 mm dia. (1.58 in. dia.) S 60.0 mm (2.36 in.)

G 32.40 to 32.70 mm dia. (1.276 to 1.287 in. dia.) T 5.0 mm (0.20 in.)

H 21.0 mm dia. (0.827 in. dia.) U 10 mm (0.39 in.)

I 20.00 to 20.05 mm dia. (0.7874 to 0.7893 in. dia.) V M30 × 1.5

J 2.50 to 2.59 mm (0.0985 to 0.101 in.) W 0.52 rad (30 °)

K 0.79 rad (45 °) X 8.0 mm dia. (0.31 in. dia.)

L 0.26 rad (15 °) Y 19.0 mm (0.748 in.)

M M12 × P1.5 Z 10.0 mm (0.397 in.)

G-62

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

Hydraulic Cylinder Block Tool

G GENERAL

Application : Use for separating a hydraulic cylinder block.

• The sealing surface of the connecting parts must be welded.

A 75.0 mm (2.95 in.) N 12 mm dia. (0.47 in. dia.)

B 24.0 mm (0.945 in.) O Radius 31.0 mm (1.22 in. radius)

C 60.0 mm (2.36 in.) P t3.2 mm (t0.13 in.)

D 6.0 mm (0.24 in.) Q 4.0 mm (0.16 in.)

E 45.0 mm (1.77 in.) R 72.8 mm (2.87 in.)

F 140 mm (5.51 in.) S 130 mm (5.12 in.)

G 74.0 mm (2.91 in.) T 50.0 mm (1.97 in.)

H 12.0 mm (0.472 in.) U 62.0 mm (2.44 in.)

I 20.0 mm (0.787 in.)

J 1580 mm (62.20 in.) a 26.0 mm dia. (1.02 in. dia.)

K 177 mm (6.97 in.) b

L 65.0 mm (2.56 in.) c

M 70.0 mm (2.76 in.)

Square steel tube 50.0 mm x 20.0 mm x t2.3 mm
(Square steel tube 1.97 in. x 0.79 in. x t0.091 in.)

Square steel tube 75.0 mm × 40.0 mm × t2.3 mm
(Square steel tube 2.95 in. × 1.57 in. × t0.091 in.)

G-63

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Front Axle Rocking Restrictor

A 120 mm (4.72 in.)

B 12.0 mm (0.472 in.)

C M10 × P1.25

D 30.0 mm (1.18 in.)

E M16 × P1.5

F 10 mm (0.39 in.)

G 20.0 mm (0.787 in.)

H 36.0 mm (1.42 in.)

I 64.0 mm (2.52 in.)

J 45.0 mm (1.77 in.)

K 20.0 mm (0.787 in.)

(1) Screw

M10 × P1.25 × L50.0 mm (1.97 in.)

(2) Screw

M16 × P1.5 × L50.0 mm (1.97 in.)

(3) Rocking Restrictor

Hydraulic Clutch Spring Compressor

A 70.0 mm (2.76 in.)

B 67.5 mm (2.66 in.)

C 56.0 mm (2.20 in.)

D 10 mm (0.39 in.)

E 72.0 mm dia. (2.83 in. dia.)

F 76.0 mm dia. (2.99 in. dia.)

G 80.0 mm dia. (3.15 in. dia.)

H 85.0 mm dia. (3.35 in. dia.)

I 30.0 mm (1.18 in.)

J 26.0 mm (1.02 in.)

Adaptor

Application : Use for testing the hydraulic pump flow.

A PF 3/8 (for testing hose)

B 0.52 rad (30 °)

C G 1/2

D 15.0 mm (0.591 in.)

E 18.0 mm (0.709 in.)

F 40.0 mm (1.57 in.)

G HEX. 27 mm

W10545380

W1071025

W1071249

G-64

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Clutch Compression Tool

Application : Use exclusively for pushing the thrust collar to remove

the external snap ring.

A 60.0 mm (2.36 in.)

B 120 mm (4.72 in.)

C M18 × P1.5 screw

D 45.0 mm (1.77 in.)

E 115 mm (4.53 in.)

F 12.0 mm (0.472 in.)

G 32.5 mm (1.28 in.)

H 65.0 mm (2.56 in.)

I 25.0 mm (0.984 in.)

J 110 mm dia. (4.33 in. dia.)

K 98.0 mm dia. (3.86 in. dia.)

L 90.0 mm dia. (3.54 in. dia.)

M 18.0 mm dia. (0.709 in. dia.)

N 12.0 mm (0.472 in.)

O 30.0 mm (1.18 in.)

P 35.0 mm (1.38 in.)

(1) Centering Guide
(2) Thrust Collar Holder

(3) Nut (M18 × P1.5)

W10532280

G-65

M108S, WSM

IMPORTANTQ

CAUTION

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

9. TIRES

[1] TYPE OF TIRES

• Do not use tires larger than specified.

Type of Tire Front Rear

9.5L-15

10.0-16 6PR

Farm Tire

12.4-24 6PR

13.6-24 6PR

13.6R24

[2] TREAD ADJUSTMENT

• When working on slopes or when working with trailer, set the wheel tread as wide as practical for maximum

stability.

• Support tractor securely on stands before removing a wheel.

• Never operate tractor with a loose rim, wheel, or axle.

16.9-34 6PR

18.4-34

18.4R36

18.4-30

18.4R30

W1019656

(1) Front Wheel

Adjusting Front Tread

Front tread width can be adjusted as shown with the standard

equipped tires.

To change the tread width.

1. Remove the wheel rim and disk mounting bolts.

2. Change the position of the rim and disk (right and left) to the

desired position, and tighten the bolts.

3. Adjust the toe-in. (Refer to “[5] CHECK POINTS OF EVERY

200 HOURS” in this section.)

• Always attach wheel as shown in the drawing.

• If not attached as illustrated, transmission parts may be
damaged.

• When re-fitting or adjusting a wheel, tighten the bolts to the
following torques then recheck after driving the tractor 200
m (200 yards) and thereafter according to service interval.
Refer to “Check Wheel Mounting Nuts Tightening Torques”.
(Refer to “[3] CHECK POINTS OF EVERY 50 HOURS” in
this section.)

(1) Nut

W1056420

G-66

M108S, WSM

NOTEQ

IMPORTANTQ

KiSC issued 05, 2012 A

G GENERAL

13.6-24

3.6R24

12.4-24

1565 mm (61.61 in.) 1675 mm (65.94 in.)

A : Tread

• Need to limit turning angle depended on the tire size. Refer to the chart provided for additional
instructions.

Front Wheel Steering Angle

1. Inflate the tires to the specified pressure.

2. Adjust turning angle with the stopper bolts table of the below.

3. The right side is similarly adjusted.

• Always check if tires contact with tractor or loader frame
assemblies.

(1) Stopper Bolt B : Front

Stopper Bolt (ex. LH stopper bolt)

Angle 0.52 rad (30 °) 0.58 rad (33 °) 0.65 rad (37 °) 0.73 rad (42 °) 0.79 rad (45 °) 0.87 rad (50 °)

Stopper

A : 5 mm (0.2 in.) Collar

W1057295

G-67

M108S, WSM

IMPORTANTQ

KiSC issued 05, 2012 A

(2) Rear Wheel

[Steel disc]

G GENERAL

Adjusting Rear Tread

Rear tread width can be adjusted as shown with the standard

equipped tires.

To change the tread width.

1. Remove the wheel rim and / or disc mounting bolts.

2. Change the position of the rim and / or disc (right and left) to the
desired position, and tighten the bolts.

• Always attach tires as shown in the drawings.

• If not attached as illustrated, transmission parts may be
damaged.

• When re-fitting or adjusting a wheel, tighten the bolts to the
following torques then recheck after driving the tractor 200
m (200 yards) and thereafter according to service interval.
Refer to “[3] CHECK POINTS OF EVERY 50 HOURS” in this
section.

(1) Rim Disc Nut (2) Wheel Nut

W1057789

460 / 85R34

(18.4R34)

1560 mm

(61.42 in.)

1755 mm

(69.09 in.)

[Cast iron disc]

460 / 85R34

(18.4R34)

(1) Rear Wheel Disc (2) Rear Wheel Rim A :Tread

1505 mm

(59.25 in.)

1665 mm

(65.55 in.)

1850 mm

(72.83 in.)

1705 mm

(67.13 in.)

1860 mm

(73.23 in.)

1865 mm

(73.43 in.)

G-68

M108S, WSM

CAUTION

IMPORTANTQ

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

[3] WHEEL HUB

Front wheel hub Rear wheel hub

Screw circle diameter

(A)

Number of screws 8 8

Screws M16 x P1.5 M16 x P1.5

Hub pilot diameter (B) 152.4 mm (6 in.) 152.4 mm (6 in.)

203.2 mm (8 in.) 203.2 mm (8 in.)

W1043392

[4] TIRE PRESSURE

• Do not attempt to mount a tire. This should be done by a qualified person with the proper equipment.

• Do not use tires larger than specified.

• When you intend to mount different size of tires from equipped ones, consult your distributor about front
drive gear ratio for detail.

• Excessive wear of tires may occur due to improper gear ratio.

Through the tire pressure is factory-set to the prescribed level, it
naturally drops slowly in the course of time. Thus, check it every day
and inflate as necessary.

To inflate the wheel tires, use an air compressor or hand pump.

Q Recommended Inflation Pressure

• Maintain the pressure shown below for normal use.

Tire sizes Inflation pressure

2

, 36 psi)

2

, 32 psi)

2

, 24 psi)

2

, 22 psi)

2

, 23 psi)

2

, 18 psi)

2

, 20 psi)

2

, 18 psi)

2

, 16 psi)

2

, 16 psi)

Front

Rear

9.5 L - 15 250 kPa (2.5 kgf/cm

10.00 - 16, 6PR 220 kPa (2.2 kgf/cm

12.4 - 24, 6PR 170 kPa (1.7 kgf/cm

13.6 - 24, 6PR 150 kPa (1.5 kgf/cm

13.6R24 160 kPa (1.6 kgf/cm

16.9 - 34, 6PR 120 kPa (1.2 kgf/cm

18.4 - 34 140 kPa (1.4 kgf/cm

18.4R34 120 kPa (1.2 kgf/cm

18.4-30 110 kPa (1.1 kgf/cm

18.4R30 110 kPa (1.1 kgf/cm

• Maintain the maximum pressure in front tires, if using a front
loader of when equipped with a full load of front weights.

(A) Insufficient
(B) Standard

(C) Excessive
(D) Ground

W1027488

G-69

M108S, WSM

IMPORTANTQ

CAUTION

KiSC issued 05, 2012 A

G GENERAL

[5] TIRE LIQUID INJECTION

Auxiliary weights can be used to increase traction force for plowing in fields or clayey grounds.

Another way is to inject water or another liquid, such as a calcium chloride solution in the tires. Water must not be
used in winter since it freezes at 0 °C (32 °F). The calcium chloride solution will not freeze and moreover, affords
higher effect than water since its specific gravity is higher than that of water by about 20 %. Below is an explanation
of calcium chloride solution injection.

• Do not fill the front tires with liquid.

Preparation of Calcium Chloride Solution

• When making a calcium chloride solution, do not pour water
over calcium chloride since this results in chemical reaction
which will cause high temperature. Instead add a small
amount of calcium chloride to the water at a time until the
desired solution is achieved.

Freezing temp.

−5 °C (23 °F) 12 kg (26.4 lbs)

−10 °C (14 °F) 21 kg (46.3 lbs)

−15 °C (5 °F) 28 kg (61.7 lbs)

−20 °C (−4 °F) 34 kg (75.0 lbs)

−25 °C (−13 °F) 40 kg (88.2 lbs)

−33 °C (−22 °F) 44 kg (97.0 lbs)

−35 °C (−31 °F) 49 kg (108 lbs)

−40 °C (−40 °F) 52 kg (114.6 lbs)

−45 °C (−49 °F) 56 kg (123.5 lbs)

−50 °C (−58 °F) 61 kg (134.5 lbs)

Weight of CaCl

2 to be dissolved in 100 L (26.5

U.S.gals, 22.0 lmp.gals) of water

(a) Water (b) CaCl

2 (Calcium Chloride)

W1033083

G-70

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Attaching Injector

1. Lift the rear tires off the ground.

2. Turn the tire so that the air valve is at the top.

3. Remove the air valve, and attach the injector (Code No. 07916-

52501).

(1) Injector (2) Hose

W1033331

G-71

M108S, WSM

CAUTION

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

Injection

• When a calcium chloride solution is used, cool it before
pouring it into the tire.

• Do not fill tires with water or solution more than 75 % of full
capacity (to the valve stem level).

• To avoid damage of transmission, do not use rear wheel
weights and liquid ballast at the same time.

The following four ways can be used to inject water or a calcium

chloride solution into tires.

1. Gravity injection (Fig. 1)

2. Pump injection (Fig. 2)

3. Pressure tank injection (Fig. 3)

4. Injection directly from tap (only when water is being used).

• Once injection is completed, reset the air valve, and pump
air into the tire to the specified pressure.

Weight of calcium chloride solution filling 75 % of full capacity of

a tire.

Tire sizes 16.9-34

Slush free at −10 °C (14 °F)
Solid at −30 °C (−22 °F )
[Approx. 1 kg (2 lbs.) CaCl
4 L (1 gal.) of water]

Slush free at −24 °C (−11 ° F )
Solid at −47 °C (−53 °F )
[Approx. 1.5 kg (3.5 lbs.) CaCl
per 4 L (1 gal.) of water]

Slush free at −47 °C (−53 °F)
Solid at −52 °C (−62 °F )
[Approx. 2.25 kg (5 lbs.) CaCl
per 4 L (1 gal.) of water]

2 per

18.4R30

18.4-30

342 kg

(755 lbs)

376 kg

2

(829 lbs)

399 kg

2

(880 lbs)

385 kg

(848 lbs)

414 kg

(912 lbs)

436 kg

(960 lbs)

18.4R34

18.4 - 34

417 kg

(920 lbs)

457 kg

(1007 lbs)

490 kg

(1081 lbs)

(1) Pump
(2) Pressure Tank
(3) Compressor
(4) Air
(5) Water

(A) Correct : 75 %

Air compresses like a cushion

(B) Incorrect : 100 % full water can not

be compressed

W1033435

G-72

M108S, WSM

KiSC issued 05, 2012 A

G GENERAL

Draining Water or Solution

1. Lift the rear tires off the ground.

2. Turn the tire so that the air valve is at the bottom.

3. Remove the air valve, and drain liquid (liquid can only be drained
to the level of the valve and liquid under that level remains
inside).

4. To drain liquid completely, use the injector (1) (Code No. 07916-

52501), and direct compressed air into the tire to force out the
liquid through the injector's vent (3).

(1) Injector
(2) Hose
(3) Vent

A : Compressed Air

W1045167

G-73

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

G GENERAL

10. IMPLEMENT LIMITATIONS

The KUBOTA Tractor has been thoroughly tested for proper performance with implements sold or approved by
KUBOTA. Use with implements which are not sold or approved by KUBOTA and which exceed the maximum
specifications listed below, or which are otherwise unfit for use with the KUBOTA Tractor may result in malfunctions
or failures of the tractor, damage to other property and injury to the operator or others. [Any malfunctions or failures
of the tractor resulting from use with improper implements are not covered by the warranty.]

Tread (max. width) Operating condition

Front

without spacer with spacer

1675 mm

(65.94 in.)

Implement weight : W1

and / or size

As in the following list

(Shown on the next page)

Lower link end max. loading weight.............W0

Implement weight........................................The implement's weight which can be put on the lower link : W1

Max. drawbar load.......................................W2

Trailer loading weight..................................The max. loading weight for trailer (without trailer's weight) : W3

2035 mm

(80.12 in.)

Max. drawbar Load : W2

800 kg (1760 lbs)

Rear

2110 mm

(83.07 in.)

Actual figures

3000 kg (6614 lbs)

(without trailer brake)

IMPORTANT
Tractor with front
spacer option is not
approved for use
with front loader.

Trailer loading weight : W3

Max. capacity

Lower link max.

lifting capacity : W0

2700 kg

(5952 lbs)

13000 kg (28660 lbs)

(with trailer brake)

• Implement size may vary depending on soil operating conditions.

G-74

M108S, WSM

KiSC issued 05, 2012 A

No. Implement Remarks M108S

Max. Tank Capacity 5000 L (1321 U.S.gals, 1100 Imp.gals)

1Slurry Tank

Max. Load Capacity 6000 kg (13200 lbs)
Max. Load Capacity 7000 kg (15400 lbs)

2 Trailer

Max. Drawbar Load 1500 kg (3300 lbs)

Rotary-Cutter
(3P type)

Max. Cutting Width 3200 mm (126 in.)
Max. Weight 800 kg (1764 lbs)

Rotary-Cutter
(Drawbar

Max. Cutting Width 6096 mm (240 in.)

type)

3 Mower

Disc Mower
(Drawbar

Max. Cutting Width 3962 mm (156 in.)

type)
Flail Mower

(Heavy)

Max. Cutting Width 4267 mm (168 in.)
Max. Weight 1360 kg (3000 lbs)

Sickle Bar Max. Cutting Width 3050 mm (120 in.)

Mid 1000 L (260 U.S.gals, 220 Imp.gals)

4 Sprayer

Max. Tank­capacity

Rear 3P 1000 L (260 U.S.gals, 220 Imp.gals)
Drawbar 5500 L (1450 U.S.gals, 1210 Imp.gals)

Max. Tilling Width 2700 mm (108 in.)

5 Rotary Tiller

Max. Weight 1200 kg (2645 lbs)

14 in. x 5
16 in. x 4

Max. Size

6 Bottom Plow

18 in. x 4
20 in. x 3
22 in. x 2
24 in. x 1

Max.
Weight

3P Type 900 kg (1980 lbs)

Max. Size 24 in. x 28

7

Disc­harrow

3P Type

Max. Harrowing Width 3300 mm (130 in.)
Max. Weight 900 kg (1980 lbs)

Drawbar Type Max. Harrowing Width 4300 mm (168 in.)

Max. Size 28 in. x 4

8 Disc Plow

Max. Weight 900 kg (1980 lbs)
Numbers of Cultivating

9 Sub Soiler

Tines
Cultivating Depth 550 mm (22 in.)

G GENERAL

3

W1012736

G-75

M108S, WSM

NOTEQ

KiSC issued 05, 2012 A

No. Implement Remarks M108S

Max. Width 5490 mm (216 in.)

10 Cultivator

Number of Rows 6
Max. Weight 900 kg (1980 lbs)
Max. Cutting Width 2600 mm (102 in.)

11 Front Blade *1, *2

Max. Oil Pressure 19.6 MPa (200 kgf/cm
Max. Cutting Width 2600 mm (102 in.)

12 Rear Blade

Max. Oil Pressure 19.6 MPa (200 kgf/cm
Max. Lifting Capacity 1300 kg (2866 lbs)

13 Front Loader *1, *2

Max. Oil Pressure
(extra hydro kit)

20.5 MPa (210 kgf/cm

Max. Cutting Width 2430 mm (96 in.)

14 Box Blade

Max. Weight 800 kg (1760 lbs)
Max. Width 2600 mm (102 in.)

15 Snow Blade

Max. Weight 800 kg (1760 lbs)

2

, 2842 psi)

2

, 2842 psi)

2

, 2975 psi)

G GENERAL

• Implement size may very depending on soil operating conditions.
*1 Must remove front weight with this implement.
*2 Need subframe.

W1043839

G-76

1 ENGINE

KiSC issued 05, 2012 A

MECHANISM

KiSC issued 05, 2012 A

CONTENTS

1. FEATURE ...................................................................................................... 1-M1

2. ENGINE BODY ............................................................................................. 1-M2

[1] CYLINDER BLOCK................................................................................. 1-M2

[2] HALF-FLOATING HEAD COVER .......................................................... 1-M2

[3] CYLINDER HEAD ................................................................................... 1-M3

[4] CENTER DIRECT INJECTION SYSTEM (E-CDIS)............................. 1-M3

[5] PISTON.................................................................................................... 1-M4

[6] BUILT-IN DYNAMIC BALANCER .......................................................... 1-M4

3. LUBRICATING SYSTEM .............................................................................. 1-M5

[1] OIL COOLER .......................................................................................... 1-M5

4. COOLING SYSTEM...................................................................................... 1-M6

[1] THERMOSTAT ........................................................................................ 1-M6

[2] BOTTOM BYPASS SYSTEM................................................................. 1-M7

5. FUEL SYSTEM .............................................................................................1-M8

[1] GENERAL................................................................................................ 1-M8

6. INTAKE AND EXHAUST SYSTEM............................................................. 1-M9

[1] INTAKE AIR HEATER............................................................................ 1-M9

[2] TURBOCHARGER................................................................................... 1-M9

[3] INTERCOOLER ..................................................................................... 1-M10

7. COMMON RAIL SYSTEM (CRS).............................................................. 1-M11

[1] GENERAL.............................................................................................. 1-M11

[2] SUPPLY PUMP..................................................................................... 1-M13

[3] RAIL ....................................................................................................... 1-M16

[4] INJECTOR ............................................................................................. 1-M17

[5] ENGINE CONTROL SYSTEM ............................................................. 1-M20

(1) Engine Control System Diagram...................................................... 1-M20

(2) Engine ECU (Electronic Control Unit) .............................................. 1-M21

(3) Sensors............................................................................................ 1-M22

8. EXHAUST GAS RECIRCULATION (EGR) SYSTEM .............................. 1-M25

[1] GENERAL.............................................................................................. 1-M25

[2] EGR VALVE.......................................................................................... 1-M26

[3] REED VALVE........................................................................................ 1-M27

M108S, WSM

KiSC issued 05, 2012 A

1. FEATURE

ENGINE

The diesel engines have the feature of low cost and
high efficiency. On the other hand, it is said that an
amount of the nitrogen oxide (NOx) and particulate
matter (PM) contained in their exhaust gas is relatively
large, and the emission regulation by the EPA
(Environmental Protection Agency) has been gradually
strengthened in North America recently. Kubota, which
has been positively engaging in the strict emission
regulations of the world, has developed the new engine
conforming to the regulation of the EPA Tier III that
becomes effective since January 2007, by adopting the
CRS (Common Rail System) and the EGR (Exhaust Gas
Recirculation) in the course of pursuing more clean
exhaust gas.

The common rail system uses a type of accumulation
chamber called a rail to store pressurized fuel, and
injectors that contain electronically controlled solenoid
valves to inject the pressurized fuel into the cylinders.

Because the engine ECU (Electronic Control Unit)
controls the injection system (including the injection
pressure, injection rate, and injection timing), the
injection system is independent and thus unaffected by
the engine speed or load.

Because the engine ECU can control injection
quantity and timing to a high level of precision, even
multi-injection (multiple fuel injections in one injection
stroke) is possible.

This ensures a stable injection pressure at all times,
even in the low engine speed range, and dramatically
decreases the amount of black smoke ordinarily emitted
by a diesel engine during start-up and acceleration.

As a result, exhaust gas emissions are cleaner and
reduced, and higher power output is achieved.

W1012645

1-M1

M108S, WSM

KiSC issued 05, 2012 A

2. ENGINE BODY

[1] CYLINDER BLOCK

ENGINE

This engine employs separate type crankcases - the
crankcase 1 (1) with combustion part and the crankcase
2 (2) which supports the crankcase 1 (1) and reduces
noise.

Since it is a hanger type, you can easily assemble /
disassemble it. The cylinder is a linerless type which
enables good cooling operation, less strain and good
abrasion resistance.

(1) Crankcase 1
(2) Crankcase 2

(3) Oil Pan

W1013119

[2] HALF-FLOATING HEAD COVER

The rubber packing is fitted in to maintain the head
cover 0.5 mm (0.02 in.) or so off the cylinder head. This
arrangement helps reduce noise coming from the
cylinder head.

(1) Cylinder Head Cover (2) Rubber Packing

W1013327

1-M2

M108S, WSM

KiSC issued 05, 2012 A

[3] CYLINDER HEAD

This engine employs four valve system, the cylinder
head is provided with double intake passenge in order to
ensure appropriate air suction and give an optimum swirl.

(1) Intake (2) Exhaust

[4] CENTER DIRECT INJECTION SYSTEM (E-CDIS)

V3 series DI engine adopts the Center Direct Injection
System (E-CDIS), in which the injection nozzle is
positioned upright at the center of the cylinder.

This system serves to inject fuel directly at the center
of the cylinder. By so doing, injected fuel and suction air
can be mixed more uniformly, leading to more stable,
higher combustion performance. In other words, cleaner
emission, higher power output, lower fuel consumption,
lower operating noise and higher start-up performance
have been achieved.

V3 series DI engine has two intake valves and two
exhaust valves per each cylinder.

The rocker arm (5) contacts a bridge arm (6) instead
of the valves stem tip.

The bridge arm then contacts both intake valves or
both exhaust valves and causes two valves to open
simultaneously.

(1) Injector
(2) Exhaust Valve
(3) Piston

ENGINE

W1013336

(4) Intake Valve
(5) Rocker Arm
(6) Bridge Arm

W11094950

1-M3

M108S, WSM

KiSC issued 05, 2012 A

[5] PISTON

ENGINE

Piston’s skirt is coated with molybdenum disulfide+,
which reduces the piston slap noise and thus the entire
operating noise.

[6] BUILT-IN DYNAMIC BALANCER

+Molybdenum disulfide (MoS

2)

The molybdenum disulfied serves as a solid lubricant,
like a Graphite or Teflon. This material helps resist metal
wears even with little lube oil.

(1) Molybdenum Disulfide

W1015665

The piston profile (1) of the V38DICR-TIE3-S engine
has been optimized in compliance with high
pressurization of fuel injection. Moreover, the piston pin
portion of the connecting rod (2) has been tapered and
the stress concentration has been leveled for the
countermeasure of fatigue due to enhancement of high­power. Accordingly, its reliability has been further
improved.

(1) Piston Profile (2) Connecting Rod

W1013438

Engine are sure to vibrate by piston’s reciprocation.
Theoretically, three-cylinder engines are much less
prone to cause vibration than four-cylinder ones (second
inertia, etc.). However, any engine has many moving
parts in addition to its pistons and cannot be completely
free from vibration.

The four cylinder engine is fitted with balance weight
on crankcase to absorb the second inertia mentioned
above and reduce vibration.

W1013617

1-M4

M108S, WSM

KiSC issued 05, 2012 A

3. LUBRICATING SYSTEM

[1] OIL COOLER

ENGINE

V3 series engine has a water-cooled oil cooler that
not only cools hot oil, but also warms the cool engine oil
shoftly after start up.

As shown in the figure, the oil flows inside the
connected cooler plate, whereas coolant is kept
circulating outside the cooler plate, thereby cooling down
or warming the oil.

(A) Oil Inlet Port
(B) Oil Outlet Port

(a) Coolant Inlet Port
(b) Coolant Outlet Port

W10344770

1-M5