Kubota B1820, B2230, B2530, B3030 Service Manual

WORKSHOP MANUAL

KiSC issued 03, 2007 A

TRACTOR

B1830,B2230,B2530,B3030

TO THE READER

KiSC issued 03, 2007 A

This Workshop Manual has been prepared to provide servicing personnel with
information on the m echanism, service and m aintenance of KUBOTA T ractor B1830,
B2230, B2530 and B3030. It is divided in to three parts, “General”, “Mechani sm” and
“Servicing” for each section.

■ General

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

■ Mechanism

Information on the construction and function are included. This part should be
understood before proceeding with troubleshooting, disassembling and servicing.

Refer to Diesel Engi ne / Tractor Mechanism Workshop Manual ( Code No. 9Y021­01874 / 9Y021-18201) for the one which has not been described to this workshop
manual.

■ 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.

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.

January 2007

© KUBOTA Corporation 2007

B1830, B2230, B2530, B3030, WSM

SAFETY FIRST

KiSC issued 03, 2007 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.

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

followed.

■ 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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B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 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) un der pressure
can penetrate the skin causing serious injury. Relieve
pressure before disconnecting hydraulic or fuel lines.
Tighten all connections before applying pressure.

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 b attery, especially when
charging the battery.

• Make sure that no fuel has been spilled on the engine.

2

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SAFETY INSTRUCTIONS

VENTILATE WORK AREA

• If the engine must be running to do some work, make
sure the area is well ventilated . Neve r run the eng ine
in a closed area. The exhaust gas contains poisonous
carbon monoxide.

PREVENT ACID BURNS

• Sulfuric acid in batte ry electrolyte is poisonou s. 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 prot ectio n regulati ons whe n disp osing
of oil, fuel, coolant, electrolyte and other harmful
waste.

PREPARE FOR EMERGENCIES

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

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

3

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 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.

■ ROPS and CABIN

4

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SAFETY INSTRUCTIONS

5

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SAFETY INSTRUCTIONS

6

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SAFETY INSTRUCTIONS

7

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SAFETY INSTRUCTIONS

■ CABIN

Careful operation is your best insurance against an accident.

Read and understand carefully this section of the separately issued operator’s manual before operating the
tractor.

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B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SPECIFICATIONS

SPECIFICATIONS

[HST Model]

Model B2230 B2530 B3030

PTO power 12.5 kW (17.0 PS)* 14.0 kW (19.0 PS)* 16.9 kW (23.0 PS)*

Maker KUBOTA
Model D1105-E2-D21-EU
Type E-TVCS, water-cooled, 4-cycle diesel

Number of cylinders 3 4
Bore and stroke 76 × 73.6 mm (3.0 × 2.9 in.) 78 × 78.4 mm (3.1 × 3.1 in.) 78 × 78.4 mm (3.1 × 3.1 in.)
Total displacement 1001 cm
Engine gross power 16.2 kW (22.0 PS)* 18.4 kW (25.0 PS)* 22.1 kW (30.0 PS)*

Engine

Capacities

Dimensions

Weight

Travelling
system

NOTE: * Manufacture's estimate

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

Rated revolution 2700 min
Maximum torque

Battery 12 V, RC : 79 min, CCA : 433 A
Starting system Electric starting with cell starter 12 V, 1.4 kW
Lubricating system Forced lubrication by trochoidal pump
Cooling system Pressurized radiator, forced circulation with water pump

Fuel

Fuel tank 28 L (7.4 U.S.gals, 6.2 Imp.gals)

Engine crankcase (with filter)

Engine coolant
Transmission case 17 L (4.5 U.S.gals, 3.7 Imp.qts)
Front axle case 3.7 L (3.9 U.S.qts, 3.3 Imp.qts)

Tire

Overall length
(with 3P)

Overall width (min. tread) 1105 mm (43.5 in.) 1095 mm (43.1 in.) 1365 mm (53.7 in.)
Overall height
Wheel base 1500 mm (59.1 in.) 1666 mm (65.6 in.)

Minimum ground clearance 240 mm (9.5 in.) 270 mm (10.6 in.) 315 mm (12.4 in.)

Tread

ROPS 745 kg (1643 Ibs) 750 kg (1654 Ibs) 840 kg (1852 Ibs)
CABIN 955 kg (2106 Ibs) 960 kg (2117 Ibs) 1035 kg (2282 Ibs)
Clutch N/A
Steering Hydrostatic power steering
Transmission Main-hydrostatic transmission, 3 range gear shift (3 forward and 3 reverse)
Brake Wet disk type
Min. turning radius (with brake) 2.1 m (6.9 feet)
Differential Bevel gear

Front 6 - 12B 6 - 12 6.00- 2 7.00-12

Rear 8 - 16 9.5 - 16 9.5 - 18 10.5-18
ROPS 2735 mm (107.7 in.) 2900 mm (114.2 in.)

CABIN 2835 mm (111.6 in.) 3010 mm (118.6 in.)

ROPS 2260 mm (89.0 in.) 2290 mm (90.2 in.) 2320 mm (91.3 in.)
CABIN 2060 mm (81.1 in.) 2090 mm (82.3 in.) 2125 mm (83.7 in.)

Front 835 mm (32.9 in.) 935 mm (36.8 in.)
Rear

(6.3 kgf·m , 1 3 .9 l b f·ft )

3

62 N·m

855 to 1075 mm
(33.7 to 42.3 in.)

(61.1 cu.in.) 1123 cm3 (68.5 cu.in.) 1498 cm3 (91.4 cu.in.)

Diesel fuel No. 2-D [above −10 °C (14 °F)],

Diesel fuel No. 1 [below −10 °C (14 °F)]

3.0 L

(3.2 U.S.qts, 2.6 Imp.qts)

Farm Turf Farm Turf

D1105-E2-D21-EU

-1

(rpm) 2600 min-1 (rpm)

72 N·m

(7.3 kgf·m, 16.2 lbf·ft)

(5.5 U.S.qts, 4.6 Imp.qts)

5.2 L

22 x

24 x 8.5-

8.50-12
31 x

13.5-15

850 to 1095 mm
(33.5 to 43.1 in.)

12

315/

75D-15

V1505-E2-D21-EU

92 N·m

(9.4 kgf·m , 2 0 .7 l b f·ft)

31 L

(8.1 U.S.gals, 6.8 Imp.gals)

4.1 L

(4.3 U.S.qts, 3.6 Imp.qts)

4.7 L

(5.0 U.S.qts, 4.1 Imp.qts)

7-12 24 x 8.5-12

12.4-16 13.6-16

1050 mm

(41.3 in.)

W1031445

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B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[HST Model] (Continued)

Model B2230 B2530 B3030

Hydraulic control system Position control

Pump capacity
Hydraulic
system

PTO system

Three point hitch SAE Category 1

Max. lift force

Rear

Mid

3P : 20.5 L/min (5.4 gals/min)

Power steering : 15.4 L/min (1.4 gals/min)

14.8 L/min (3.9 gals/min)

At lift points 970 kg (2139 Ibs)
24 in. behind

lift points
PTO shaft SAE 1-3/8, 6 splines
Revolution 1 speed (540 min
PTO shaft U.S.A. No.5 (KUBOTA 10-tooth) involute spline
Revolution 1 speed (2500 min

760 kg (1676 Ibs)

-1

(rpm) at 2592 engine min-1 (rpm))

-1

(rpm) at 2600 engine min-1 (rpm))

SPECIFICATIONS

3P: 19.7 L/min

(5.2 gals/min)

Power steering:

W1032807

10

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

SPECIFICATIONS

[Manual Transmission Model]

Model B1830 B2230 B2530

PTO power 11.0 kW (15.0 PS)* 13.2 kW (18.0 PS)* 14.7 kW (20.0 PS)*

Maker KUBOTA
Model D905-E2-D21-EU D1005-E2-D21-EU D1105-E2-D21-EU
Type E-TVCS, water-cooled, 4-cycle diesel
Number of cylinders 3

Bore and stroke 72 × 78.4 mm (2.8 × 3.1 in.) 76 × 73.6 mm (3.0 × 2.9 in.) 78 × 78.4 mm (3.1 × 3.1 in.)
Total displacement 898 cm
Engine gross power 13.2 kW (18.0 PS)* 16.2 kW (22.0 PS)* 18.4 kW (25.0 PS)*

Engine

Capacities

Dimensions

Weight

Travelling
system

Hydraulic
system

NOTE: * Manufacture's estimate

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

Rated revolution 2700 min
Maximum torque

Battery 12 V, RC : 79 min, CCA : 433 A
Starting system Electric starting with cell starter 12 V, 1.4 kW
Lubricating system Forced lubrication by trochoidal pump
Cooling system Pressurized radiator, forced circulation with water pump

Fuel
Fuel tank 28 L (7.4 U.S.gals, 6.2 Imp.gals)

Engine crankcase (with filter) 3.0 L (3.2 U.S.qts, 2.6 Imp.qts)
Engine coolant

Transmission case Bi-Speed : 16.5 L (4.4 U.S.gals, 3.6 Imp.qts), No Bi-Speed : 15 L (4.0 U.S.gals, 3.3 Imp.qts)
Front axle case 3.7 L (3.9 U.S.qts, 3.3 Imp.qts)

Tire

Overall length
(with 3P)

Overall width (min-tread) 1025 mm (40.4 in.) 1105 mm (43.5 in.) 1095 mm (43.1 in.)
Overall height
Wheel base 1500 mm (59.1 in.)

Minimum ground clearance 220 mm (8.7 in.) 240 mm (9.5 in.) 270 mm (10.6 in.)

Tread

ROPS 705 kg (1555 Ibs) 720 kg (1588 Ibs) 725 kg (1599 Ibs)
CABIN – 930 kg (2051 Ibs) 935 kg (2062 Ibs)
Clutch SAE 1-3/8, 6 splines
Steering Hydrostatic power steering
Transmission Gear shift (9 forward and 9 reverse)
Brake Wet disk type
Min. turning radius (with brake) 2.1 m (6.9 feet)
Differential Bevel gear
Hydraulic control system Position control

Pump capacity
Three point hitch SAE Category 1

Max. lift force

ROPS 4.5 L (4.7 U.S.qts, 4.0 Imp.qts)
CABIN – 5.2 L (5.5 U.S.qts, 4.6 Imp.qts)

Front 6 - 12B 6 - 12 6.00 - 12 7.00 - 12 22 x 8.50-12 24 x 8.5-12
Rear 8 - 16 9.5 - 16 9.5 - 18 10.5 - 18 31 x 13.5-15 315/75D-15
ROPS 2735 mm (107.7 in.)
CABIN – 2835 mm (111.6 in.)

ROPS 2240 mm (88.2 in.) 2260 mm (89.0 in.) 2290 mm (90.2 in.)
CABIN – 2060 mm (81.1 in.) 2090 mm (82.3 in.)

Front 835 mm (32.9 in.)
Rear

At lift points 970 kg (2139 Ibs)
24 in. behind

lift points

3

(54.8 cu.in.) 1001 cm3 (61.1 cu.in.) 1123 cm3 (68.5 cu.in.)

54 N·m

(5.5 kgf·m , 1 2 .1 l b f·ft )

800 to 970 mm

(31.5 to 38.2 in.)

-1

(rpm)

62 N·m

(6.3 kgf·m, 13.9 lbf·ft)

Diesel fuel No. 2-D [above −10 °C (14 °F)],

Diesel fuel No. 1 [below −10 °C (14 °F)]

Farm Turf

855 to 1075 mm
(33.7 to 42.3 in.)

3P : 20.5 L/min (5.4 gals/min)

Power steering :15.4 L/min (4.1 gals/min)

760 kg (1676 Ibs)

(7.3 kgf·m , 1 6 .2 l b f·ft)

850 to 1095 mm
(33.5 to 43.1 in.)

72 N·m

W1037169

11

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[Manual Transmission Model] (Continued)

Model B1830 B2230 B2530

Rear
PTO system

Mid

PTO shaft SAE 1-3/8, 6 splines
Revolution 1 speed (540 min
PTO shaft U.S.A. No.5 (KUBOTA 10-tooth) involute spline
Revolution 1 speed (2500 min

-1

(rpm) at 2592 engine min-1 (rpm))

-1

(rpm) at 2600 engine min-1 (rpm))

SPECIFICATIONS

W1036972

12

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

TRAVELLING SPEEDS

[HST Model]

Model B2230 / B2530

Tire size (Rear)

Range gear shift
lever

Low

Middle

Forward

High
Max. Speed

(at 2850 engine
rpm)

Low

Middle

Reverse

High
Max. Speed

(at 2850 engine
rpm)

8 - 16

Farm

0 to 3.95
(0 to 2.5)

0 to 7.35
(0 to 4.6)

0 to 19.05
(0 to 11.8)

20.10
(12.5)

0 to 3.16
(0 to 2.0)

0 to 5.88
(0 to 3.7)

0 to 15.24

(0 to 9.5)

16.08
(10.0)

9.5 - 16
Farm

0 to 4.18
(0 to 2.6)

0 to 7.77
(0 to 4.8)

0 to 20.14
(0 to 12.5)

21.26

(13.2)

0 to 3.34
(0 to 2.1)

0 to 6.21
(0 to 3.9)

0 to 16.11
(0 to 10.0)

17.01

(10.6)

9.5 - 18
Farm

0 to 4.49

(0 to 2.8)

0 to 8.34

(0 to 5.2)

0 to 21.63

(0 to 13.4)

22.83
(14.2)

0 to 3.59

(0 to 2.2)

0 to 6.68

(0 to 4.2)

0 to 17.31

(0 to 10.8)

18.27
(11.4)

10.5 - 18

km/h

(mile/h)

0 to 4.69
(0 to 2.9)

0 to 8.73
(0 to 5.4)

0 to 22.63
(0 to 14.1)

0 to 3.75
(0 to 2.3)

0 to 6.98
(0 to 4.3)

0 to 18.10
(0 to 11.2)

Farm

23.88
(14.8)

19.11

(11.9)

TRAVELLING SPEEDS

31 × 13.5 -15

Turf

0 to 3.87
(0 to 2.4)

0 to 7.19
(0 to 4.5)

0 to 18.65
(0 to 11.6)

19.69
(12.2)

0 to 3.09
(0 to 1.9)

0 to 5.75
(0 to 3.6)

0 to 14.92

(0 to 9.3)

15.75
(9.8)

315 /75D -15

Turf

0 to 4.22
(0 to 2.6)

0 to 7.85
(0 to 4.9)

0 to 20.34
(0 to 12.6)

21.47
(13.3)

0 to 3.37
(0 to 2.1)

0 to 6.28
(0 to 3.9)

0 to 16.27
(0 to 10.1)

17.18
(10.7)

W1035065

Model B3030

Tire size (Rear) 12.4 - 16

Farm
Range gear shift lever km/h (mile/h)
Low 0 to 4.59 (0 to 2.9) 0 to 4.73 (0 to 2.9)
Middle 0 to 8.54 (0 to 5.3) 0 to 8.79 (0 to 5.5)

Forward

High 0 to 22.15 (0 to 13.8) 0 to 22.80 (0 to 14.2)
Max. Speed

(at 2750 engine rpm)

23.43 (14.6) 24.11 (15.0)

Low 0 to 3.67 (0 to 2.3) 0 to 3.78 (0 to 2.3)
Middle 0 to 6.83 (0 to 4.2) 0 to 7.03 (0 to 4.4)

Reverse

High 0 to 17.72 (0 to 11.0) 0 to 18.24 (0 to 11.3)
Max. Speed

(at 2750 engine rpm)

18.74 (11.6) 19.29 (12.0)

The company reserves the right to change the spe cifi ca tion s with out notic e.

13.6 - 16
Turf

W1033865

13

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[Manual Transmission Model]

Model B1830 / B2230 / B2530

Tire size (Rear)

Range gear
shift lever

1

Low

2 1.65 (1.0) 1.75 (1.1) 1.88 (1.2) 1.96 (1.2) 1.62 (1.0) 1.77 (1.1)
3 2.57 (1.6) 2.71 (1.7) 2.91 (1.8) 3.05 (1.9) 2.51 (1.6) 2.74 (1.7)
4

Middle

5 3.07 (1.9) 3.25 (2.0) 3.49 (2.2) 3.65 (2.3) 3.01 (1.9) 3.28 (2.0)
6 4.77 (3.0) 5.05 (3.1) 5.42 (3.4) 5.67 (3.5) 4.67 (2.9) 5.10 (3.2)

Forward

7

811.03
High

9 17.12

Max. Speed
(at 2850 engine
rpm)

1

Low

2 1.67 (1.0) 1.77 (1.1) 1.90 (1.2) 1.99 (1.2) 1.64 (1.0) 1.78 (1.1)
3 2.59 (1.6) 2.74 (1.7) 2.95 (1.8) 3.08 (1.9) 2.54 (1.6) 2.77 (1.7)
4

Middle

5 3.11 (1.9) 3.29 (2.0) 3.53 (2.2) 3.69 (2.3) 3.04 (1.9) 3.32 (2.1)
6 4.82 (3.0) 5.10 (3.2) 5.48 (3.4) 5.73 (3.6) 4.72 (2.9) 5.15 (3.2)

Reverse

7
8 11.15 (6.9) 11.80 (7.3) 12.67 (7.9) 13.25 (8.2) 10.92 (6.8) 11.91 (7.4)

High

9 17.31

Max. Speed
(at 2850 engine
rpm)

TRAVELLING SPEEDS

8 - 16

Farm

9.5 - 16
Farm

9.5 - 18
Turf

10.5 - 18
Farm

31 × 13.5-15

Turf

315 /75D-15

Turf

km/h

(mile/h)

1.00 (0.6) 1.05 (0.7) 1.13 (0.7) 1.18 (0.7) 0.98 (0.6) 1.06 (0.7)

1.85 (1.1) 1.96 (1.2) 2.11 (1.3) 2.20 (1.4) 1.82 (1.1) 1.98 (1.2)

6.65 (4.1) 7.03 (4.4) 7.55 (4.7) 7.90 (4.9) 6.51 (4.0) 7.10 (4.4)

(6.9)

(10.6)

18.07
(11.2)

11.67 (7.3) 12.53 (7.8) 13.11 (8.1) 10.80 (6.7) 11.78 (7.3)

18.10
(11.2)

19.11
(11.9)

19.44
(12.1)

20.52
(12.8)

20.34
(12.6)

21.47
(13.3)

16.76 (10.4) 18.28 (11.4)

17.69 (11.0) 19.30 (12.0)

1.01 (0.6) 1.07 (0.7) 1.14 (0.7) 1.20 (0.7) 0.99 (0.6) 1.08 (0.7)

1.87 (1.2) 1.98 (1.2) 2.13 (1.3) 2.23 (1.4) 1.84 (1.1) 2.00 (1.2)

6.73 (4.2) 7.11 (4.4) 7.64 (4.7) 7.99 (5.0) 6.58 (4.1) 7.18 (4.5)

(10.8)

18.27
(11.4)

18.30
(11.4)

19.32
(12.0)

19.66
(12.2)

20.75
(12.9)

20.56
(12.8)

21.71
(13.5)

16.95 (10.5) 18.49 (11.5)

17.89 (11.1) 19.51 (12.1)

W1034824

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B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

DIMENSIONS

[ROPS]

DIMENSIONS

15

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[CABIN]

DIMENSIONS

16

G GENERAL

KiSC issued 03, 2007 A

GENERAL

KiSC issued 03, 2007 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 -8

[1] GENERAL USE SCREWS, BOLTS AND NUTS................................... G-8

[2] STUD BOLTS............................................................................................ G-8

6. MAINTENANCE CHECK LIST....................................................................... G-9

7. CHECK AND MAINTENANCE..................... ....... ....................................... .. G-11

[1] DAILY CHECK........................................................................................ G-11

[2] CHECK POINTS OF INITIAL 50 HOURS........................................... G-13

[3] CHECK POINTS OF EVERY 50 HOURS........................................... G-17

[4] CHECK POINTS OF EVERY 100 HOURS......................................... G-19

[5] CHECK POINTS OF EVERY 200 HOURS......................................... G-26

[6] CHECK POINTS OF EVERY 300 HOURS......................................... G-29

[7] CHECK POINTS OF EVERY 400 HOURS......................................... G-31

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

[9] CHECK POINT OF EVERY 1500 HOURS ......................................... G-34

[10]CHECK POINT OF EVERY 1 YEAR................................................... G-35

[11]CHECK POINTS OF EVERY 2 YEARS.............................................. G-37

[12]OTHERS .................................................................................................. G-41

8. SPECIAL TOOLS.......................................................................................... G-47

[1] SPECIAL TOOLS FOR ENGINE .......................................................... G-47

[2] SPECIAL TOOLS FOR TRACTOR....................................................... G-53

[3] SPECIAL TOOLS FOR CABIN.............................................................G-56

9. TIRES............................................................................................................. G-58

[1] TIRE PRESSURE................................................................................... G-58

[2] TREAD..................................................................................................... G-59

(1) Front Wheels...................................................................................... G-60

(2) Rear Wheels ...................................................................................... G-61

[3] TIRE LIQUID INJECTION AND BALLAST........................................... G-63

10. IMPLEMENT LIMITATIONS.......................................................................... G-66

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

1. TRACTOR IDENTIFICATION

When contacting your loca l KUBOTA distr ibutor, alway s specify

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

(1) Tractor Identification Plate
(2) Tractor Serial Number
(3) Engine Serial Number
(4) CABIN Identification Plate

(CABIN Serial Number)

G GENERAL

[A] ROPS
[B] CABIN

W1010590

G-1

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

2. GENERAL PRECAUTIONS

• During disa ssembly, ca refully ar range removed parts in a cle an
area to prevent confusion later. Screws, bolts and nuts should be
installed in their original position to prevent reassembly errors.

• When special tools are requi red, use KUBOT A genuine speci al
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 reassem bling external snap rings or inte rnal 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 insert ing spring pins, their splits must face the direction
from which a force is applied. See the figure left side.

• To prevent dam age to the hydraulic s ystem, use only sp ecified
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

W10109040

G-2

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS
AND WIRING

To ensure safety and prevent damage to the machine and
surrounding equipm ent, heed the following pr ecautions 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 s ame 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 th e ba tter y cab le s, dis co nn ect t he n egat ive
cable first. When in stalling the b attery cables, c onnect the
positive cable first.

(1) Negative Terminal (2) Positive Terminal

W10111140

[1] WIRING

• Securely t ighten wiring terminals.

(1) Correct

(Securely Tighten)

(2) Incorrect

(Loosening Leads to Faulty Contact)

W10112160

• Do not let wiring contact dangerous part.

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

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

• Securely insert grommet.

(1) Grommet (A) Correct

(B) Incorrect

W10113130

W10113880

G-3

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

• Securely clamp, being careful not to damage wiring.

(1) Clamp

• Wind Clamp Spirally

(2) Wire Harness

(3) Clamp
(4) Welding Dent

W10114580

• 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

W10115870

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

(1) Wiring (A) Incorrect

W10116700

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

(1) Cover

• Securely Install Cover
W10117350

G-4

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[2] BATTERY

[3] FUSE

G GENERAL

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

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

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

• After connecting cables to battery terminal posts, apply high
temperature grease to them a nd sec urely in stall t erminal covers
on them.

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

CAUTION

• Take care not to let battery liquid spill on your skin and
clothes. If contaminated, wash it off with water immediately.

• Before recharging the battery, remove it from the machine.

• Before recharging, remove cell caps.

• Do recharging in a well- ventilated place where there is no
open flame nearby, as hydrogen gas and oxygen are formed.

W10118160

[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

W10120920

• For connector with lock, push lock to separate.

(A) Push

W10122110

• In separating connectors, do not pull wire harnesses.

• Hold connector bodies to separate.

(A) Correct (B) Incorrect

W10122720

G-5

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 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

W10123460

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

(A) Correct (B) Incorrect

W10124300

• 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

W10125190

W10126840

G-6

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

4. LUBRICANTS FUEL AND COOLANT

Capacity

No. Place

1Fuel tank

Coolant

2

(with recovery tank)

Engine crankcase

3

(with filter)

HST Type

Manual

Trans-

4

mission
case

5 Front axle case

6 Washer liquid tank –

Top link 1
Lift rod [RH] 1

7

Speed control pedal 1 [HST Type]
Battery terminals 2

* KUBOTA original transmission hydraulic fluid.

Transmission
Type [with Bi­Speed Turn]

Manual
Transmission
Type [without
Bi-Speed
Turn]

Place No. of greasing point Capacity

B1830
B2230
B2530
ROPS

7.1 U.S.gals

5.9 lmp.gals

4.5 L

4.7 U.S.qts

4.0 lmp.qts

3.2 U.S.qts

2.6 lmp.qts

4.5 U.S.gals

3.7 lmp.gals

16.5 L

4.4 U.S.gals

3.6 lmp.gals

4.0 U.S.gals

3.3 lmp.gals

3.9 U.S.qts

3.3 lmp.qts

B2230
B2530

CABIN

27 L

5.2 L

5.5 U.S.qts

4.6 lmp.qts

3.0 L

17 L

15 L

3.7 L

1.5 L

0.40 U.S.qts

0.33 lmp.qts

Greasing

B3030
ROPS

8.1 U.S.gals

6.8 lmp.gals

4.5 L

4.7 U.S.qts

4.0 lmp.qts

4.3 U.S.qts

3.6 lmp.qts

4.5 U.S.gals

3.7 lmp.gals

5.0 U.S.qts

4.1 lmp.qts

–

31 L

5.5 U.S.qts

4.6 lmp.qts

4.1 L

17 L

–

–

4.7 L

0.40 U.S.qts

0.33 lmp.qts

B3030

CABIN

5.2 L

1.5 L

G GENERAL

Lubricants, fuel and

coolant

No. 2-D diesel fuel
No. 1-D diesel fuel if
temperature is below

−10 °C (14 °F)
Fresh clean water with

anti-freeze
Engine oil : API Service

classification CD, CE or
CF
Below 0 °C (32 °F) :
SAE10W, 10W-30 or
10W-40
0 to 25 °C (32 to 77 °F):
SAE20, 10W-30 or
10W-40
Above 25 °C (77 °F):
SAE30, 10W-30 or
10W-40

KUBOTA UDT or
KUBOTA SUPER UDT
fluid*

KUBOTA UDT or
KUBOTA SUPER UDT
fluid or SAE80, SAE90
gear oil

Automobile washer liquid

Type of

grease

Multi-

Until grease
overflows.

Moderate
amount

purpose
type grease
NLGI-2 or
NLGI-1
(GC-LB)

G-7

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

5. TIGHTENING TORQUES

[1] GENERAL USE SCREWS, BOLTS AND NUTS

Screws, bolts and nuts whos e tightening torques are not spec ified i n this W orkshop Ma nual sho uld be tig htened

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

7.85

0.80

5.79

7.85

0.80

5.79

9.81

1.00

7.24

7.85

0.80

5.79

12.3

to

9.31

17.7
to

20.5

39.3
to

45.1

62.8
to

72.5

108

to

125
167

to

191
246

to

284
334

to

392

to

0.95

1.8
to

2.1

4.0
to

4.6

6.4
to

7.4

11.0
to

12.8

17.0
to

19.5

25.0
to

29.0

34.0
to

40.0

to

6.87

13.1
to

15.1

29.0
to

33.2

46.3
to

53.5

79.6
to

92.5

123

to

141
181

to

209
246

to

289

to

to

to

8.82

0.90

6.50

16.7

19.6

31.4

34.3

1.7

12.3

to

to

2.0

3.2

to

3.5

–––

–––

–––

–––

–––

to

14.4

23.2

to

to

25.3

to

11.2

23.6
to

27.4

48.1
to

55.8

77.5
to

90.2

124

to

147
197

to

225
275

to

318
368

to

431

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

to

8.31

17.4
to

20.2

35.5

to

41.2

57.2

to

66.5

91.2

to

108
145

to

166
203

to
235
272

to
318

to

to

to

8.82

0.90

6.50

17.7

20.5

39.3

44.1

62.8

72.5

1.8

13.1

to

to

2.1

4.0

to

4.5

6.4

to

7.4

–––

–––

–––

–––

to

15.1

29.0

to

to

32.5

46.3

to

to

53.5

to

14.2

29.5
to

34.3

60.9
to

70.6

103

to

117
167

to

196
260

to

304
344

to

402
491

to

568

1.25
to

1.45

3.0
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

21.7
to

25.3

44.9
to

52.0

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.)

Ordinariness Aluminum

N·m kgf·m lbf·ft N·m kgf·m lbf·ft

11.8
to

15.6

24.6
to

31.3

29.5
to

49.0

1.2
to

1.6

2.5
to

3.2

3.0
to

5.0

8.68

8.82

to

11.5

18.1

23.1

21.7

36.1

to

11.8

19.7

to

to

25.4

to

31.4 3.2 23.1

0.90
to

1.2

2.0
to

2.6

6.51
to

8.67

14.5
to

18.8

W10481390

G-8

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

6. MAINTENANCE CHECK LIST

G GENERAL

Period

No.

Item

Clogging of air conditioner

1

condenser screen

2 Engine oil Change ★✩✩✩✩✩✩

3 Engine oil filter Replace ★✩ ✩ ✩

4 Transmission oil filter Replace ★✩ ✩

5 Transmission fluid Change ★✩ ✩

6 Front axle case oil Change ✩✩

7 Front axle pivot Adjust ✩

8 Engine start system Check ✩✩✩✩✩✩✩✩✩✩✩✩✩

9 Greasing – ✩✩✩✩✩✩✩✩✩✩✩✩✩

10 Wheel bolt torque Check ✩✩✩✩✩✩✩✩✩✩✩✩✩

11 Battery condition Check ✩✩✩✩✩✩

Air cleaner element
[Double element type]
Primary element

12

Air cleaner element
[Double element type]
Secondary element

13 Fuel filter element

14 Fan belt Adjust ✩✩✩✩✩✩

15 Clutch Adjust ★✩✩✩✩✩✩

16 Brake Adjust ✩✩✩✩✩✩

17 Parking brake Adjust ✩✩✩✩✩✩

18 Radiator hose and clamp

19 Fuel line

20 Intake air line

Clean ✩ Daily G-12

Clean ✩✩✩✩✩✩

Replace

Replace

Check ✩✩✩✩✩✩

Replace ✩

Check ✩✩✩

Replace

Check ✩✩✩✩✩✩

Replace

Check ✩✩✩

Replace

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

Service Interval

Interval

every

100 Hr

every

200 Hr

every

300 Hr

every

300 Hr

every

300 Hr

every

400 Hr

every
50 Hr

every
50 Hr

every
50 Hr

every

100 Hr

every

100 Hr

every

1 year

every

1 year

every

100 Hr

every

400 Hr

every

100 Hr

every

100 Hr

every

100 Hr

every

100 Hr

every

200 Hr

every

2 years

every

100 Hr

every

2 years

every

200 Hr

every

2 years

Refer-

Impor-

tant

G-13,

G-13,

G-14,

G-15,

*4

*1

*2 G-35

@

@

@

*3 G-37

@

*3 G-37

W1035769

ence
page

G-19

G-26

G-30

G-29
G-30

G-31

G-17

G-18

G-18

G-20

G-22

G-35

G-23

G-31

G-23
G-16

G-19
G-24

G-24

G-26

G-37

G-25

G-27

G-9

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Period

No.

Item

21 Toe-in Adjust ✩✩✩

Tension of air conditioner

22

drive belt
Clogging of inner air filter

23

Clogging of fresh air filter

24

Clogging of air conditioner

25

condenser

26 Engine valve clearance Adjust

Air conditioner pipes and

27

hoses

28 CAB isolation cushion Check

Fuel injection nozzle

29

injection

30 Injection pump Check

31 Cooling system Flush

32 Coolant Change
33 Fuel system Bleed

Clutch housing water

34
35 Fuse Replace G-42
36 Light bulb Replace G-44
37 Washer liquid

Amount of refrigerant

38

(gas)

Adjust ✩✩✩

Clean ✩✩✩

Clean ✩✩✩

Check ✩✩✩

Check

Check

Drain G-41

Check
Check

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

Service Interval

Interval

every

200 Hr

every

200 Hr

every

200 Hr

every

200 Hr

every

200 Hr

every

800 Hr

every

1 year

every

1 year

every

1500 Hr

every

3000 Hr

every

2 years

every

2 years

Service

as

required

Impor-

tant

@G-34

@–

Refer-

ence
page

G-27

G-27

G-28

G-28

G-28

G-32

G-36

G-36

G-38

G-38
G-41

G-41
G-46

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

• *1 : Air cleaner should be cleaned more often in dusty conditions 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 indication 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 requi red maintenance on the en gine according t o
the above instruction.
Please see the Warranty Statement in detail.

• : Only CABIN model

W1052606

G-10

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

7. CHECK AND MAINTENANCE

CAUTION

• 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 kno w the condition of the tractor. Che ck the following items

before starting.

Checking

• Check areas where previous trouble was experienced.

• Walk around the tractor.

1. Check the tir e press ur e, and chec k for wear and dam age .

2. Check for oil and water leak.

3. Check the eng ine oil lev el.

4. Check the tra nsmi ss ion flui d level.

5. Check the co ola n t level .

6. Check the condition of seat belt and ROPS attaching hardware.

7. Check and clean the radiator screen and grill.

8. Check the sc rews and nuts of tires ar e tight .

9. Check the num ber plate .

10.Care of danger, warning and caution labels.

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

• While sitting on the operator's seat

1. Check the HST pedal, brake pedals.

2. Check the park ing brake.

3. Check the steering wheel.

• Turning the key switch

1. Check the performance of the easy checker lights.

2. Check the 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-11

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Cleaning Air Conditioner Condenser Screen (CABIN)

CAUTION

• Be sure to stop the engine before removing the screen.

1. Detach the air conditio ner condense r screen (1) and re move all
foreign materials.

IMPORTANT

• Grill and screen must be clean from debris to prevent engine
from overheating and to allow good air intake for air cleaner.

(1) Air Conditioner Condenser Screen

W1057600

G-12

B1830, B2230, B2530, B3030, WSM

■

IMPORTANT■

KiSC issued 03, 2007 A

[2] CHECK POINTS OF INITIAL 50 HOURS

Changing Engine Oil

CAUTION

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

1. Start and warm up the engine for approx. 5 minutes.

2. Place an oil pan underneath the engine.

3. To drain the used o il, remo ve the drain pl ug (1) at the b ottom o f
the engine and drain the oil completely.

4. Screw in the drain plug (1).

5. Fill new oil up to upper line on the dipstick (2).

IMPORTANT

• When using an oil of different manufacture or viscosity from
the previous one, remove all of the old oil.

• Never mix two different types of oil.

• Use the proper SAE Engine Oil according to ambient
temperatures.

• Refer to "LUBRICANTS, FUEL AND COOLANT". (See page
G-7.)

Engine oil capacity

B1830, B2230, B2530

B3030

G GENERAL

3.0 L

3.2 U.S.qts

2.6 lmp.qts

4.1 L

4.3 U.S.qts

3.6 lmp.qts

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

(A) Oil level is acceptable within this

range.

W1014065

Replacing Engine Oil Filter Cartridge

CAUTION

• 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 cartridge with the filter wrench.

2. Apply a slight coat of oil onto the rubber seal of new filter.

3. To install the new cartridge, screw it in by hand. Over tightening
may cause deformation of rubber gasket.

4. After the new cartridge has been replaced, the engine oil
normally decrease a li ttle . Thus see that the eng ine oil does not
leak through the s eal and be sure to read the oil l evel on the
dipstick. Then, replenish the engine oil up to the specified level.

• To prevent serious damage to the engine, replacement filter
must be highly efficient. Use only a KUBOTA genuine filter
or its equivalent.

(1) Engine Oil Filter Cartridge

W1014316

G-13

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Replacing Transmission Oil Filter Cartridg e

CAUTION

• Be sure to stop the engine before changing the oil filters.

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

1. Drain the transmi ssio n fluid.

2. Remove the both oil filter cartridges by using a filter wrench.

3. Apply a slight coat of oil onto the new cartridge gasket.

4. To install the new cartridge, screw it in by hand. Over tightening
may cause deformation of rubber gasket.

5. After the new cartridge has been replaced, the transmission fluid
level will normally decrease slightly. Make sure that the
transmission fluid does not leak through the seal. Check the fluid
level.

IMPORTANT

• To prevent serious damage to the hydraulic system. Use
only a genuine KUBOTA filter or its equivalents.

(1) Hydraulic Oil Filter Cartridge (for

HST)

(2) Hydraulic Oil Filter Cartridge

W1014458

G-14

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Changing Transmission Fluid

CAUTION

• Be sure to stop the engine when checking and changing the
transmission fluid.

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

1. Place an oil pan under the tractor.

2. Remove the drain plugs (3), (4) at the bottom of the transmission
case and the rear axles.

3. Drain the transmission fluid.

4. After draining, screw in the drain plug.

5. Fill new oil from filling port after removing the filling plug (2) up to
the upper notch on the dipstick (1).

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

IMPORTANT

• Use only multi-grade transmission oil. Use of other oils may
damage the transmission or hydraulic system.
Refer to "LUBRICANTS, FUEL AND COOLANT" (See page
G-7.)

• Never work the tractor immediately after changing the
transmission oil. Keeping the engine at medium speed for a
few minutes to prevents damage to the transmission.

• Do not mix different brands oil together.

Transmission fluid
capacity

B1830, B2230, B2530
Manual transmission
(without Bi-Speed
Turn)

B1830, B2230, B2530
Manual transmission
(with Bi-Speed Turn)

B1830HST,
B2230HST,
B2530HST

B3030HST

15 L

4.0 U.S.gals

3.3 Imp.gals

16.5 L

4.4 U.S.gals

3.6 Imp.gals
17 L

4.5 U.S.gals

3.7 Imp.gals
17 L

4.5 U.S.gals

3.7 Imp.gals

(1) Dipstick
(2) Filling Plug
(3) Drain Plug
(4) Drain Plug (Rear Axle Case)

G-15

(A) Oil level is acceptable within this

range.

W1014665

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

G GENERAL

Adjusting Clutch Pedal Free Travel

1. Stop the engine and remove the key.

2. Slight ly depres s the clutc h pedal and measu re free travel at the
top of pedal stroke.

3. If adjustment is needed, loosen the lock nut (2) and turn the
clutch rod (1) to adjust the rod length within acceptable limits.

4. Retighten the lock nut (2).

5. After adjusting, release the clutch pedal and check the clearance
(B). If adjustment is needed, adjust the clearance B with the bolt
(3).

• After adjustment, sure the stopper bolt with the lock nut (3).

Clutch pedal free travel

(A)

Factory spec.

20 to 30 mm

0.79 to 1.18 in.

(1) Clutch Pedal Rod
(2) Lock Nut
(3) Bolt

(A) Clutch pedal free travel
(B) Clearance (About 8.5 mm, 0.34 in.)

W10317160

G-16

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[3] CHECK POINTS OF EVERY 50 HOURS

Checking Engine Start System (HST Model)

CAUTION

• Do not allow anyone near the tractor while testing.

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

■ Preparation before testing.

1. Sit on the operator’s seat.

2. Set the parking brake and stop the engine.

3. Shift the range gear shift lever to "NEUTRAL" position.

4. Place the speed control pedal in "NEUTRAL" position.

5. Shift the PTO clutch lever to "OFF" position.

■ Test : Switch for the speed control pedal

1. Depress the speed control pedal.

2. Turn the key to "START" position.

3. The engine must not crank.

■ Test : Switch for the PTO clutch lever

1. Place the speed control pedal in "NEUTRAL" position.

2. Shift the PTO clutch lever to "ON" position.

3. Turn the key to "START" position.

4. The engine must not crank.

(1) Range Gear Shift Lever (L-M-H)
(2) PTO Clutch Lever

Checking Engine Start System (Manual Transmission Model)

G GENERAL

(3) Speed Control Pedal

W1014904

CAUTION

• Do not allow anyone near the tractor while testing.

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

■ Preparation before testing.

1. Sit on the operator’s seat.

2. Set the parking brake and stop the engine.

3. Place the shuttle shift lever in "NEUTRAL" position.

4. Shift the PTO ON-OFF lever to "OFF" position.

■ Test : Switch for the shuttle shift lever

1. Shift the shuttle shift lever to the forward or reverse position.

2. Fully depress the clutch pedal and turn the key to “START”
position.

3. The engine must not crank.

■ Test : Switch for the PTO ON-OFF lever

1. Engage the PTO ON-OFF lever to “ON” position.

2. Shift the shuttle shift lever to the "NEUTRAL" position.

3. Turn the key to "START" position.

4. The engine must not crank.

(1) Shuttle Shift Lever
(2) Clutch Pedal

(3) PTO ON-OFF Lever
(4) Range Gear Shift Lever (L-M-H)

W1032247

G-17

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Greasing

1. Apply a small amount of multipurpose grease to the positions as
shown in the figures.

(1) Speed Control Pedal (HST Pedal)
(2) Top Link

(3) Lifting Rod (RH)
(4) Battery Terminal

W1015242

Checking Wheel Mounting Bolts and Nuts Tightening Torques

CAUTION

• 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 wh eel bolts and nuts regularly especially whe n new. If
they are loose, tighten them as follows.

Front wheel mounting nut

Tightening torque

(1) Rear Wheel Mounting Bolt
(2) Rear Wheel Mounting Nut

Rear wheel mounting bolt

Rear wheel mounting nut

(3) Front Wheel Mounting Nut

77 to 90 N·m

7.9 to 9.2 kgf·m
57 to 67 lbf·ft

196 to 225 N·m
20 to 23 kgf·m
145 to 166 lbf·ft

167 to 191 N·m
17 to 19.5 kgf·m
123 to 141 lbf·ft

W1015311

G-18

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

[4] CHECK POINTS OF EVERY 100 HOURS

Changing Engine Oil

CAUTION

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

1. Start and warm up the engine for approx. 5 minutes.

2. Place an oil pan underneath the engine.

3. To drain the used o il, remo ve the drain pl ug (1) at the b ottom o f
the engine and drain the oil completely.

4. Screw in the drain plug (1).

5. Fill new oil up to upper line on the dipstick (2).

IMPORTANT

• When using an oil of different manufacture or viscosity from
the previous one, remove all of the old oil.

• Never mix two different types of oil.

• Use the proper SAE Engine Oil according to ambient
temperatures.

• Refer to "LUBRICANTS, FUEL AND COOLANT". (See page
G-7.)

Engine oil capacity

B1830, B2230, B2530

B3030

G GENERAL

3.0 L

3.2 U.S.qts

2.6 lmp.qts

4.1 L

4.3 U.S.qts

3.6 lmp.qts

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

(A) Oil level is acceptable within this

range.

W1032767

Adjusting Clutch Pedal Free Travel

1. Stop the engine and remove the key.

2. Slightly depr es s th e cl utch p edal and measure free trav el at the
top of pedal stroke.

3. If adjustment is needed, loosen the lock nut (2) and turn the
clutch rod (1) to adjust the rod length within acceptable limits.

4. Retighten the lock nut (2).

5. After adjusting, release the clutch pedal and check the clearance
(B). If adjustment is needed, adjust the clearance B with the bolt
(3).

Clutch pedal free travel

(A)

(1) Clutch Pedal Rod
(2) Lock Nut
(3) Bolt

Factory spec.

(A) Clutch pedal free travel
(B) Clearance (About 8.5 mm, 0.34 in.)

20 to 30 mm

0.79 to 1.18 in.

W10329950

G-19

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Checking Battery Condition

DANGER

• Do not use or charge the refillable type battery if the fluid

level is below the LOWER (lower limit level) mark.
Otherwise, the battery component parts may prematurely
deteriorate, which may s horten the battery's service life o r
cause an explosion. Check the fluid level regularly and add
distilled water as required so t hat the flui d level is between
the UPPER and LOWER levels.

CAUTION

• Never remove the vent plugs while the engine is running.

• 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.

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

NOTE

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

1. Mishandling the battery shortens the service life and adds to
maintenance costs.

2. The original battery is maintenance free type battery, needs
some servicing.
If the battery is weak, the engine is difficult to start and the lights
be dim. It is important to check the battery periodically.

(1) Vent Cap A : Upper Level

B : Lower Level

W1015551

G-20

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Checking Battery Condition (Continued)

CAUTION

• When the battery is being activated, hydrogen and oxygen
gases in the battery are extremely explosive. Keep open
sparks and flames away from the battery at all times,
especially when charging the battery.

• When charging the battery, ensure the vent caps are
securely in place. (If equipped.)

• 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

• Never check battery charge by placing a metal object across
the posts.
Use a voltmeter or hydrometer.
(For accessible maint ainable type batt eries with r emovable
vent caps.)

1. Make sure each electrolyte leve l i s to th e bo ttom of vent wells, if
necessary add distilled water in a well-ventilated area.

2. The water in the electrolyte evaporates during recharging. Liquid
shortage damages the battery. Exc essive liquid s pills over and
damages the tractor body.

3. To slow charge the battery, connect the battery positive terminal
to the charger positive terminal and the negative to the negative,
then recharge in the normal manner.

4. A boost charge is only for emergencies. It will partially charge the
battery at a high rate and in s short time.
When using a boost-charged battery, it is necessary to recharge
the battery as early as possible.
Failure to do this will shorten the battery's service life.

5. When the specific gravity of electrolyte is between 1.27 and 1.29,
the charging is completed.

6. When exchangi ng an old battery for a new one, use battery of
equal specification shown in TABLE 1.

Table 1

Battery

type

55B24L

(S)-MF

Volts (V)

12 36 79 433 4.5

Capacity

at 5H.R

Reserve

at (min)

Cold

cranking

amps

Normal

charging

rate (A)

■ Battery Storage

1. When storing the tr actor for a long period, remove the battery
from tractor, adjust the electrolyte to the proper level and store in
a dry place out of direct sunlight.

2. The battery self-discharges while it is stored.
Recharge it once every three months in hot seasons a nd once
every six months in cold seasons.

(1) Vent Cap A : Upper Level

B : Lower Level

W1019057

G-21

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Cleaning Air Cleaner Primary Element

1. Remove the air cleaner cover (3) and element (primary) (5) or (2).

2. Clean the element (primary) (2) :

- When dry dus t adheres to the element, blow compressed ai r
from the inside, turning the eleme nt. Pressure of co mpress ed

2

air must be under 205 kPa (2.1 kgf/cm

, 30 psi).

- When car bon or o il adhere s to the element, soak the element
in detergent for 15 minutes then wash it several times in water,
rinse with clean water and dry it naturally. After element is fully
dried, inspect inside of the element with a light and check if it is
damaged or not.

3. When replacing the air cleaner element (primary) (2), replace the
secondary element (4) 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 refi t the d ust cu p with t he arr o w ↑ (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.

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

■ Evacuator Valve

Open the evacuator valve (4) 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) Cover
(4) Evacuator Valve
(5) Element

[A] Double Element Type
[B] Single Element Type

W1017166

G-22

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Cleaning Fuel Filter Element

This job should not be done in the field, but in a clean place.

1. Place the oil pan underneath the fuel filter.
Loosen and remove the filter bowl, and rinse the inside with
kerosene.

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

3. After cleaning , reassemble the fuel filter, keepi ng out dust and
dirt.

4. Bleed the fuel system. (Refer to page G-41.)

• When the fuel filter bowl has been removed, fuel stops
flowing from the fuel tank. If the fuel tank is almost full,
however, the fuel will flow back from the fuel r eturn pipe to
the fuel filter. Before c hecking, make sure the fu el tank is
less than half-full.

• If dust, dirt or water enters the fuel system, the fuel pump
and injection nozzles are subject to premature wear. To
prevent this, be sure to clean the fuel filter bowl and element
periodically.

(1) Fuel Filter Bowl
(2) O-ring
(3) Fuel Filter Element
(4) O-ring

A : Loosen
B : Tighten

W1017546

Adjusting Fan Belt Tension

CAUTION

• Be sure to stop 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 i ncorrect, loosen the alter nator mounting bolts and
using a lever placed between the alternator and the engine block,
pull the alternator ou t until the deflection of the bel t falls within
acceptable limits.

4. Replace fan belt if it is damaged.

A deflection of between 7

Fan belt tension Factory spec.

(1) Adjusting Screw
(2) Fan Belt

A : Check the belt tension
B : To tighten

to 9 mm (0.28 to 0.34 in.)
when the belt is pressed
in the middle of the span.

W1017708

G-23

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Adjusting Brake Pedal Free Travel

CAUTION

• Stop the engine and chock the wheels before checking
brake pedal.

1. Release the parking brake.

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

3. If adjustment is needed, loosen the lock nut and turn the
turnbuckle to adjust the rod length within acceptable limits.

4. Retighten the lock nut.

30 to 40 mm on the pedal

Proper brake pedal free travel

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

(1) Brake Pedal (LH)
(2) Brake Pedal (RH)
(3) Turnbuckle
(4) Lock Nut

L : Free Travel

W1055914

Checking Parking Brake Lever Travel

1. Pull the parking brake lever (1) to the parking position while
counting the ratchet sound made by the parking brake lever (1).

2. If the counted ratchet sound is not within the factory specification,
adjust the parking brake lever travel.

CAUTION

• Stop the engine and remove the key, and the chock wheels
before checking parking brake.

Parking brake lever
travel

Factory spec. 4 to 5 notches

(When adjusting)

1. Release the parking brake lever.

2. Be sure to adjust the free travel of the right and left brake pedals.

3. Place the jack under the transmission case, then remove the rear
tires and set the rigid rack under the rear axles.

4. Loosen the lock nuts (2) of the right and left rods (6).

5. Tighten the adj us ting nut (3 ) of the rig ht rod (6) by han d unti l the
collar (4) comes into contact with the arm (5). Make half and one
more turn of the nut.

6. Tighten the adjusting n ut (3) of the l eft rod (6) by hand until the
collar (4) comes into contact with the arm (5).

7. Tighten up the lock nuts (2) of right and left rods.

8. Make sure the parking brake lever gets locked at the its 4th or 5th
notch.

9. Install the right and left tires.

NOTE

• After adjusting the parking brake lever free travel :

- Right and left parking brake for even braking.

- With the parking bra ke released, make sure that the righ t

and left tires do not drag on.

(1) Parking Brake Lever
(2) Lock Nut
(3) Adjusting Nut

(4) Collar
(5) Parking Brake Arm
(6) Parking Brake Rod

W10258110

G-24

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

G GENERAL

Checking Fuel Line

1. Check to see th at all lines and hose clamps are ti ght 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. (See "Bleeding Fuel System" in as required
maintenance.)

(1) Fuel Line (2) Clamp Band

W1062890

G-25

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

[5] CHECK POINTS OF EVERY 200 HOURS

Replacing Engine Oil Filter Cartridge

CAUTION

• 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 cartridge with the filter wrench.

2. Apply a slight coat of oil onto the rubber seal of new filter.

3. To install the new cartridge, screw it in by hand an additional 1/2
turn only. Over tightening may cause deformation of rubber
gasket.

4. After the new cartridge has been replaced, the engine oil
normally decrease a little. Thus see that the engine oil does not
leak through the seal and be sure to read the oil level on the
dipstick. Then, replenish the engine oil up to the specified level.

IMPORTANT

• To prevent serious damage to the engine, replacement filter
must be highly efficient. Use o nly a KUBOTA genuine f ilter
or its equivalent.

(1) Engine Oil Filter Cartridge

Checking Radiator Hoses and Clamp

Check to see if radiator hoses (1) are p roperly fixed every 2 00

hours of operation or six months, whichever comes first.

1. If clamp bands (2) are loose or water leaks, tighten clamp bands
(2) securely.

2. Replace radiator hoses (1) and tighten clamp bands (2) securely,
if radiator hoses (1) are swollen, hardened or cracked.
Replace radiator hoses (1) and clamp bands (2) every 2 years or

earlier if checked and found that radiator hoses (1) are swollen,
hardened or cracked.

■ Precaution at Overheating

Take the following actio n in the even t the co ola nt temperature is

nearly or more than the boiling point, what is called "Overheating".

1. Park the tractor in a safe place and kee p the engine unloaded
idling.

2. Do not stop the engine suddenly, but stop it after about 5 minutes
of unloaded idling.

3. Keep yoursel f w e ll a way from the m ach in e f or f ur t he r 10 m in u tes
or while the steam blows out.

4. Check th at there are no dangers su ch as burns. 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 Band

G GENERAL

W1033527

W1018562

G-26

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Checking Intake Air Line

1. Check to see that hoses (1) and hose clamps (2) are tight and not
damaged.

2. If hoses (1) and hose clamps (2) are found worn or damaged ,
replace or repair them at once.

(1) Hose (2) Hose Clamp

W1018915

Adjusting Toe-in

1. Park tractor on a flat place.

2. Turn steering wheel so 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 0 to 10 mm (0 to 0.39 in.) less than rear
distance. If not, adjust tie-rod length.

Toe-in (B) – (A) Factory spec.

0 to 10 mm
0 to 0.39 in.

■ Adjusting procedure

1. Loosen the tie-rod nut (2).

2. Turn the tie-rod joint to adjust the rod length until the proper toe­in measur ement is obtained.

3. Retighten the tie-rod nut (2).

(1) Tie-rod Joint
(2) Tie-rod Nut

(A) Wheel to Wheel Distance at Front
(B) Wheel to Wheel Distance at Rear
(C) Front

W1019009

Adjusting Air Conditioner Belt Tension (CABIN)

CAUTION

• Apply the parking brake and stop the engine and remove the
key.

1. Measure the deflection A, depressing the air conditioner belt
halfway between the fa n b elt dr ive pul le y and the air condit ion er
tension pulley at specified force (98 N, 10 kgf, 22 lbf).

2. If the measurement is not within the factory specifications, loosen
the nut (2) and adjust the adjusting bolt (1).

Deflection A Factory spec.

(1) Adjusting Bolt
(2) Nut
(3) Air Conditioner Belt

A : Deflection

10 to 12 mm

0.40 to 0.48 in.

W1063888

G-27

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

NOTE■

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Cleaning the Inner Air Filter (CABIN)

1. Remove the screws (2).

2. Remove the inner filter (1), and blow air from the opposite
direction to the filter's normal air flow.

3. pressure of compressed air must be under 205 kPa (2.1 kgf/cm

(1) Inner Air Filter (1) Screw

2

W1064732

Cleaning the Fresh Air Filter (CABIN)

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

2. Blow air from the opposite direction to the filter's normal air flow.

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

• 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 use gasolin e, 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.

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

A : Air Inlet Port
B : Air Conditioner Airflow

W1065118

Checking the Air Conditioner Condenser (CABIN)

1. Check a ir cond itione r con dense r (1) to be sur e that i t is clea n of
debris.

(1) Air Conditioner Condenser

W1065380

G-28

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

[6] CHECK POINTS OF EVERY 300 HOURS

Changing Transmission Fluid

CAUTION

• Be sure to stop the engine when checking and changing the
transmission fluid.

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

1. Place an oil pan under the tractor.

2. Remove the drain plugs (3), (4) at the bottom of the transmission
case and the rear axles.

3. Drain the transmission fluid.

4. After draining, screw in the drain plug.

5. Fill new oil from filling port after removing the filling plug (2) up to
the upper notch on the dipstick (1).

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

• Use only multi-grade transmission oil. Use of other oils may
damage the transmission or hydraulic system.
Refer to "LUBRICANTS, FUEL AND COOLANT" (See page
G-7.)

• Never work the tractor immediately after changing the
transmission oil. Keeping the engine at medium speed for a
few minutes to prevents damage to the transmission.

• Do not mix different brands oil together.

Transmission fluid
capacity

B1830, B2230, B2530
Manual transmission
(without Bi-Speed
Turn)

B1830, B2230, B2530
Manual transmission
(with Bi-Speed Turn)

B1830HST,
B2230HST,
B2530HST

B3030HST

G GENERAL

15 L

4.0 U.S.gals

3.3 Imp.gals

16.5 L

4.4 U.S.gals

3.6 Imp.gals
17 L

4.5 U.S.gals

3.7 Imp.gals
17 L

4.5 U.S.gals

3.7 Imp.gals

(1) Dipstick
(2) Filling Plug
(3) Drain Plug
(4) Drain Plug (Rear Axle Case)

G-29

(A) Oil level is acceptable within this

range.

W1033996

B1830, B2230, B2530, B3030, WSM

■

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Replacing Transmission Oil Filter Cartridg e

CAUTION

• Be sure to stop the engine before changing the oil filters.

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

1. Drain the transmi ssio n fluid.

2. Remove the both oil filter cartridges by using a filter wrench.

3. Apply a slight coat of oil onto the new cartridge gasket.

4. To install the new cartridge, screw it in by hand. Over tightening
may cause deformation of rubber gasket.

5. After the new cartridge has been replaced, the transmission fluid
level will normally decrease slightly. Make sure that the
transmission fluid does not leak through the seal. Check the fluid
level.

IMPORTANT

• To prevent serious damage to the hydraulic system. Use
only a genuine KUBOTA filter or its equivalents.

(1) Hydraulic Oil Filter Cartridge (for

HST)

(2) Hydraulic Oil Filter Cartridge

W1065875

Changi ng Front Axle C a se Oil

1. Park the tractor on a firm, flat and level surface.

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

3. After draining, reinstall the drain plugs.

4. Fill with new oil up to the upper notch on the dipstick.
Refer to "LUBRICANTS, FUEL AND COOLANT". (See pa ge
G-7.)

• After ten minutes, check the oil level again; add oil to
prescribed level.

5. After filli ng, re insta ll the fil li ng plu g.

6. Properly disp ose of used oil.

3.7 L

Front axle case oil
capacity

(1) Filling Plug with Dipstick
(2) Drain Plug

B1830, 2230, B2530

B3030

(A) Oil level is acceptable within this

range.

3.9 U.S.qts

3.8 Imp.qts

4.7 L

5.0 U.S.qts

4.1 Imp.qts

W1019508

G-30

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

[7] CHECK POINTS OF EVERY 400 HOURS

Adjusting Front Axle Pivot (Front Axle Locking Force)

1. Jack up the front side of tractor.

2. Set a spring balance to the front axle flange.

3. Measure the front axle locking force.

4. If the measurement is not within the factory specifications, adjust
with the adjusting screw (2). After applying liqu id gasket Three
Bond 1206D or equi valent to the thread portion of the adjust ing
screw (2) to prevent front axle oil from leaking out of the front axle
holder (3).

5. Tighten the lock nut (2) firmly.

Front axle locking force Factory spec.

G GENERAL

50.0 to 100.0 N

5.1 to 10.2 kgf

12.8 to 22.4 lbf

(1) Lock Nut
(2) Adjusting Screw
(3) Holder
(4) Thrust Collar
(5) Front Axle Case

A : Thread Portion

W1062574

Replacing Fuel Filter Element

This job should not be done in the field, but in a clean place.

1. Place the oil pan underneath the fuel filter.
Loosen and remove the filter bowl, and rinse the inside with
kerosene.

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

3. After cleaning , reassemble the fuel filter, keepi ng out dust and
dirt.

4. Bleed the fuel system. (Refer to page G-40.).

• To prevent seriou s damage to the fuel system, use only a
KUBOTA genuine fuel filter element.

• When the fuel filter bowl has been removed, fuel stops
flowing from the fuel tank. If the fuel tank is almost full,
however, the fuel will flow back from the fuel r eturn pipe to
the fuel filter. Before c hecking, make sure the fu el tank is
less than half-full.

• If dust, dirt or water enters the fuel system, the fuel pump
and injection nozzles are subject to premature wear. To
prevent this, be sure to clean the fuel filter bowl and element
periodically.

(1) Fuel Filter Bowl
(2) O-ring
(3) Fuel Filter Element
(4) O-ring

A : Loosen
B : Tighten

W1066709

G-31

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

NOTE■

KiSC issued 03, 2007 A

[8] CHECK POINT OF EVERY 800 HOURS

Valve Clearance 1 (ROPS Model)

• Valve clearance must be checked and adjusted when engine
is cold.

1. Remove the head cover, the glow plugs and t he timing window
cover on the clutch housing.

2. Align the "1TC" mark line on the flywheel and center of timing
window so that th e No. 1 piston com es to the compressi on top
dead center.

3. Check the following valve clearance marked with “✩” using a
feeler gauge.

4. If the clearance is not within the factory specifications, adjust with
the adjusting screw.

Valve clearance Factory spec.

• The "TC" marking line on the flywheel is just for No. 1
cylinder. There is no "TC" marking for the other cylinders.

• No. 1 piston comes to the T.D.C. position when the "TC"
marking line is aligned with center of timing window on front
case. Turn the flywheel 0.26 rad (15 °) clockwise and
counterclockwise to see if the piston is at the comp ression
top dead center or the overlap position. Now referring to the
table below, readj ust the valve clearance. (Th e piston is a t
the compression top dead ce nte r whe n both th e IN. and EX.
valves do not move; it is at the overlap position when both
the valves move.)

• Finally turn the flywh eel 6.28 rad (360 °) and align the "TC"
marking line and the center of timing window. Adjust all the
other valve clearance as required

• After turning the flywheel counterclockwise twice or three
times, recheck th e valve clearance, firmly tighten t he lock
nut of the adjusting screw.

Number of cylinders
Valve arrangement

G GENERAL

0.145 to 0.185 mm

0.0057 to 0.0073 in.

3-cylinder 4-cylinder

Adjustable cylinder
location of piston

When No. 1
piston comes to
compression top
dead center

When No. 1
piston comes to
overlap position

✩ : Valve clearance is adjustable.

(1) Timing Window
(2) TC Mark Line

No. 1 ✩✩✩✩
No. 2 ✩✩
No. 3 ✩✩
No. 4
No. 1
No. 2 ✩✩
No. 3 ✩✩
No. 4 ✩✩

G-32

IN. EX. IN. EX.

A : Valve Clearance

W10507730

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Valve Clearance 2 (CABIN Model)

• Valve clearance must be checked and adjusted when engine
is cold.

1. Remove the head cover and the glow plugs.

2. Check and adjust the valve clearance at the both valves
compression top dead center.

3. If the clearance is not within the factory specifications, adjust with
the adjusting screw.

• Firing order
3-cylinder : 1 → 2 → 3
4-cylinder : 1 → 3 → 4 → 2

• Check and adjust the valve clearance follow ing the firing order
shown above.

Valve clearance Factory spec.

0.145 to 0.185 mm

0.0057 to 0.0073 in.

(1) Adjusting Screw
(2) Lock Nut

A : Valve Clearance

W10589350

G-33

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[9] CHECK POINT OF EVERY 1500 HOURS

Fuel Injection Pressure

1. Set the injection nozzle to a nozzle tester.

2. Slowly move the tester handle to measure the pressure at which
fuel begins jetting out from the nozzle.

3. If the measurement is not within the factory specifications,
replace the adjusting washer (1) in the nozzle holder to adjust it.

Fuel injection pressure Factory spec.

(Reference)

• Pressure variation with 0.01 mm (0.0004 in.) difference of
adjusting washer thickness
Approx. 235 kPa (2.4 kgf/cm

• Pressure with 0.01 mm (0.0004 in.) difference of adjusting
washer thickness varies approx. 235 KPa (2.4 kgf/cm

(1) Adjusting Washer

2

, 34 psi)

G GENERAL

13.7 to 14.7 MPa
140 to 150 kgf/cm
1991 to 2134 psi

2

2

, 34 psi)

W10182100

G-34

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

[10] CHECK POINT OF EVERY 1 YEAR

Replacing Air Cleaner Element

1. Remove the air cleaner cover (3) and element (5) (or primary (2)).

2. When replacing the air cleaner element (5) (or primary (2)),
replace the secondary element (4) as well :
Once a year or after every six times of cleaning, whichever
comes first.

• To prevent serious damage to the air intake system, use only
a KUBOTA genuine air element.

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

• Do not run the engine with filter element removed.

• Be sure to refit the du st cu p w ith th e ar row ↑ (on the rear of
cup) upright. If the dust cup i s improp erly fit ted, evacu ator
valve will not function and dust will adhere to the element.

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

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

■ Evacuator Valves

Open the evacuator valve (2) once a week under ordinary

conditions or daily when use d in a dusty place to get rid of large
particles of dust and dirt.

(1) Secondary (Safety) Element
(2) Primary Element
(3) Cover
(4) Evacuator Valve
(5) Element

G GENERAL

[A] Double Element Type
[B] Single Element Type

W10720460

G-35

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Checking the Air Conditioner Pipe and Hose (CABIN)

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

2. If pipes, hoses and clamps are found worn and damaged, replace
them.

(1) Pipe
(2) Hose

(3) Clamp

W10724920

Checking the CAB Isolation Cushion (CABIN)

1. Check the cushion (1) for any breakage or fatigue. Replace them
if they have deteriorated.

(1) Cushion

W10730940

G-36

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

[11] CHECK POINTS OF EVERY 2 YEARS

Replacing Radiator Hose and Clamp Band

1. Replace the r adiator hos es (1) and tighten th e clamp band s (2)
securely if the radiator hoses (1) are swollen, hardened or
cracked.

(1) Radiator Hose (2) Clamp Band

Replacing Fuel Line

1. If fuel line ( 1) and clamp bands (2) are found worn or d amaged ,
replace them at once.

• If the fuel line is replaced, be sure to properly bleed the fuel
system. Refer to page G-40.

(1) Fuel Line (2) Clamp Band

G GENERAL

W10739500

W10744930

Replacing Intake Air Line

1. If hoses (1) and hose clamps (2) are found worn or damaged ,
replace them at once.

(1) Hose (2) Hose Clamp

W10748030

G-37

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Flushing Cooling System and Changing Coolant

CAUTION

• Do not remove radiator cap while coolant is hot. When cool,
slowly rotate cap to the first stop and allow sufficient time
for excess pressure to escape before removing the cap
completely.

1. Stop the engine, remove the key and let it cool down.

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

3. After all coolant is drained, close the drain cock (2).

4. Fill with clean water and cooling system cleaner.

5. Follow directions of the cleaner instruction.

6. After flushing, fill with clean water and anti-freeze until the coolant
level is just below the radiator cap.
Install the radiator cap securely.

7. Fill with coolant up to the "FULL" mark of recovery tank.

8. Start and operate the engine for few minutes.

9. Stop the engine, remove the key and let cool.

10.Check coolant level of recovery tank and add coolant if
necessary.

11.Properly dispose of used coolant.

IMPORTANT

• Do not start engine without coolant.

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

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

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

Coolant capacity
(with recovery tank)

B1830
B2230
B2530

B2230
B2530

B3030 ROPS

B3030 CABIN

ROPS

CABIN

4.5 L

4.7 U.S.qts

4.0 Imp.qts

5.2 L

5.5 U.S.qts

4.6 Imp.qts

4.5 L

4.7 U.S.qts

4.0 Imp.qts

5.2 L

5.5 U.S.qts

4.6 Imp.qts

(1) Radiator Cap
(2) Drain Cock
(3) Recovery Tank

G-38

A : FULL
B : LOW

W1021307

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Flushing Cooling system and Changing Coolant (Continued)

■ Anti-Freeze

CAUTION

• When using antifreeze, put on some protection such as
rubber gloves (Anti-freeze contains position).

• If should drink anti-freeze, throw up at once and take
medical attention.

• When anti-freeze comes in contact with the s kin or cl othing,
wash it off immediately.

• Do not mix different types od Anti-freeze.
The mixture can produce chemical reaction c ausing harmful
substances.

• Anti-freeze 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 water onto the grounds, down a drain, or into
any water source.

• Also, observe the relevant environmental protection
regulations when disposing of anti-freeze.

If it freezes, coolant ca n damage the cylin ders and radiator. I f

the ambient temperatur e falls below 0 °C (32 °F) or before a long­term storage, let out cooling wate r completely, or mix fresh water
with long-life coolant and fil l the radiator and reserve tan k with the
mixture.

1. Long-life coo lant (hereafter LLC) comes i n several types. Use
ethylene glycol (EG) type for this engine.

2. Before employ ing LLC-mixed cooling wate r, fill the radiato r with
fresh water and empty it again.

3. Mixing the LLC
Put the LLC in coolin g water in the percentage (%) for a target
temperature. Wh en mixing, stir it up well, and then fill i nto the
radiator.

4. The procedure for the mixing water and anti-freeze differs
according to the make of the anti-freeze and the ambient
temperature. Refer t o SAE J1034 standard, mo re specifically
also to SAE J814c.

W1022492

G-39

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

NOTE■

KiSC issued 03, 2007 A

G GENERAL

Flushing Cooling system and Changing Coolant (Continued)

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

Vol % Anti-freeze

40 −24 −12 106 222
50 −37 −34 108 226

* At 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

Freezing Point Boiling Point*

°C °F °C °F

1. Adding the LLC.

- Add only water if the mixture reduces in amount by

evaporation.

- 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 manufacturer.

(Different bands may have different additive c omponents, and the
engine may fail to perform as specified.)

2. When the LLC is mixed, do not employ any radiator cleaning
agent. The LLC contain s antico rrosive agen t. If mixed with the
cleaning agent, sludge may build up, adversely affecting the
engine parts.

3. Kubota's gen uine long-life coolant has a service life of 2 year s.
Be sure to change the coolant every 2 years.

• The above data represent industry standards that
necessitate a minimum g lycol content in the concentrated
anti-freeze.

• When the coolant level drops due to evaporation, add water
only to keep the a nti-freeze mix ing ratio les s than 50 % . In
case of leakage, add anti- freeze and water in the specified
mixing ratio before filling in to the radiator.

W1032576

G-40

B1830, B2230, B2530, B3030, WSM

NOTE■

NOTE■

KiSC issued 03, 2007 A

[12] OTHERS

G GENERAL

Bleedin g Fu el

Air must be removed:

1. When the fuel filter or lines are removed.

2. When tank is completely empty.

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

■ Bleeding procedure:

1. Fill the fuel tank with fuel.

2. Start the engine and run for about 30 seconds, and then stop the
engine.

• If the fuel line is removed, be sure to properly bleed the fuel
system.

(1) Fuel Pump
(2) Clamp Band

(3) Fuel Filter

W1021149

Draining Clutch Housing Water

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

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

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

(1) Water Drain Plug

W1075871

Lubricating Hinges (CABIN)

1. Lubricate the door hinges (1) and the rear window hinges (2) with
a proper amount of grease.

(1) Door Hinge (2) Rear Window Hinge

W1076146

Adding the Washer Liquid (CABIN)

1. Add a proper amount of automobile washer liquid.

Washer liquid tank Capacity

(1) Washer Liquid Tank

1.5 L

0.40 U.S.qts

0.33 Imp.qts

G-41

W1076428

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Replacing Fuse (R O PS)

1. The tractor electri cal syst em is pro tected from potenti al dama ge
by fuses.
A blown fuse indicates that there is an overload or short
somewhere in the electrical system.

2. If any of the fuses should blow, replace with a new one of the
same capacity.

• Before replacing a blown fuse, determine why the fuse blew
and make any necessary repairs. Failure to follow this
procedure may result in serious damage to the tractor
electrical system. Refer to troubleshooting section of this
manual.
If any of them should blow, replace with a new one of the
same capacity.

■ Protected Circuit

Fuse No. Capaci ty (A) Protected circuit

(1) 25 Head light, Horn, Instrument Cluster
(2) 10 Key stop
(3) 15 Auxiliary (Reserve)
(4) 20 Flasher / Brake
(5) 10 Beacon
(6) 15 Hazard

(7)

50

Slow blow fuse

Check circuit against wrong battery
connection

(1) Fuse (for Head Light, Horn)
(2) Fuse (for Key Stop)
(3) Fuse (for Reserve)
(4) Fuse (for Flasher / Brake)

(5) Fuse (for Beacon)
(6) Fuse (for Hazard)
(7) Slow Blow Fuse

W1023430

G-42

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Replacing Fuse (CABIN)

1. The tractor elec trical system is pr otected fr om poten tial dam age
by fuses.
A blown fuse indicates that there is an overload or short
somewhere in the electrical system.

2. If any of the fuses shoul d blow, replace with a new one of the
same capacity.

• Before replacing a blown fuse, determine why the fuse blew
and make any necessary repairs. Failure to follow this
procedure may result in serious damage to the tractor
electrical system. Refer to troubleshooting section of this
manual.
If any of them should blow, replace with a new one of the
same capacity.

■ Protected Circuit

Fuse No. Capacity (A) Protected circuit

(1) 10 Key Stop
(2) 25 Head Light, Horn, Instrument Cluster
(3) 10 Air Compression
(4) 15 Wiper
(5) 25 Work light / Beacon
(6) 25 Aircon Blower
(7) 15 Hazard
(8) – Vacant
(9) 20 Flasher / Brake

(10) 20 Auxiliary (Reserve)
(11)

60

Slow blow fuse

Check circuit against wrong battery
connection

(1) Fuse (for Key Stop)
(2) Fuse (for Head Light, Horn

Instrument Cluster)
(3) Fuse (for Air Compression)
(4) Fuse (for Wiper)
(5) Fuse (for Work light / Beacon)
(6) Fuse (for Aircon Blower

(7) Fuse (for Hazard)
(8) Vacant

(9) Fuse (for Flasher / Brake)
(10) Fuse (for Auxiliary)
(11) Slow Blow Fuse

W1076635

G-43

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Replacing Light Bulb (ROPS)

1. Head Light:
Take the bulb out of the light body and replace with new one.

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

Light Capacity
Head lights 40 W / 45 W
Tail light 10 W
Turn signal / Hazard light 21 W
Instrument panel light 1.7W
Hazard light switch indicator 0.6 W
Brake stop light 21 W
Front position light 5 W
Number plate light 10 W

(1) Head Light Bulb
(2) Tail Light Bulb
(3) Turn Signal Bulb

(4) Hazard Light Bulb
(5) Instrument Panel Lamp
(6) Hazard Switch Indicator Lamp

W1023802

G-44

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Replacing Light Bulb (CABIN)

1. Head lights:
Take the bulb out of the light body and replace with new one.

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

Light Capacity
Head lights 40 W / 45 W
Tail light 10 W
Turn signal / Hazard light 21 W
Instrument panel light 1.7W
Hazard light switch indicator 0.6 W
Work light 35 W
Brake stop light 21 W
Front position light 5 W
Number plate light 10 W

(1) Head Light Bulb
(2) Tail Light Bulb
(3) Turn Signal Bulb
(4) Hazard Light Bulb

(5) Instrument Panel Lamp
(6) Hazard Switch Indicator Lamp
(7) Work Light Bulb

W1078876

G-45

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Checking Refrigerant (Gas) (CABIN)

CAUTION

• Liquid contact with eyes or skin may cause frostbite.

• In the event of a leakage, wear safety goggles. Escaping
refrigerant can cause severe injuries to eyes.

• In contact with a flame, R134a refrigerant gives a toxic gas.

• Do not disconnect any part of the refrigeration circuit of the
air conditioning system.

■ Checking procedure

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

-1

- Engine speed : About 1500 min

(rpm)

- Temperature control lever: Maximum cooling

position (leftmost)

- Fan switch: Highest blow (HI)

- Air-conditioner switch: ON

2. Look into t he sight glass (1) to see if the refriger ant is flowing
through its circuit.

IMPORTANT

• Charge only with R134a not R12 refrigerant (gas).

(Reference)

• (A) Proper : Little or no air bubbles in the refrigerant flow.

• (B) Low : Lots of air bubbles in the refr igerant 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

W1077954

G-46

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

8. SPECIAL TOOLS

[1] SPECIAL TOOLS FOR ENGIN E

Special Use Puller Set

Code No.: 07916-09032
Application: Use exclusively for pulling out bearing, gears and other

Piston Ring Compressor

Code No.: 07909-32111
Application: Use exclusively for pushing in the piston with piston

G GENERAL

parts with ease.

W1024050

rings into the cylinder.

W1024100

Piston Ring Tool

Code No.: 07909-32121
Application: Use exclusively for removing or installing the piston ring

with ease.

W1024150

Diesel Engine Compression Tester (for Glow Plug)

Code No.: 07909-39081 (Assembly) 07909-31301 (L)

07909-31291 (K) 07909-31311 (M)

Application: Use to measure diesel engine compression and

diagnostics of need for major overhaul.

(1) Gauge
(2) L Joint
(3) Adaptor K

(4) Adaptor L
(5) Adaptor M

0000001398E

Oil Pressure Tester

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

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

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

W1024318

G-47

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Valve Seat Cutter

Code No.: 07909- 33 102
Application: Use to reseat valves.
Angle: 0.785 rad (45°)

0.262 rad (15°)

Diameter: 28.6 mm (1.126 in.) 38.0 mm (1.496 in.)

31.6 mm (1.244 in.) 41.3 mm (1.626 in.)

35.0 mm (1.378 in.) 50.8 mm (2.000 in.)

W1024458

Radiator Tester

Code No.: 07909- 31 551
Application: Use to check of radiator cap pressure, and leaks

from cooling system.

Remarks: Adaptor (1) BANZAI Code No. RCT-2A-30S

W1024532

Connecting Rod Alignment Tool

Code No.: 07909- 31 661
Application: Use to check the connecting rod alignment.
Applicable: Connecting rod big end I.D.
range 30 to 75 mm (1.18 to 2.95 in.) dia.

Connecting rod length
65 to 300 mm (2.56 to 11.81 in.)

W1024583

Nozzle Tester

Code No.: 07909- 31 361
Application: Use to check the fuel injection pressure and spray

pattern of nozzle.

Measuring: 0 to 50 MPa

2

range (0 to 500 kgf/cm

, 0 to 7000 psi)

W1024653

Plastigage

Code No.: 07909- 30 241
Application: Use to check the oil clearance between crankshaft and

bearing, etc..
Measuring: Green 0.025 to 0.076 mm (0.001 to 0.003 in.)
range Red 0.051 to 0.152 mm (0.002 to 0.006 in.)

Blue0.102 to 0.229 mm (0.004 to 0.009 in.)

W1024719

G-48

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Red Check

Code No.: 07909-31371
Application: Use to check cracks on cylinder head, cylinder block,

etc..

W1024909

G-49

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

• The following special tools are not provided, so make them referring to the figure.
Valve Guide Replacing Tool

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

A 225 mm (8.86 in.)
B 7 0 mm (2 .8 in.)
C 4 5 mm (1 .8 in.)
D 20 mm dia. (0.79 in. dia.)
E 11.7 to 11.9 mm dia. (0.461 to 0.469 in. dia.)
F 6.50 to 6.60 mm dia. (0.256 to 0.260 in. dia.)
G 25 mm (0.98 in.)
H 6.70 to 7.00 mm dia. (0.264 to 0.276 in. dia.)

I 5 mm (0.2 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 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.)

Injection Pump Pressure Tester

Application: Use to check fuel tightness of injection pumps.

Pressure gauge full scale : More than 29.4 MPa

A

(300 kgf/cm

B Copper gasket
C Flange (Material : Steel)
D Hex. nut 27 mm (1.1 in.) across the plat
E Injection pipe
F PF 1/2
G 5 mm (0 .2 i n .)
H 17 mm dia. (0.67 in. dia.)

I 8 mm dia. (0.3 in. dia.)

J 1.0 mm (0.039 in.)
K 17 mm dia. (0.67 in. dia.)
L 6.10 to 6.20 mm dia. (0.241 to 0.244 in. dia.)
M 8 mm (0.3 i n .)
N 4 mm (0 .2 in.)
O 11.97 to 11.99 mm dia. (0.4713 to 0.4720 in. dia.)
P PF 1/2
Q 23 mm (0.91 in.)
R 17 mm (0.67 in.)
S 4 mm (0.2 in.)
T 12.00 to 12.02 mm dia. (0.4725 to 0.4732 in. dia.)
U 100 mm (3.94 in.)
V M12 × 1.5

a Adhesive application
b Fillet welding on the enter circumference

2

, 4267 psi)

G GENERAL

W10250170

W10252400

G-50

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Flywheel Stopper

Application: Use to loosen and tighten the flywheel screw.

A 20 mm (0.79 in.)
B 15 mm (0.59 in.)
C 10 mm dia. (0.39 in. dia.)
D 30 mm (1.2 in.)
E 8 mm (0.3 in.)
F 200 mm (7.87 in.)

W10259480

Crankshaft Bearing 1 Replacing Tool

Application: Use to press out and press fit the crankshaft bearing 1.

1. Extracting tool

A 135 mm (5.31 in.)
B 72 mm (2.8 in.)
C 40 mm radius (1.6 in. radius)
D 10 mm (0.39 in.)
E 20 mm (0.79 in.)
F 20 mm dia. (0.79 in. dia.)
G 56.80 to 56.90 mm dia. (2.237 to 2.240 in. dia.)
H 51.80 to 51.90 mm dia. (2.040 to 2.043 in. dia.)

2. Inserting tool

A 130 mm (5.12 in.)
B 72 mm (2.8 in.)
C 40 mm radius (1.6 in. radius)
D 9 mm (0.4 in.)
E 4 mm (0.2 in.)
F 20 mm (0.79 in.)
G 20 mm dia. (0.79 in. dia.)
H 68 mm dia. (2.7 in. dia.)

I 51.80 to 51.90 mm dia. (2.040 to 2.043 in. dia.)

J 56.80 to 56.90 mm dia. (2.237 to 2.240 in. dia.)

W1026139

G-51

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

Socket

Application: Use to loosen and tighten the i dle gear 2 beari ng lock

nut.

A 28.5 to 28.8 mm (1.12 to 1.13 in.)
B 3.5 to 3.7 mm (0.14 to 0.15 in.)
C 28.5 to 28.8 mm (0.12 to 1.13 in.)
D 38 mm dia. (1.50 in. dia.)
E 28.5 to 29.0 mm dia. (1.12 to 1.14 in. dia.)
F 47.5 mm (1.87 in.)
G 17.5 mm (0.69 in.)
H 30 mm (1.18 in.)

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

J 24.5 mm dia. (0.96 in. dia.)
K 5.0 mm (0.21 in.)
L 16 mm (0.63 in.)
M 12.8 to 13.0 mm (0.50 to 0.51 in.)

C1 Chamfer 1.0 mm (0.039 in.)
R5 5. 0 mm radius (0.20 in. radius)

W10497240

G-52

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

[2] SPECIAL TOOLS FOR TRACTOR

Steering Wheel Puller

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

Toe-in Gauge

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

G GENERAL

the steering shaft.

W10265330

models.

W10266890

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) Adap tor C (PS3/8) (07916-50371)
(7) Adap tor D (PT1/8) (07916-50381)
(8) Adap tor E (PS 3 /8) (07916-50392)
(9) Adap tor F (PF1/2) (07916-62601)

(10) Adaptor 58 (PT1/4) (07916-52391)

W1026741

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) Adap tor 65

(9) Adap tor 66
(10) Adaptor 67
(11) Adaptor 68
(12) Adaptor 69
(13) Hydraulic Adaptor 1

W10313960

G-53

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

G GENERAL

PTO Shift Arm Ball Guide

Application: Use for compressing the ball and spring into the

transmission case.

A 0.51 rad (30 °)
B 29.95 to 29.98 mm dia. (1.179 to 1.180 in. dia.)
C 35 mm (1.38 in.)
D 20 mm (0.79 in.)

C1 Chamfer 1 mm (0.039 in.)

(1) PTO Shift Arm Ball Guide

W10824210

Independent PTO Clutch Spring Compression Tool

Application: Use for compressing the spring into the spline boss.

This tool can be used fo r B30 s eries, B X50 s erie s and
BX24 tractor.

A 12 mm (0.47 in.)
B 25.4 mm (1.00 in.)
C 19 mm radius (0.75 in.) Hex.
D 2.7 mm (0.11 in.)
E 8 mm (0.3 in.)
F 15 mm dia. (0.59 in. dia.)
G 37 mm ( 1 .5 i n .)
H 70 mm (2.76 in.)

I M14 ×1.5

J R 3.0 mm (0.12 in.)
K 30 mm (1.18 in.)
L 17 mm (0.67 in.)
M 38 mm (1.50 in.)

W10495600

G-54

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

Check and High Pressure Relief Valve Assembly Tool

G GENERAL

Application: Use for Readjusting relief valve pressure.

A 30.0 mm (1.18 in.) N Chamfer 0.4 mm (0.12 in.) a 1.05 rad (60.0 °)
B 21.0 mm (0.827 in.) O Chamfer 3.0 mm (0.12 in.) b Chamfer 0.3 mm (0.01 in.)
C 1 mm (0.04 in.) P Chamfer 2.0 mm (0.079 in.) c 23.0 mm (0.906 in.)
D 0.52 rad (30 °) Q 21.4 mm (0.843 in.) d 10.0 mm (0.394 in.)
E 50.0 mm dia. (1.97 in. dia.) R 19.0 mm (0.748 in.) e 1 mm (0.039 in.)
F 10.0 mm dia. (0.39 in. dia.) S 17.0 mm (0.669 in.) f 6.5 mm (0.26 in.)

9.10 to 9.30 mm dia.

G

(0.359 to 0.366 in.)

H 34.0 mm dia. (1.34 in. dia.) U 50.0 mm dia. (1.97 in. dia.) h 11.1 to 11.3 mm (0.437 to 0.444 in.)

I M36 x 1.5 mm Pitch V 9.8 mm dia. (0.39 in. dia.) i 18.8 to 19.0 mm (0.741 to 0.748 in.)
J 10.0 mm (0.39 in.) W 16.0 mm dia. (0.630 in. dia.)
K 16.0 mm (0.63 in.) X 34.5 mm dia. (1.36 in. dia.) (1) Spacer (for ZD and ZG Series)
L 41.0 mm (1.61 in.) Y 38.0 mm dia. (1.50 in. dia.) (2) Block
M Chamfer 1 mm (0.04 in.) Z 25.0 mm (0.984 in.) (3) Cap

T 10.0 mm (0.394 in.) g Chamfer 0.5 mm (0.02 in.)

G-55

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

G GENERAL

[3] SPECIAL TOOLS FOR CABIN

• 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- 000 61
Application: Use for charging, testing or discharging the air

conditioning system.

W10839110

(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 95146-0006 0
Application: Use for gas leak testing the air conditioning system.

W1013817

Vacuum Pump

Code No: DENSO 95046-00040 (AC220V)

95046-00050 (AC240V)

Application: Use for evacuating the air conditioning system.

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

W1013764

G-56

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

Stopper Magnet Clutch (For A/C Compressor)

G GENERAL

Adaptor (For R134a)

Code No: DENSO 95048-10190 (AC220V)

95048-10200 (AC240V)

Application: Use for evacuating the air conditioning system.

W1013888

Application: Use for loosen and tighten the magnet clutch mounting nut.

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

NOTE

A 125 mm (4.92 in.) G 3 × M8 × 1.25 All screws
B 40 mm dia. (1.57 in. dia.) H 4.52 rad (120 °)
C Radius 33 mm (Radius 1.30 in.) I Radius 27 mm (Radius 1.06 in.)
D 16 mm (0.63 in.) J Radius 50 mm (Radius 1.97 in.)
E 120 mm dia. (4.72 in. dia.) K Weld all around
F 12 mm dia. (0.47 in. dia.) L 20 mm (0.78 in.)

G-57

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

G GENERAL

9. TIRES

[1] TIRE PRESSURE

WARNING

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

• Always maintain the correct tire pressure. Do not inflate tires above the recommended pressure shown in
the operator's manual.

Though the tire pressure is factory-set to the prescribed level, it naturally drops slowly in the course of time. Thus,

check it everyday and inflate as necessary.

[B1830, B2230, B2530]

Rear

Front

Tire sizes Inflation pressure

8-16, 4PR 160 kPa (1.6 kgf/cm

9.5-16, 4PR 140 kPa (1.4 kgf/cm

9.5-18, 4PR 140 kPa (1.4 kgf/cm

10.5-18, 4PR 140 kPa (1.4 kgf/cm
315/75D-15, 4PR 100 kPa (1.0 kgf/cm
31 x 13.5-15, 4PR 140 kPa (1.4 kgf/cm
6-12B, 4PR 200 kPa (2.0 kgf/cm
6-12, 4PR 200 kPa (2.0 kgf/cm

6.00-12, 4PR 180 kPa (1.8 kgf/cm

7.00-12, 4PR 170 kPa (1.7 kgf/cm
24 x 8.50-12, 4PR 160 kPa (1.6 kgf/cm
22 x 8.50-12, 4PR 160 kPa (1.6 kgf/cm

2

, 23 psi)

2

, 20 psi)

2

, 20 psi)

2

, 20 psi)

2

, 14 psi)

2

, 20 psi)

2

, 28 psi)

2

, 28 psi)

2

, 26 psi)

2

, 24 psi)

2

, 23 psi)

2

, 23 psi)

[B3030]

Rear

Front

Tire sizes Inflation pressure

12.4-16, 4PR 110 kPa (1.1 kgf/cm

13.6-16, 4PR 100 kPa (1.0 kgf/cm
7-12, 4PR 170 kPa (1.7 kgf/cm
24 x 8.50-12, 4PR 150 kPa (1.5 kgf/cm

2

, 16 psi)

2

, 14 psi)

2

, 24 psi)

2

, 22 psi)

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

■ Dual Tires

Dual tires are not approved.

G-58

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

[2] TREAD

CAUTION

• Support tractor securely on stands before removing a wheel.

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

• Always attach tires as shown in the figure.

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

• Do not use tires larger than specified.

Wheel Mounting Bolts and Nuts

CAUTION

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

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

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

Check wheel bolts and nuts regularly especially when new. If

they are loose, tighten them as follows.

Front wheel mounting nut

Tightening torque

Rear wheel mounting bolt

Rear wheel mounting nut

G GENERAL

77 to 90 N·m

7.9 to 9.2 kgf·m
57 to 67 lbf·ft

196 to 225 N·m
20 to 23 kgf·m
145 to 166 lbf·ft

167 to 191 N·m
17 to 19.5 kgf·m
123 to 141 lbf·ft

(1) Rear Wheel Mounting Bolt
(2) Rear Wheel Mounting Nut

(3) Front Wheel Mounting Nut

W1085050

G-59

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

(1) Front Wheels

Front wheel tread can not be adjusted.

• Do not turn front discs to obtain wider tread. In setting up the front wheels, make sure that the inflation
valve stem of the tires face outward.

■ B1830, B2230 and B2530

Models B1 830 B2230 B2530 B1830 / B2230 B2530

Tire 6-12B Farm 6-12 Farm 6.00-12 Farm

Tread

22 x 8.50 - 12

Turf

24 x 8.50 - 12

Turf

a : 835 mm (32.9 in.) b : 870 mm (34.3 in.)

■ B3030
Tire 7 - 12 Farm 24 x 8.50 - 14 Turf

Tread

a : 935 mm (36.8 in.) b : 970 mm (38.2 in.)

Tightening torque Front wheel

(1) Wheel Mounting Screw

149.2 to 179.0 N·m

15.2 to 18.3 kgf·m
110 to 132 lbf·ft

W1045824

G-60

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

(2) Rear Wheels

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

Rear tread can be adjusted as shown with the standard equipped tires to change tread.

1. Loosen the nut of cotter pin bolt.

2. Remove the snap pin and wheel hub pin.

3. Change the tread to the desired position.

4. Re-set the wheel hub pin, snap pin and cotter pin bolt.

■ B1830, B2230, B2530

Models B1830 B2230 B2530 B1830 / B2230 B2530

Tire 8-16B Farm 9.5-16 Farm 9.5-18 Farm

31 x 13.5-15

Turf

315/75D-15 Turf

Tread

a : 970 mm (42.3 in.)
b : 800 mm (31.5 in.)
c : 1075 mm (42.3 in.)

d : 855 mm (33.7 in.)
e : 1095 mm (43.1 in.)
f : 850 mm (33.5 in.)

g : 1145 mm (45.1 in.)
h : 975 mm (38.4 in.)

i : 1145 mm (45.1 in.)
j : 925 mm (36.4 in.)

G-61

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

• 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 the recheck after driving the tractor 200 m
200 yards) and thereafter according to service interval.

• Insert the bolt from the indented side of the cotter as shown.

Rear wheel hub nut

Tightening torque

Rear wheel hub stud bolt

123 to 147 N·m

12.6 to 15.0 kgf·m

91.1 to 108.5 lbf·ft
108 to 125 N·m

11 .0 to 1 2. 8 kgf·m

79.6 to 92.6 lbf·ft

■ B3030
Tire 12.4-16 Farm 13 .6- 16 Turf

Tread

a : 1050 mm (41.3 in.) b : 1050 mm (41.3 in.)

(1) Nut
(2) Spring Washer
(3) Cotter 1
(4) Wheel Hub Pin
(5) Snap Pin

(6) Hub
(7) Stud Bolt
(8) Cotter 2
(9) Bolt

W1040710

G-62

B1830, B2230, B2530, B3030, WSM

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

[3] TIRE LIQUID INJECTION AND BALLAST

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

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 s ince it freezes a t 0 °C (32 °F). The cal cium chloride s olution will n ot freeze and mo reover, 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

CAUTION

• 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)

-30 °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
(26.5 U.S.gals, 22.0 Imp.gals) of water

2 to be dissolved in 100 L

(a) Water
(b) CaCl

2 (Calcium Chloride)

A : Bad
B : Good

W1029958

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) Hos e

W1087226

G-63

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

Injection and Rear Ballast

CAUTION

• 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).

The following four ways can be used to in jec t wate r or a calci um

chloride solution into tires.

1. Gravity injection (Fig. 1)

2. Pump injection (Fig. 2)

3. Pressure tank injection (Fig. 3)

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

NOTE

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

■ Liquid Ballast in Rear Tires : Liquid weight pen tire (75 %
filled)

Tire sizes 9.5 - 22

Slush free at −10 °C (14 °F)
Solid at −30 °C (−22 °F)
[Approx. 1 kg (2 lbs) CaCl

Slush free at −24 °C (−11 °F)
Solid at −47 °C (−52 °F)
[Approx. 1.5 kg (3.5 lbs) CaCl
water]

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

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

2 per 4 L (1 gal.) of water]

2 per 4 L (1 gal.) of

2 per 4 L (1 gal.) of

(A) Correct : 75 % Full Air

Compresses Like a Cushion

(B) Incorrect : 100 % Water can not be

compressed

85 kg (187 lbs)

89 kg (196 lbs)

94 kg (207 lbs)

W1033435

G-64

B1830, B2230, B2530, B3030, WSM

NOTE■

IMPORTANT■

KiSC issued 03, 2007 A

G GENERAL

Front Ballast

Add weights in needed for stability and improving traction. Heavy
pulling and heavy rear mounted implements tend to lift front wheels.
Add enough ballast to maintain steering control and prevent tip over.

Remove weight when no longer needed.

■ Front End Weights (option)

The front end weights can be attached to the bumper.
See your implement operator's manual for required number of
weights.

• [For installation of up to three weights]
Besides the weight, mounting bolt kit(s) are required for
mounting the weight.

• [For installation of up to five weights]
Besides the weight, a front weight bracket and mounting
bolt kit(s) are required for mounting the weight.

• Do not overload tires.

• Add no more weight than indicated in chart.

Maximum front weight

75 kg
165 lbs

(1) Front End Weight (2) Front Weight Bracket (Option)

W1088279

G-65

B1830, B2230, B2530, B3030, WSM

■

KiSC issued 03, 2007 A

G GENERAL

10.IMPLEMENT LIMITATIONS

The KUBOTA Tractor has been thoroughly tested for prop er performance with implem ents sold or approved by
KUBOTA. Use with implements which are not sold or approved by KUBOTA and which exceed the maximum
specifications list ed be low, or which are otherwi se unfi t for use wi th the KUB OTA T ractor may resu lt in ma lfunct ion s
or failures of the trac tor, d ama ge t o other property and inj ury to th e op er ato r or othe rs. [ Any m alf unc tio ns or fai lu res
of the tractor resulting from use with improper implements are not covered by the warranty.]

Model

B1830
B2230 1105 mm (43.5 in.)
B2530 1095 mm (43.1 in.)
B3030 935 mm (36.8 in.) 1365 mm (53.7 in.)

Model

B1830
B2230
B2530
B3030

Lower link end max. loading capacity...........The max. allowable load which can be put on the lower link end : W

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

Max. drawbar load....................... ...... ....... ...W 2

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

Implement weight W

As in the following list

(Shown in the next page)

Front Rear

835 mm (32.9 in.)

and / or size

Tread (max. width) Lower link end max. loading

weight W

1025 mm (40.4 in.)

970 kg

(2139 lbs)

Actual figures

1

Max. drawbar load W

500 kg (1100 lbs) 1500 kg (3300 lbs)

2

Trailer loading weight W3

Max. capacity

0

0

NOTE

• Implement size may vary depending on soil operating conditions.

G-66

1 ENGINE

KiSC issued 03, 2007 A

MECHANISM

KiSC issued 03, 2007 A

NOTICE

Regarding engine mechanism information, pleas e refer to Workshop Manual
DIESEL ENGINE, MECHANISM (Code No. 9Y021 - 01874).

SERVICING

KiSC issued 03, 2007 A

CONTENTS

1. TROUBLESHOOTING....................................................................................1-S1

2. SERVICING SPECIFICATIONS ....................................................................1-S4

3. TIGHTENING TORQUES .... ...... ....... ...... ....................................... ...... ....... .1-S10

[1] TRACTOR SECTION.............................................................................1-S10

[2] ENGINE SECTION ................................................................................1-S10

4. CHECKING, DISASSEMBLING AND SERVICING....................................1-S11

[1] CHECKING AND ADJUSTING.............................................................1-S11

(1) Engine Body......................................................................................1-S11

(2) Lubricating System ...........................................................................1-S13

(3) Cooling System.................................................................................1-S14

(4) Fuel System......................................................................................1-S16

[2] PREPARATION ......................................................................................1-S19

(1) Draining Lubricants and Coolant.......................................................1-S19

(2) Separating Cabin from Tractor Body (CABIN) ....... ...... ....... .............. 1-S 22

(3) Separating Engine and Front Case from Tractor..............................1-S29

[3] DISASSEMBLING AND ASSEMBLING................................................1-S38

(1) External Components .......................................................................1-S38

(2) Cylinder Head and Valve and Oil Pan ..............................................1-S39

(3) Gear Case.......... ....... ...... ....................................... ...... ....... ...... ....... .1-S42

(4) Piston and Connecting Rod..............................................................1-S46

(5) Crankshaft.........................................................................................1-S49

[4] SERVICING ............................................................................................1-S51

(1) Cylinder Head and Valves ................................................................1-S51

(2) Idle Gear and Camshaft....................................................................1-S57

(3) Piston and Connecting Rod..............................................................1-S60

(4) Crankshaft.........................................................................................1-S62

(5) Cylinder.............................................................................................1-S66

(6) Oil Pump ...........................................................................................1-S67

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

1. TROUBLESHOOTING

ENGINE

Symptom Probable Cause Solution

Engine Does Not
Start

Engine Revolution Is
Not Smooth

Either White or Blue
Exhaust Gas Is
Observed

No fuel Replenish fuel G-7
Air in the fuel system Bleed G-40
Water in the fuel system Change fuel and

repair or replace fuel

system
Fuel hose clogged Clean G-24, 36
Fuel filter clogged Change G-30
Excessively high viscosity of fuel or engine oil at

low temperature
Fuel with low cetane number Use specified fuel –
Incorrect injection timing Adjust 1-S16
Injection nozzle clogged Repair or replace 1-S17, S18
Injection pump malfunc tio nin g Replace 1-S44
Seizure of crankshaft, camshaft, piston, cylinder

or bearing
Compression leak from cylinder Replace head

Improper valve timing Correct or replace

Piston ring and cylinder worn Replace 1-S48, S66
Excessive valve clearance Adjust 1-S12, S13
ST terminal lead not connected Connect 1-S37
Stop solenoid lead not connected Connect 1-S37
Fuel filter clogged or dirty Replace G-30
Air cleaner clogged Clean or replace G-21
Fuel leak due to loosing injection pipe retaining

nut
Injection pump malfunc tio nin g Replace 1-S44
Incorrect nozzle injection pressure Adjust 1-S18
Injection nozzle stuck or clogged Repair or replace 1-S18
Governor malfunctioni ng Repair –
Excessive engine oil Reduce to specified

Piston ring and cylinder worn or stuck Repair or replace 1-S48, S66
Incorrect injection timing Adjust 1-S16
Deficient compression Repair 1-S11, S61,

Use specified fuel or

engine oil

Repair 1-S45 to

gasket, tighten

cylinder head screw,

glow plug and nozzle

holder

timing gear

Tigh ten retaining nut 1-S39

level

Reference
Page

–

G-7

S50

1-S41 to

S42

1-S45

G-13

S66

W1014322

1-S1

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE

Symptom Probable Cause Solution

Either Black or Dark
Gray Exhaust Gas Is
Observed

Overload Reduce the load –
Low grade fuel used Use specified fuel –

Reference
Page

Fuel filter clogged Replace G-30
Air cleaner clogged Clean or replace G-21
Deficient nozzle injection Repair or replace

1-S17, S18

nozzle

Deficient Output Incorrect injectio n timing Adjust 1-S16

Engine's moving parts seem to be seizing Repair or replace –
Uneven fuel injection Replace injection

1-S44

pump

Deficient nozzle injection Repair or replace

1-S17, S18

nozzle

Compression leak Replace head

gasket, tighten

1-S39 to

S41
cylinder head screw,
glow plug and nozzle
holder

Excessive Lubricant
Oil Consumption

Piston ring's gap facing the same direction Shift ring gap

direction

1-S47

Oil ring worn or stuck Replace 1-S48
Piston ring groove worn Replace piston 1-S47
Valve stem and valve guide worn Replace 1-S53
Oil leaking due to defective seals or packing Replace –

Fuel Mixed into
Lubricant Oil

Injection pump's plunger worn Replace injection

pump

Deficient nozzle injection Repair or replace

1-S44

1-S17, S18

nozzle

Injection pump broken Replace 1-S44

Water Mixed into
Lubricant Oil

Head gasket defective Replace 1-S41
Cylinder block or cylinder head flawed Replace 1-S41

Low Oil Pressure Engine oil insufficient Replenish G-13

Oil strainer clogged Clean 1-S46
Oil filter cartridge clogged Replace G-13
Relief valve stuck with dirt Clean –
Relief valve spring weaken or broken Replace –
Excessive oil clearance of crankshaft bearing Replace 1-S64
Excessive oil clearance of crankpin bearing Replace 1-S63
Excessive oil clearance of rocker arm Replace 1-S55
Oil passage clogged Clean –
Different type of oil Use specified type of

G-7

oil

Oil pump defective Repair or replace 1-S67

1-S2

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE

Symptom Probable Cause Solution

High Oil Pressure Different type of oil Use specified type of

Reference
Page

G-7

oil

Relief valve defective Replace –

Engine Overheated Engine oil insufficient Replenish G-13

Fan belt broken or tensioned improperly Replace or adjust 1-S14
Coolant insufficient Replenish G-37
Radiator net and radiator fin clogged with dust Clean –
Inside of radiator corroded Clean or replace G-37
Coolant flow route corroded Clean or replace G-37
Radiator cap defective Replace 1-S15
Radiator hose damaged Replace G-36
Overload running Reduce the load –
Head gasket defective Replace 1-S41
Incorrect injection timing Adjust 1-S16
Unsuitable fuel used Use specifi ed fuel G-7

W1014322

1-S3

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

2. SERVICING SPECIFICATIONS

ENGINE BODY

Item Factory Specification Allowable Limit

Valve Clearance (Cold) 0.145 to 0.185 mm

0.0057 to 0.0073 in.

Compression Pressure

2.84 to 3.23 MPa

29.0 to 33.0 kgf/cm
412 to 469 psi

ENGINE

–

2

2.25 MPa

23.0 kgf/cm

2

327 psi

Variance Among Cylinders

–

Top Clearance 0.55 to 0.70 mm

10 % or less

–

0.0217 to 0.0276 in.

Cylinder Head Surface Flatness – 0.05 mm

0.0020 in.

Valve Recessing Intake and Exhaust 0.05 to 0.25 mm

0.0020 to 0.0098 in.

Valve Stem to Valve Guide

Clearance

0.035 to 0.065 mm

0.0014 to 0.0025 in.

Valve Stem

O.D.

6.960 to 6.975 mm

0.40 mm

0.0157 in.

0.10 mm

0.0039 in.
–

0.2741 to 0.2746 in.

Valve Guide

I.D.

7.010 to 7.025 mm

–

0.2760 to 0.2765 in.

Valve Face Angle (Intake)

1.047 rad

–

60 °

Angle (Exhaust)

0.785 rad

–

45 °

Valve Guide
(Intake and Exhaust)

Valve Seat Angle (Intake)

7.010 to 7.025 mm

0.2760 to 0.2765

1.047 rad

–

–

60 °

Valve Spring Free Length

Angle (Exhaust)

Width

Tilt

Setting Load

1-S4

0.785 rad
45 °

2.12 mm

0.0835 in.

37.0 to 37.5 mm

1.457 to 1.476 in.
–

117.4 N / 31.0 mm

11.97 kgf / 31.0 mm

26.4 lbf / 1.22 in.

–

36.5 mm

1.437 in.

1.0 mm

0.039 in.

100.0 N / 31.0 mm

10.2 kgf / 31.0 mm

22.5 lbf / 1.22 in.

W10138740

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE BODY (Continued)

Rocker Arm Shaft to Rocker Arm

ENGINE

Item Factory Specification Allowable Limit

Clearance

0.016 to 0.045 mm

0.00063 to 0.00177 in.

0.10 mm

0.0039 in.

Rocker Arm Shaft

O.D.

11.973 to 11.984 mm

–

0.4714 to 0.4718 in.

Rocker Arm

I.D.

12.000 to 12.018 mm

–

0.4724 to 0.4731 in.

Push Rod Alignment – 0.25 mm

0.0098 in.

Tappet to Tappet Guide Bore

Tappet

Clearance

O.D.

0.020 to 0.062 mm

0.0008 to 0.0024 in.

19.959 to 19.980 mm

0.07 mm

0.0028 in.
–

0.7858 to 0.7866 in.

Tappet Guide

I.D.

20.000 to 20.021 mm

–

0.7874 to 0.7882 in.

Idle Gear

Crank Gear to Idle Gear 1

Idle Gear 1 to Cam Gear

Idle Gear 1 to Injection Pump Gear

Backlash

Backlash

Backlash

0.032 to 0.115 mm

0.0013 to 0.0045 in.

0.036 to 0.114 mm

0.0014 to 0.0045 in.

0.034 to 0.116 mm

0.0013 to 0.0046 in.

0.15 mm

0.0059 in.

0.15 mm

0.0059 in.

0.15 mm

0.0059 in.

Idle Gear 1 to Idle Gear 2

Idle Gear Shaft to Gear Bushing

Idle Gear 1

Idle Gear Bushing

Idle Gear Shaft 1

Idle Gear 2

Idle Gear Bushing

Idle Gear Shaft 2

Backlash

Clearance

I.D.

O.D.

Clearance

I.D.

O.D.

0.033 to 0.117 mm

0.0013 to 0.0046 in.

0.020 to 0.054 mm

0.0008 to 0.0021 in.

26.000 to 26.021 mm

1.0236 to 1.0244 in.

25.967 to 25.980 mm

1.0223 to 1.0228 in.

0.020 to 0.054 mm

0.0008 to 0.0021 in.

26.000 to 26.021 mm

1.0236 to 1.0244 in.

25.967 to 25.980 mm

1.0223 to 1.0228 in.

0.15 mm

0.0059 in.

0.10 mm

0.0039 in.
–

–

0.10 mm

0.0039 in.
–

–

W1013874

1-S5

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE BODY (Continued)

Idle Gear

Idle Gear 1

ENGINE

Item Factory Specification Allowable Limit

Side Clearance

0.20 to 0.51 mm

0.0079 to 0.0201 in.

0.80 mm

0.0315 in.

Idle Gear 2

Side Clearance

0.20 to 0.51 mm

0.0079 to 0.0201 in.

Camshaft Side Clearance

0.07 to 0.22 mm

0.0028 to 0.0087 in.

Alignment

Cam Height Intake

–

28.80 mm

1.1339 in.

Exhaust

29.0 mm

1.1417 in.

Camshaft Journal to Cylinder Block Bore

Oil Clearance

0.050 to 0.091 mm

0.00197 to 0.00358 in.

Camshaft Journal

O.D.

35.934 to 35.950 mm

1.4147 to 1.4153 in.

Cylinder Block Bore

I.D.

36.000 to 36.025 mm

1.4173 to 1.4183 in.

Piston Pin Bore I.D. 22.000 to 22.013 mm

0.8661 to 0.8667 in.

Piston Pin to Small End Bushing

Clearance

0.014 to 0.038 mm

0.00055 to 0.00150 in.

0.80 mm

0.0315 in.

0.30 mm

0.0118 in.

0.01 mm

0.0004 in.

28.75 mm

1.1319 in.

28.95 mm

1.1398 in.

0.15 mm

0.0059 in.
–

–

22.03 mm

0.8673 in.

0.15 mm

0.0059 in.

Piston Pin

Small End Bushin g

Piston Pin to Small End Bushing (Spare
Parts)

Small End Bushing

Piston Ring Gap [D905-E2]

Top Ring

Second Ring

Oil Ring

O.D.

I.D.

Clearance

I.D.

22.002 to 22.011 mm

0.8662 to 0.8666 in.

22.025 to 22.040 mm

0.8671 to 0.8677 in.

0.015 to 0.075 mm

0.00059 to 0.00295 in.

22.062 to 22.077 mm

0.7885 to 0.7904 in.

0.25 to 0.40 mm

0.0098 to 0.0157 in.

0.25 to 0.40 mm

0.0098 to 0.0157 in.

0.25 to 0.40 mm

0.0098 to 0.0157 in.

–

–

0.15 mm

0.0059 in.
–

1.25 mm

0.0492 in.

1.25 mm

0.0492 in.

1.25 mm

0.0492 in.

W10138740

1-S6

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE BODY (Continued)

Item Factory Specification Allowable Limit

Piston Ring Gap [D1005-E2, D1105-E2,
V1505-E2]]

Top Ring

0.30 to 0.45 mm

0.0118 to 0.0177 in.

ENGINE

1.25 mm

0.0492 in.

Second Ring

Oil Ring

0.30 to 0.45 mm

0.0118 to 0.0177 in.

0.25 to 0.40 mm

0.0098 to 0.0157 in.

1.25 mm

0.0492 in.

1.25 mm

0.0492 in.

Piston Ring to Piston Ring Groove

Second Ring

Oil Ring

Clearance

Clearance

0.085 to 0.112 mm

0.0033 to 0.0044 in.

0.020 to 0.055 mm

0.0008 to 0.0021 in.

0.2 mm

0.0079 in.

0.15 mm

0.0059 in.

Connecting Rod Alignment – 0.05 mm

0.0020 in.

Crankshaft Side Clearance

Alignment

0.15 to 0.31 mm

0.0059 to 0.0122 in.
–

0.50 mm

0.0197 in.

0.02 mm

0.0008 in.

Crankshaft to Crankshaft Bearing 1

Crankshaft

Oil Clearance

O.D.

0.034 to 0.114 mm

0.0013 to 0.0045 in.

47.934 to 47.950 mm

0.20 mm

0.0079 in.
–

1.8872 to 1.8878 in.

Crankshaft Bearing 1

Crankshaft to Crankshaft Bearing 2

Crankshaft Journal

Crankshaft Bearing 2

Crankshaft to Crankshaft Bearing 3

Crankshaft Journal

Crankshaft Bearing 3

I.D.

Oil Clearance

O.D.

I.D.

Oil Clearance

O.D.

I.D.

47.984 to 48.048 mm

1.8891 to 1.8916 in.

0.034 to 0.095 mm

0.0013 to 0.0037 in.

47.934 to 47.950 mm

1.8872 to 1.8878 in.

47.984 to 48.029 mm

1.8891 to 1.8909 in.

0.034 to 0.098 mm

0.0013 to 0.0039 in.

51.921 to 51.940 mm

2.0441 to 2.0449 in.

51.974 to 52.019 mm

2.0462 to 2.0480 in.

–

0.20 mm

0.0079 in.
–

–

0.20 mm

0.0079 in.
–

–

W10138740

1-S7

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

ENGINE BODY (Continued)

Crankpin to Crankpin Bearing

ENGINE

Item Factory Specification Allowable Limit

Oil Clearance

0.029 to 0.091 mm

0.0011 to 0.0036 in.

0.20 mm

0.0079 in.

Crankpin

O.D.

39.959 to 39.975 mm

1.5732 to 1.5738 in.

Crankpin Bearing

I.D.

40.004 to 40.050 mm

1.5750 to 1.5768 in.

Crankshaft Side Clearance 0.15 to 0.31 mm

0.0059 to 0.0122 in.

Cylinder Liner I.D. D905-E2

72.000 to 72.019 mm

2.8346 to 2.8354 in.

D1005-E2

76.000 to 76.019 mm

2.9921 to 2.9929 in.

D1105-E2B
V1505-E2B

Cylinder Liner I.D. (Oversized) D905-E2

78.000 to 78.019 mm

3.0709 to 3.0716 in.

72.500 to 72.519 mm

2.85433 to 2.85507 in.

D1005-E2

76.500 to 76.519 mm

3.0118 to 3.0126 in.

D1105-E2B
V1505-E2B

78.500 to 78.519 mm

3.0906 to 3.0913 in.

–

–

0.50 mm

0.0197 in.

72.15 mm

2.8406 in.

76.15 mm

2.9980 in.

78.15 mm

3.0768 in.

72.65 mm

2.8602 in.

76.65 mm

3.0177 in.

78.65 mm

3.0965 in.

W11340480

LUBRICATING SYSTEM

Item Factory Specification Allowable Limit

Engine Oil Pressure At Idle Speed

More than 49 kPa

0.5 kgf/cm

2

7 psi

At Rated Speed

196 to 441 kPa

2.0 to 4.5 kgf/cm
36 to 64 psi

Inner Rotor to Outer Rotor Clearance 0.06 to 0.18 mm

0.0024 to 0.0071 in.

Outer Rotor to Pump Body Clearance 0.100 to 0.180 mm

0.0039 to 0.0071 in.

Inner Rotor to Cover Clearance 0.025 to 0.075 mm

0.0010 to 0.0030 in.

–

147 kPa

2

1.5 kgf/cm

2

27 psi

–

–

–

W10139730

1-S8

B1830, B2230, B2530, B3030, WSM

KiSC issued 03, 2007 A

COOLING SYSTEM

Item Factory Specification Allowable Limit

Fan Belt Tension 7 to 9 mm / 98 N

0.28 to 0.35 in. / 98 N
(10 kgf, 22 lbf)

Thermostat Valve Opening

Temperature

69.5 to 72.5 °C

157.1 to 162.5 °F

(At Beginning)

ENGINE

–

–

Valve Opening
Temperature

85 °C

185 °F

–

(Opened
Completely)

Radiator Cap Pressure Falling

Time

10 seconds or more

88 → 59 kPa

0.9 → 0.6 kgf/cm

2

–

13 → 9 psi

Radiator Water Leakage

Test Pressure

No leak at specified

pressure

–

137 kPa

1.4 kgf/cm

2

20 psi

W10135990

FUEL SYSTEM

Item Factory Specification Allowable Limit

Injection Pump Injection Timing 0.27 to 0.31 rad

–

(16 to 18 °)

before T.D.C.

Pump Element Fuel Tightness – 13.73 MPa

140 kgf/cm

1991 psi

Delivery Valve Fuel Tightness 10 seconds or more for

pressure falling

from

13.73 → 12.75 MPa

from 140 → 130 kgf/cm

from 1991 → 1849 psi

5 seconds or more

for pressure falling

from

13.73 → 12.75 MPa

2

from

140 → 130 kgf/cm

from

1991 → 1849 psi

Injection Nozzle Injection Pressure 13.73 to 14.71 MPa

140 to 150 kgf/cm

2

–

1990 to 2130 psi

Injection Nozzle Valve Seat Valve Seat

Tightness

When the pressure is

12.75 MPa

(130 kgf/cm

2

, 1849 psi)

–

W10139730

2

2

1-S9

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

ENGINE

3. TIGHTENING TORQUES

Tightening torque of sc rews , bolt s an d nuts on the ta ble b elow are spe cially spe cified. (For gen eral u se scr ews,

bolts and nuts : See page G-8.)

• In removing and applying the bolts and nuts marked with " * ", a pneumatic wrench or similar pneumatic
tool, if employed, must be used with enough care not to get them seized.

• For " * " marked screws, bolts and nuts on the table, apply engine oil to their threads and seats before
tightening.

• The letter "M" in Size × Pitch means that the screw, bolt or nut dimension stands for metric. The size is
the nominal outside diameter in mm of the threads. The pitch is the nominal distance in mm between two
threads.

[1] TRACTOR SECTION

Item N·m kgf·m lbf·ft

Steering wheel mounting nut 29.4 to 49.0 3.0 to 5.0 21.7 to 36.2
Cabin mounting bolts and nuts (M14) 100 to 120 10.2 to 12.2 73.8 to 88.5
Cabin support mounting bolt 100 to 110 10.2 to 11.2 73.8 to 81.1
ROPS mounting bolt (for middle and lower frame 9/16-

18UNF)
ROPS mounting bolt (M12) 90 to 95 9.2 to 9.7 66.4 to 70.1

Sub-frame mounting bolt (M10) for alminum 39.3 to 45.1 4.0 to 4.6 29.0 to 33.2
Sub-frame mounting bolt (M12) for alminum 62.8 to 72.5 6.4 to 7.4 46.3 to 53.5
Sub-frame mounting bolt for ordinary material (M12) 77.5 to 90.2 7.9 to 9.2 57.2 to 66.5
Sub-frame mounting bolt for ordinary material (M14) 126 to 150 12.9 to 15.3 93 to 111
Engine and front case mounting bolt and nut (M8) 23.6 to 27.4 2.4 to 2.8 17.4 to 20.2
Engine and front case mounting stud bolt (M10) 48.1 to 55.8 4.9 to 5.7 35.5 to 41.2
Engine and front axle frame mounting bolt (M10) 48.1 to 55.8 4.9 to 5.7 35.5 to 41.2

124 to 147 12.6 to 15.0 91.2 to 108

W1120105

[2] ENGINE SECTION

Item Size x Pitch N·m kgf·m lbf·ft

Oil pressure switch – 14.7 to 19.6 1.5 to 2.0 10.8 to 14.5
Nozzle holder – 34.3 to 39.2 3.5 to 4.0 25.3 to 28.9
Overflow pipe nut – 19.6 to 24.5 2.0 to 2.5 14.5 to 18.1
Nozzle holder assembly – 49.0 to 68.6 5.0 to 7.0 36.2 to 50.6
*Cylinder head cover nuts M7 x 1.0 6.9 to 8.8 0.70 to 0.90 5.1 to 6.5
Injection pipe retaining nuts M12 x 1.5 24.5 to 34.3 2.5 to 3.5 18.1 to 25.3
*Rocker arm bracket nuts M7 x 1.0 21.6 to 26.5 2.2 to 2.7 15.9 to 19.5
*Cylinder head screw M10 x 1.25 63.7 to 68.6 6.5 to 7.0 47.0 to 50.6
*Fan drive pulley screw M14 x 1.5 235.4 to 245.2 24.0 to 25.0 173.6 to 180.8
Idle gear 2 lock nut – 25 to 29 2.5 to 3.0 18 to 21
Idle gear 2 bearing nut – 35 to 39 3.5 to 4.0 26 to 28
*Connecting rod screw M8 x 1.0 41.2 to 46.1 4.2 to 4.7 30.4 to 34.0
*Flywheel screw M10 x 1.25 53.9 tos 58.8 5.5 to 6.0 39.8 to 43.4
*Bearing case cover screws M6 x 1.0 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
*Main bearing case screw 2 M9 x 1.25 49.0 to 53.9 5.0 to 5.5 36.2 to 39.8
*Main bearing case screw 1 M8 x 1.25 29.4 to 34.3 3.0 to 3.5 21.7 to 25.3

W1013236

1-S10

B1830, B2230, B2530, B3030, WSM

NOTE■

KiSC issued 03, 2007 A

4. CHECKING, DISASSEMBLING AND SERVICING

[1] CHECKING AND ADJUSTING

(1) Engine Body

Compression Pressure

1. Run the engine until it is warmed up.

2. Stop the engine.

3. Remove the air cleaner, the muffler and all glow plugs (or
nozzles).

4. Set a comp ression t ester with the adapto r to the glow plug h ole
(or nozzle hole).
Nozzle Hole : Adaptor H
Glow Plug Hole : Adaptor L

5. After making s ure that the stop lever is set at the stop position
(non-injection), ru n the engine with the starter and measure the
compression pressure.

6. Repeat steps 4 and 5 for each cylinder.

7. If the measurement i s below the allowable limit, apply a small
amount of oil to the cylinder wall through the gl ow plug hole (or
nozzle hole) and measure the compression pressure again.

8. If the compression pr essure is still less than the allowable limit ,
check the top clearance, valve clearance and cylinder head.

9. If the comp ression pressure increases after appl ying oil, check
the cylinder wall and piston rings.

ENGINE

• Check the compression pressure with the specified valve
clearance.

• Always use a fully charged battery for performing this test.

• Variances in cylinder compression values should be under
10 %.

Compression pressure

Factory spec.

Allowable limit

2.84 to 3.23 MPa

29.0 to 33.0 kgf/cm
412 to 469 psi

2.25 MPa

23.0 kgf/cm
327 psi

2

2

W1013828

1-S11