Kubota L3130, L3430, L3830, L4330, L4630 Shop manual

WORKSHOP MANUAL

KiSC issued 06, 2006 A

TRACTOR

L3130,L3430,L3830,

L4330,L4630,L5030

TO THE READER

KiSC issued 06, 2006 A

This Workshop Manual has been prepared to provide servicing personnel with
information on the me chanism, service and mainte nance of KUBOTA Tractor L3 130,
L3430, L3830, L4330, L4 630 and L50 30. It i s d ivid ed i nto two p art s, “Mec han is m” an d
“Servicing” for each section.

■ Mechanism

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

Refer to Diesel engine / Tr actor Mechanism Workshop Manu al (Code No. 97897­01872 / 97897-18200) for the one which has not been described to this workshop
manual.

■ Servicing

The heading “Gener al” includes general prec autions, check and ma intenance and
special tools. Other section, there are troubleshooting, servicing specification lists,
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.

© KUBOTA Corporation 2002

October 2002

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

SAFETY FIRST

KiSC issued 06, 2006 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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L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 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.

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L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 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

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SAFETY INSTRUCTIONS

SAFETY DECALS

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

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L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SAFETY INSTRUCTIONS

5

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SAFETY INSTRUCTIONS

6

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SAFETY INSTRUCTIONS

7

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

SPECIFICATIONS

L3130

Model

2WD (ROPS) 4WD (ROPS) 4WD (ROPS) 4WD (ROPS)

Model D1503-MA-E-GST / D1503-MA-E2-GST
Type Indirect injection vertical, water-cooled, 4-cycle diesel

Number of cylinders 3
Total displacement 1.499 L (91.5 cu.in.)

Engine

Capacities

Dimensions

Weight (with ROPS) 1415 kg (3120 lbs) 1460 kg (3220 lbs) 1480 kg (3265 lbs) 1500 kg (3305 lbs)

Travelling
system

Hydraulic
system

PTO

Note : * Manufacture’s estimate

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

Bore and stroke 83 × 92.4 mm (3.3 × 3.6 in.)
Net power 23.1 kW (31.0 HP)*
PTO power

(factory observe)
Maximum torque 102.9 N·m (10.5 kgf·m, 75.9 ft-lbs)
Battery capacity 12 V, RC : 123 min, CCA : 490 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 40 L (10.6 U.S.gals., 8.8 Imp.gals.)
Engine crankcase

(with filter)
Engine coolant 6.0 L (6.3 U.S.qts., 5.3 Imp.qts.)
Transmission case 42 L (11.1 U.S.gals., 9.2 Imp.gals.)
Overall length

(without 3P)
Overall width (min. tread) 1520 mm (59.8 in.)
Overall height (with ROPS

foldable / rigid)
Wheel base 1810 mm (71.3 in.) 1805 mm (71.1 in.)
Min. ground clearance 360 mm (14.2 in.)

1310 mm (51.6 in.)

Tread

Standard
tire size

Clutch Dry type single stage
Steering Hydrostatic power steering

Transmission

Braking system Wet disk type
Min. turning radius

(with brake)
Hydraulic control system Position control
Pump capacity 31.5 L (8.3 U.S.gals., 6.9 Imp.gals.) / min.
Three point hitch SAE Category I

Max. lift
force

System pressure 17.1 to 18.1 MPa (175 to 185 kgf/cm
Rear PTO SAE 1-3/8, 6 splines

PTO / Engine speed 540 min
Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline

PTO / Engine speed 2000 min

Front

Rear 1200 mm (47.2 in.), 1300 mm (51.2 in.), 1385 mm (54.5 in.), 1480 mm (58.3 in.)

Front 6-16 7.2-16
Rear 12.4-24

At lift points 1700 kg (3750 lbs)
24 in. behind

lift points

1410 mm (55.5 in.)
1510 mm (59.4 in.)
1610 mm (63.4 in.)

F8, R8 fully synchronized main and shuttle

2.6 m (8.5 feet) 2.7 m (8.9 feet)

Manual GST HST

D1503-MA-E-HST /
D1503-MA-E2-HST

19.0 kW (25.5 HP)* / 2700 min

5.7 L (6.0 U.S.qts., 5.0 Imp.qts.)

2915 mm (114.8 in.)

2305 mm (90.7 in.) / 2140 mm (84.3 in.)

transmission

1200 kg (2650 lbs)

−1

(rpm) / 2550 min−1 (rpm)

−1

(rpm) / 2580 min−1 (rpm)

−1

(rpm)

1155 mm (45.5 in.)

F12, R8 Glide shift

transmission

2

, 2491 to 2633 psi)

17.9 kW (24.0 HP)* /
2700 min−1 (rpm)

Hydrotstatic

transmission

540 min−1 (rpm) /
2640 min

2000 min−1 (rpm) /

2670 min

(3 speeds)

−1

(rpm)

−1

(rpm)

W10281170

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L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

L3430

Model

Manual GST HST

4WD (ROPS) 4WD (ROPS) 4WD (ROPS) 4WD (CABIN)

Model D1703-MA-E-GST / D1703-MA-E2-GST D1703-MA-E-HST / D1703-MA-E2-HST
Type Indirect injection vertical, water-cooled, 4-cycle diesel
Number of cylinders 3
Total displacement 1.647 L (100.5 cu.in.)
Bore and stroke 87 × 92.4 mm (3.4 × 3.6 in.)

Engine

Net power 25.1 kW (33.6 HP)*
PTO power

(factory observe)

21.3 kW (28.5 HP)* / 2700 min

−1

(rpm) 20.1 kW (27.0 HP)* / 2700 min−1 (rpm)

Maximum torque 108.3 N·m (11.05 kgf·m, 79.9 ft-lbs)
Battery capacity 12 V, RC : 123 min, CCA : 490 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 40 L (10.6 U.S.gals., 8.8 Imp.gals.)

Capacities

Engine crankcase
(with filter)

5.7 L (6.0 U.S.qts., 5.0 Imp.qts.)

Engine coolant 6.0 L (6.3 U.S.qts., 5.3 Imp.qts.)
Transmission case 42 L (11.1 U.S.gals., 9.2 Imp.gals.)
Overall length

(without 3P)

2915 mm (114.8 in.)

Overall width (min. tread) 1520 mm (59.8 in.)
Overall height

Dimensions

(with CABIN or ROPS
foldable / rigid)

2305 mm (90.7 in.) / 2140 mm (84.3 in.) 2195 mm (86.4 in.)

Wheel base 1805 mm (71.1 in.)
Min. ground clearance 360 mm (14.2 in.)

Tread

Front 1155 mm (45.5 in.)
Rear 1200 mm (47.2 in.), 1300 mm (51.2 in.), 1385 mm (54.5 in.), 1480 mm (58.3 in.)

Weight (with ROPS or CABIN) 1460 kg (3220 lbs) 1480 kg (3265 lbs) 1500 kg (3305 lbs) 1650 kg (3638 lbs)

Standard
tire size

Front 7.2-16

Rear 12.4-24
Clutch Dry type single stage
Steering Hydrostatic power steering

Travelling
system

Transmission

F8, R8 fully

synchronized main

and shuttle

transmission

F12, R8 Glide shift

transmission

Hydrotstatic transmission

(3 speeds)

Braking system Wet disk type
Min. turning radius

(with brake)

2.7 m (8.9 feet)

Hydraulic control system Position control
Pump capacity 31.5 L (8.3 U.S.gals., 6.9 Imp.gals.) / min.

Hydraulic
system

Three point hitch SAE Category I
Max. lift

force

At lift points 1700 kg (3750 lbs)

24 in. behind

lift points

1200 kg (2650 lbs)

System pressure 17.1 to 18.1 MPa (175 to 185 kgf/cm

2

, 2491 to 2633 psi)

Rear PTO SAE 1-3/8, 6 splines

PTO

PTO / Engine speed 540 min
Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline
PTO / Engine speed 2000 min

−1

(rpm) / 2550 min−1 (rpm) 540 min−1 (rpm) / 2640 min−1 (rpm)

−1

(rpm) / 2580 min−1 (rpm) 2000 min−1 (rpm) / 2670 min−1 (rpm)

Note : * Manufacture’s estimate

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

W10357910

9

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

L3830

Model

Manual GST HST

2WD (ROPS) 4WD (ROPS) 4WD (ROPS) 4WD (ROPS)

Model D1803-M-E-GST / D1803-M-E2-GST

D1803-M-E-HST /

D1803-M-E2-HST
Type Indirect injection vertical, water-cooled, 4-cycle diesel
Number of cylinders 3
Total displacement 1.826 L (111.4 cu.in.)

Engine

Bore and stroke 87 × 102.4 mm (3.4 × 4.0 in.)
Net power 27.9 kW (37.4 HP)*
PTO power

(factory observe)

23.9.0 kW (32.0 HP)* / 2700 min

−1

(rpm)

22.8 kW (30.5 HP)* /
2700 min

−1

(rpm)
Maximum torque 120.7 N·m (12.3 kgf·m, 89.0 ft-lbs)
Battery capacity 12 V, RC : 133 min, CCA : 582 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 40 L (10.6 U.S.gals., 8.8 Imp.gals.)

Capacities

Engine crankcase
(with filter)

6.7 L (7.1 U.S.qts., 5.9 Imp.qts.)

Engine coolant 7.5 L (7.9 U.S.qts., 6.6 Imp.qts.)
Transmission case 43 L (11.4 U.S.gals., 9.5 Imp.gals.)
Overall length

(without 3P)

2985 mm (117.5 in.)

Overall width (min. tread) 1690 mm (66.5 in.)

Dimensions

Overall height (with ROPS
foldable / rigid)

Wheel base 1845 mm (72.6 in.) 1840 mm (72.4 in.)

2315 mm (91.1 in.) / 2155 mm (84.8 in.)

Min. ground clearance 375 mm (14.8 in.)

1310 mm (51.6 in.)
1410 mm (55.5 in.)
1510 mm (59.4 in.)
1610 mm (63.4 in.)

1155 mm (45.5 in.)

Tread

Front

Rear 1285 mm (50.6 in.), 1435 mm (56.5 in.), 1530 mm (60.2 in.)

Weight (with ROPS) 1430 kg (3155 lbs) 1480 kg (3265 lbs) 1495 kg (3295 lbs) 1515 kg (3340 lbs)

Standard
tire size

Front 6-16 8.3-16
Rear 14.9-24

Clutch Dry type single stage

Travelling
system

Steering Hydrostatic power steering

Transmission

F8, R8 fully synchronized main and shuttle

transmission

F12, R8 Glide shift

transmission

Hydrotstatic

transmission

(3 speeds)

Braking system Wet disk type
Min. turning radius

(with brake)

2.6 m (8.5 feet) 2.7 m (8.9 feet)

Hydraulic control system Position control
Pump capacity 31.5 L (8.3 U.S.gals., 6.9 Imp.gals.) / min.

Hydraulic
system

Three point hitch SAE Category I

Max. lift
force

At lift points 1750 kg (3860 lbs)
24 in. behind

lift points

1250 kg (2760 lbs)

System pressure 17.1 to 18.1 MPa (175 to 185 kgf/cm

2

, 2491 to 2633 psi)

Rear PTO SAE 1-3/8, 6 splines

−1

(rpm) /

−1

(rpm)

−1

(rpm) /

−1

(rpm)

PTO

−1

PTO / Engine speed 540 min

(rpm) / 2550 min−1 (rpm)

Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline
PTO / Engine speed 2000 min

−1

(rpm) / 2580 min−1 (rpm)

540 min
2640 min

2000 min

2670 min

Note : * Manufacture’s estimate

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

W10375160

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L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

L4330

Model

Manual GST HST

4WD (ROPS) 4WD (ROPS) 4WD (ROPS) 4WD (CABIN)

Model V2203-MA-E-GST / V2203-MA-E2-GST V2203-MA-E-HST / V2203-MA-E2-HST
Type Indirect injection vertical, water-cooled, 4-cycle diesel
Number of cylinders 4
Total displacement 2.197 L (134.1 cu.in.)
Bore and stroke 87 × 92.4 mm (3.4 × 3.6 in.)

Engine

Net power 30.6 kW (41.0 HP)*
PTO power

(factory observe)

26.9 kW (36.0 HP)* / 2600 min

−1

(rpm) 25.7 kW (34.5 HP)* / 2600 min−1 (rpm)

Maximum torque 146.2 N·m (14.9 kgf·m, 107.8 ft-lbs)
Battery capacity 12 V, RC : 133 min, CCA : 582 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 40 L (10.6 U.S.gals., 8.8 Imp.gals.)

Capacities

Engine crankcase
(with filter)

8.2 L (8.7 U.S.qts., 7.2 Imp.qts.)

Engine coolant 7.5 L (7.9 U.S.qts., 6.6 Imp.qts.)
Transmission case 43 L (11.4 U.S.gals., 9.5 Imp.gals.)
Overall length

(without 3P)

3080 mm (121.3 in.)

Overall width (min. tread) 1690 mm (66.5 in.)
Overall height

Dimensions

(with CABIN or ROPS
foldable / rigid)

2315 mm (91.1 in.) / 2155 mm (84.8 in.) 2210 mm (87.0 in.)

Wheel base 1895 mm (74.6 in.)
Min. ground clearance 375 mm (14.8 in.)

Tread

Front 1300 mm (51.2 in.)
Rear 1285 mm (50.6 in.), 1435 mm (56.5 in.), 1530 mm (60.2 in.)

Weight (with ROPS or CABIN) 1560 kg (3440 lbs) 1575 kg (3470 lbs) 1600 kg (3525 lbs) 1750 kg (3858 lbs)

Standard
tire size

Front 8.3-16

Rear 14.9-24
Clutch Dry type single stage
Steering Hydrostatic power steering

Travelling
system

Transmission

F8, R8 fully

synchronized main

and shuttle

transmission

F12, R8 Glide shift

transmission

Hydrotstatic transmission

(3 speeds)

Braking system Wet disk type
Min. turning radius

(with brake)

2.7 m (8.9 feet)

Hydraulic control system Position control
Pump capacity 35.6 L (9.4 U.S.gals., 7.8 Imp.gals.) / min.

Hydraulic
system

Three point hitch SAE Category I
Max. lift

force

At lift points 1750 kg (3860 lbs)

24 in. behind

lift points

1250 kg (2760 lbs)

System pressure 18.1 to 19.1 MPa (185 to 195 kgf/cm

2

, 2633 to 2775 psi)

Rear PTO SAE 1-3/8, 6 splines

PTO

PTO / Engine speed 540 min
Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline
PTO / Engine speed 2000 min

−1

(rpm) / 2550 min−1 (rpm) 540 min−1 (rpm) / 2440 min−1 (rpm)

−1

(rpm) / 2580 min−1 (rpm) 2000 min−1 (rpm) / 2470 min−1 (rpm)

Note : * Manufacture’s estimate

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

W10388600

11

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

L4630

Model

Manual GST HST

4WD (ROPS) 4WD (ROPS) 4WD (CABIN) 4WD (ROPS)

Model V2203-MB- E-GS T / V2203-MB -E2-G S T

V2203-MB-E-HST /

V2203-MB-E2-HST
Type Indirect injection vertical, water-cooled, 4-cycle diesel
Number of cylinders 4
Total displacement 2.197 L (134.1 cu.in.)

Engine

Bore and stroke 87 × 92.4 mm (3.4 × 3.6 in.)
Net power 33.3 kW (44.7 HP)*
PTO power

(factory observe)

29.5 kW (39.5 HP)* / 2700 min

−1

(rpm)

28.3 kW (38.0 HP)* /
2700 min−1 (rpm)

Maximum torque 146.2 N·m (14.9 kgf·m, 107.8 ft-lbs)
Battery capacity 12 V, RC : 133 min, CCA : 582 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 40 L (10.6 U.S.gals., 8.8 Imp.gals.)

Capacities

Engine crankcase
(with filter)

8.2 L (8.7 U.S.qts., 7.2 Imp.qts.)

Engine coolant 7.5 L (7.9 U.S.qts., 6.6 Imp.qts.)
Transmission case 43 L (11.4 U.S.gals., 9.5 Imp.gals.)
Overall length

(without 3P)

3080 mm (121.3 in.)

Overall width (min. tread) 1690 mm (66.5 in.)

Dimensions

Overall height
(with CABIN or ROPS
foldable / rigid)

2315 mm (91.1 in.) / 2155 mm (84.8 in.) 2210 mm (87.0 in.)

2315 mm (91.1 in.) /

2155 mm (84.8 in.)

Wheel base 1895 mm (74.6 in.)
Min. ground clearance 375 mm (14.8 in.)

Tread

Front 1300 mm (51.2 in.)
Rear 1285 mm (50.6 in.), 1435 mm (56.5 in.), 1530 mm (60.2 in.)

Weight (with ROPS or CABIN) 1560 kg (3440 lbs) 1575 kg (3470 lbs) 1730 kg (3815 lbs) 1600 kg (3525 lbs)

Standard
tire size

Front 8.3-16

Rear 14.9-24
Clutch Dry type single stage
Steering Hydrostatic power steering

Travelling
system

Transmission

F8, R8 fully

synchronized main

and shuttle

transmission

F12, R8 Glide shift transmission

Hydrotstatic

transmission

(3 speeds)

Braking system Wet disk type
Min. turning radius

(with brake)

2.7 m (8.9 feet)

Hydraulic control system Position control
Pump capacity 37.0 L (9.8 U.S.gals., 8.1 Imp.gals.) / min.

Hydraulic
system

Three point hitch SAE Category I
Max. lift

force

At lift points 1750 kg (3860 lbs)

24 in. behind

lift points

1250 kg (2760 lbs)

System pressure 18.1 to 19.1 MPa (185 to 195 kgf/cm

2

, 2633 to 2775 psi)

Rear PTO SAE 1-3/8, 6 splines

540 min−1 (rpm) /
2640 min

2000 min−1 (rpm) /

2670 min

−1

−1

(rpm)

(rpm)

PTO

PTO / Engine speed 540 min

−1

(rpm) / 2550 min−1 (rpm)

Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline
PTO / Engine speed 2000 min

−1

(rpm) / 2580 min−1 (rpm)

Note : * Manufacture’s estimate

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

W10400750

12

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

SPECIFICATIONS

L5030

Model

GST HST

4WD (ROPS) 4WD (ROPS) 4WD (CABIN)

Model

V2403-MA-E-GST /
V2403-MA-E2-GST

V2403-MA-E-HST / V2403-MA-E2-HST

Type Indirect injection vertical, water-cooled, 4-cycle diesel

Number of cylinders 4

Total displacement 2.434 L (148.5 cu.in.)

Engine

Bore and stroke 87 × 102.4 mm (3.4 × 4.0 in.)

Net power 37.3 kW (50.0 HP)*

PTO power

(factory observe)

32.8 kW (44.0 HP)* /
2700 min

−1

(rpm)

31.7 kW (42.5 HP)* / 2700 min

−1

(rpm)

Maximum torque 162.4 N·m (16.6 kgf·m, 119.8 ft-lbs)
Battery capacity 12 V, RC : 133 min, CCA : 582 A
Fuel Diesel fuel No. 1 [below −10 °C (14 °F], Diesel fuel No. 2-D [above −10 °C (14 °F)]
Fuel tank 43 L (11.4 U.S.gals., 9.5 Imp.gals.)

Capacities

Engine crankcase
(with filter)

8.2 L (8.7 U.S.qts., 7.2 Imp.qts.)

Engine coolant 8.0 L (8.5 U.S.qts., 7.0 Imp.qts.)
Transmission case 45 L (11.9 U.S.gals., 9.9 Imp.gals.)
Overall length

(without 3P)

3205 mm (126.2 in.)

Overall width (min. tread) 1710 mm (67.3 in.)
Overall height

Dimensions

(with CABIN or ROPS
foldable / rigid)

2355 mm (92.7 in.) / 2190 mm (86.2 in.) 2270 mm (89.4 in.)

Wheel base 1915 mm (75.4 in.)
Min. ground clearance 405 mm (15.9 in.)

Tread

Front 1340 mm (52.8 in.)
Rear 1325 mm (52.2 in.), 1430 mm (56.3 in.)

Weight (with ROPS or CABIN) 1680 kg (3705 lbs) 1700 kg (3750 lbs) 1855 kg (4090 lbs)

Standard
tire size

Front 9.5-16
Rear 14.9-26

Clutch Dry type single stage

Travelling
system

Steering Hydrostatic power steering
Transmission

F12, R8 Glide shift

transmission

Hydrotstatic transmission (3 speeds)

Braking system Wet disk type
Min. turning radius

(with brake)

2.8 m (9.2 feet)

Hydraulic control system Position control
Pump capacity 37.0 L (9.8 U.S.gals., 8.1 Imp.gals.) / min.

Hydraulic
system

Three point hitch SAE Category I

Max. lift
force

At lift points 1750 kg (3860 lbs)
24 in. behind

lift points

1350 kg (2980 lbs)

System pressure 18.1 to 19.1 MPa (185 to 195 kgf/cm

2

, 2633 to 2775 psi)

Rear PTO SAE 1-3/8, 6 splines

−1

(rpm) /

−1

(rpm) /

−1

(rpm)

540 min−1 (rpm) / 2660 min−1 (rpm)

−1

2000 min

(rpm) / 2690 min−1 (rpm)

PTO

PTO / Engine speed

540 min
2550 min−1 (rpm)

Mid-PTO (if equipped) USA No. 5 (KUBOTA 10-tooth) involute spline
PTO / Engine speed

2000 min

2580 min

Note : * Manufacture’s estimate

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

W10417330

13

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

TRAVELLING SPEEDS

TRAVELLING SPEEDS

[Manual Transmission Type]

Model

Tire size (Rear) 12.4-24 14.9-24 14.9-24 14.9-24 14.9-26
Shuttle shift

lever

Forward
(At rated
engine rpm)

Reverse
(At rated
engine rpm)

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

Range
gear shift
lever

Low

High

Low

High

Main gear
shift lever km/h (mph) km/h (mph) km/h (mph) km/h (mph) km/h (mph)

1 1.6 (1.0) 1.5 (0.9) 1.6 (1.0) 1.5 (0.9) 1.5 (0.9)
2 2.3 (1.4) 2.1 (1.3) 2.2 (1.4) 2.1 (1.3) 2.2 (1.4)
3 3.7 (2.3) 3.5 (2.2) 3.6 (2.2) 3.5 (2.2) 3.5 (2.2)
4 5.4 (3.4) 5.1 (3.2) 5.3 (3.3) 5.1 (3.2) 5.2 (3.2)
1 7.8 (4.8) 7.6 (4.7) 7.7 (4.8) 7.6 (4.7) 7.8 (4.8)
2 11.1 (6.9) 10.7 (6.6) 10.9 (6.8) 10.7 (6.6) 11.0 (6.8)
3 18.0 (11.2) 17.4 (10.8) 17.6 (10.8) 17.4 (10.8) 17.9 (10.9)
4 26.6 (16.5) 25.7 (16.0) 26.0 (16.2) 25.7 (16.0) 26.4 (16.4)
1 1.5 (0.9) 1.4 (0.9) 1.5 (0.9) 1.4 (0.9) 1.5 (0.9)
2 2.2 (1.4) 2.0 (1.2) 2.1 (1.3) 2.0 (1.2) 2.1 (1.3)
3 3.5 (2.2) 3.3 (2.1) 3.4 (2.1) 3.3 (2.1) 3.4 (2.1)
4 5.2 (3.2) 4.9 (3.0) 5.1 (3.2) 4.9 (3.0) 5.0 (3.1)
1 7.5 (4.7) 7.2 (4.5) 7.3 (4.5) 7.2 (4.5) 7.4 (4.6)
2 10.6 (6.6) 10.2 (6.3) 10.4 (6.5) 10.2 (6.3) 10.4 (6.5)
3 17.2 (10.7) 16.6 (10.3) 16.8 (10.4) 16.6 (10.3) 17.1 (10.6)
4 25.4 (15.8) 24.5 (15.2) 24.8 (15.4) 24.5 (15.2) 25.2 (15.7)

L3130
L3430

L3830 L4330 L4630 L5030

W1035065

14

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

TRAVELLING SPEEDS

[GST Type]

Model

L3130
L3430

L3830 L4330 L4630 L5030

Tire size (Rear) 12.4-24 14.9-24 14.9-24 14.9-24 14.9-26
Shuttle shift

lever

Main gear shift
lever

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

1 1.6 (1.0) 1.5 (0.9) 1.6 (1.0) 1.5 (0.9) 1.5 (0.9)
2 2.3 (1.4) 2.1 (1.3) 2.2 (1.4) 2.1 (1.3) 2.2 (1.4)
3 3.1 (1.9) 2.9 (1.8) 3.0 (1.9) 2.9 (1.8) 2.9 (1.8)
4 3.7 (2.3) 3.5 (2.2) 3.6 (2.2) 3.5 (2.2) 3.5 (2.2)
5 4.5 (2.8) 4.2 (2.6) 4.4 (2.7) 4.2 (2.6) 4.3 (2.7)

Forward

6 5.4 (3.4) 5.1 (3.2) 5.3 (3.3) 5.1 (3.2) 5.2 (3.2)

(At rated
engine rpm)

7 6.5 (4.0) 6.3 (3.9) 6.4 (4.0) 6.3 (3.9) 6.5 (4.0)
8 7.8 (4.8) 7.6 (4.7) 7.7 (4.8) 7.6 (4.7) 7.8 (4.8)

9 9.2 (5.7) 8.9 (5.5) 9.0 (5.6) 8.9 (5.5) 9.1 (5.7)
10 11.1 (6.9) 10.7 (6.6) 10.9 (6.8) 10.7 (6.6) 11.0 (6.8)
11 18.0 (11.2) 17.4 (10.8) 17.6 (10.8) 17.4 (10.8) 17.9 (10.9)
12 26.6 (16.5) 25.7 (16.0) 26.0 (16.2) 25.7 (16.0) 26.4 (16.4)

1 1.5 (0.9) 1.4 (0.9) 1.5 (0.9) 1.4 (0.9) 1.5 (0.9)

2 2.2 (1.4) 2.0 (1.2) 2.1 (1.3) 2.0 (1.2) 2.1 (1.3)

3 3.5 (2.2) 3.3 (2.1) 3.4 (2.1) 3.3 (2.1) 3.4 (2.1)

Reverse

4 5.2 (3.2) 4.9 (3.0) 5.1 (3.2) 4.9 (3.0) 5.0 (3.1)

(At rated
engine rpm)

5 7.5 (4.7) 7.2 (4.5) 7.3 (4.5) 7.2 (4.5) 7.4 (4.6)

6 10.6 (6.6) 10.2 (6.3) 10.4 (6.5) 10.2 (6.3) 10.4 (6.5)

7 17.2 (10.7) 16.6 (10.3) 16.8 (10.4) 16.6 (10.3) 17.1 (10.6)

8 25.4 (15.8) 24.5 (15.2) 24.8 (15.4) 24.5 (15.2) 25.2 (15.7)

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

W1032246

15

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

TRAVELLING SPEEDS

[With Creep Speed Model]

Model L4630 CABIN

Creep gear shift lever High Low
Tire size (Rear) 14.9-24
Shuttle shift lever Main gear shift lever km/h (mph) km/h (mph)

1 1.5 (0.9) 0.17 (0.11)
2 2.1 (1.3) 0.24 (0.15)
3 2.9 (1.8) 0.32 (0.20)
4 3.5 (2.2) 0.39 (0.24)
5 4.2 (2.6) 0.47 (0.29)

Forward
(At rated engine rpm)

6 5.1 (3.2) 0.57 (0.35)
7 6.3 (3.9) 0.71 (0.44)
8 7.6 (4.8) 0.85 (0.53)

9 8.9 (5.5) 1.00 (0.62)
10 10.7 (6 .6) 1.20 (0.75)
11 17.4 (10.8) 1.95 (1.21)
12 25.7 (16.0) 2.88 (1.79)

1 1.4 (0.9) 0.16 (0.10)

2 2.0 (1.2) 0.23 (0.14)

3 3.3 (2.1) 0.37 (0.23)

Reverse
(At rated engine rpm)

4 4.9 (3.0) 0.55 (0.34)

5 7.2 (4.5) 0.81 (0.50)

6 10.2 (6.2) 1.15 (0.71)

7 16.6 (10.3) 1.86 (1.16)

8 24.5 (15.2) 2.75 (1.71)

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

W1033852

16

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

TRAVELLING SPEEDS

[HST Type]

Model

L3130
L3430

L3830 L4330 L4630 L5030

Tire size (Rear) 12.4-24 14.9-24 14.9-24 14.9-24 14.9-26
Shuttle shift

lever

Forward
(At rated
engine rpm)

Reverse
(At rated
engine rpm)

Range gear
shift lever

L

M

H

L

M

H

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

0 to 6.3

(0 to 3.9)
0 to 12.1

(0 to 7.5)
0 to 27.0

(0 to 16.8)

0 to 5.7

(0 to 3.5)

0 to 10.9

(0 to 6.8)

0 to 24.3

(0 to 15.1)

0 to 5.9

(0 to 3.7)

0 to 11.4

(0 to 7.1)
0 to 25.3

(0 to 15.7)

0 to 5.3

(0 to 3.3)

0 to 10.3

(0 to 6.4)

0 to 22.8

(0 to 14.2)

0 to 6.2

(0 to 3.9)

0 to 11.9

(0 to 7.4)
0 to 26.4

(0 to 16.4)

0 to 5.5

(0 to 3.4)
0 to 10.7

(0 to 6.6)
0 to 23.8

(0 to 14.8)

0 to 5.9

(0 to 3.7)

0 to 11.4

(0 to 7.1)
0 to 25.3

(0 to 15.7)

0 to 5.3

(0 to 3.3)

0 to 10.3

(0 to 6.4)

0 to 22.8

(0 to 14.2)

0 to 6.1

(0 to 3.8)

0 to 11.8

(0 to 7.3)
0 to 26.1

(0 to 16.2)

0 to 5.5

(0 to 3.4)
0 to 10.6

(0 to 6.6)
0 to 23.5

(0 to 14.6)

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

W1034865

17

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

DIMENSIONS

[L3130, L3430, L3830]

DIMENSIONS

18

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

[L4330, L4630, L5030]

DIMENSIONS

19

G GENERAL

KiSC issued 06, 2006 A

GENERAL

KiSC issued 06, 2006 A

CONTENTS

1. TRACTOR IDENTIFICATION ......................................................................... G-1

[1] MODEL NAME AND SERIAL NUMBERS.............................................. G-1

[2] E2 ENGINE ....... ...... ....... ...... ....... ...... ....................................... ...... ....... .... G- 3

[3] CYLINDER NUMBER ............................................................................... G-3

2. GENERAL PRECAUTIONS ............................................................................ G-4

3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING..G-5

[1] WIRING .......................................................... ................................ ........... G-5

[2] BATTERY................................................................................................... G-7

[3] FUSE.......................................................................................................... G-7

[4] CONNECTOR............................................................................................ G-7

[5] HANDLING OF CIRCUIT TESTER......................................................... G-8

4. LUBRICANTS, FUEL AND COOLANT ......................................................... G-9

5. TIGHTENING TORQUES ............................. ....... ...... ....... ...... ....... ...... ....... .. G-11

[1] GENERAL USE SCREWS, BOLTS AND NUTS................................. G-11

6. MAINTENANCE............................................................................................. G-12

7. CHECK AND MAINTENANCE......... ...... ...... ....... ...... ....... ...... ....... ............... G-14

[1] DAILY CHECK........................................................................................ G-14

[2] CHECK POINTS OF INITIAL 50 HOURS........................................... G-15

[3] CHECK POINTS OF EVERY 50 HOURS........................................... G-19

[4] CHECK POINTS OF EVERY 100 HOURS........................................ G-22

[5] CHECK POINTS OF EVERY 200 HOURS......................................... G-27

[6] CHECK POINTS OF EVERY 400 HOURS......................................... G-32

[7] CHECK POINTS OF EVERY 600 HOURS......................................... G-32

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

[9] CHECK POINTS OF EVERY 1500 HOURS....................................... G-32

[10]CHECK POINTS OF EVERY 3000 HOURS....................................... G-32

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

[12]CHECK POINTS OF EVERY 2 YEARS.............................................. G-33

[13]OTHERS .................................................................................................. G-35

8. SPECIAL TOOLS.......................................................................................... G-39

[1] SPECIAL TOOLS FOR ENGINE .......................................................... G-39

[2] SPECIAL TOOLS FOR TRACTOR....................................................... G-47

9. TIRES............................................................................................................. G-55

[1] TIRE PRESSURE................................................................................... G-55

[2] TREADS ADJUSTMENT ........................................................................ G-56

(1) Front Wheels...................................................................................... G-56

(2) Rear Wheels ...................................................................................... G-57

[3] TIRE LIQUID INJECTION...................................................................... G-59

[4] IMPLEMENT LIMITATIONS................................. ....... ...... ...................... G-62

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

1. TRACTOR IDENTIFICATION

[1] MODEL NAME AND SERIAL NUMBERS

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

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

(1) T ractor Identification Plate
(2) CABIN Identification Plate

(CABIN Serial Number)

(3) T ractor Serial Number

G GENERAL

(4) Engine Serial Number
(5) Hour Meter (IntelliPanel Display)

W10106000

G-1

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

G GENERAL

Engine Serial Number

When contacting the m anufacture, always specify your engine

model name and serial number.

The engine model and its serial number need to be identified

before the engine can be serviced or parts replaced.

■ Engine Serial Number

The engine serial number is an identified number for the engine.

It is marked after the engine model number.

It indicates month and year of manufacture as follows.

• Year of manufacture

Alphabet or

Number

1 2001 F 2015
2 2002 G 2016
3 2003 H 2017
4 2004 J 2018
5 2005 K 2019
6 2006 L 2020
7 2007 M 2021
8 2008 N 2022

9 2009 P 2023
A 201 0 R 2024
B 2011 S 2025
C 2012 T 2026
D 2013 V 2027
E 201 4

Year

Alphabet or

Number

Year

• Month of manufacture

Month

January A 0001 ~ A9999 B0001 ~
February C0001 ~ C9999 D0001 ~
March E0001 ~ E9999 F0001 ~
April G0001 ~ G9999 H0001 ~
May J0001 ~ J9999 K0001 ~
June L0001 ~ L9999 M0001 ~
July N0001 ~ N9999 P0001 ~
August Q0001 ~ Q9999 R0001 ~
September S0001 ~ S9999 T0001 ~
October U0001 ~ U9999 V0001 ~
November W0001 ~ W9999 X0001 ~
December Y0001 ~ Y9999 Z0001 ~

Engine Serial Number
0001 ~ 9999 10000 ~

e.g. D1803-3A0001
“3” indicates 2003 and “A” indicates January.

So, 3A indicates that the engine was manufactured on January,

2003.

(1) Engine Model and Serial Number

W1010477

G-2

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

G GENERAL

[2] E2 ENGINE

[ex.: Model Name D1803-M-E2-XXXX]

The emission controls that have been put into effect in various countries to prevent air pollution will be stepped up.

The time to enforce the regulations differs depending on the engine output classifications.

Kubota has been suppl ying the diesel engines conforming to the emission regulations in respect ive countries.
Exhaust emissions regulations shift to the second stage. Kubota executed the improvement of the engine according
to this regulation.

In order to discriminate the engines conforming to Tier 1 / Phase 1 requirements and those conforming to Tier 2 /
Phase 2 requirements , we have adopted E2 as a new model name for the engines conforming Tier 2 / Phase 2
regulations with emission label (1) or (2).

In the after-sale services for 03-M-E2 series engines, only use the dedicated parts for E2 models and carry out the
maintenance services accordingly.

[3] CYL INDER NUMBER

The cylinder numbers of KUB OTA dies el engine ar e des ignated

as shown in the figure.

The sequence of c ylinder numb ers is given as No. 1, No.2, No.3

and No.4 starting from the gear case side.

W1011077

G-3

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 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-4

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

IMPORTANT■

KiSC issued 06, 2006 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) Wiring (Correct)
(2) Wiring (Incorrect)

(3) Dangerous Part
(4) Dangerous Part

• Securely insert grommet.

(1) Grommet (A) Correct

(B) Incorrect

W10113130

W10113880

G-5

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 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-6

L3130 · L3430 · L3830 · L4330 · L4630 · L5030, WSM

KiSC issued 06, 2006 A

[2] BATTERY

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

[3] FUSE

[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-7