08 kubota 03 series gb

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V2003-T-BF2503-T-B

WORKSHOP MANUALDIESEL ENGINE

C O N T E N T S

TO THE READER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . 2

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-0

SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-0

DIESEL ENGINE V2003-T-B/F2503-T-B

1 CONTENTS

2 CONTENTS

3CONTENTS

4CONTENTS

45CONTENTS

56 CONTENTS

M E C H A N I S MI N D E X

DIESEL ENGINE V2003-T-B/F2503-T-B

1. ENGINE BODY ...................................................................................................................M-1[1] CYLINDER BLOCK..........................................................................................................M-1[2] CYLINDER HEAD............................................................................................................M-1[3] CRANKSHAFT.................................................................................................................M-2[4] PISTON AND PISTON RINGS ........................................................................................M-2[5] CONNECTING ROD........................................................................................................M-3[6] ROCKER ARM.................................................................................................................M-3[7] CAMSHAFT .....................................................................................................................M-3[8] FUEL CAMSHAFT ...........................................................................................................M-4[9] FLYWHEEL......................................................................................................................M-42. LUBRICATING SYSTEM....................................................................................................M-5[1] GENERAL........................................................................................................................M-5[2] OIL PUMP........................................................................................................................M-6[3] RELIEF VALVE................................................................................................................M-6[4] OIL FILTER CARTRIDGE................................................................................................M-7[5] OIL PRESSURE SWITCH ...............................................................................................M-7

3. COOLING SYSTEM............................................................................................................M-8[1] GENERAL........................................................................................................................M-8[2] WATER PUMP.................................................................................................................M-8[3] THERMOSTAT ................................................................................................................M-9[4] RADIATOR (not included in the basic engine).................................................................M-9[5] RADIATOR CAP ............................................................................................................M-104. INTAKE / EXHAUST SYSTEM........................................................................................ M-11[1] AIR CLEANER (not included in the basic engine) .........................................................M-11[2] MUFFLER (not included in the basic engine) ................................................................M-11

5. FUEL SYSTEM .................................................................................................................M-12[1] GENERAL......................................................................................................................M-12[2] INJECTION PUMP.........................................................................................................M-12

(1) Pump Element ..........................................................................................................M-13(2) Delivery Valve...........................................................................................................M-13(3) Dumping Valve .........................................................................................................M-14(4) Injection Control........................................................................................................M-14

[3] INJECTION NOZZLE.....................................................................................................M-15[4] FUEL FILTER (not included in the basic engine)...........................................................M-15[5] GOVERNOR ..................................................................................................................M-166. ELECTRICAL SYSTEM....................................................................................................M-18[1] CHARGING SYSTEM....................................................................................................M-18

(1) Alternator ..................................................................................................................M-18(2) IC Regulator..............................................................................................................M-18

7. TURBO CHARGER SYSTEM...........................................................................................M-19(1) Mechanism ...............................................................................................................M-20(2) Turbine......................................................................................................................M-21(3) Compressor ..............................................................................................................M-21(4) Bearing .....................................................................................................................M-22(5) Seals (Piston Rings) .................................................................................................M-23

M-0CONTENTS

M-1INDEX

M-2INDEX

M-3INDEX

M-4INDEX

M-5 INDEX

M-6INDEX

M-7INDEX

M-8INDEX

M-9INDEX

M-10INDEX

M-11INDEX

M-12INDEX

M-13INDEX

M-14INDEX

M-15INDEX

M-16INDEX

M-17INDEX

M-18INDEX

M-19INDEX

M-20INDEX

M-21INDEX

M-22INDEX

M-23INDEX

S E R V I C I N GI N D E X

DIESEL ENGINE V2003-T-B/F2503-T-B

G. GENERAL.....................................................S-1

[1] ENGINE IDENTIFICATION...........................S-1

(1) Model Name and Engine Serial Number .......S-1

(2) Cylinder Number......................................S-1

[2] GENERAL PRECAUTION............................S-2

[3] TIGHTENING TORQUES.............................S-3

(1) Tightening torques for special use

screws,bolts and nuts .......S-3

(2) Tightening torques for general use

screws,bolts and nuts .......S-3

[4] TROUBLESHOOTING..................................S-4

[5] SERVICING SPECIFICATIONS ...................S-7

(1) Engine Body............................................S-7

(2) Lubricating System................................S-12

(3) Cooling System .....................................S-12

(4) Fuel System...........................................S-13

(5) Electrical System...................................S-14

[6] MAINTENANCE CHECK LIST....................S-15

[7] CHECK AND MAINTENANCE....................S-16

(1) Daily Check Points ................................S-16

(2) Check Point of Every 50 hours..............S-17

(3) Check Point of Every 100 hours............S-18

(4) Check Point of Every 150 / 200 hours...S-19

(5) Check Point of Every 400 hours............S-19

(6) Check Point of Every 800 hours............S-20

(7) Check Point of Every 2 years................S-21

[8] SPECIAL TOOLS........................................S-22

1. ENGINE BODY............................................S-28

CHECKING AND ADJUSTING.........................S-28

DISASSEMBLING AND ASSEMBLING............S-31

[1] DRAINING WATER AND OIL.....................S-32

[2] EXTERNAL COMPONENTS......................S-33

[3] CYLINDER HEAD AND VALVES ...............S-34

[4] GEAR CASE...............................................S-36

[5] PISTON AND CONNECTING ROD............S-39

[6] FLYWHEEL AND CRANKSHAFT...............S-42

SERVICING ......................................................S-44

[1] CYLINDER HEAD.......................................S-44

[2] TIMING AND CAMSHAFT..........................S-50

[3] PISTON AND CONNECTING ROD............S-52

[4] CRANKSHAFT............................................S-56

[5] CYLINDER..................................................S-61

2. LUBRICATING SYSTEM.............................S-62

CHECKING.......................................................S-62

SERVICING ......................................................S-63

[1] OIL PUMP...................................................S-63

3. COOLING SYSTEM.....................................S-64

CHECKING.......................................................S-64

[1] FAN BELT...................................................S-64

[2] RADIATOR .................................................S-64

DISASSEMBLING AND ASSEMBLING............S-65

4. FUEL SYSTEM............................................S-67

CHECKING AND ADJUSTING.........................S-67

[1] INJECTION PUMP......................................S-67

[2] INJECTION NOZZLE..................................S-69

DISASSEMBLING AND ASSEMBLING............S-70

[1] INJECTION PUMP......................................S-70

[2] INJECTION NOZZLE..................................S-70

5. ELECTRICAL SYSTEM...............................S-71

CHECKING.......................................................S-71

[1] STARTER...................................................S-71

[2] GLOW PLUG..............................................S-72

DISASSEMBLING AND ASSEMBLING............S-72

[1] STARTER...................................................S-72

[2] ALTERNATOR............................................S-73

SERVICING ......................................................S-76

[1] STARTER...................................................S-76

[2] ALTERNATOR............................................S-78

S-0CONTENTS

S-1INDEX

S-2INDEX

S-3INDEX

S-4INDEX

S-17

S-18

S-20

S-28

S-30

S-38

S-54, 61

S-67

S-69

S-71

S-17

S-69S-69

S-30S-30

S-5INDEX

S-16

S-29

S-29

S-54

S-54, 61

S-67

S-67

S-69

S-69

S-29

S-21S-18S-69

S-28

S-30S-18

S-54S-46

58, 59S-56, 57

S-54

S-6INDEX

S-57S-49

S-19

S-16

S-65

S-67

S-64

S-80

S-45

S-58, 59

S-62, 63

S-18

S-7INDEX

S-8INDEX

S-9INDEX

S-10INDEX

INDEXS-11

S-12INDEX

S-13INDEX

S-14INDEX

S-15INDEX

S-16INDEX

S-17INDEX

S-18INDEX

S-19INDEX

S-20INDEX

S-21INDEX

S-22INDEX

S-23INDEX

S-24INDEX

S-25INDEX

S-26INDEX

S-27INDEX

S-28INDEX

S-29INDEX

S-30INDEX

S-31 INDEX

S-32INDEX

S-33INDEX

S-34 INDEX

S-35INDEX

S-36INDEX

S-37INDEX

S-38 INDEX

S-39INDEX

S-40INDEX

S-41 INDEX

S-42INDEX

S-43INDEX

S-44INDEX

S-45INDEX

S-46INDEX

S-47INDEX

S-48INDEX

S-23

S-49INDEX

S-50INDEX

S-51INDEX

S-52INDEX

S-53INDEX

S-54INDEX

S-55INDEX

S-56INDEX

S-57INDEX

S-58INDEX

S-59INDEX

S-60INDEX

S-61INDEX

S-62INDEX

S-63INDEX

S-64 INDEX

S-65INDEX

S-66INDEX

S-67INDEX

S-68INDEX

S-69INDEX

S-70INDEX

S-71INDEX

S-72INDEX

S-73INDEX

S-74INDEX

S-75INDEX

S-76INDEX

S-77INDEX

S-78INDEX

S-79INDEX

S-80INDEX