Kubota Z482-E2B Instruction manual

SM-E2B SERIES
WORKSHOP MANUAL
DIESEL ENGINE
KiSC issued 06, 2006 A

TO THE READER
This Workshop Manual has been prepared to provide servicing personnel with
information on the mechanism, service and maintenance of SM-E2B series. It is divided
into three parts, “General”, “Mechanism” and “Servicing”.
■General
Information on the engine 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 Engine Mechanism Workshop Manual (Code No. 9Y021-01870) 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.
Due to covering many models of this manual, information or picture being used have
not been specified as one model.
November 2004
© KUBOTA Corporation 2004
KiSC issued 06, 2006 A

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SM-E2B SERIES, WSM SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
BEFORE SERVICING AND REPAIRING
• Read all instructions and safety instructions in this
manual and on your engine safety decals.
• Clean the work area and engine.
• Park the machine on a firm and level ground.
• Allow the engine to cool before proceeding.
• Stop the engine, and remove the key.
• Disconnect the battery negative cable.
• Hang a “DO NOT OPERATE” tag in operator
station.
SAFETY FIRST
This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on
the machine itself to warn of the possibility of personal injury. Read these instructions carefully.
It is essential that you read the instructions and safety regulations before you attempt to repair or use
this unit.
DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
■IMPORTANT : Indicates that equipment or property damage could result if instructions are not
followed.
■NOTE : Gives helpful information.
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SM-E2B SERIES, WSM SAFETY INSTRUCTIONS
SAFETY STARTING
• Do not start the engine by shorting across starter
terminals or bypassing the safety start switch.
• Unauthorized modifications to the engine may impair
the function and / or safety and affect engine life.
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 touch the rotating or hot parts while the engine
is running.
• Never remove the radiator cap while the engine is
running, or immediately after stopping. Otherwise, hot
water will spout out from radiator. Only remove
radiator cap when cool enough to touch with bare
hands. Slowly loosen the cap to first stop to relieve
pressure before removing completely.
• Escaping fluid (fuel or hydraulic oil) under pressure
can penetrate the skin causing serious injury. Relieve
pressure before disconnecting hydraulic or fuel lines.
Tighten all connections before applying pressure.
• Wear a suitable hearing protective device such as
earmuffs or earplugs to protect against objectionable
or uncomfortable loud noises.
AVOID FIRES
• Fuel is extremely flammable and explosive under
certain conditions. Do not smoke or allow flames or
sparks in your working area.
• To avoid sparks from an accidental short circuit,
always disconnect the battery negative cable first and
connect it last.
• Battery gas can explode. Keep sparks and open
flame away from the top of battery, especially when
charging the battery.
• Make sure that no fuel has been spilled on the engine.
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SM-E2B SERIES, WSM SAFETY INSTRUCTIONS
VENTILATE WORK AREA
• If the engine must be running to do some work, make
sure the area is well ventilated. Never run the engine
in a closed area. The exhaust gas contains poisonous
carbon monoxide.
DISPOSE OF FLUIDS PROPERLY
• Do not pour fluids into the ground, down a drain, or
into a stream, pond, or lake. Observe relevant
environmental protection regulations when disposing
of oil, fuel, coolant, electrolyte and other harmful
waste.
PREVENT ACID BURNS
• Sulfuric acid in battery electrolyte is poisonous. It is
strong enough to burn skin, clothing and cause
blindness if splashed into eyes. Keep electrolyte
away from eyes, hands and clothing. If you spill
electrolyte on yourself, flush with water, and get
medical attention immediately.
PREPARE FOR EMERGENCIES
• Keep a first aid kit and fire extinguisher handy at all
times.
• Keep emergency numbers for doctors, ambulance
service, hospital and fire department near your
telephone.
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SM-E2B SERIES, WSM SPECIFICATIONS
SPECIFICATIONS
* The specification described above is of the standard engine of each model.
* Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW W10336300
Model Z482-E2B Z602-E2B
Number of Cylinders 2
Type Vertical, Water-cooled, 4 cycle IDI diesel engine
Bore ×Stroke mm (in.) 67 ×68 (2.64 ×2.68) 72 ×73.6 (2.83 ×2.90)
Total Displacement cm3(cu.in.) 479 (29.23) 599 (36.55)
ISO Net Continous
kW/min-1 (rpm) (HP/min-1 (rpm)) 8.1 / 3600 (10.9 / 3600) 8.8 / 3200 (11.8 / 3200) 10.1 / 3600 (13.5 / 3600)
ISO / SAE Net Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 9.3 / 3600 (12.5 / 3600) 10.1 / 3200 (13.5 / 3200) 11.6 / 3600 (15.5 / 3600)
SAE Gross Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 9.9 / 3600 (13.3 / 3600) 10.8 / 3200 (14.5 / 3200) 12.5 / 3600 (16.8 / 3600)
Maximum Bare Speed (min-1 (rpm)) 3800 3450 3800
Minimum Bare Idling Speed (min-1 (rpm)) 900 to 1000
Combustion Chamber Spherical type (E-TVCS)
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise (viewed from flywheel side)
Injection Nozzle Bosch “Throttle” type
Injection Timing 0.35 rad (20 °) before T.D.C. 0.31 rad (18 °) before T.D.C. 0.35 rad (20 °) before T.D.C.
Firing Order 1-2
Injection Pressure 13.73 MPa (140 kgf/cm2, 1991 psi)
Compression Ratio 23.5 : 1 24 : 1
Lubricating System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Lubricating Filter Full flow paper filter (Cartridge type)
Cooling System Pressurized radiator, forced circulation with water pump (not included in the basic engine)
Starting System Electric Starting with Starter
Starting Motor 12 V, 0.8 kW 12 V, 1.0 kW
Starting Support Device By glow plug in combustion chamber
Battery 12 V, 28 AH equivalent 12 V, 36 AH equivalent
Charging Alternator 12 V, 150 W 12 V, 480 W
Fuel Diesel Fuel No.2-D (ASTM D975)
Lubricating Oil Class CF lubricating oil as per API classification is recommended. If this class of lubricating oil is not available, preferably use Class CD or CE lubricating oil.
For details on recommended lubricating oils, see page G-5, 8.
Lubricating Oil
Capacity
Oil Pan Depth
101 mm (3.98 in.) 2.1 L (0.55 U.S.gals) 2.5 L (0.66 U.S.gals)
Oil Pan Depth
121 mm (4.76 in.) 2.5 L (0.66 U.S.gals) –
Weight (Dry) kg (lbs) 53.1 (117.1) 57.0 (125.7)
KiSC issued 06, 2006 A

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SM-E2B SERIES, WSM SPECIFICATIONS
* The specification described above is of the standard engine of each model.
* Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW W10304910
Model D662-E2B D722-E2B
Number of Cylinders 3
Type Vertical, Water-cooled, 4 cycle IDI diesel engine
Bore ×Stroke mm (in.) 64 ×68 (2.52 ×2.68) 67 ×68 (2.64 ×2.68)
Total Displacement cm3(cu.in.) 656 (40.03) 719 (43.88)
ISO Net Continuous
kW/min-1 (rpm) (HP/min-1 (rpm)) 11.2 / 3600 (15.0 / 3600) 12.2 / 3600 (16.4 / 3600)
ISO / SAE Net Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 12.9 / 3600 (17.3 / 3600) 14.0 / 3600 (18.8 / 3600)
SAE Gross Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 14.3 / 3600 (19.2 / 3600) 14.9 / 3600 (20.0 / 3600)
Maximum Bare Speed (min-1 (rpm)) 3800
Minimum Bare Idling Speed (min-1 (rpm)) 900 to 1000
Combustion Chamber Spherical type (E-TVCS)
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise (viewed from flywheel side)
Injection Nozzle Bosch “Throttle” type
Injection Timing 0.35 rad (20 °) before T.D.C.
Firing Order 1-2-3
Injection Pressure 13.73 MPa (140 kgf/cm2, 1991 psi)
Compression Ratio 23 : 1 23.5 : 1
Lubricating System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Lubricating Filter Full flow paper filter (Cartridge type)
Cooling System Pressurized radiator, forced circulation with water pump (not included in the basic engine)
Starting System Electric Starting with Starter
Starting Motor 12 V, 0.8 kW
Starting Support Device By glow plug in combustion chamber
Battery 12 V, 36 AH equivalent
Charging Alternator 12 V, 150 W
Fuel Diesel Fuel No.2-D (ASTM D975)
Lubricating Oil Class CF lubricating oil as per API classification is recommended. If this class of lubricating oil is not available, preferably use Class CD or CE lubricating oil.
For details on recommended lubricating oils, see page G-5, 8.
Lubricating Oil
Capacity
Oil Pan Depth
101 mm (3.98 in.) 3.2 L (0.85 U.S.gals)
Oil Pan Depth
121 mm (4.76 in.) 3.8 L (1.00 U.S.gals)
Weight (Dry) kg (lbs) 63.7 (140.4) 63.1 (139.1)
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SM-E2B SERIES, WSM SPECIFICATIONS
* The specification described above is of the standard engine of each model.
* Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW W10321290
Model D782-E2B D902-E2B
Number of Cylinders 3
Type Vertical, Water-cooled, 4 cycle IDI diesel engine
Bore ×Stroke mm (in.) 67 ×73.6 (2.64 ×2.90) 72 ×73.6 (2.83 ×2.90)
Total Displacement cm3(cu.in.) 778 (47.48) 898 (54.80)
ISO Net Continuous
kW/min-1 (rpm) (HP/min-1 (rpm)) 11.7 / 3200 (15.7 / 3200) 13.4 / 3200 (18.0 / 3200) 15.2 / 3600 (20.4 / 3600)
ISO / SAE Net Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 13.5 / 3200 (18.1 / 3200) 15.4 / 3200 (20.6 / 3200) 17.5 / 3600 (23.5 / 3600)
SAE Gross Intermittent
kW/min-1 (rpm) (HP/min-1 (rpm)) 14.1 / 3200 (18.9 / 3200) 16.1 / 3200 (21.6 / 3200) 18.5 / 3600 (24.8 / 3600)
Maximum Bare Speed (min-1 (rpm)) 3450 3800
Minimum Bare Idling Speed (min-1 (rpm)) 900 to 1000
Combustion Chamber Spherical type (E-TVCS)
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise (viewed from flywheel side)
Injection Nozzle Bosch “Throttle” type
Injection Timing 0.30 rad (17 °) before T.D.C. 0.31 rad (18 °) before T.D.C. 0.35 rad (20 °) before T.D.C.
Firing Order 1-2-3
Injection Pressure 13.73 MPa (140 kgf/cm2, 1991 psi)
Compression Ratio 24 : 1
Lubricating System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Lubricating Filter Full flow paper filter (Cartridge type)
Cooling System Pressurized radiator, forced circulation with water pump (not included in the basic engine)
Starting System Electric Starting with Starter
Starting Motor 12 V, 1.0 kW 12 V, 1.2 kW
Starting Support Device By glow plug in combustion chamber
Battery 12 V, 36 AH equivalent 12 V, 52 AH equivalent
Charging Alternator 12 V, 150 W 12 V, 480 W
Fuel Diesel Fuel No.2-D (ASTM D975)
Lubricating Oil Class CF lubricating oil as per API classification is recommended. If this class of lubricating oil is not available, preferably use Class CD or CE lubricating oil.
For details on recommended lubricating oils, see page G-5, 8.
Lubricating Oil
Capacity
Oil Pan Depth
101 mm (3.98 in.) – 3.7 L (0.98 U.S.gals)
Oil Pan Depth
121 mm (4.76 in.) 3.6 L (0.95 U.S.gals) –
Weight (Dry) kg (lbs) 63.5 (139.7) 72.0 (158.7)
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SM-E2B SERIES, WSM PERFORMANCE CURVES
PERFORMANCE CURVES
■Z482-E2B
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■Z602-E2B (3200 min-1 (rpm) spec.)
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■Z602-E2B (3600 min-1 (rpm) spec.)
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Gross Intermittent B.H.P.
(8) Net Intermittent B.H.P.
(9) Net Intermittent B.S.F.C.
(10) Gross Torque
(11) Overload Torque
(12) Gross B.H.P.
(13) Overload B.H.P.
(14) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■D662-E2B
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■D722-E2B
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■D782-E2B
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Gross B.H.P.
(15) Overload B.H.P.
(16) Overload B.S.F.C.
KiSC issued 06, 2006 A

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SM-E2B SERIES, WSM PERFORMANCE CURVES
■D902-E2B (3200 min-1 (rpm) spec.)
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
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SM-E2B SERIES, WSM PERFORMANCE CURVES
■D902-E2B (3600 min-1 (rpm) spec.)
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Gross Intermittent B.H.P.
(8) Net Intermittent B.H.P.
(9) Net Intermittent B.S.F.C.
(10) Gross Torque
(11) Overload Torque
(12) Gross B.H.P.
(13) Overload B.H.P.
(14) Overload B.S.F.C.
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SM-E2B SERIES, WSM DIMENSIONS
DIMENSIONS
■Z482-E2B
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SM-E2B SERIES, WSM DIMENSIONS
■Z602-E2B
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SM-E2B SERIES, WSM DIMENSIONS
■D662-E2B, D722-E2B
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SM-E2B SERIES, WSM DIMENSIONS
■D782-E2B
KiSC issued 06, 2006 A