Nanni 5.280HE Instruction manual

60300075
Mis à jour 01/2013
Diesel Marine Engine
5.280HE—4.200HE—4.220HE—4.195HE
WORKSHOP MANUAL

TO THE READER
This Workshop Manual has been prepared to provide servicing personnel with
information on the mechanism, service and maintenance of KUBOTA Diesel Engine 03-
M Series. It is divided into two parts, “Mechanism” and “Servicing” for each section.
QMechanism
Information on the Features and New Mechanisms are described. This information
should be understood before proceeding with troubleshooting, disassembling and
servicing.
QServicing
The heading “General” includes general precautions, check and maintenance and
special tools. There are troubleshooting, 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, illustration being used, have not been
specified as one model.
July 2001
© KUBOTA Corporation 2001
KiSC issued 08, 2012 A

1
SAFETY INSTRUCTIONS
03-M Series, WSM
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.
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.
QIMPORTANT : Indicates that equipment or property damage could result if instructions are not
followed.
QNOTE : Gives helpful information.
KiSC issued 08, 2012 A

2
03-M 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.
KiSC issued 08, 2012 A

3
SAFETY INSTRUCTIONS
03-M Series, WSM
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.
KiSC issued 08, 2012 A

4
03-M 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
W10275180
Model D1503-M D1703-M D1803-M
Number of Cylinders 3
Type Vertical, Water-cooled, 4 cycle diesel engine
Bore ×Stroke 83 ×92.4 mm (3.27 ×3.64 in.) 87 ×92.4 mm (3.43 ×3.64 in.) 87 ×102.4 mm (3.43 ×4.03 in.)
Total Displacement 1499 cm3(91.47 cu.in.) 1647 cm3(100.51 cu.in.) 1826 cm3(111.43 cu.in.)
ISO Net Cont. 20.4 kW / 2800 min-1 (rpm)
(27.4 HP / 2800 min-1 (rpm))
22.4 kW / 2800 min-1 (rpm)
(30.0 HP / 2800 min-1 (rpm))
23.3 kW / 2600 min-1 (rpm)
(31.2 HP / 2600 min-1 (rpm))
ISO/SAE Net Intermittent 23.5 kW / 2800 min-1 (rpm)
(31.5 HP / 2800 min-1 (rpm))
25.7 kW / 2800 min-1 (rpm)
(34.5 HP / 2800 min-1 (rpm))
26.9 kW / 2600 min-1 (rpm)
(36.1 HP / 2600 min-1 (rpm))
SAE Gross Intermittent 24.9 kW / 2800 min-1 (rpm)
(33.4 HP / 2800 min-1 (rpm))
27.4 kW / 2800 min-1 (rpm)
(36.7 HP / 2800 min-1 (rpm))
28.4 kW / 2600 min-1 (rpm)
(38.1 HP / 2600 min-1 (rpm))
Maximum Bare Speed 3000 min-1 (rpm) 2800 min-1 (rpm)
Minimum Bore Idling Speed 750 to 850 min-1 (rpm)
Combustion Chamber Spherical Type (E-TVCS)
Fuel Injection Pump Bosch Type Mini Pump
Governor All speed mechanical governor
Direction of Rotation Counter-Clockwise (viewed from flywheel side)
Injection Nozzle Bosch Throttle Type Mini Nozzle (OPD)
Injection Timing 0.314 rad (18 °) before T.D.C.
Firing Order 1-2-3
Injection Pressure 13.73 MPa (140 kgf/cm2, 1991 psi)
Compression Ratio 23 : 1 22.6 : 1 23.8 : 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
Starting System Electric Starting with Starter
Starting Motor 12 V, 1.4 kW 12 V, 2.0 kW
Starting Support Device By Glow Plug in Combustion Chamber
Battery 12 V, 60 AH, equivalent 12 V, 88 AH, equivalent
Charging Alternator 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 S-17, 20.
Lubricating Oil
Capacity
Oil Pan Depth
90 mm (3.54 in.) 5.6 L (1.48 U.S.gals)
Oil Pan Depth
124 mm (4.88 in.) 7.0 L (1.85 U.S.gals)
Weight (Dry) 148 kg (326 lbs) 151 kg (333 lbs)
KiSC issued 08, 2012 A

5
SPECIFICATIONS
03-M Series, WSM
* The specification described above is of the standard engine of each model.
* Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW
W10309670
Model V2203-M V2403-M
Number of Cylinders 4
Type Vertical, Water-cooled, 4 cycle diesel engine
Bore ×Stroke 87 ×92.4 mm (3.43 ×3.64 in.) 87 ×102.4 mm (3.43 ×4.03 in.)
Total Displacement 2197 cm3(134.07 cu.in.) 2434 cm3(148.53 cu.in.)
ISO Net Cont. 29.8 kW / 2800 min-1 (rpm)
(40.0 HP / 2800 min-1 (rpm))
31.0 kW / 2800 min-1 (rpm)
(41.6 HP / 2600 min-1 (rpm))
ISO/SAE Net Intermittent 34.3 kW / 2800 min-1 (rpm)
(46.0 HP / 2800 min-1 (rpm))
35.8 kW / 2600 min-1 (rpm)
(48.0 HP / 2600 min-1 (rpm))
SAE Gross Intermittent 36.4 kW / 2800 min-1 (rpm)
(48.8 HP / 2800 min-1 (rpm))
38.0 kW / 2600 min-1 (rpm)
(51.0 HP / 2600 min-1 (rpm))
Maximum Bare Speed 3000 min-1 (rpm) 2800 min-1 (rpm)
Minimum Bore Idling Speed 750 to 850 min-1 (rpm)
Combustion Chamber Spherical Type (E-TVCS)
Fuel Injection Pump Bosch Type Mini Pump
Governor All speed mechanical governor
Direction of Rotation Counter-Clockwise (viewed from flywheel side)
Injection Nozzle Bosch Throttle Type Mini Nozzle (OPD)
Injection Timing 0.314 rad (18 °) before T.D.C.
Firing Order 1-3-4-2
Injection Pressure 13.73 MPa (140 kgf/cm2, 1991 psi)
Compression Ratio 22.6 : 1 23.8 : 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
Starting System Electric Starting with Starter
Starting Motor 12 V, 1.4 kW 12 V, 2.0 kW
Starting Support Device By Glow Plug in Combustion Chamber
Battery 12 V, 88 AH, equivalent 12 V, 92 AH, equivalent
Charging Alternator 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 S-17, 20.
Lubricating Oil
Capacity
Oil Pan Depth
90 mm (3.54 in.) 7.6 L (2.01 U.S.gals)
Oil Pan Depth
124 mm (4.88 in.) 9.5 L (2.51 U.S.gals)
Weight (Dry) 180 kg (397 lbs) 184 kg (406 lbs)
KiSC issued 08, 2012 A

6
03-M Series, WSM DIMENSIONS
DIMENSIONS
KiSC issued 08, 2012 A

7
DIMENSIONS
03-M Series, WSM
KiSC issued 08, 2012 A

CONTENTS
MECHANISM
1. ENGINE BODY ............................................................................................... M-1
[1] HOLLOW CORE ....................................................................................... M-1
[2] PISTON...................................................................................................... M-1
[3] BUILT-IN DYNAMIC BALANCER (BALANCER MODEL ONLY) ......... M-1
[4] HALF-FLOATING HEAD COVER ............................................................ M-2
2. COOLING SYSTEM........................................................................................ M-3
[1] BOTTOM BYPASS SYSTEM................................................................... M-3
3. FUEL SYSTEM ............................................................................................... M-4
[1] GOVERNOR .............................................................................................. M-4
For not above-mentioned engine mechanism information, please refer ENGINE MECHANISM
WSM (97897-01870).
NOTICE
KiSC issued 08, 2012 A