Kubota EA330-E4 Series Instruction manual

WORKSHOP MANUAL
DIESEL ENGINE
EA330-E4 SERIES
KiSC issued 05, 2015 A

TO THE READER
This Workshop Manual tells the servicing personnel about the mechanism, servicing and
maintenance of the EA330-E4. It contains 4 parts: "Information", "General", "Mechanism" and
"Servicing".
Information
This section primarily contains information below.
• Safety First
• Specification
• Performance Curve
• Dimension
General
This section primarily contains information below.
• Engine Identification
• General Precautions
• Maintenance Check List
• Check and Maintenance
• Special Tools
Mechanism
This section contains information on the structure and the function of the unit. Before you continue
with the subsequent sections, make sure that you read this section.
Refer to the latest version of Workshop Manual (Code No. 9Y021-01870) for the diesel engine
mechanism that this workshop manual does not include.
Servicing
This section primarily contains information below.
• Troubleshooting
• Servicing Specifications
• Tightening Torques
• Checking, Disassembling and Servicing
All illustrations, photographs and specifications contained in this manual are of the newest
information available at the time of publication.
KUBOTA reserves the right to change all information at any time without notice.
Since this manual includes many models, information or illustrations and photographs can show
more than one model.
December, 2013
© KUBOTA Corporation 2013
KiSC issued 05, 2015 A

Record of Revisions
For pdf, use search function {Search word} to find all the revised locations.
Last digit
of the
Code No.
Issue
month Main Revised Point and Corrective Measures {Search word} Reference
Page
12015.05 Change the Adjusting Injection Timing to Replacing Injection pump. 1-S19
KiSC issued 05, 2015 A

I INFORMATION
KiSC issued 05, 2015 A

CONTENTS
1. SAFETY FIRST .............................................................................................................................. I-1
2. SPECIFICATIONS.......................................................................................................................... I-4
3. PERFORMANCE CURVES............................................................................................................I-5
4. DIMENSIONS ................................................................................................................................. I-6
INFORMATION
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-1
1. SAFETY FIRST
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BEFORE YOU START SERVICE
• 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 stable and level ground.
• Let the temperature of the engine decrease before
you start a job.
• Stop the engine, then remove the key.
• Disconnect the battery negative cable.
• Hang a "DO NOT OPERATE" tag in the operator
station.
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START SAFELY
• Do not do the procedures below when you start the
engine.
– short across starter terminals
– bypass the safety start switch
• Do not make unauthorized modifications to the
engine. This can cause damage and decrease the
engine life.
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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 try 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, could result in minor or moderate
injury.
IMPORTANT
• Indicates that equipment or property damage could result if instructions are not followed.
NOTE
• Gives helpful information.
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-2
OPERATE SAFELY
• Do not use the machine after you consume alcohol
or medication or when you are tired.
• Put on applicable clothing and safety equipment.
• Use applicable tools only. Do not use alternative
tools or parts.
• When 2 or more persons do servicing, make sure
that you do it safely.
• Do not touch the hot parts or parts that turn when the
engine operates.
• Do not remove the radiator cap when the engine
operates, or immediately after it stops. If not, hot
water can spout out from the radiator. Only remove
the radiator cap when it is at a sufficiently low
temperature to touch with bare hands. Slowly loosen
the cap to release the pressure before you remove it
fully.
• Released fluid (fuel or hydraulic oil) under pressure
can cause damage to the skin and cause serious
injury. Release the pressure before you disconnect
hydraulic or fuel lines. Tighten all connections before
you apply the pressure.
• Do not open a fuel system under high pressure.
The fluid under high pressure that stays in fuel lines
can cause serious injury. Do not disconnect or repair
the fuel lines, sensors, or any other components
between the fuel pump and injectors on engines with
a common rail fuel system under high pressure.
• Put on an applicable ear protective device (earmuffs
or earplugs) to prevent injury against loud noises.
• Be careful about electric shock. The engine
generates a high voltage of more than DC100 V in
the ECU and is applied to the injector.
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PREVENT A FIRE
• Fuel is very flammable and explosive under some
conditions. Do not smoke or let flames or sparks in
your work area.
• To prevent sparks from an accidental short circuit,
always disconnect the battery negative cable first
and connect it last.
• The battery gas can cause an explosion. Keep the
sparks and open flame away from the top of battery,
especially when you charge the battery.
• Make sure that you do not spill fuel on the engine.
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KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-3
KEEP A GOOD AIRFLOW IN THE WORK AREA
• If the engine is in operation, make sure that the area
has good airflow. Do not operate the engine in a
closed area. The exhaust gas contains poisonous
carbon monoxide.
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DISCARD FLUIDS CORRECTLY
• Do not discard fluids on the ground, down the drain,
into a stream, pond, or lake. Obey related
environmental protection regulations when you
discard oil, fuel, coolant, electrolyte and other
dangerous waste.
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PREVENT ACID BURNS
• Keep electrolyte away from your eyes, hands and
clothing. Sulfuric acid in battery electrolyte is
poisonous and it can burn your skin and clothing and
cause blindness. If you spill electrolyte on yourself,
clean yourself with water, and get medical aid
immediately.
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PREPARE FOR EMERGENCIES
• Keep a first aid kit and fire extinguisher ready at all
times.
• Keep the emergency contact telephone numbers
near your telephone at all times.
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KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-4
2. SPECIFICATIONS
*Conversion Formula: HP=0.746 kW, PS=0.7355 kW
9Y1211018INI0001US0
Model EA330-E4-NB1 EA330-E4-NB1-APU-1 EA330-E4-NB1-SCS-1
Number of Cylinder 1
Engine Type Horizontal, water-cooled, 4-cycle diesel engine
Bore × Stroke 77.0 mm × 70.0 mm (3.03 in × 2.76 in.)
Displacement 325 cc (19.8 cu.in.)
Brake Horsepower
SAE Intermittent 5.15 kW (6.91 HP) / 3000 min-1 (rpm) 5.76 kW (7.72 HP) /
3000 min-1 (rpm)
SAE Continuous 4.4 kW (5.9 HP) / 3000 min-1 (rpm) 4.8 kW (6.4 HP) /
3000 min-1 (rpm)
Maximum Bare Speed 3220 min-1 (rpm)
Minimum Bare Idling Speed 1300 min-1 (rpm)
Combustion Chamber Spherical type (TVCS)
Fuel Injection Pump Bosch K type mini pump
Governor Mechanical all speed governor
Direction of Rotation Counter-clockwise (Viewed from flywheel side)
Injection Nozzle DN-PD Mini Nozzle
Injection Timing 0.445 rad (25.5 °) Before T.D.C.
Injection Pressure 13.73 MPa (140.0 kgf/cm2, 1991 psi)
Compression Ratio 24
Lubricating System Forced Lubrication by Trochoid Pump
Cooling System Radiator –
Starting System Electric Starting with Starter
Starting Motor 12 V, 0.8 kW
Starting Support Device By glow plug in combustion chamber
EGR None
Battery 12V, 28 AH equivalent
Charging Alternator 12V, 60W
Fuel No. 2-D S500 or S15, See page G-6
Lubricating Oil Class CF lubricating oil as per API classification is recommended.
For details on recommended lubricating oils. (see page G-6)
Lubricating Oil Capacity 1.3 L (0.34 U.S.gals)
Coolant Capacity 1.2 L (0.32 U.S.gals) –
Fuel Tank Capacity 4.8 L (1.3 U.S.gals) –
Weight (Dry) 54.0 kg (119 lbs) 43.0 kg (94.8 lbs) 39.0 kg (86.0 lbs)
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-5
3. PERFORMANCE CURVES
NOTE
• Each performance curves obtained in accordance with SAE J816b are corrected to 760 mm Hg
(29.9 in.Hg), 20 °C (68 °F) 60 % humidity.
9Y1211018INI0002US0
(1) Intermittent Torque (2) Brake Horse Power
(Intermittent)
(3) Fuel Consumption (4) Brake Horse Power
(Continuous)
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-6
4. DIMENSIONS
EA330-E4-NB1
9Y1211018INI0003US0
A311.5 mm (12.26 in.)
B138 mm (5.43 in.)
C173.5 mm (6.831 in.)
D326 mm dia. (12.8 in. dia.)
E64 mm (2.5 in.)
F46 mm (1.8 in.)
G567.7 mm (22.35 in.)
H335 mm (13.2 in.)
I232.7 mm (9.161 in.)
J457 mm (18.0 in.)
K326 mm (12.8 in.)
L125 mm (4.92 in.)
M451 mm (17.8 in.)
N160 mm (6.30 in.)
O125 mm (4.92 in.)
P317 mm (12.5 in.)
Q163 mm (6.42 in.)
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-7
EA330-E4-NB1-APU-1
9Y1211018INI0004US0
A303.5 mm (11.95 in.)
B130 mm (5.12 in.)
C173.5 mm (6.831 in.)
D64 mm (2.5 in.)
E46 mm (1.8 in.)
F485 mm (19.1 in.)
G317 mm (12.5 in.)
H168 mm (6.61 in.)
I400 mm (15.7 in.)
J304 mm (12.0 in.)
K125 mm (4.92 in.)
L429 mm (16.9 in.)
M160 mm (6.30 in.)
N125 mm (4.92 in.)
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-8
EA330-E4-NB1-SCS-1
9Y1211018INI0005US0
A303.5 mm (11.95 in.)
B130 mm (5.12 in.)
C173.5 mm (6.831 in.)
D64 mm (2.5 in.)
E46 mm (1.8 in.)
F485 mm (19.1 in.)
G317 mm (12.5 in.)
H168 mm (6.61 in.)
I221 mm (8.70 in.)
J216.8 mm (8.535 in.)
K125 mm (4.92 in.)
L341.8 mm (13.46 in.)
M160 mm (6.30 in.)
N125 mm (4.92 in.)
KiSC issued 05, 2015 A

INFORMATION
EA330-E4, WSM
I-9
Pulley Shaft (EA330-E4-NB1, EA330-E4-NB1-APU-1, EA330-E4-NB1-SCS-1)
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V-Pulley
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Flywheel
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No. 19501-8451-0
A9.525 to 9.575 mm (0.3750 to 0.3769 in.)
B36.487 to 36.512 mm dia.
(1.4365 to 1.4374 in. dia.)
C88.9 mm (3.50 in.)
D66.60 to 66.90 mm (2.622 to 2.633 in.)
E3 Through holes-9.0 mm dia. (0.35 in. dia.)
F128.9 mm (5.075 in.)
G116 mm dia. (4.57 in. dia.)
H138 mm dia. (5.43 in. dia.)
(1) Key
No. 19704-8401-0
A130 mm dia. (5.12 in. dia.)
B53 mm (2.1 in.)
C44 mm (1.7 in.)
D10 mm (0.39 in.)
A3 Screw holes - Screw dia. size 8.0 mm (0.31 in.)
B116 mm dia. (4.57 in. dia.)
C97.000 to 97.035 mm dia.
(3.8189 to 3.8202 in. dia.)
D16.8 to 17.2 mm (0.662 to 0.677 in.)
KiSC issued 05, 2015 A

G GENERAL
KiSC issued 05, 2015 A

CONTENTS
1. ENGINE IDENTIFICATION .......................................................................................................... G-1
[1] MODEL NAME AND ENGINE SERIAL NUMBER.................................................................. G-1
[2] E4 ENGINE ............................................................................................................................ G-3
2. GENERAL PRECAUTIONS.......................................................................................................... G-4
3. MAINTENANCE CHECK LIST ..................................................................................................... G-5
4. CHECK AND MAINTENANCE ..................................................................................................... G-7
[1] DAILY CHECK LIST ............................................................................................................... G-7
[2] CHECK POINT OF EVERY 50 HOURS ................................................................................. G-8
[3] CHECK POINT OF EVERY 100 HOURS ............................................................................... G-8
5. SPECIAL TOOLS ....................................................................................................................... G-10
GENERAL
KiSC issued 05, 2015 A

GENERAL
EA330-E4, WSM
G-1
1. ENGINE IDENTIFICATION
[1] MODEL NAME AND ENGINE SERIAL NUMBER
When contacting the manufacture, 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 name.
It indicates month and year of manufacture as follows.
Engine Series
Production Year
(To be continued)
Number or
Alphabet Series Number or Alphabet Series
1 05 (include: WG) 7 03
2V3807
3 08 A EA, RK
4 SM (include: WG) B 03 (KET
Production)
5Air Cooled
Gasoline CV3, 07 (KEW Production)
6GZ, OC, AC, EA,
E
Alphabet or
Number Year Alphabet or Number Year
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 2010 R 2024
B 2011 S 2025
C 2012 T 2026
D 2013 V 2027
E 2014
(1) Engine Model
(2) Serial Number
(3) Emission Label
(4) Engine Label
KiSC issued 05, 2015 A

GENERAL
EA330-E4, WSM
G-2
(Continued)
Production Month and Lot Number
* Alphabetical letters "I" and "O" are not used.
e.g. EA330
(a)
- 6
(b)
D
(c)
B
(d)
A001
(e)
9Y1211018GEG0001US0
Month Engine Lot Number
January A0001 ~ 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 ~
(a) EA330: Engine Model Name
(b) 6: Engine Series (EA series)
(c) D: Production Year (2013)
(d) B: Production Month (January)
(e) A001: Lot Number: (0001 ~ 9999 or A001 ~ Z999)
KiSC issued 05, 2015 A

GENERAL
EA330-E4, WSM
G-3
[2] E4 ENGINE
[Example: Engine Model Name EA330-E4-XXXX]
The emission controls previously implemented in various countries to prevent air pollution will be stepped up as
Nonroad Emission Standards continue to change. The timing or applicable date of the specific Nonroad Emission
regulations depends on the engine output classification.
Over the past several years, KUBOTA has been supplying diesel engines that comply with regulations in the
respective countries affected by Nonroad Emission regulations. For KUBOTA Engines, E4 will be the designation that
identifies engine models affected by the next emission phase (See the table below).
When servicing or repairing ###-E4 series engines, use only replacement parts for that specific E4 engine,
designated by the appropriate E4 KUBOTA Parts List and perform all maintenance services listed in the appropriate
KUBOTA Operator's Manual or in the appropriate E4 KUBOTA Workshop Manual. Use of incorrect replacement parts
or replacement parts from other emission level engines (for example: E3 engines), may result in emission levels out
of compliance with the original E4 design and EPA or other applicable regulations. Please refer to the emission label
located on the engine head cover to identify Output classification and Emission Control Information. E4 engines are
identified with "EF" at the end of the Model designation, on the US EPA label. Please note: E4 is not marked on the
engine.
9Y1211018GEG0002US0
Category (1) Engine output classification EU regulation
K From 19 to less than 37 kW STAGE IIIA
P From 37 to less than 56 kW STAGE IIIB
N From 56 to less than 75 kW STAGE IIIB
M From 75 to less than 130 kW STAGE IIIB
Category (2) Engine output classification EPA regulation
EF
Less than 19kW Tier 4
From 19 to less than 56 kW Interim Tier 4
From 56 to less than 75 kW Interim Tier 4
From 75 to less than 130 kW Interim Tier 4
(1) EU regulation engine output classification category
(2) "E4" engines are identified with "EF" at the end of the Model designation, on
the US EPA label.
"E4" designates some Interim Tier 4 / Tier 4 models, depending on engine
output classification.
KiSC issued 05, 2015 A

GENERAL
EA330-E4, WSM
G-4
2. GENERAL PRECAUTIONS
• When you disassemble, carefully put the parts in a clean area
to make it easy to find the parts. You must install the screws,
bolts and nuts in their initial position to prevent the reassembly
errors.
• When it is necessary to use special tools, use KUBOTA special
tools. Refer to the drawings when you make special tools that
you do not use frequently.
• Before you disassemble or repair machine, make sure that you
always disconnect the ground cable from the battery first.
• Remove oil and dirt from parts before you measure.
• Use only KUBOTA genuine parts for replacement to keep the
machine performance and to make sure of safety.
• You must replace the gaskets and O-rings when you assemble
again. Apply grease (1) to new O-rings or oil seals before you
assemble.
• When you assemble the external or internal snap rings, make
sure that the sharp edge (3) faces against the direction from
which force (2) is applied.
• Make sure that you try to operate the engine after you repair or
assemble it. Do not try to give a heavy load immediately, if not,
you can cause serious damage to the engine.
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(1) Grease
(2) Force
(3) Sharp Edge
(A) External Snap Ring
(B) Internal Snap Ring
KiSC issued 05, 2015 A