Kubota — Service Procedure

A Kubota service procedure — check it applies to your exact model before use.

Procedure

5.
SPECIAL TOOLS.......................................................................................... G-32
KiSC issued 05, 2008 A
G-1
03-E2B SERIES, WSM
G GENERAL
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.
Q 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
W1010477
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 Name and Serial
Number
KiSC issued 05, 2008 A
G-2
03-E2B SERIES, WSM
G GENERAL
• Month of manufacture
e.g. D1703-4A0001
“4” indicates 2004 and “A” indicates January.
So, 4A indicates that the engine was manufactured in January,
2004.
W1011076
[2]
E2B ENGINE
[ex. Model Name D1703-E2B-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 supplying the diesel engines conforming to the emission regulations in respective 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 E2B as a new model name for the engines conforming Tier 2 / Phase 2
regulations.
In the after-sale services for 03-E2B series engines, only use the dedicated parts for E2B models and carry out the
maintenance services accordingly.
[3]
CYLINDER NUMBER
The cylinder numbers of KUBOTA diesel engine are designated
as shown in the figure.
The sequence of cylinder numbers is given as No.1, No.2, No.3
and No.4 starting from the gear case side.
W1011077
Month
Engine Serial Number
0001 ~ 9999
10000 ~
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 ~
KiSC issued 05, 2008 A
G-3
03-E2B SERIES, WSM
G GENERAL
2. GENERAL PRECAUTIONS
• During disassembly, carefully arrange removed parts in a clean
area to prevent confusion later. Screws, bolts and nuts should be
replaced in their original position to prevent reassembly errors.
• When special tools are required, use KUBOTA genuine special
tools. Special tools which are not frequently used should be
made according to the drawings provided.
• Before disassembling or servicing live wires, make sure to
always disconnect the grounding cable from the battery first.
• Remove oil and dirt from parts before measuring.
• Use only KUBOTA genuine parts for parts replacement to
maintain engine performance and to ensure safety.
• Gaskets and O-rings must be replaced during reassembly.
Apply grease to new O-rings or oil seals before assembling.
• When reassembling external or internal snap rings, position them
so that the sharp edge faces against the direction from which
force is applied.
• Be sure to perform run-in the serviced or reassembled engine.
Do not attempt to give heavy load at once, or serious damage
may result to the engine.
W1011734
(1) Grease
(2) Force
(3) Place the Sharp Edge against the
Direction of Force
(A) External Snap Ring
(B) Internal Snap Ring
KiSC issued 05, 2008 A
G-4
03-E2B SERIES, WSM
G GENERAL
3. MAINTENANCE CHECK LIST
To maintain long-lasting and safe engine performance, make it a rule to carry out regular inspections by following
the table below.
+ Change engine oil and replace oil filter cartridge after the first 50 hours of operation.
* The items listed above (* marked) are registered as emission related critical parts by KUBOTA in the U.S. EPA
nonroad emission regulation. As the engine owner, you are responsible for the performance of the required
maintenance on the engine according to the above instruction.
W1029462
Item
Service Interval
Every
50
hrs
100
hrs
150
hrs
200
hrs
400
hrs
500
hrs
1 or 2
months
1
year
800
hrs
1500
hrs
3000
hrs
2
years
* Checking fuel hoses and clamp bands
,
Changing engine oil
(depending on the oil pan)
(1) Oil pan depth
(90 mm, 3.54 in.)
+
,
(2) Oil pan depth
(124 mm, 4.88 in.)
+
,
*Cleaning air cleaner element
(replace the element after 6-times cleanings)
,
Cleaning fuel filter (Element type)
,
Checking battery electrolyte level
,
Checking fan belt tension and damage
,
Replacing oil filter cartridge
(1) Oil pan depth
(90 mm, 3.54 in.)
+
,
(2) Oil pan depth
(124 mm, 4.88 in.)
+
,
Checking radiator hoses and clamp bands
,
* Checking intake air line
,
* Replacing fuel filter
,
Cleaning water jacket and radiator interior
,
Replacing fan belt
,
Recharging battery
,
* Replacing air cleaner element
,
Checking valve clearance
,
* Checking injection nozzle pressure
,
* Checking turbocharger
,
* Checking injection timing
,
* Checking injection pump
,
* Replacing intake air line
,
Replacing battery
,
Replacing radiator hoses and clamp bands
,
* Replacing fuel hoses and clamps
,
Changing radiator coolant (L.L.C.)
,
KiSC issued 05, 2008 A
G-5
03-E2B SERIES, WSM
G GENERAL
CAUTION
• When changing or inspecting, be sure to level and stop the engine.
Q NOTE
Lubricating Oil
With the emission control now in effect, the CF-4 and CG-4 lubricating oils have been developed for use of a low-
sulfur fuel on-road vehicle engines. When an off-road vehicle engine runs on a high-sulfur fuel, it is advisable to
employ the CF, CD or CE lubricating oil with a hig

Source: manual:01-kubota-03e-series-wsm-manual-enu.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.