Kubota U48-4, Workshop Manual

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GENERAL
U48-4,U55-4, WSM
G-3
[2] E3B ENGINE
[Ex. : Engine Model V2607-DI-E3B-XXXX]
While the exhaust emissions regulations in each country that have been implemented to date to prevent air
pollution are constantly changing, regulations governing off-road exhaust emissions are expected to be implemented
more quickly. The date that specific off-road exhaust emissions regulations will take effect depends on the output
category of the engine.
For some years now KUBOTA has been supplying regulation-compliant diesel engines in countries where
off-road exhaust emission regulations have been introduced. KUBOTA's E3B series of engines meet the next phase
of exhaust emission regulations. (See the table below.)
Whenever repairs or service is performed on a ###-E3B series engine, E3B engine replacements parts, which
are in the applicable E3B KUBOTA Parts List, must be used and the KUBOTA Operator's Manual and E3B Workshop
Manual must be used for maintenance. Use of incorrect replacement parts or replacement parts from other emission
level engines (for example : E2B engines), may result in emission levels out of compliance with the original E3B
design, EPA and/or other applicable regulations. Check the output category and emissions data on the emissions
label on the header cover of the engine. E3B engines have the suffix ET after the model name on the EPA label. E3B
is not marked on the engine.
RY9212001END0010US0
[3] CYLINDER NUMBER
KUBOTA diesel engines are numbered as indicated in the
figure.
Cylinders are numbered from the front cover (fan side) in the
order 1, 2, 3 and 4.
RY9212001END0011US0
Class (1) Engine Output Category EU Regulation
K 19 to/not including 37 kW STAGE IIIA
J 37 to/not including 75 kW STAGE IIIA
I 75 to/not including 130 kW STAGE IIIA
Class (2) Engine Output Category EPA Regulation
ET
Less than 19 kW Tier 4
19 to/not including 56 kW Interim Tier 4
56 to/not including 75 kW Tier 3
75 to/not including 130 kW Tier 3
(1) EU Regulation engine output classification
(2) "E3B engines" have the suffix ET after the model name on the EPA label.
"E3B" models meet Tier 3, Interim Tier4 or Tier4 regulations, depending on the
engine output category.
KiSC issued 03, 2010 A