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Introduction
TX,CALIFORNIA,ECWS,ISUZU -19-24FEB20-2/2
DX,EMISSIONS,PERFORM -19-12JAN18-1/1
MAINTENANCE RECOMMENDATION:
Some Isuzu Motors America LLC. off-road engines are certied by the United States Environmental Protection Agency (EPA) and California Air
Resource Board (CARB) to comply with smoke and gaseous emission standards prescribed by Federal laws at the time of maintenance.
The engine is certied if it has a special certication label. An Isuzu engine dealer can also inform if the engine is certied.
Efciency of emission control and engine performance depends on adherence to proper operation and maintenance recommendations and use of
recommended fuels and lubricating oils. It is recommended that major adjustments and repair be made by an authorized Isuzu engine dealer.
Various chemical fuel additives, which claim to reduce visible smoke, are available commercially. Although additives have been used by
individuals to solve some isolated smoke problems in the eld, they are not recommended for general use.
Federal smoke regulations require that engines be certied without smoke depressants.
The corrective step taken immediately on discovery of worn parts, which may affect emission levels, will help assure proper operation of emission
control systems. The use of genuine Isuzu parts recommended.
Suppliers of non-Isuzu parts must assure the owner that the use of such parts will not adversely affect emission levels.
Regular maintenance intervals, along with special emphasis on the following items, are necessary to keep exhaust emissions within acceptable
limit for the useful life of the engine.
Refer to the maintenance intervals. If the engine is operating under severe conditions, adjust the maintenance schedule accordingly. See an
authorized Isuzu engine dealer to help analyze the specic application, operating environment, and maintenance adjustments.
The following is an explanation of maintenance for emission-related components.
See the Maintenance Schedule for the specic interval for the following items.
FUEL INJECTION PUMP OR NOZZLES—Fuel injection pumps or nozzles are subject to tip wear as a result to fuel contamination. This damage
can cause an increase in fuel consumption, the engine to emit black smoke misre, or run rough. Inspect, test, and replace if necessary. Fuel
injection pumps can be tested by an authorized Isuzu engine dealer.
TURBOCHARGER—Check for any unusual sound or vibration in the turbocharger. Inspect inlet and exhaust piping and connections. Check
bearing condition and perform maintenance as described in the Maintenance Schedule.
Slow engine response and low power may indicate a need for adjustment or repair. An Isuzu engine dealer is equipped with the necessary
tools, personnel, and perform this service. Owner is encouraged to keep adequate maintenance records, but the absence of such, in and
of itself, will not invalidate the warranty.
The machine or equipment owner may perform routine maintenance, repairs, and other non-warranty work or have it done at any repair facility.
Such non-warranty work need not be performed at a designated warranty station in order for the warranty to remain in force.
CUSTOMER ASSISTANCE—EMISSION CONTROL SYSTEM WARRANTY:
Isuzu Motors America LLC. aims to ensure that the Emission Control Systems Warranty is properly administrated. In the event that the warranty
service under the Emission Control System Warranty is not upheld, call or write:
Isuzu Motors America LLC.
PowerTrain Division
46401 Commerce Center Drive Plymouth, MI 48170
Tel: 734-582-9470
Authorized dealers are recommended for major maintenance and repair work as they are staffed with trained personnel, proper tools, and are
aware of the latest maintenance methods and procedures. Owners and others who desire to perform their own work should purchase a Service
Manual and obtain current information from an Isuzu engine dealer.
Emissions Performance and Tampering
Operation and Maintenance
The engine, including the emissions control system,
shall be operated, used, and maintained in accordance
with the instructions provided in this manual to
maintain the emissions performance of the engine
within the requirements applicable to the engine's
category/certication.
Tampering
No deliberate tampering with or misuse of the engine
emissions control system shall take place; in particular
with regard to deactivating or not maintaining an exhaust
gas recirculation (EGR) or a DEF dosing system.
Tampering with an engine’s emissions control system
will void the European Union (EU) type approval and
applicable emissions-related warranties.
112321
PN=12
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