ISUZU ENGINE AFTER SERVICE
2
ISUZU GENUINE PARTS
The Isuzu genuine parts are identical with those of used in the
engine production, and accordingly, they are warranted by Isuzu
Motors Limited.
The Isuzu genuine parts are supplied by the Isuzu distributors or
the authorized parts suppliers. Please designate "Isuzu Genuine
Parts" when you need engine parts.
EMISSION-RELATED INSTALLATION INSTRUCTIONS (REF)
Failing to follow these instructions when installing a certified engine in a piece of nonroad equipment
violates Federal Law (40 CFR1068.105(B)), subject to fines or other penalties as described in the clean air
act.
Installation of Nonroad Engines into Equipment
To ensure engines operate under the certified configurations, Isuzu has established defined application
requirements when installing any certified engine into a piece of equipment. The instructions outlined below
are included in our certification process and any failure to comply will be considered tampering.
Isuzu certifies engines to operate under variable speed or constant speed conditions. Engines certified as
constant speed are prohibited from installation into variable speed applications. The emission control
information label will identify an engine certified as constant speed.
Allowable Air Intake Restriction and Exhaust Back Pressure
Resistance to intake airflow and exhaust gas flow is generated in the intake and exhaust systems.
Exceeding the limitations will affect the operation of an engine and its certified configuration. Refer to the
installation requirements and limitations of the Isuzu C series Application Manual for the engine being
equipped with these systems.
Allowable Air Intake Restriction
Allowable Exhaust Back Pressure
Engine model
Allowable air intake restriction
kPa (mmAq)
Initial upper limit
Upper limit for air cleaner replacement
All models
2.94 (300)
6.23 (635)
Engine model
Allowable exhaust back pressure
kPa (mmAq)
Initial upper limit
Upper limit for exhaust system cleaning
3CH1, 3CJ1
9.81 (1000)
11.77 (1200)
3CE1
12.75 (1300)
15.30 (1560)
TNV_OperationManual_T4(under 19kW).book Page 2 Wednesday, June 17, 2015 11:23 AM