Yanmar 3JH4E - EPA Maintenance Requirements

EPA MAINTENANCE
REQUIREMENTS
To maintain optimum engine performance
and compliance with the Environmental
Protection Agency (EPA) Regulations for
Engines, it is essential that you follow the
Periodic Maintenance Schedule on page
57 and the Periodic Maintenance
Procedures on page 61.
EPA Requirements for USA and
Other Applicable Countries
The following are the requirements for the
EPA. Unless these requirements are met,
the exhaust gas emissions will not be within
the limits specified by the EPA.
See Conditions to Ensure Compliance with
EPA Emission Standards on page 55.
Clean or replace the air cleaner element if
the air intake restriction exceeds the
referenced specifications.
EPA Requirements
The EPA emission regulation is applicable
only in the USA and other countries that
have adapted the EPA requirements in part
or in whole. Determine and follow the
emission regulations in the country where
your engine will be operating to assist you in
specified compliance.
Conditions to Ensure
Compliance with EPA Emission
Standards
The 3JH4E, 4JH4AE, 4JH-TE and
4JH4-HTE are EPA-certified engines.
The following are the conditions that must be
met in order to ensure that the emissions
during operation meet the EPA standards.
The operating conditions should be as
follows:
• Ambient temperature: -20˚ to +40˚C
(-4˚ to +104˚F)
• Relative humidity: 80% or lower
• 3JH4E and 4JH4AE: Permissible value
for intake negative pressure: 4.0 kPa (400
mmAq) or lower
• 4JH4-TE and 4JH4-HTE: Permissible
value for intake negative pressure: 2.0
kPa (200 mmAq) or lower
• 3JH4E and 4JH4AE: Permissible value
for exhaust back pressure: 15.0 kPa
(1500 mmAq) or lower
• 4JH4-TE and 4JH4-HTE: Permissible
value for exhaust back pressure: 20.0 kPa
(2000 mmAq) or lower
The diesel fuel should be:
• ASTM D975 No. 1-D or No. 2-D, or
equivalent (minimum of cetane No. 45)
The lubricating oil should be:
• 3JH4E, 4JH4-TE and 4JH4-HTE: Type
API, Class CD or higher
• 4JH4AE: Type API, Class CH-4 only
Be sure to perform inspections as outlined
in Periodic Maintenance Procedures on
page 61 and keep a record of the results.
Pay particular attention to these important
points:
• Replacing the engine oil
• Replacing the engine oil filter
• Replacing the fuel filter
• Cleaning the intake silencer (air cleaner)
Note: Inspections are divided into two
sections in accordance with who is
responsible for performing the inspection:
the user or the maker.
PERIODIC MAINTENANCE
JH4 Series Operation Manual 55