Hino Motors J08E-VC, Руководство по ремонту

Страница: 8 / 339

GENERAL INTRODUCTION (ENGINE) GN01–4
CLEAN AIR ACT
1. Heavy-duty engine rebuilding practices.
§ 86.004-40
• The provisions of this section are applicable to heavy-duty engines subject to model year 2004 or later standards and are
applicable to the process of engine rebuilding (or rebuilding a portion of an engine or engine system). The process of
engine rebuilding generally includes disassembly, replacement of multiple parts due to wear, and reassembly, and also
may include the removal of the engine from the vehicle and other acts associated with rebuilding an engine. Any deviation
from the provisions contained in this section is a prohibited act under section 203(a) (3) of the Clean Air Act (42 U.S.C.
7522(a) (3)).
(1) When rebuilding an engine, portions of an engine, or an engine system, there must be a reasonable technical basis for
knowing that the resultant engine is equivalent, from an emissions standpoint, to a certified configuration (i.e., tolerances,
calibrations, specifications) and the model year(s) of the resulting engine configuration must be identified. A reasonable
basis would exist if:
a.
Parts installed, whether the parts are new, used, or rebuilt, are such that a person familiar with the design and func-
tion of motor vehicle engines would reasonably believe that the parts perform the same function with respect to emis-
sions control as the original parts; and
b. Any parameter adjustment or design element change is made only:

In accordance with the original engine manufacturer's instructions; or

Where data or other reasonable technical basis exists that such parameter adjustment or design element change,
when performed on the engine or similar engines, is not expected to adversely affect in-use emissions.
(2) When an engine is being rebuilt and remains installed or is reinstalled in the same vehicle, it must be rebuilt to a configu-
ration of the same or later model year as the original engine. When an engine is being replaced, the replacement engine
must be an engine of (or rebuilt to) a configuration of the same or later model year as the original engine.
(3) At time of rebuild, emissions-related codes or signals from on-board monitoring systems may not be erased or reset with-
out diagnosing and responding appropriately to the diagnostic codes, regardless of whether the systems are installed to
satisfy requirements in § 86.004-25 or for other reasons and regardless of form or interface. Diagnostic systems must be
free of all such codes when the rebuilt engine is returned to service. Such signals may not be rendered inoperative during
the rebuilding process.
(4) When conducting a rebuild without removing the engine from the vehicle, or during the installation of a rebuilt engine, all
critical emissions-related components listed in § 86.004-25(2) not otherwise addressed by paragraphs (1) through (3) of
this section must be checked and cleaned, adjusted, repaired, or replaced as necessary, following manufacturer recom-
mended practices.
(5) Records shall be kept by parties conducting activities included in paragraphs (1) through (4) of this section. The records
shall include at minimum the mileage and/or hours at time of rebuild, a listing of work performed on the engine and emis-
sions-related control components including a listing of parts and components used, engine parameter adjustments, emis-
sions-related codes or signals responded to and reset, and work performed under paragraph (4) of this section.
a.
Parties may keep records in whatever format or system they choose as long as the records are understandable to an
EPA enforcement officer or can be otherwise provided to an EPA enforcement officer in an understandable format
when requested.
b. Parties are not required to keep records of information that is not reasonably available through normal business prac-
tices including information on activities not conducted by themselves or information that they cannot reasonably
access.
c. Parties may keep records of their rebuilding practices for an engine family rather than on each individual engine
rebuilt in cases where those rebuild practices are followed routinely.
d. Records must be kept for a minimum of two years after the engine is rebuilt.
2. Maintenance instructions.
§ 86.010-38
(1) For each new diesel-fueled engine subject to the standards prescribed in § 86.007-11, as applicable, the manufacturer
shall furnish or cause to be furnished to the ultimate purchaser a statement that
“This engine must be operated only with ultra low-sulfur diesel fuel (meeting EPA specifications for highway die-
sel fuel, including a 15 ppm sulfur cap).”