Which scheduled maintenance activities does EPA consider to be remanufacturing?
Remanufacturing, for the purposes of this program, is the removal and replacement – including requalifying – of all cylinder liners, either all in a single maintenance event or over a period of five (5) years or less. If your cylinder replacement/requalifying schedule takes longer than five years, EPA does not consider this to be remanufacturing under this rule. As used here, requalifying means to inspect a cylinder that may have been recently replaced due to a failure, to make sure it qualified for continued use. Even though an engine may be remanufactured during a rebuild event, not all rebuild events and not all maintenance events are considered to be remanufacturing. A rebuild may include extensive maintenance that increases the service life of the engine, however it will not be considered to be remanufacturing unless all of the cylinder liners are replaced, either at once or over a period of 5 years.
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