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An EMD engine is rebuilt (or “completely overhauled”)
through a series of steps designed to put the engine in like-new
operating condition to the maximum extent possible. When an EMD
engine is rebuilt, the rebuilding process is performed by EMD or
an EMD-authorized service center. EMD engines in a towboat
nearing the end of its useful life (and which has had the
procedures involved performed numerous times) or EMD engines
which have been removed from towboats due to a catastrophic
malfunction are likely candidates for the rebuilding process.
The goal of the rebuilding process is to bring each of an
engine’s component parts to EMD’s original dimensional
specifications for new parts.
The rebuilding process for a towboat engine requires the
removal of the engine from the towboat of which it is a part and
the removal of all of the moving and nonmoving components from
the engine as well. The engine’s crankcase and oil pan are
separated, and every part of the engine is carefully cleaned,
inspected using intense illumination, machined and treated with
special materials to restore the engine to a like-new operating
condition. The engine crankcase and oil pan are extensively
machined and welded, and numerous dimensional tests and checks
are performed to ensure that the engine is returned to a like-new
condition through the rebuilding process. In addition, a
reconditioned crankshaft and camshaft (with new camshaft bearings
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