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acceptable operating tolerances (as well as honing and cleaning
it) was about $100 during the years in issue. When a cylinder
liner needs to be replaced due to excessive wear, petitioners use
either new or used liners which are within acceptable operating
tolerances and which are similar in all material respects to the
liners removed from the towboat. During the years in issue, the
cost of such a used liner was about $600, and the cost of a new
cylinder liner was about $1,200.
In addition to the power packs, rocker arm assemblies, valve
bridges, fuel injectors, oil pumps, and water pumps are also
removed, disassembled, cleaned and inspected as part of the
procedures. As with power packs, to the extent possible, parts
within these assemblies and pumps are reused unless damage is
detected. The only parts of the rocker arm assemblies that are
always replaced with either new or used parts are the rocker arm
rollers and bushings (costing approximately $13 during the years
in issue). In a similar manner to rocker arm assemblies, valve
bridges are disassembled, cleaned, and inspected and reused if no
irreparable damage is detected. The valve bridge parts that are
routinely replaced are the valve bridge lash adjusters (costing
approximately $8 per valve bridge during the years in issue).
Fuel injectors are normally exchanged by petitioners with outside
contractors for reconditioned injectors at a cost of about $92
per injector.
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Last modified: May 25, 2011