General information on the overhaul of engines
8
Very different factors have an influence on the life expectancy of an engine. For this reason it is not pos-
sible to give certain predetermined numbers of operating hours for basic overhauls.
Regular interim inspections and overhauls frequently carried out on large engines (e.g. on those from MAN
Augsburg) are generally not necessary on MAN Diesel engines from the MAN Nuremberg works.
In our opinion, opening an engine or carrying out a basic overhaul is not appropriate as long as the engine
achieves good compression values and the following operating values measured and recorded and have
not changed significantly since commissioning:
D Charge-air pressure
D Exhaust-gas temperature
D Coolant and lube-oil temperature
D Oil pressure and oil consumption
D Formation of smoke
The following criteria have a major influence on the life expectancy of an engine:
D Correct output setting according to the type of operation.
D Expert installation in accordance with the installation instructions.
D Inspection of the installation by authorized personnel.
D Regular maintenance as per maintenance plan
D Selection and quality of lube oil, fuel and coolant as specified in the publication
”Fuels, Lubricants, Coolants for Industrial and Marine Diesel Engines”.
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