General information on the overhaul of engines Very different factors have an influence on the life expectancy of an engine. For this reason it is not poss- ible to give certain predetermined numbers of operating hours for basic overhauls. 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 in the Operator’s manual D Selection and quality of lube oil, fuel and coolant as specified in the publication “Fuels, Lubricants, Coolants for MAN Diesel Engines” 13