General notes on engine overhaul
15
The service life of an engine is influenced by very different factors. It is therefore not possible to specify
certain fixed numbers of operating hours for general overhauls.
In our view, it is not necessary to open up and engine or perform a general overhaul as long as the engine
has good compression values and the following operating values have not changed significantly in relation
to the values measured on commissioning the engine:
D Charging pressure
D Exhaust temperature
D Coolant and lubricant temperature
D Oil pressure and oil consumption
D Smoke emissions
The following criteria greatly influence the length of the engine service life:
D Correct power output setting according to the type of application
D Technically correct installation
D Inspection if installation by authorised personnel
D Regular maintenance as per maintenance plan
D Choice and quality of lube oil, fuel and coolant in accordance with the publication
“Fuels, Lubricants and Coolants for MAN Diesel Engines”
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