General notes on engine overhaul
12
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 Boost 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 in accordance with the maintenance schedule in the Service Booklet
D Choice and quality of lubricating oil, fuel and coolant
Note:
Only use coolants that comply with MAN regulations.
For basic information on the consumable materials, refer to the publication “Fuels, Lubricants
and Coolants for MAN Diesel Engines”. You can find the approved products on the Internet at:
−http://www.mn.man.de/index/mn_eng/motor/serviceproducts.htm−
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