MTU 12V4000M73 series Operating Instructions Manual page 176

Evaluation of findings and further measures
The findings in the start phase of oxidation discoloration and burn marks are similar. A thorough investigation
and compliance with the above evaluation criteria allow an unambiguous evaluation. To avoid unnecessary
disassembly work, it is recommended that another inspection be carried out after further operation of the
engine.
174 | Cylinder Liner | MS150045/03E 2018-08