GUIDE FOR JUDGING CONDITION OF RELEVANT PISTON—RUNTIME COMPONENTS

This Guide was officially released by Wartsila company to apply to their two-stroke engines. It will present practical interest to the people engaged in technical maintenance of these engines. They will find all required instructions to be used when checking the condition of the piston running components. The document is intended to serve as a guidance for the condition based routine maintenance of the engines.

The actual wear rates commonly depend on the operational factors which would typically include load profile of the engine, ambient conditions and fuel used. The critical condition of the piston rings and liners can be detected by the visual inspection at quite early stages. It means timely taking all required countermeasures would allow to avoid the severe wear and losing of the liners and rings; this in turn would significantly increase the reliability of the engine.

This compact volume will give instructions for preparation to the underside inspection of the pistons, tools and equipment used, assessment of the condition for the cylinder liners and piston rings, and condition of the piston crown. In addition there are several images demonstrating the condition, and sample report form to be used.