SL2017-643/SRJ Guiding Overhaul Intervals

Based on the latest service experience and engine development we are pleased to issue a revised version of the Guiding Overhaul Intervals tables. The guiding overhaul intervals apply to electronically controlled ME type engines, dual fuel ME-GI type engines, and mechanically controlled MC types engines.

Note that the intervals given in the tables apply only to engines with so-called high topland pistons. High topland pistons are designed with a significantly higher topland than ringland.

Longer overhaul intervals can be obtained with a condition-based overhaul strategy. The means to obtain and document this are described in SL07-483/HRR.

In addition, it must be noted that the application of, for example, WHR, EGB, EGR and SCR will affect the heat load on the combustion chamber components. The above factors as well as fuel qualities may have an impact on the overhaul intervals of especially, but not exclusively, the exhaust valve parts.