Information on working sealing surfaces when carrying out engine repairs

When machining mating surfaces and components or internal areas delivering oil or fuel, no abrasive means are to be used (emery cloth etc.), as the loose particles (coríndon for example) contaminate and damage main bearing and connecting rod bearing shells.

Therefore scraping tools must always be used for removing seal residue, rust, lime and combustion residue.

All oil and coolant galleries and drillings should be carefully plugged before the processing begins.