The reference manual describes the methods of defection and methods for eliminating defects in parts, assemblies and mechanisms of tripod and kreuzkopf diesel engines by ship crew. It contains reference data. The main attention is paid to maintenance of diesel engines, elimination of their defects and tests after maintenance or repair. The reference manual deals in detail with such issues as the alignment of mechanisms, the centering of the details of the movement mechanism of the tripod and kreuzkopf diesel engines .. It contains reference data. The book is a reference manual for marine mechanics of the fishing and marine fleets and will be useful for cadets and students of higher educational institutions, maritime academies, schools and colleges. IL. 141, tab. 124, applications 10.