The theme of this final paper is „The analysis of deformation problem of shaft rotor of the turbocharges combustion engine“. This final paper is divided into a theoretical part and laboratory part. In theoretical part is explained about basic function of turbocharger as part of a diesel engine. Also given its basic function listed are its most important advantages and disadvanatges. Special attention was focused on the materials from which are made all vital parts of turbocharger essential for its proper operation. Maintenance is neccesary to avoid the most common problems and causes in function of the turbocharger. Regular and preventive maintenance ensures its longer projected life. In the laboratory part is given an isnight into the operating parameters of the turbocharger based on experiment which explains how wear and high temperature badly affects its vital parts. At the end of the final paper, all the results obtained by the experiment were analyzed, based on which attempts were made to provide possible solutions in order to extend the projected life of the turbocharger.