The turbocharger of diesel engine is a machine that works at high speed in high speed, and its working speed is up to the highest. Such high-speed rotating machinery often causes damage due to improper installation. More than% of the main reasons for the life of the supercharger that can not reach the expected service life are due to the improper installation or use, serious overloading of the vehicle or the change of the oil supply characteristics by the user itself. The common faults of the turbocharger are described below.