production of plastic moldings. It analyzes commonly used methods in technicaldiagnostics. With the help of vibro-diagnostics, using the procedures specified by ISO STN10 816 and the method of investigation of spectral analysis and trend values, it determinesthe cause of the failure of the injection molding machine. In addition, the diploma thesisoffers diagnostics using a time window when diagnosing radial piston hydraulic pump faults.