Fiat Punto 1.9 JTD turbo III. Fiat Grande Punto 1.9 JTDM turbo. Fiat Sedici 1.9 JTDM turbo. This is a symptom of overheating caused by lack of oil lubrication. The shaft wheel assembly and compressor wheel are assembled and balanced as a rotor on a Gielser horizontal balancing machine.