TIAGO

1.05L REVOTORQ ENGINE 15 Checks On The Turbocharger:  Remove air inlet and exhaust outlet connections from the turbocharger.  Inspect both the wheels for probable blade damage caused by foreign material. The compressor wheel can be inspected through the compressor housing inlet opening. Turbine wheel blade tips can be examined from the exhaust outlet end of the turbine housing (you have to look between the turbine wheel blades at the gas entry area).  Examine the blade outer edges on both the wheels, adjacent to their respective housing bores, and check for wheel rub.  Rotate the shaft wheel assembly by hand and feel for drag or binding conditions. Push shaft to side and rotate to feel for rub. It should turn smoothly.  Lift both ends of the shaft up and down at the same time and feel for excessive journal bearing clearance. If clearance is normal, very little shaft movement will be detected.  If the shaft assembly rotates freely and no wheel damage, binding or rub has been noted, it can be assumed that the turbocharger can be reused.  If the turbocharger parts are damaged, wheels have rubbed / damaged, the shaft is not freely rotating, please contact TEL authorized service center. Needs of A Turbocharger: Clean Engine Oil. Clean Air from the Air Filter. Why A Turbocharger Needs Them  The clearances between the rotor and the journal are extremely small and the parts are machined to very close tolerances.  Turbocharger rotor-assembly rotates at extremely high speeds.  Turbocharger uses fully floating journals and will rotate at less than half the speed of the rotor.  The turbocharger components are balanced to very fine balancing limits.  The air / gas entering the compressor and turbine housing travels at very high speeds.  Adequate clean oil supply to the journals is a must to stabilize, lubricate and cool.  Oil supply to the turbocharger immediately after the start of the engine and minimum oil pressure during its operation, ensures proper functioning of the journals.  Oil contaminated with dirt or foreign material will wear the journals and journal seating area of the shaft.  Dirt in the oil blocks the oil holes in the journals and central housing leading to oil starvation to the turbocharger.  Dust, sand or any foreign particle entering into the turbocharger compressor housing will damage the aluminum compressor wheel blades, thus leading to turbocharger failure.