Move the turbine wheel as shown in the illustration and check that there is no looseness* in the shaft and it does not contact the housing.
If there is any contact with the housing or obvious looseness in the shaft, replace the turbocharger sub-assembly.
- HINT:
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*: A clearance on the order of 100 μm exists between the turbine shaft and bearings. If it is difficult to judge the looseness of turbine shaft, perform same inspection on another vehicle which has the same turbocharger and compare the clearance.