Check for Free Rotation
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The turbocharger must be preoiled before carrying out this check.
NOTE:
Turbine and compressor wheels must spin freely when turned by hand. No housing contact is permitted.
Press and rotate the radial shaft, then repeat from the opposite side. If either the compressor wheel or the turbine wheel contacts the housing, the bearings are bad, and a new turbocharger must be installed.