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Home >> Ford >> 2005 >> Excursion 6.0 P, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Fuel Charging System - Turbocharger >> Diagnosis And Testing >> Turbocharger >> Component Tests >> Bearing Clearance Check >> Check for Free Rotation

Check for Free Rotation

NOTE: The turbocharger must be pre-oiled 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.

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