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Check for Free Rotation - Off Vehicle

NOTE: Pre-oil the turbocharger before carrying out this check.
NOTE: Turbine and compressor wheels must spin freely when turned by hand. No housing contact is permitted.

Inspect the turbocharger compressor and turbine blades for damage. If the compressor or turbine wheel blades are damaged, replace the turbocharger.

Press and rotate the turbocharger shaft, then repeat from the opposite side. If either the compressor or the turbine wheel blades contact the housing, the bearings are worn or damaged and a new turbocharger must be installed.

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