Mark the turbine housing relative to the bearing
housing and remove the turbine housing
Axial clearance
Arrange the dial gauge bracket with magnetic foot and dial gauge as shown in the illustration. Apply the dial gauge with initial tension on the face of the shaft end of the turbine wheel. Press the rotor shaft against the dial gauge, read off and note the value. Press the rotor shaft in the opposite direction, read off and note the value. The difference between the values obtained is the
axial clearance.
Replace the turbocharger if this clearance is ex-ceeded.

Radial clearance
The radial clearance is measured only on the tur-bine side with a dial gauge or feeler gauge. Place the measuring tip of the dial gauge to the side of the hub, press the turbine wheel to the dial gauge, read off and note the value. Press the turbine wheel in the opposite direction, read off and note the value. The difference between the values obtained is the radial clearance. Measure at several points. If the play exceeds the permissible value, ex-change turbocharger.

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