Step 2 and recheck the radial shaft movement as
outlined in Step 3 (Fig. 10). If the readings exceed those
obtained in Step 3, indications are that the compressor
wheel is contacting the compressor housing and
servicing is required.
Fig. 10. Checking Radial Shaft Movement with
Compressor Housing Removed
Examine carefully for bent blades, evidence of
rubbing on O.D., face and back of wheel, and for pieces
of blade broken off. If any of these conditions exist,
wheel must be replaced.
Remove core assembly from turbine housing.
Examine wheel carefully for evidence of rubbing on
housing. Check for bent or broken blades. Do not
attempt to straighten blades.
Cover intake and exhaust ports. Wash the
exterior of the turbocharger.
Use a commercially approved cleaner
only. A caustic solution will damage certain
parts and should not be used.
Place turbocharger on bench.
Mark the assembled position of parts (Fig. 11)
Compressor housing-to-back plate.
Back plate-to-center housing.
Center housing-to-turbine housing.
Fig. 11. Related Positions of Parts
1. Turbine Housing
2. Center Housing
3. Back Plate
4. Compressor Housing
5. Punch Marks
PRINTED IN UNITED STATES OF AMERICA