Bearing Axial Clearance Check

Fig. 5 Checking turbocharger bearing axial clearance:

1. Remove turbocharger assembly from engine as described under ``Component Replacement.''
2. Remove five bolts connecting turbine outlet elbow assembly and remove the elbow.
3. Attach dial indicator tool 4201-C, or equivalent, to center housing so that indicator plunger contacts shaft, Fig. 5.
4. Manually push turbine wheel assembly as far away from dial indicator tip as possible.
5. Set dial indicator to zero while holding turbine wheel away from plunger tip.
6. Manually push turbine wheel assembly toward dial indicator tip as far as possible.
7. Repeat step 4 to ensure that dial indicator returns to zero.
8. Repeat steps 4 through 7 to ensure that an accurate measurement has been obtained. If bearing axial clearance is less than .001 inch or greater than .003 inch, replace turbocharger assembly.