Radial Clearance
- Remove turbocharger assembly from engine. Remove wastegate activating rod clip and rod from activating arm.
- Remove 5 bolts connecting turbine outlet elbow to housing. One bolt is located inside elbow housing. Remove housing from turbocharger assembly.
- Attach a dial indicator with 3" extension rod to center housing so indicator plunger extends through oil outlet port and contacts shaft of turbine wheel assembly. See Fig. 4
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Courtesy of FORD MOTOR CO.
- Manually apply equal pressure to both turbine and compressor wheels to move shaft AWAY from dial indicator extension rod. Set indicator to zero.
- Manually apply equal pressure to both the turbine and compressor wheels to move shaft TOWARD dial indicator. Roll the wheels slightly in each direction to make sure shaft has moved as far as it will go. Record maximum reading on indicator gauge.
- Manually apply equal pressure to both wheels to move shaft AWAY from dial indicator. The indicator pointer should be at zero. Repair Information Company
- Repeat procedure until exact maximum reading has been obtained. If maximum radial bearing clearance is not within 0.003 - 0.006", replace turbocharger assembly.