Centinel System – Repair Manual – 010-055   Turbocharger Wastegate Valve Body

The wastegate actuator end-link must be removed to inspect the turbocharger wastegate. Refer to Procedure 010-050.

Inspect the lever pin.

If the lever pin is worn excessively, replace the turbocharger. Refer to Procedure 010-033.

Rotate the lever by hand to verify that the shaft turns freely and is not seized.

Check for excessive movement between the shaft and bushing.

Replace the turbine housing if the shaft and bushing are damaged or seized.

Refer to the Turbocharger Master Repair Manual, Bulletin 3580555.

The turbocharger must be removed from the engine and placed in a vertical position sitting on the compressor inlet to perform the wastegate valve wear measurement. Refer to Procedure 010-033.

To make sure of an accurate measurement, do not remove the wastegate valve cover or take the measurement from the top of the capscrews securing the wastegate valve cover.

Use a micrometer depth gauge to take a measurement from the face of the wastegate valve cover to the end of the wastegate actuator end link. Do not apply any air pressure to the wastegate actuator.

Calibrate the turbocharger wastegate actuator if the wastegate wear measurement is less than specifications. Refer to Procedure 010-050 for wastegate actuator recalibration procedure.

Replace the turbocharger if the wastegate wear measurement is greater than specifications. Refer to Procedure 010-033 for the replacement procedure.