Service Manual

ISB, ISBe and QSB (Common Rail [...] Turbocharger
Section 10 - Air Intake System - Group 10 Page 10-43
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Wastegate Check
• Inspect the lever pin.
• Replace the turbocharger if the lever pin is bent or
worn excessively. See the Remove and Install
sections in this procedure.
• Inspect the valve and valve seat for cracks or erosion.
NOTE: On some turbochargers, removal of the turbine
exhaust outlet cover may be necessary to inspect the
valve and valve seat. If the turbine exhaust outlet cover is
removed, replace the gasket before installing the cover.
• Replace the turbocharger if the valve or valve seat are
excessively cracked or eroded. See the Remove and
Install sections in this procedure.
• Actuate the lever by hand to verify that the shaft
rotates freely and is not seized.
• Check for excessive movement between the shaft and
bushing.
• Replace the turbocharger if the shaft is seized or if
there is excessive movement between the shaft and
bushing. See the Remove and Install sections in this
procedure.
Axial Clearance Check
• Use dial depth gauge, Part Number ST-537.
• Push the rotor assembly away from the gauge.
• Set the gauge to zero.