Emission Control Systems: EGR Cooler Overheating/Coolant Loss
(a) If either test indicates turbocharger repair or replacement is required, refer to the WSM, Section 303-01D General Procedures for Turbocharger
Reconditioning procedures. Turbocharger service must be performed while the turbocharger is off the vehicle for head gasket service in Step 9.
(b) If both tests indicate the turbocharger is operating properly, go to Step 9.
9. Head Gasket Replacement:
a. Replace the head gaskets. Refer to WSM, Section 303-01 C for head removal installation, cleaning and flatness measurement procedures. Refer
to Cylinder Head Gasket Identification Chart located at the end of this procedure. (Figure 5)
