Shut off the engine.
Allow the turbocharger to cool, and remove the exhaust
pipe from the turbine.
Use a high intensity black light (Part No. 3377253 or
3377394) to inspect the turbine outlet for oil.
NOTE: A dark blue glow indicates fuel, and a yellow glow
indicates oil.
If oil is found inside the turbine housing, remove the oil
drain tube and check for restrictions. Clear any restric-
tions found or replace damaged component as required.
If no drain tube restriction is found, check for restrictions
in the engine breather or the breather tube. Clear any
restrictions found or replace damaged component as
required.
If no turbocharger drain or engine breather tube restric-
tion is found, remove the turbocharger. Refer to Proce-
dure 3-08.
Section 3 - Combustion Air System Turbocharger Seal Leak - Testing (3-02)
N14 Page 3-9
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