B3.9 and B5.9 Series Engines
Section 10 - Air Intake System - Group 10
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause bodily
When using a steam cleaner, wear safety glasses or a
face shield, as well as protective clothing. Hot steam
can cause serious personal injury.
When using solvents, acids, or alkaline materials for
cleaning, follow the manufacturer's recommendations
for use. Wear goggles and protective clothing to avoid
Tape or plug all openings to prevent solvent or steam
from damaging the oil cavities in the turbocharger.
Remove all carbon deposits and gasket material from sur-
faces (1), (2), and (3).
Use solvent or steam to clean the exterior of the turbo-
charger. Dry with compressed air.
NOTE: If the turbocharger is not to be immediately re-
placed, cover the opening to prevent any material from
falling into the manifold.
Inspect for Reuse (010-033-007)
Inspect the sealing surface and mounting studs for dam-
Inspect the turbocharger.
Inspect turbocharger wastegate linkage, valve shaft, mod-
ule, and pressure signal line.
Inspect the turbocharger impeller blades for damage. If the
impeller is damaged, inspect the intake piping and filter
element for damage.
Check or calibrate wastegate. Refer to Procedure 010-050
or to the Turbocharger Shop Manual, Bulletin No. 3810321.