SERVICE MANUAL
TURBOCHARGERS
Section 1
CLEANING, INSPECTION & REPAIR
CLEANING
Clean the Turbocharger and Related Components as
Follows:
1.
Thoroughly clean the piping connecting the air
cleaner to the Turbocharger.
2.
Remove the air cleaner and clean inside the air
cleaner element housing. (Important to prevent
repeat Turbocharger or engine failures).
3.
In the event of a Turbocharger failure, REPLACE
the OLD AIR CLEANER ELEMENT with a NEW
AIR CLEANER ELEMENT, because foreign
material and/or compressor wheel particles may
be embeded in the air cleaner element.
NOTE: If the air cleaner element is not changed, the
foreign material end/or particles may be drawn Into
the turbocharger compressor wheel when the engine
Is restarted.
4.
Clean
the
exhaust
elbow
and
manifold,
thoroughly.
NOTE: Use Bendix Metal Cleaner or Gunk Hydroseal
to clean components. DO NOT use a caustic
solution.
5.
In case of Turbocharger failure or damage to the
wheel assembly, plug the Turbocharger oil Inlet
tube and operate the engine without the
Turbocharger installed to blowout any foreign
material In the engine or manifold.
INSPECTION
Inspect the Assembled Turbocharger as Follows:
1.
Visually Inspect the compressor and turbine
wheels for damaged blades or evidence of wheel
contact with compressor or turbine housings.
(see Fig. a & b).
Figure 5a. - Foreign Material Turbo Damage
NOTE: View of the turbocharger compressor wheel
which has been damaged by foreign material from
the air Inlet system.
Hard dense foreign material such as capscrews or
nuts
will
damage
the
leading
edges
of
the
compressor wheel. Soft foreign material such as
shop
rags
will
bend
the
compressor
blades
backward.
Figure 5b. - Bearing Failure Resulting in Compressor
Wheel Damage
NOTE: View of turbocharger compressor wheel
damaged due to failed bearings. The compressor
wheel blades made contact with the compressor
housing wail after bearing failure.
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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