Inspection of the Compressor
Wheel and the Compressor
Housing
Illustration 25
g02269953
Typical example
(1) Turbine housing
(2) Compressor housing
1.
Remove the air cleaner from the compressor inlet.
2.
Inspect compressor wheel for damage from a
foreign object. If there is damage, determine the
source of the foreign object. As required, clean the
inlet system and repair the intake system. Replace
the turbocharger. If there is no damage, go to Step
4.
3.
Turn the rotating assembly by hand. While you turn
the assembly, push the assembly sideways. The
assembly should turn freely. Compressor wheel (2)
should not rub compressor housing (1). The
turbocharger must be replaced if the compressor
wheel rubs the compressor housing. If there is no
rubbing or scraping, go to Step 4.
4.
Inspect compressor wheel (2) and compressor
housing (1) for oil leakage. An oil leak from the
compressor wheel may deposit oil in the
aftercooler (if equipped). Drain and clean the
aftercooler if you find oil in the aftercooler.
a.
Check the oil level in the crankcase. If the oil
level is too high, adjust the oil level.
b.
Inspect the air cleaner element for restriction. If
restriction is found, correct the problem.
c.
Inspect the engine crankcase breather. Clean
the breather or replace the breather if the
breather is plugged.
d.
Remove the oil drain tube. Inspect the oil drain
hole and the oil drain tube for oil sludge.
Inspect the area between the bearings of the
rotating assembly shaft. If necessary, clean the
rotating assembly shaft, the oil drain hole, and
the oil drain tube.
e.
If Steps 4.a. through 4.d. did not reveal the
source of the oil leakage, the turbocharger has
internal damage. Replace the turbocharger.
Inspection of the Turbine Wheel
and the Turbine Housing
Illustration 26
g00922420
Typical example
(1) Turbine housing
(2) Turbine wheel
1.
Remove the air piping from the turbine housing.
2.
Inspect turbine wheel (2) for damage by a foreign
object. If there is damage, determine the source of
the foreign object. Replace the turbocharger. If
there is no damage, go to Step 3.
3.
Clean turbine wheel (2) and turbine housing (1) if
you find buildup of carbon or foreign material. If
there is no buildup of carbon or foreign material, go
to Step 4.
28
UENR0617
This document has been printed from SPI2. NOT FOR RESALE.