i02322260
Aftercooler
Core
-
Clean/Test
1.
Remove the core. Refer to the OEM information for
the correct procedure.
2.
Turn the aftercooler core upside-down in order to
remove debris.
Personal injury can result from air pressure.
Personal injury can result without following prop-
er procedure. When using pressure air, wear a
protective face shield and protective clothing.
Maximum air pressure at the nozzle must be less
than 205 kPa (30 psi) for cleaning purposes.
3.
Pressurized air is the preferred method for
removing loose debris. Direct the air in the
opposite direction of the fan's air flow. Hold the
nozzle approximately 6 mm (.25 inch) away from
the fins. Slowly move the air nozzle in a direction
that is parallel with the tubes. This will remove
debris that is between the tubes.
4.
Pressurized water may also be used for cleaning.
The maximum water pressure for cleaning
purposes must be less than 275 kPa (40 psi). Use
pressurized water in order to soften mud. Clean
the core from both sides.
NOTICE
Do not use a high concentration of caustic cleaner to
clean the core. A high concentration of caustic
cleaner can attack the internal metals of the core and
cause leakage. Only use the recommended concen-
tration of cleaner.
5.
Back flush the core with a suitable cleaner.
6.
Steam clean the core in order to remove any
residue. Flush the fins of the aftercooler core.
Remove any other trapped debris.
7.
Wash the core with hot, soapy water. Rinse the
core thoroughly with clean water.
Personal injury can result from air pressure.
Personal injury can result without following prop-
er procedure. When using pressure air, wear a
protective face shield and protective clothing.
Maximum air pressure at the nozzle must be less
than 205 kPa (30 psi) for cleaning purposes.
8.
Dry the core with compressed air. Direct the air in
the reverse direction of the normal flow.
9.
Inspect the core in order to ensure cleanliness.
Pressure test the core. If necessary, repair the
core.
10.
Install the core. Refer to the OEM information for
the correct procedure.
11.
After cleaning, start the engine and accelerate the
engine to high idle rpm. This will help in the
removal of debris and drying of the core. Stop the
engine. Use a light bulb behind the core in order to
inspect the core for cleanliness. Repeat the
cleaning, if necessary.
i02322295
Aftercooler
Core
-
Inspect
Note:
Adjust
the
frequency
of
cleaning
according
to
the
effects
of
the
operating
environment.
Inspect
the
aftercooler
for
these
items:
damaged
fins,
corrosion,
dirt,
grease,
insects,
leaves,
oil
and
other
debris.
Clean
the
aftercooler,
if
necessary.
For
air-to-air
aftercoolers,
use
the
same
methods
that
are
used
for
cleaning
radiators.
Personal injury can result from air pressure.
Personal injury can result without following prop-
er procedure. When using pressure air, wear a
protective face shield and protective clothing.
Maximum air pressure at the nozzle must be less
than 205 kPa (30 psi) for cleaning purposes.
After cleaning, start the engine and accelerate the
engine to high idle rpm. This will help in the removal
of debris and drying of the core. Stop the engine. Use
a light bulb behind the core in order to inspect the
core for cleanliness. Repeat the cleaning, if
necessary.
68
SEBU8119-04
