i03632416
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.
Inspect the fins for damage. Bent fins may be opened
with a “comb”.
Note:
If parts of the aftercooler system are repaired
or replaced, a leak test is highly recommended.
Inspect these items for good condition: Welds,
mounting brackets, air lines, connections, clamps
and seals. Make repairs, if necessary.
i02322311
Alternator
-
Inspect
Perkins
recommends
a
scheduled
inspection
of
the
alternator.
Inspect
the
alternator
for
loose
connections
and
correct
battery
charging.
Check
the
ammeter
(if
equipped)
during
engine
operation
in
order
to
ensure
correct
battery
performance
and/or
correct
performance
of
the
electrical
system.
Make
repairs,
as
required.
Check the alternator and the battery charger for
correct operation. If the batteries are correctly
charged, the ammeter reading should be very near
zero. All batteries should be kept charged. The
batteries should be kept warm because temperature
affects the cranking power. If the battery is too cold,
the battery will not crank the engine. When the
engine is not run for long periods of time or if the
engine is run for short periods, the batteries may not
fully charge. A battery with a low charge will freeze
more easily than a battery with a full charge.
i06675903
Alternator
and
Fan
Belts
-
Replace
Illustration 40
g06069465
Typical example
(1) Mounting bolt
(2) Adjusting bolt
(3) Mounting bolt
Note:
When a new belt is installed, check the belt
tension again after 20 hours of engine operation.
Refer to the Disassembly and Assembly Manual for
the installation procedure and the removal procedure
for the belt.
Belt tension for a new belt is between 400 N to 489 N
(90 lb to 110 lb).
For applications that require multiple drive belts,
replace the belts in matched sets. Replacing only one
belt of a matched set will cause the new belt to carry
more load because the older belt is stretched. The
additional load on the new belt could cause the new
belt to break.
76
SEBU9075-03
