SEBU8605-01 81
Maintenance Section
Aftercooler Core - Clean/Test
i01807350
Afte rc ooler Co re - Clean/Test
(Air-To-Air A
ftercooler)
Theair-to-airaftercoolerisOEMinstalledinmany
applications. Please refer to the OEM specifications
for informa
tion that is related to the aftercooler.
i02322295
Aftercoole
r Core - Ins pect
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. C
lean 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.
Person
al injury can result without following prop-
er procedure. When using pressure air, wear a pro-
tective 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 de
bris 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
nece
ssary.
Inspect the fins for damage. Bent fins may be opened
wit
ha“comb”.
Note: If parts of the aftercooler system are repaired
or r
eplaced, a leak test is highly recommended.
Inspect these items for good condition: Welds,
mo
unting brackets, air lines, connections, clamps,
and seals. Make repairs, if necessary.
i02322311
Alternator - Insp ect
Perkins recom
mends a scheduled inspection of
the alternator. Inspect the alternator for loose
connections and correct battery charging. Check the
ammeter (if e
quipped) 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 op
eration. 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 easi
ly than a battery with a full charge.
i02680137
Alternator and Fan Belts -
Replace
Refer to Disassembly and Assembly Manual , “
Alternator Belt - Remove and Install”.
i03559623
Battery - Replace
Batteries give off combustible gases which can
explode. A spark can cause the combustible gas-
es to ignite. This can result in severe personal in-
jury or death.
Ensure proper ventilation for batteries that are in
an enclosure. Follow the proper procedures in or-
der to help prevent electrical arcs and/or sparks
near batteries. Do not smoke when batteries are
serviced.
To Next Page
Loading...
