i01546702
Aftercooler Core - Clean/Test
SMCS Code: 1064-070; 1064-081
1. Remove the core. Refer to the Service Manual for
the procedure.
2. Turn the aftercooler core upside-down in order to
remove debris.
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.
3. Back flush the core with cleaner.
Caterpillar recommends the use of Hydrosolv
liquid cleaner. Table 18 lists Hydrosolv liquid
cleaners that are available from your Caterpillar
dealer.
Table 18
Hydrosolv Liquid Cleaners
(1)
Part Number
Description
Size
1U-5490
Hydrosolv 4165 19 L (5 US gallon)
174-6854
Hydrosolv 100 19 L (5 US gallon)
(1)
Use a two to five percent concentration of the cleaner at tem-
peratures up to 93°C (200°F). Refer to Application Guide,
NEHS0526 or consult your Caterpillar dealer for more
information.
4. Steam clean the core in order to remove any
residue. Flush the fins of the aftercooler core.
Remove any other trapped debris.
5. 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.
6. Dry the core with compressed air. Direct the air in
the reverse direction of the normal flow.
7. Inspect the core in order to ensure cleanliness.
Pressure test the core. Many shops that service
radiators are equipped to perform pressure tests.
If necessary, repair the core.
8. Install the core. Refer to the Service Manual for the
procedure.
For more information on cleaning the core, consult
your Caterpillar dealer.
i02676048
Alternator - Inspect
SMCS Code: 1405-040
Caterpillar recommends a scheduled inspection of
the alternator. Inspect the alternator for loose
connections and proper battery charging. Inspect the
ammeter (if equipped) during engine operation in
order to ensure proper battery performance and/or
proper performance of the electrical system. Make
repairs, as required.
Check the alternator and the battery charger for
proper operation. If the batteries are properly
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. The battery will
not crank the engine, even if the engine is warm.
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.
i00656523
Alternator and Fan Belts -
Inspect/Adjust/Replace
SMCS Code: 1357-039
Inspection
Belt tension should be checked initially between
the first 20 to 40 hours of engine operation.
After the initial check, the belt tension should be
checked at Every 250 Service Hours or Three
Months.
To maximize the engine performance, inspect the
belts for wear and for cracking. Replace belts that are
worn or damaged.
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.
If the belts are too loose, vibration causes
unnecessary wear on the belts and pulleys. Loose
belts may slip enough to cause overheating.
106
SEBU7125-13
Maintenance Section
Aftercooler Core - Clean/Test
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