SPRING 8E1139 - Caterpillar

Ensure that the sea cock is closed.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Cat Dealer Service Tool Catalog" or refer to Special Publication, PECJ0003, "Cat Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Drain the sea water circuit by removing the sea water pump inlet connection. Drain into a suitable container.
Remove the sea water connection to the inlet of the aftercooler assembly.
Remove the aftercooler core. Refer to the Disassembly and Assembly Manual, "Aftercooler - Remove and Install" for the procedure.
Turn the aftercooler core upside-down in order to remove debris.
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 concentration of cleaner.
Back flush the core with cleaner. Caterpillar recommends the use of Hydrosolv liquid cleaner. Table 1 lists Hydrosolv liquid cleaners that are available from your Caterpillar dealer.
Table 1
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 2%to a 5% concentration of the cleaner at temperatures up to 93°C (200°F). Refer to Application Guide, NEHS0526 or consult your Caterpillar dealer for more information.
Steam-clean the core in order to remove any residue. Flush the fins of the aftercooler core. Remove any other trapped debris.
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 proper 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.
Dry the core with compressed air. Direct the air in the reverse direction of the normal flow.
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.
Reinstall the aftercooler. Refer to the Disassembly and Assembly Manual, "Aftercooler - Remove and Install" for the procedure. Replace the o'ring on the aftercooler inlet and secure the flange connection.
Open the sea cock and check for water leaks.