C9.3 Industrial Engine and CX31-P600-C9I Petroleum Power Train Package Caterpillar


Aftercooler Core - Clean/Test - Sea Water Cooled (If Equipped)

Usage:

C9.3 C9N

  • Remove the core from the engine. Refer to your Disassembly and Assembly Manual, "Aftercooler Core - Remove".

  • Turn the aftercooler core onto one side in order to remove debris. Remove the debris that is accessible.


    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 concentration of cleaner.


    1. 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 two to five percent 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.

    2. Steam clean the core in order to remove any residue. Flush the fins of the aftercooler core. Remove any other trapped debris from the inside and from the outside of the core.

      Note: Do not use high pressure when the fins are cleaned. High pressure can damage the fins.

    3. Wash the core with hot, soapy water.

    4. Flush the core thoroughly in order to remove residue and remaining debris. Flush the core with clean, fresh water until the water that is exiting the core is clear and free of debris.

      ------ WARNING! ------

      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.

      The maximum air pressure for cleaning purposes must be reduced to 205 kPa (30 psi) when the air nozzle is deadheaded.


    5. Dry the core with compressed air. Direct the air in the reverse direction of the normal flow.

    6. Prior to installation, inspect the O-ring for damage. If necessary, replace the O-ring.

    7. Inspect the core for trapped debris and cleanliness. If it is necessary, remove the debris and repeat the cleaning procedure.

    8. Inspect the core for damage and perform a pressure test in order to detect leaks. Many shops that service radiators are equipped to perform pressure tests.

    9. Install the core. Refer to your Disassembly and Assembly Manual, "Aftercooler Core - Install".
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