RADIATOR ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK WATER FILLER CAP SUB-ASSEMBLY

    A005HN0E04

    1. Measure the valve opening pressure.


      1. If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean the part(s) with water and finger scouring.

      2. Check that rubber packings 1, 2 and 3 are not deformed, cracked or swollen.

      3. Check that rubber packings 3 and 4 are not stuck together.

      4. Apply engine coolant to rubber packings 2 and 3 before using the radiator cap tester.

      5. When using the cap tester, tilt it to more than 30 degrees.

      6. A005GW9E15
        Text in Illustration
        *1 Radiator Cap Tester
        *2 Water Filler Cap Sub-Assembly
        *a 30°or more

        Pump the cap tester several times, and check the maximum pressure *1.

        Pumping speed
        1 pump per second

        *1: Even if the cap cannot maintain the maximum pressure, it is not a defect.

        Judgment criteria
        Item Specified Condition

        Standard valve

        (for brand-new cap)

        93.3 to 122.7 kPa (0.95 to 1.25 kgf/cm2, 13.5 to 17.8 psi)

        Minimum standard valve

        (after using cap)

        78.5 kPa (0.8 kgf/cm2, 11.4 psi)

        If the maximum pressure is less than the specified pressure for the minimum standard valve, replace the water filler cap sub-assembly.

  2. INSPECT FINS FOR BLOCKAGE

    A005M9F

    1. If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.

      Note


      • To avoid damaging the fins, the injection direction should be at right angles to the core surface.

      • If the steam cleaner is too close to the core, there is a possibility of damaging the fins, so keep to the following injection distances.

        Injection Pressure

        kPa (kgf*cm2, psi)

        Injection Distance

        mm (in.)

        2.942 to 4.903

        (30 to 50, 427 to 711)

        		 300 (11.811)

        4.903 to 7.845

        (50 to 80, 711 to 1.138)

        		 500 (19.685)

      • If the fins are bent, straighten them with a screwdriver or pliers.

      • Do not expose electronic components to water.