RADIATOR ON-VEHICLE INSPECTION


  1. CHECK RESERVE TANK CAP

    A0117V1E03
    Text in Illustration
    *1 O-ring
    *2 Rubber Seal

    1. Measure the valve opening pressure.


      1. If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.

      2. Check that the O-ring is not deformed, cracked or swollen.

      3. Apply engine coolant to the O-ring and rubber seal before using the radiator cap tester.

      4. A0117T4E03
        Text in Illustration
        *1 Radiator Cap Tester
        *2 Radiator Cap

        When using the cap tester, tilt it upwards 30 degrees or more.

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

        Pumping speed
        1 pump per second

        Tech Tips

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

        Judgment Criterion
        Item Specified Condition

        Standard value

        (brand-new cap)

        94 to 122 kPa (1.0 to 1.2 kgf/cm2, 13.6 to 17 psi)

        Minimum standard value

        (used cap)

        78 kPa (0.8 kgf/cm2, 11.3 psi)

        If the maximum measured pressure is less than the minimum standard value, replace the radiator cap sub-assembly.

  2. INSPECT FINS FOR BLOCKAGE

    A011BNL

    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 radiator core surface.

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

        Standard Injection Distance
        Injection Pressure Specified Condition

        2942 to 4903 kPa

        (30 to 50 kgf/cm2, 427 to 711 psi)

        		 300 mm (11.81 in.)

        4903 to 7845 kPa

        (50 to 80 kgf/cm2, 711 to 1138 psi)

        		 500 mm (19.69 in.)

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

      • Do not expose electronic components to water.