RADIATOR ON-VEHICLE INSPECTION


  1. INSPECT RADIATOR RESERVOIR CAP SUB-ASSEMBLY

    A003E6O

    1. Measure the valve opening pressure.


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

      2. Check that O-ring 1 is not deformed, cracked or swollen.

      3. Apply engine coolant to O-ring 1 and rubber packing 2 before using a radiator cap tester.

      4. A003EFAE05

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

        Pump speed
        1 pump per second

        Tech Tips


        • *: Even if the cap cannot maintain the maximum pressure, it does not necessarily indicate a defect.

        • When using the cap tester, tilt it 30° or more.

        Standard Judgment Criterion
        Item Specified Condition

        Standard value

        (for brand-new cap)

        93 to 123 kPa (0.95 to 1.25 kgf/cm2, 13.5 to 17.8 psi)

        Minimum standard value

        (after using cap)

        79 kPa (0.8 kgf/cm2, 11.4 psi)

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

  2. INSPECT FINS FOR BLOCKAGE

    A003CT6

    1. Check that the radiator, condenser and intercooler are not blocked with leaves dirt or insects. Clean the hose connections.

      If the fins are blocked, wash them with water or a steam cleaner.

      Note


      • If the distance between the steam cleaner and core is too close, the fins may be damaged.

      • When cleaning the intercooler, make sure no water enters its interior.

      • Keep the following injection distance.

        Standard Injection Distance
        Injection Pressure Specified Condition

        2942 to 4903 kPa

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

        		 300 mm (11.811 in.)

        4903 to 7845 kPa

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

        		 500 mm (19.685 in.)

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

      • Never apply water directly to the electronic components.

    2. Dry the fins with compressed air.