RADIATOR ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK RESERVE TANK CAP

    A005IO6E01
    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. A005M59E17
        Text in Illustration
        *1 Radiator Cap Tester
        *2 Reserve Tank 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 reserve tank cap cannot maintain the maximum pressure, it is not defective.

        Judgment Criterion
        Item Specified Condition

        Standard value

        (brand-new reserve tank cap)

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

        Minimum standard value

        (used reserve tank cap)

        78.5 kPa (0.80 kgf/cm2, 11.38 psi)

        If the maximum measured pressure is less than the minimum standard value, replace the reserve tank cap.

  2. INSPECT FINS FOR BLOCKAGE

    A005LF5

    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.