RADIATOR ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK RESERVE TANK CAP

    A0056FZE05

    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 the radiator cap tester.

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

      5. A0052GHE01
        *1 Radiator Cap Tester
        *2 30° or more
        *3 Reserve Tank Cap

        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 necessarily defective.

        Judgment Criterion
        Item Specified Condition

        Standard value

        (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 value

        (for used cap)

        78.5 kPa (0.8 kgf/cm2, 11.4 psi)

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

  2. INSPECT FINS FOR BLOCKAGE

    A0055C7

    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 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 (11.8 in.)

        4903 to 7845 kPa

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

        		 500 mm (19.7 in.)

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

      • Do not expose electronic components to water.