RADIATOR ON-VEHICLE INSPECTION


  1. INSPECT RADIATOR CAP

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    1. Measure the valve opening pressure.


      1. Wash stains and foreign matter from rubber packings A, B and C with water and finger scouring.

      2. Check that A or B is not deformed, cracked or swollen.

      3. Check that rubber packings B and C are not stuck together.

      4. Apply engine coolant to rubber packing B before using the radiator cap tester.

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        Text in Illustration
        *1 Radiator Cap
        *2 Radiator Cap Tester
        *a 30°or more

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

      6. 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 might not be defective.

        Judgment Criterion
        Valve Opening Pressure 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 value

        (after using cap)

        78.5 kPa (0.80 kgf/cm2, 11.38 psi)

        If the maximum pressure is less than the minimum value, replace the radiator cap.