RADIATOR ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK RADIATOR CAP SUB-ASSEMBLY


    1. A004ILV

      Measure the valve opening pressure.


      1. If there are water stains or foreign matter on rubber packings 1, 2 or 3, clean the part(s) with water and finger scouring.

      2. Check that rubber packings 1, 2 or 3 are not deformed, cracked or swollen.

      3. Check that rubber packings 3 and 4 are not stuck together.

      4. Apply engine coolant to rubber packings 2 and 3 before using the radiator cap tester.

      5. A004H2WE01
        Text in Illustration
        *1 Radiator Cap Tester
        *2 Radiator cap sub-assembly
        *a 30° or more

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

      6. 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 a defect.

        Judgment Criterion
        Item Specified Condition

        Standard valve

        (for brand-new cap)

        93 to 123 kPa (0.95 to 1.25 kgf/cm2, 14 to 18 psi)

        Minimum standard valve

        (for used cap)

        83 kPa (0.85 kgf/cm2, 12 psi)

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