RADIATOR > ON-VEHICLE INSPECTION

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1. CHECK WATER FILLER CAP SUB-ASSEMBLY


    A107446E01
  1. 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 and 3 are not deformed, cracked or swollen.

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

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

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



    6. A104601E09
    7. Pump the cap tester several times, and check the maximum pressure *1.

      Text in Illustration 
      *1
      Radiator Cap Tester
      *2
      Water Filler Cap Sub-assembly
      *a
      30° or more

      Pumping speed:
      1 pump every second
      *1: Even if the cap cannot maintain the maximum pressure, it is not a defect.

      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 specified pressure for the minimum standard value, replace the water filler cap sub-assembly.