RADIATOR ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK RADIATOR CAP SUB-ASSEMBLY


    1. A01W4SNE09
      Text in Illustration
      *a Rubber Packing (1)
      *b Rubber Packing (2)
      *c Rubber Packing (3)
      *d Valve Seat

      Measure the valve opening pressure.


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

      2. Check that the rubber packings (1), (2) and (3) are not deformed, cracked or swollen.

      3. Check that the rubber packing (3) and valve seat are not stuck together.

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

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

      6. A01W4QEE28
        Text in Illustration
        *1 Radiator Cap Sub-assembly
        *a Radiator Cap Tester
        *b 30° or more

        Pump the radiator cap tester several times, and check the maximum pressure.*1

        Pumping speed
        1 pump per second

        *1: Even if the radiator cap sub-assembly cannot maintain the maximum pressure, it is not a defect.

        Result
        Item Specified Condition

        Standard pressure

        (for brand-new radiator cap sub-assembly)

        93 to 123 kPa (0.9 to 1.3 kgf/cm2, 13.5 to 18.0 psi)

        Minimum pressure

        (for used radiator cap sub-assembly)

        79 kPa (0.8 kgf/cm2, 11.5 psi)

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