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On-Vehicle Inspection [10/2017 - ]: Procedure

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  1. INSPECT RESERVE TANK CAP 
    1. Measure the valve opening pressure.
      GTY493011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a O-ring
      *b Rubber Packing
      1. If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.
      2. Check that the O-ring is not deformed, cracked or swollen.
      3. Apply engine coolant to the O-ring and rubber packing before using a radiator cap tester.
      4. When using the radiator cap tester, tilt it upwards 30° or more.
        GTY488804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Reserve Tank Cap
        *a Radiator Cap Tester
        *b 30° or more
      5. Pump the radiator cap tester several times, and check the maximum pressure.

        Pump Speed

        1 pump per second

        Result

        Item Specified Condition
        Standard pressure
        (for brand-new reserve tank cap)        		 93 to 123 kPa (1.0 to 1.3 kgf/cm2 , 13.5 to 18.0 psi)
        Minimum pressure
        (for used reserve tank cap)        		 79 kPa (0.8 kgf/cm2 , 11.5 psi)

        HINT: 

        Even if the reserve tank cap cannot maintain the maximum pressure, it is not a defect.

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

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