Radiator On-Vehicle Inspection

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
2Az-Fe Cooling. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. CHECK RADIATOR RESERVOIR CAP SUB-ASSEMBLY

Radiator -- On-Vehicle Inspection



1. CHECK RADIATOR RESERVOIR CAP SUB-ASSEMBLY


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35


  1. Measure the valve opening pressure.

    1. If there are water stains or foreign matter on O-ring 1, clean it with water and finger scouring.

    2. Check that O-ring 1 is not deformed, cracked or swollen.

    3. Apply engine coolant to O-ring 1 and rubber packing 2 before using a radiator cap tester.



      4. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Az-Fe Cooling.Cooling System.Radiator On-Vehicle Inspection

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

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

      Pump speed:
      1 pump per second
      *: 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
      (after using cap)
      		78.5 kPa (0.8 kgf/cm2, 11.4 psi)
      If the maximum pressure is less than the minimum standard value, replace the radiator reservoir cap sub-assembly.