Radiator On-Vehicle Inspection

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
3Zr-Fae 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, and then install the radiator cap to a radiator cap tester.



      4. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.3Zr-Fae Cooling.Cooling System.Radiator On-Vehicle Inspection

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

    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.
      Standard Judgment Criterion:
      Item
      		Specified Condition
      Standard value
      (for brand-new cap)
      		93 to 123 kPa (1.0 to 1.3 kgf/cm2, 13.5 to 18 psi)
      Minimum standard value
      (after using cap)
      		79 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.