GSIC - Global Service Information Center

# RADIATOR > ON-VEHICLE INSPECTION

## for Preparation Click here

1. CHECK RADIATOR CAP SUB-ASSEMBLY

1. Measure the valve opening pressure.

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

   2. Check that 1, 2 or 3 is not deformed, cracked or swollen.

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

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

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

   6. Pump the cap tester several times, and check the maximum pressure*.
      Pumping 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 cap sub-assembly.