On-Vehicle Inspection [06/2015 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Visually check the water filler cap sub-assembly.

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.
   NOTE:

   Perform the work by hand.

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.

1. Apply a new coolant (Toyota genuine FC stack coolant (Pre-mixed)) to the rubber packings (2) and (3) before using the radiator cap tester.
2. Install the radiator cap sub-assembly to the radiator cap tester.
3. Pump the radiator cap tester several times, and check the maximum pressure.

   Pumping speed

   1 pump per second

   Judgment Criteria

   Item	Specified Condition
   Standard value (for brand-new radiator cap sub-assembly)	74 to 103 kPa (0.8 to 1.1 kgf/cm2 , 11 to 15 psi)
   Minimum standard value (after using radiator cap sub-assembly)	74 kPa (0.8 kgf/cm2 , 11 psi)

   NOTE:

   Using the radiator cap tester, tilt it to more than 30 degrees.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Radiator Cap Sub-assembly
   *a	Radiator Cap Tester
   *b	30° or more

   HINT: 

   Even if the water filler cap sub-assembly cannot maintain the maximum pressure, it is not a defect.

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