CAUTION / NOTICE / HINT
When coolant (Toyota genuine FC stack coolant) is hot, do not remove the radiator cap sub-assembly.
Fluid and steam may spray out due to high pressure, possibly resulting in burns.
INSPECT RADIATOR CAP SUB-ASSEMBLY
|*a||Rubber packing (1)|
|*b||Rubber packing (2)|
|*c||Rubber packing (3)|
Visually check the water filler cap sub-assembly.
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.
Perform the work by hand.
Check that the rubber packings (1), (2) and (3) are not deformed, cracked or swollen.
Check that the rubber packing (3) and valve seat are not stuck together.
Measure the valve opening pressure.
Apply a new coolant (Toyota genuine FC stack coolant) to the rubber packings (2) and (3) before using the radiator cap tester.
Install the radiator cap sub-assembly to the radiator cap tester.
|*1||Radiator Cap Sub-assembly|
|*a||Radiator Cap Tester|
|*b||30° or more|
Pump the radiator cap tester several times, and check the maximum pressure.
|1 pump per second|
Using the radiator cap tester, tilt it to more than 30 degrees.
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.