Radiator: Testing and Inspection

1UR-FSE COOLING: RADIATOR: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. CHECK RADIATOR CAP SUB-ASSEMBLY
(a) 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) When using the cap tester, tilt it more than 30°.
(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:






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