Radiator: Testing and Inspection

1UR-FSE COOLING: RADIATOR (for 2WD): ON-VEHICLE INSPECTION

1. CHECK RADIATOR RESERVOIR 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

(6) *: Even if the cap cannot maintain the maximum pressure, it is not a defect.

Judgment criterion:





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

2. CHECK FINS FOR BLOCKAGE

(a) Check that the radiator and condenser are not blocked with leaves, dirt, or insects. Clean the hose connections.

If the fins are blocked, wash them with water or a steam cleaner.

NOTICE:
* If the distance between the steam cleaner and core is too close, the fins may be damaged.
* Keep the following injection distance.

Standard injection distance:





* If the fins are bent, straighten them with a screwdriver or pliers.
* Never apply water directly into the electric components.
(b) Dry the fins with compressed air.