Radiator: Testing and Inspection

2AR-FE COOLING: RADIATOR: ON-VEHICLE INSPECTION

1. INSPECT RADIATOR RESERVOIR CAP SUB-ASSEMBLY





(a) Measure the valve opening pressure.

Text in Illustration





(1) If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.

(2) Check that the O-ring is not deformed, cracked or swollen.

(3) Apply engine coolant to the O-ring and rubber packing before using a radiator cap tester.





(4) When using the cap tester, tilt it more than 30 degrees.

Text in Illustration





(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.

Standard Judgment Criterion:





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

2. INSPECT FINS FOR BLOCKAGE

(a) If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.

NOTICE:
* To avoid damaging the fins, the injection direction should be at right angles to the core surface.
* If the steam cleaner is too close to the core, there is a possibility of damaging the fins, so maintain the following injection distances.

Standard Injection Distance:





* If the fins are bent, straighten them with a screwdriver or pliers.
* Do not expose electronic components to water.

(b) Dry the fins with compressed air.