Radiator: Testing and Inspection

2AZ-FE 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 rubber seal 1, 2 or 3, clean the part(s) with water and scouring.
(2) Check that rubber seals 1, 2 and 3 are not deformed, cracked or swollen.
(3) Check that rubber seals 3 and 4 are not stuck together.
(4) Apply engine coolant to rubber seals 2 and 3 before using a radiator cap tester.




(5) When using the cap tester, tilt it upwards 30° or more.
(6) Pump the cap tester several times, and check the maximum pressure*1.
Pumping speed:
1 pump per second
HINT: *1: Even if the cap cannot maintain the maximum pressure, it is not defective.

Judgment Criteria:






If the maximum pressure is less than the minimum standard value, replace the radiator 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 radiator core surface.
- Use it for core perpendicularly.
- If the steam cleaner is too close to the radiator core, there is a possibility of damaging the fins, so keep 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.