Radiator: Testing and Inspection

1NZ-FE COOLING: RADIATOR (for Hatchback): ON-VEHICLE INSPECTION

1. CHECK WATER FILLER CAP SUB-ASSEMBLY





(a) Measure the valve opening pressure.

(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean the part(s) with water and finger scouring.

(2) Check that rubber packings 1, 2 and 3 are not deformed, cracked or swollen.

(3) Check that rubber packings 3 and 4 are not stuck together.

(4) Apply engine coolant to rubber packings 2 and 3 before using the radiator cap tester.

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

(6) Pump the cap tester several times, and check the maximum pressure *1.





Pumping speed:

1 pump per second

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

Judgment criteria:





Text in Illustration





If the maximum pressure is less than the specified pressure for the minimum standard valve, replace the water filler 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 keep to the following injection distances.






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