Radiator: Testing and Inspection

RADIATOR

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 packing 1, 2 or 3, clean the part(s) with water and finger scouring.
2. Check that 1, 2 or 3 is not deformed, cracked or swollen.
3. Check that 3 and 4 are not stuck together.
4. Apply engine coolant to 2 and 3 before using the radiator cap tester.





5. When using the cap tester, tilt it more than 30°.
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 a defect.

Judgment Criterion:

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