INSPECT RESERVOIR CAP
Measure the valve opening pressure.
If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.
Check that the O-ring is not deformed, cracked or swollen.
Apply engine coolant to the O-ring and rubber packing before using a radiator cap tester.
|*a||30° or more|
|*b||Radiator Cap Tester|
When using the radiator cap tester, tilt it more than 30° degrees.
Pump the radiator cap tester several times and check the maximum pressure*.
|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 reservoir cap.
INSPECT FINS FOR BLOCKAGE
If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.
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.
Dry the fins with compressed air.