CHECK RESERVE TANK CAP
Measure the valve opening pressure.
If there are water stains or foreign matter on O-ring 1, clean it with water and finger scouring.
Check that O-ring 1 is not deformed, cracked or swollen.
Apply engine coolant to O-ring 1 and rubber packing 2 before using a radiator cap tester.
| *1 | Reserve Tank Cap |
| *2 | Radiator Cap Tester |
| *a | 30° or more |
When using the cap tester, tilt it 30° or more.
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.
| Judgment Criterion | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the reserve tank cap.