Pressure Cap Testing
WARNING: This page is about a different car, the 2007 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
Tools Required
- J 24460-01 Cooling System Pressure Tester. See Special Tools .
- J 42401 Radiator Cap/Surge Tank Test Adapter. See Special Tools .
- J 46143 Intercooler Reservoir Cap Test Adapter. See Special Tools .
- Remove the pressure cap.
- Wash the pressure cap sealing surface with water.
- Use J 24460-01
(1) with one of the following attachments (2):
- J 42401 in order to test the radiator cap. See Special Tools .
- J 46143 in order to test the intercooler reservoir cap. See Special Tools .
- Test the pressure cap for the following conditions:
- Pressure the release when J 24460-01 exceeds the pressure rating of the pressure cap. See Special Tools .
- Maintain the rated pressure for at least 10 seconds.
Note the rate of pressure loss.
- Replace the pressure cap under the following conditions:
- The pressure cap does not release the pressure which exceeds the rated pressure of the cap.
- The pressure cap does not hold the rated pressure.
CAUTION:
In order to help avoid being burned, do not remove the radiator cap while the engine and the radiator are hot. Scalding fluid and steam can be blown out under pressure if the cap is removed too soon.