Pressure Relief Cap

Pressure Relief Cap





1. Inspect the pressure relief cap and seals for damage or deterioration. Install a new pressure relief cap if necessary.





2. Fit pressure relief cap to Radiator/Heater Core Pressure Tester Kit using an appropriate adapter.





3. NOTE: If the plunger of the pressure tester is depressed too fast, an incorrect pressure reading will result.

Slowly pump the pressure tester until the pressure gauge stops increasing and note the highest pressure reading. Release pressure and repeat test. Install a new pressure relief cap if the pressure is not 99.3 - 121.4 kPa (14.4 - 17.6 psi).