Pressure Testing the Pressure Cap

- Tools Required
- J24460-01 Cooling System Tester

Caution: Refer to Radiator Cap Removal Caution in Service Precautions.

1. Remove the radiator cap.
2. Wet the radiator cap gasket with water. Wash off any sediment from the sealing surface.
3. Install the cap to J24460-01
4. Pump up the pressure to the pressure stamped on the cap by operating the plunger handle of J24460-01 Note the rate of decrease in pressure. The pressure reading should remain within the corresponding pressure segment of the scale for about 10 seconds.
5. If the cap does not hold the corresponding pressure, replace the cap.