Tools Required

J 24460-01 Cooling System Tester

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.

1. Remove the radiator cap.
2. Wet the radiator cap gasket with coolant. Wash any sediment from the sealing surface.
3. Install the cap to J 24460-01 .
4. Pump up the pressure to the value marked on the cap. Hold the pressure at that value.
5. Note the rate of pressure decrease on the indicator dial.

The pressure should remain within the corresponding pressure segment of the scale for about 10 seconds.

6. Replace the cap if it does not hold the pressure for about 10 seconds.