28pc Cooling System Pressure Tester & Vacuum Purge Master Kit Universal Radiator Pressure Test Kit

1. Open the tank cover. Make sure the tank is cooled before opening the cap. 
2. Select the appropriate vehicle system water tank probe.
3. Insert the quick connector into the water tank probe.
4. Remove the hand pump set and pressurize until the gauge indicates about 15-20psi (or 1Bar).
5. Inspection pressure gauge:
● Assuming that the gauge pointer remains unchanged for several minutes, it indicates that the system is normal and can be used.
● If the pointer drops, it means that the system is cracked due to pressure damage.
● Check whether there is water leakage in each pipe of the water tank, and repair according to the location of water leakage.
● Check the condition of the rubber ring.
● Re-test to ensure that the repaired system is serviceable. 
6. After the test is completed, return to 0 from the pressure relief valve to the pressure gauge.