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STATIC PRESSURE TEST USING DIRECT-FIT ADAPTER ON SYSTEMS WITH A RADIATOR CAP
WARNING: MAKE SURE ADAPTER SEALS FULLY BEFORE THE COOLING SYSTEM IS PRESSURIZED.
1. After performing the radiator and cooling system visual inspection, carefully remove the radiator cap. Select
an appropriate adapter that fits the radiator fill neck. See figure 1.
2. Align the locking ears of the adapter with the notches in the radiator filler neck opening. Lightly push down.
Turn the adapter until the locking ears and adapter are secured.
3. Connect the quick-connect fitting at the end of the pump hose to the fitting on the adapter and press down.
Make sure the coupling is fully engaged.
4. Examine the vehicle's service information and radiator cap to determine the proper system pressure. Pump
the handle of the pressure tester until the needle of the gauge indicates the rated pressure of the system.
See figure 2.
5. With the system still pressurized, inspect the radiator and cooling system. Check the points where cooling
system hoses connect to the radiator and other components for signs of leakage. When complete, check the
reading on gauge and compare to the rated pressure of the system.
6. When testing is complete, release the pressure in the system by slowly turning the release valve. Take care
as a stream of coolant under pressure may exit the system through the relief hose. It may help to have a
container or rag for excess coolant to drain into.
7. Disconnect the quick-connect fitting and separate the pump and adapter. Clean and dry these components
and store them in their proper locations. Refill the radiator to its proper level and replace the radiator cap.
Figure 1
Figure 2
2
Adapter
Charge Needle
Release
Valve
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