Safety Information Warning! • ONLY use this tool kit for its intended purpose, removing and installing valve cores in the low and high-pressure service ports on air-conditioning systems using R134A, R22, or R1234yf refrigerant. DO NOT use it on A/C systems running on any other refrigerants. •...
Operation Selecting and Changing the Coupler 1. Refer to your vehicle’s service manual and select the right quick coupler. 2. Loosen and remove the quick coupler connection nut from the tool using a wrench if necessary. Always check that the O-ring is intact and properly installed on the tool as shown before reconnecting the coupler.
Installing a New Valve Core 1. Make sure your A/C system is turned off, the tool’s valve is closed, and the quick coupler connection nut, shaft connection nut, and shaft locking nut are fully tightened. Connect this tool to the service port if it is not already there. Loosen the lock and disconnect the rod from the tool if it is not already separated.
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