Valve core removal wrench basic operation:
1）Pull out the dead point on the stem, close the valve on the tool,adjust the joint of the tool to the air conditioning interface, and tighten the valve on the air conditioning.
2）Make sure that the tool is connected tightly to the air conditioning valve,then open the valve on the tool. Push the stem into the air conditioning valve and gently rotate the tail knob of the remover. Find the angle to connect the valve core,and then loosen it.
3）When the valve core is removed, pull out the stem, close the valve on the valve remover,loosen the screw at the end of the tool and take out the valve core. The work is done!