How to remove the water tank connector of Ford Carnival heater?

1. First, distinguish the two butted metal pipes on the hot-air water pipe joint, and identify the marks such as the pointer and rotary table on the quick connector of the hot-air water pipe.

2. Next, turn the dial to align the pointer with the separation mark, and then turn the dial again to align the pointer with the joint mark.

3. Finally, turn the turntable counterclockwise by hand and pull it outward at the same time to remove it.