[1] To remove the fix screw which tighten “Header” and Pipe (of Air shaft).
[2] To remove the “Nipple”.
[3] To drill a hole and tapping thread on shaft head.
[4] To connect together the Header, Bush,Slider and Pull rod.
[5] To put a screw on each expansion strip then use a stationer clip to hold the Strip, keep all strip on outside of Aluminum tube.
[6] To hanging and hold the shaft vertically, then use the slider to hammer the pull rod remove the “Header” and rubber tube together.
[7] To change a new tube on “Header” and another end (of rubber tube) put into the pipe.
[8] To put back the “Header” and the holes of “Header” and pipe must be matched, thus the screw can be fixed.
[9] After completely tighten the screw then put back the Nipple, and the change job is completed.