Don't bother. If you need to ask, you are probably not competent to do the job. They aer cheap enough:
http://www.howtomendit.com/answers.php?id=385101
http://www.savemylight.co.uk/catalogsearch/result/?q=kaoyi+kft+6022
http://www.savemylight.co.uk/kaoyi-kft6022-sliding-foot-dimmer-transformer.html
http://www.diynot.com/diy/threads/replacing-a-sliding-dimmer-on-a-floor-lamp.145425/page-2
Anon, October 2016