jackyshaikh please pm me i have a question. Why is there an allen key slot in the end of the pulley shaft? I did not know about the puller. I basicly spun it off by putting an allan socket in it and holding the pulley while I spun the allan. I did not take it all the way off, I was able to remove the bolts behind it without doing that. Now to reinstall in my vehicle, I need the installer correct? did I do any damage?? is there a threaded hole beyond the allan slot??(deeper in the shaft) if so I imagine I can either rent the tool or make one that will work. but did I damage anything by doing this???