@arturjeronimo the only thing I can offer is the SM [document|32152] which will show you step by step how to disassemble your camera. Now once you follow that manual, remember to help out the next person ;-)
While you work on your drive, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
Repair is War on Entropy!