http://support.hp.com/us-en/product/HP-G60-Notebook-PC-series/3914836/model/3979132/manuals/

You may want to look for folk that opened it up on Youtube. I rarely have to "get to fan." I just get out the canned air and then instruct the owner on use then prescribe a weekly cleaning for a month then monthly (1st of the month) from then on.

How to find that Youtube?
https://www.google.com/search?q=HP+G60+445+GX&ie=utf-8&oe=utf-8#q=HP+G60+445+GX+fan+replacement&tbm=vid

Fan?
http://www.amazon.com/IPARTS-CPU-Cooling-HP-G60-445DX/dp/B00GNJBGXM