How would you take your Nikon D7000 apart? If you are not sure, I suggest you have a look at the following video from Thailand.
However, I would strongly suggest that you would try this only if the camera is broken and it’s already out of warranty. The Nikon D7000 is a fragile piece of hardware equipment and after rebuilding it, you may still have to correctly recalibrate most of its sub-systems (including AF).
Source: Vimon Camera Service, camera repair in Thailand.