The normal method of creating a 2d illustration, (printed) from a 3d cad, is to create what is known as an 'exploded view'. This moves the individual parts/components away from what would have been the assempled view.
If you have a shop floor that you can visit, you should look at the illustrations in both the servicing manual and parts manual, as both do use slightly different methods of viewing an exploded view.
You can do this, depending on how the model was constructed, and whether you can successfully import it to Photoshop.
Photoshop can open the following 3D formats: DAE (Collada), OBJ, 3DS, U3D, and KMZ (Google Earth). In practice, I've found that my colleagues using SolidWorks or Creo (Pro-E) typically can't export in one of those formats. I usually have to ask them to create the views and export a flat 2D file for me.
Here's a little more detail about file formats, import and display of 3D in Photoshop: