First select an isometric view of your choice of the part, like SW isometric, SE isometric, NE isometric, or NW isometric. Now set your ucs to "current view". Now type "Solview" into the command line, select "Ucs", then "current", choose the scale of your object and finally give the viewport a name. Now go into the layer control window and you'll see three new layers: "xxx-dim", "xxx-hid", and "xxx-vis". Give the "hid" layer a hidden linetype (or turn it off) and give the layers colors of your choice. Now type "Soldraw" into the command line and select the viewport you just made. AutoCAD will generate a 2D drawing of the viewport you just selected. Congrats!