With your pointer on the part, pressing Tab will hide them. And shift + tab will hide them.
Select a surface to start with, then activate the "Section View" tool (in the heads-up display)
Now, select the section arrow and drag as needed to view internals.
...additional planes or faces can be selected (up to three).
...multiple view ports can be used.
...section views can be saved for easy retrieval/reuse.
You may want to investigate "Display States" as well.
You can select outer part and make it transparent. You can select transparent part again by holding shift button and change it back to opaque when you are done.
SOLVED !!! and kinda excited about it
What I wanted was like doing a "walkthrough" accept you can't do anything other than walk through.
Here is what i did to solve the issue, basically working on things from the inside or behind something without having to use section view, isolate or transparency.
1. click on display manager "little colored ball on tab by feature manager"
2.click on view scene light and cameras
3.right click on camera, select add camera
4. your screen will split, drag split just up to your featuremanager but not to far or it will shut camera edit mode down
5.uncheck Lock camera, Change field of view to about 24mm, Change distance and height to about 1000 x 1000 and change the aspect ratio so as to make the gray bars disappear, I set mine to 1.6:1 its close but not perfect.
Click OK and no you can zoom through walls or whatever your project is and edit from inside!