Hi there... I'm new at this forum.
I've got myself a '91 e36 318i with manual sunroof and encountered the problem that my sunroof wouldn't close
I don't (at this point) exactly know what you mean, but in my vision it's quite simple to disassemble your sunroof-parts from the inside (if that's what you want).
What I know is that you have first have to remove the big thing that covers your seiling.the slide (I don't know how you call it in English, I'm Dutch...) Anyway, the manual thing that closes your roof and opens it.
You can unscrew the small round cap, and after that with 2 screws the big thing that covers inside.
After that you have 2 torq bolts (did I spell it right? I mean the star-shape screws..) and you take them out, but remember you remember the length. You have a shorter version and a longer one, if you but them in wrongwise you can have a small bump in your roof...
After that you see a silvercolor thing, were 2 brown colored pipes run trough. The silvercolor thing has 2 screwholes that hold your handslider to open your roof. The brown colored pipes has the cables in them that opens your roof. That's the thing I have to replace (the screwhole is completely worn out...)
The pipes go to the rearside of your roof, so you have somekind of U form around your roof.
On the end of pipes you have 2 small screws that go... I don't know... I guess in the cassette.
I hope I can help you with this... otherwise... well... just another way to spend my time
If you would I could shoot some pics...