W116 sunroof

How does it come out?
Or doesn't it need to, I've all the seals and brushstrips, in preparation for some rust to be removed around the sunroof, I want to change them all at
the same time.
If I can get it out, is there anything I should grease while its out, its never been removed in 20+ years but still works perfectly.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.