So it is broken after all?
Replacing it is very easy. You just need to unscrew everything that is in the way, which is mostly the outer shell.
Remember to take detailed pictures while you take it apart as reference on how to put it all back.
If you look above in the menu bar of this website you'll see Additional websites > Spare Parts Catalogue and you can find your vac there with a parts list and an exploded view drawing. This will give you an idea of what's inside.
Have your T25 torx screwdriver with a long handle handy.