Rear Axle Bearing Out Of Place?

[Joar]

I was about to change brake shoes when i noticed that the brake drum on the left side is almost a cm further out from the axle than the right. The backing plate is also lose and can move about a cm up and down along the axle. If i push the backing plate outwards so that the outer seals look like the other side my bearing sticks out a bit at the back (see picture)

Since I don't know how it's supposed to look i thought i might as before I take the axle to a mechanic to refit new bearings and the abs and so on... What do you think, is it the fitting that is the problem?

thank you for your help

Bast regards Joar