On the live axle escort brake the bar that goes through the back plate that the cable clips onto. is that supposed to pivot?

I wanna get my brakes assembled up ready to get rid of a box in me shed.

I know obviously the adjuster does..

Probably a daft question..

it pivotsd on the rusty rivet in the middle

Yes it pivots....

and acts on one shoe to push it into contact with the drum. As this shoe touches the drum the reaction force pushes the other shoe in the opposite direction and into contact with the drum

Cheers chaps. I actually had a look at them last night and realised id been a bit of a div.