You can see the numbered components if you double click on 'solution'-button of the sliding pictures below. Start with the two Allen-screws (1) at the bottom. You can see that they are placed in the frame of the disc brake. With these two screws it would be connected somewhere with the suspension or the wheel bearing plate. It does of course, not move during the braking operation.
Two square cast-on parts, of which only the one on the left (2) can be seen, also belong to this frame. Of course, there is a connecting bridge (3) just above the Allen-screws. In addition, two bridges, of which again, only the left one (4) can be seen, protrude over the brake disc, which is not depicted here.
Now we come to the rubber-sealed guiding pins. The left one is the No.5. Everything shown carrying the No.6, is, because of these guiding pins, movable. Below the casing of the right hand No.6, the sole brake cylinder can be surmised. This shaft (7), which is operated by the hand brake, can in addition, also be shifted mechanically.
To keep it simple, one could say, that when operating the hand brake, the top of the lever on No.7 swings to the rear, thus pressing the piston to the rear left. Once the piston-side brake pad has contact, the housing moves to the front right until the outside pad also has contact with the disc. The pressure increases and the brake becomes effective.
The cable with a plug connection to the ABS-controller (anti-lock brake system) can be seen lying aside the bleeding option (8), all these parts belong to the movable section of the floating caliper brake. Just what the end of the hand brake cable-core looks like, can be imagined when looking at the end of the lever (10). 08/11