4, Loosen the disc brake:
One problem that can arise here is that the disc brake can be very rusty and difficult to remove.
First you must loosen the small 5 mm hexagon bolt.
It fixes the rotator against the holes to the wheel bolts.
Now the real problem starts, how to loosen the disc brake from the hub.
It's very much rust here that hold the parts together.
I took a knife to remove all the rust from the joint.
Still I couldn't remove the disc brake.
I had to remove the whole hub from the axis,
turned it up side down to the ground with the wheel bolts inserted and hammer on the disc brake from backside,
then it came loose.
As you see it have come a lot of dirt into the roller bearing and now I had to clean it.
It was also some water inside here from the dust cap that didn't hold it tight.