
I followed your links to the Dutch sister forum, which you posted under "Projects".
I do not know all the words, but when reading the text aloud (Nederlands after all is just another German dialect

I can get the meaning pretty close.
I tried the "de-rusting" method and it shows excellent results.
The dismantling of the caliper piston and cylinder is complicated, as one needs a proper tool to get the spring ring (Federring) out.
So I will wait (patiently

Thanks for your help.