Your info was right i just opened the gearbox
I'm not sure which bearing it is, but i'm pretty sure that the problem is in the gearbox. When i took the oil off there where parts of a bearring in the oil, looks like there has been a war in it
. I havent found the broken bearring yet, but i will know it soon i hope
By the way i'm from the netherlands so transporting a gearbox will be somewhat expensive i think, but thanks anyway, i will keep it in mind cause s12 parts are very rare in the netherlands.