I finally decided to dismantle the former by visible tutorials on Youtube.
THEN I noted the number of the truck and I ordered it.
The first winding, the PS3 not prennait discs: P It was the stuff éjectage white plastic that had the move, I fiddled a bit and since it works flawless for months :)
But I highly recommend:
1 / check out the trolley number before ordering (you never know)
2 / not to touch the white stuff that is in the cover of the drive.
3 / full view several tutorials before you start! depending on the drive, make the disassembly and reassembly is not the same.
