I have now talked to at workshop, who also think i is the clutch wich is broken.
Is there a step by step (including pictures) - how to change a clutch - manual somewere?
I wonder if it a job that I can do by my self or is I must have a proffesional on the job.
It's not *much* different from changing the clutch in a manual gearbox (which it is
Prior to removing the gearbox, you need to remove the Selespeed actuator (it can be done with it attached, but it is VERY tight), and the the pump (from memory), plus associated hydraulics and disconnect the sele wiring loom. There's also a speed sensor in the gearbox to unplug (near the reverse light switch, which also needs to be disconnected).
The actuator is bolted to the top of the gearbox with 3 (I think - it's been a while since I did this) thin bolts. It is also attached to the gearbox selector rod with a 'finger screw'. You'll need a new one of these - they're about 1 euro from a dealer, or less (P/N 46545861, item 11 on the picture below). This finger screw is located behind a hex plug on the outer side of the actuator, and can be tricky to get at - you might need to undo the gearbox engine mount a little.
Once it's replaced, you will need AlfaDiag to adjust the clutch rod length (http://www.alfaowner.com/Forum/alfa-...-alfadiag.html
), and don't forget to change the release bearing at the same time!
To do for the first time, it's probably more than a day's work, but less than 2!