According to my workshop manual, a 200TDi engine does indeed have a left hand thread on this nut, but to stop the pulley rotating as you try to undo it there is supposedly a hole you can stick a bit of metal [eg: a drill bit] in to lock it up.
--> Greg
How the hell do you remove the left had thread nut on the front of the water
> pump that is holds the fan/viscous unit on??
>
> I have tried everything. Even went out and bought an inch and a half spanner
> for it instead of using an old whitworth one that sort of fitted........ >
> Still cant stop the pully turning. I dont want to put to much weight on it
> in fear of snapping the impellor off from the pump.
>
>
> What does everyone else use???? Any ingenious ideas???
>
>
> Mark
>
>