Citroen dispatch 1.6 hdi 60 plate

Ok so massive shudder under load thought dual mass turns out it's solid parted box off today as several checks by others on all sorts from tyres to bushes etc all ok. Soon as you dip clutch shudder goes even when vehicle is moving so it's clutch box related. Gears all work fine. It dose it in every gear no wines nor crunches just massive shudder Any ideas ? Diff bearings ?
It sounds rattley when shaft is spun on box but so did a lot of gear boxes pug and shitron I looked at today

I might be thinking of other car but is citroens/pug inner cv joints  spring loaded?? and did car had by any chance cv gaiter or something done to it which would require removing joint hub etc?? what i've seen couple of times is that spring in inner cv joint going adrift locking inner cv joint an made it feel like engine and box was trying push to one side.... i hope this makes sense lol

Its a van not sure. Would it still not do this without excelerating ie it say you get up to 50mph its doing it soon as you dip clutch it goes

Does it drive ok? i.e get up to speed as normal. I ask as wonder when it could be a badly worn spline on a driveshaft going into a hub?

johnny gtir wrote:Its a van not sure. Would it still not do this without excelerating ie it say you get up to 50mph its doing it soon as you dip clutch it goes

Well it would do it all the time and it would be worst when turning...

Drive shafts are fine and you would think it would get worse when turning if diff but it dose not. I am stuck