Just wondered (and being a little lazy here) what size is the hub nut on the Espace III 2,2 DCi? Also, how is the drive shaft fixed to the gearbox - is it the 2 pins - one inside the other type arrangement? reason I ask is that both outer and inner bellows are showing signs of extreme wear and the is a slight excessive vibration when cold so I thought get a remanufactured driveshaft and swap the lot...
You'll need a 32mm socket to remove it if I recall correctly, its also held in with a lot of force and I speak from experience on that. Mine had to go to the garage in the end as I didn't have the tools to extract the hub nut which funny enough, isn't held in by much, but the torque required is something like 400 - 450 kN which is why it was eventually a b******d to undo.
Which end is the gaiter split? Mine split at the outer end, I.e. road wheel. If it is split at that end, you can just replace the Constant Velocity joint on the outer end instead and put a new boot on the inner end. Which works out a lot cheaper in the end.
Depending on your model, this is what I used for the drive shaft of mine:
http://www.ebay.co.uk/itm/RENAULT-ESPACE-2-2-DCi-DRIVESHAFT-CV-JOINT-BOOT-KIT-2000-06-/130851412386?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item1e775a19a2