been having slight problems with the clutch, which is thought to be the clutch cylinder not pushing the clutch plates far enough apart, if I am replacing this do I only need to replace the part that bolts onto the top of the gearbox that actuallys puches the lever ?
just had new clutch fitted bout 6,000 miles ago
plus any ideas on bleeding the clutch cylinder once I have fitted the new one, i know the bleed nipple is under the battery tray, is it just the same as bleeding brakes ? loosen the nipple and pump the pedal ?

Sometimes you have to bleed a clutch backwards to get all the air out. Not sure if this is recommended for the Doblo. I did it on my Peugeot by using a giant syringe (my wife pinched one from work) with a piece of pipe on the end. I pushed the fluid up from the nipple on the slave cylinder. It worked really well.