pulling the drive (or at least pulling the transmission off the drive (see the stickies) is a once-a year maintenance issue. while you are inspecting the U-joints, you may want to also replace the bellows and check the PDS bearingsis their any other way to tell with out pulling off the outdrive,
Noise maybe
yes. go to the volvo section and look at the DIY stickiesYou can pull the upper gear box instead of pulliing the whole drive.