Postby disallow » Thu Feb 11, 2016 3:27 pm
you can do the 'play' test on the driveshaft, (just grab it and move it back and forth to see if there is excessive play) but you may need to unbolt it to determine if you are getting the required articulation from the u-joints.
Once you've disconnect the driveshaft, you can do a similar test on the yoke of the differential to see if there is excessive play there.