What is the best way to remove a universal joint without damaging the driveshaft?
There are various tools designed to remove u-joints without damage. Most will concentrate force between the cap and yoke, rather than pressing the yokes together. Any distortion of the yokes or bending of the shaft can ruin the driveshaft and cause considerable vibration. For more information on u-joints and driveshafts please see our Detailed Topic U-joints and Driveshafts.