4. Using a pair of needle-nose pliers, remove the snap rings that hold the U-joint caps in place. Then use a punch (or even a socket extension) and a hammer to drive the U-joint downward. As the U-joint moves, it will push the U-joint cap out of the yolk assembly and into the pipe/socket support. Rotate the driveshaft 180 degrees and remove the other U-joint cap in the same way. With both caps removed, angle the U-joint slightly and remove it from the driveshaft.