Always purchase a universal joint service kit for your model vehicle before beginning this procedure and read through the entire process beforehand. Start by removing the driveshaft. Place the driveshaft on a bench equipped with a vise and use a small pair of pliers to remove the snap-rings from the ends of the universal joint yokes. To remove the U-joint from the driveshaft, position a piece of pipe or a large socket with an outside diameter slightly larger than one of the bearing caps over that cap, and use a smaller socket against the opposite cap to press the bearing cap out using the vise. Once the U-joint is pressed through as far as possible, grip the bearing cap with pliers to remove it. A universal joint repair kit will contain a new U-joint, seals, bearings, caps, and snap-rings, so inspect the bearing cap bores in the yokes for wear and damage; if they are too worn, the driveshaft must be replaced. Ensure the dust seals are properly located on the U-joint, then press one bearing cap into the yoke approximately 1/4-inch using a vise. Use chassis grease to hold the needle rollers in place in the caps, insert the U-joint into the partially installed bearing cap without dislodging the needle rollers, and hold the U-joint in alignment while pressing both caps into place by carefully closing the jaws of the vise. Use a socket slightly smaller in diameter than the caps to press them into the yoke, pressing in one side, installing the snap-ring, then pressing the other side to shift the U-joint assembly tight against the installed snap-ring and install the other snap-ring. Repeat these operations for the remaining two bearing caps. If the joint has been previously rebuilt, remove the snap-rings located on the inner part of each bearing cap by tapping them off with a screwdriver and hammer; if this is the first rebuild, there won't be any snap-rings, as the pressing operation will shear the molded plastic retaining material, which may require heating the U-joint over 500-degrees to melt the plastic before pressing it apart. Press out the bearing caps, remove the U-joint, and clean all plastic material from the yoke, using a small punch to clear the injection holes. Reassembly follows the same process as for the outer snap-ring joint, with snap-rings located on the inner part of each bearing cap, pressing the bearing cap in until the snap-ring can be installed. If the joint is stiff after assembly, strike the yoke sharply with a hammer to spring the yoke ears and free up the joint.