In this picture, you can see how the screw has pushed the
bearing cap through the yoke ear on the right side. At the same time, the
left side bearing cap has been pushed out of the yoke an into the hole of the
clamp. Loosen the screw and remove the u-joint from the clamp.
Pull the left side bearing cap off of the end of the
u-joint. Although the right side bearing cap is now loose, you will not be
able to remove it right now. You will need to turn the u-joint around in
the clamp and press the u-joint back the other way. This will push the
remaining cap out of the yoke, which is the only way that the bearing caps can
be properly removed. Of course, if the caps are broken (common when a
u-joint blows, you may need to improvise a bit when taking the caps off.
Remove the remaining bearing cap. The u-joint cross can
now be removed from the yoke ears. You might want to take a few minutes
and clean things up. Check the yoke and make sure it is still in good
shape. As mentioned earlier, the ears will often times suffer damage when
the u-joint blows.
Here is something that may be new to you....or maybe you never gave it much thought....clean the garbage lubricant out of the new u-joint cross. As you can see in this picture, I am pumping new grease (I use a full synthetic) into the cross, using my needle point fitting on my grease gun. As you can clearly see, the yellow junk from the manufacturer is being pushed out the holes as the new grease displaces it. Use a paper towel as I did and just wipe everything off when you are done. Don't forget to CAREFULLY wipe out the new bearing caps and remove the manufacturer's lubricant from them as well. Once they are cleaned out, pump a couple of shots of grease into each cap and smear it around so that the bearings are fully lubricated.
Note: The newer Spicer 5-760x u-joints have specific instructions about NOT doing what I just showed in the picture. Read the manufacturer's instructions and follow them. If there are no directions as for lubrication requirements, you are pretty much on your own. Here is some information I dug up in regards to u-joint lubrication.
More U-Joint Replacement
4x4 Off-Road Homestead Firearms RC Flying