Yeah, thats it. Youve got to remove both ujoints to do it, and then it will pretty much come apart in your hand. Think of the dshaft as 3 pieces- the shaft, the cardan, and a yoke. The yoke connects ujoint #1 to the cardan, and ujoint #2 connects the cardan to the shaft. The yoke passes thru the middle of the cardan, and pivots on that center ball, which is installed on a stud sticking out of the end of the shaft.
Soo.....remove both ujoints, and it will all come apart. install spring inside small machined stud on end of shaft. then install new center ball, and retaining seal. Then, IIRC
, you have to install ujoint #2 first, i always forget which one goes first.
In this pic you see a stripped shaft from the last time i did this. That stud is where the spring & center ball go. Spring goes inside the stud, ball goes over top. There is a ring, i wanna say 1/2" tall by maybe 3/32" thick, that fits over that small step (tap in place with hammer), and that is what holds the ball in place. Then you install the seal over top of that ring. I dont remember if the rebuild kit comes with the ring or not, i just reused the ring from the j-yard shaft since i lost mine when the shaft exploded.
You dont need any special tools to do the job, altho i use a balljoint tool to press ujoints in/out instead of a vice. Same principle though.
Hopefully i explained that clearly