Tip on intermidiate shaft.
Turn steerng wheel so the bolt holding to upper shaft is pointing towards engine and the nut is facing driver side front wheel.
Use really lOng extension and go in from the wheel well.
Then take socket and wrench off, and knock the bolt out using same extensions and a hammer.
Use a phillips screw driver to reach half way into the bolt hole and pry back the ntermediate shaft back, keep at it untill it wont move anymore then use a wrench that closly fits the flat sides of the upper shaft and hammer to knock the shaft the rest of the way off the stub.
Trust me this is the simplest way to do it. As i had to mov the imtermidiate shaft out of the way to change plugs on my s10 after installing headers.
But before you seperate the shafts, straighten out your wheels and center your steering wheel. Resist th urge to spin the steering wheel once you seperate the shafts. As it breaks stuff in the column!
Now its as simple as use a 2 jaw gear puller to remove pitman arm, then remove gear box. If you dont move wheels or steeri g wheel new stuff will go in and no algnment will be needed.
If for some reason you do move them your steering wheel will simply be clOcked wrong, pull pitman arm and adjust it one tooth at a time till steering wheel is straight again.
Done a few of these, its easy.
Be sure to fill gearbox with fluid BEFORe attaching hoses, its a good idea to pour some in and rotate the input shaft by hand while its on bench to lube it up internally before i stalled and a load is on it dry. This super easy if you use pitma. Arm as lever to turn the gear box a few times.
Lol dont work with head under gear box, they are heavy and it hurts alil if it falls on ya mellon. Dont ask how i know.