I bought one of these Toyota kits last fall and just this weekend tore into the gearbox to do the whole thing. Taking it off the the car was no big deal, then I wasted 3-4 hours trying to get the pitman arm off of the gearbox. I have an impact driver that can supposedly deliver 700lbs of torque but it would not budge, no amount of heating, banging, spraying cancer causing agents and swearing caused it to budge. I was about to call it quits and take it to a mechanic that had a stronger device with more torque when I thought of one last ditch effort. I applied full torque on the pitman arm puller, left the puller on and then wailed on the pitman arm with my BFH, repeat and it came loose.
Then came the process of pulling it all apart, no problem. Mine was caked in grime on the outside and full of black sludge on the inside. No wonder I had leaks if this sludge was throughout the system.
My biggest tip so far is that in installing the last teflon seal at the bottom of the shaft, I think the hardest one by a mile, you insert half the greased rubber o-ring first to the correct position above the bearing, then you wedge the 5mm teflon seal against that seated half of the O-ring. Holding the teflon seal in this starting place pinned with one finger, start walking the black O-ring behind the rest of the white teflon, a finger at a time and holding each spot pinned so the white teflon ring doesn't squirt out. You will get to the end with 85% of the black O-ring stuffed behund the teflon and a bubble of O-ring that makes you swear the sizes are wrong. If you keep 3-4 fingers in there holding the teflon in place you can somehow push on that bubble of black Oring gently and walk it behind the teflon. Took me an hour I bet. I gave up twice and then it went together in 2 minutes when it worked. I did not stop to take a picture in the last bit because I was terrified the teflon would squirt off the O-ring one more time. I may have cried when it came together.
Bearing -> Teflon Oring combo -> Metal Washer -> Snap Ring -> Dust Seal