Someone has removed the LSPV on your truck.
Load Sensing Proportioning Valve
It's not that terrible if you don't have it. It would be like all vehicles prior to 1990 that don't have it.
There are also lubricant compatibility charts that you can find online.
Check the type of each of those greases to make sure they are compatible.
Lithium grease is the most common, with polyurea being next for this type of application. These two types do not play well together. If they mix...
I see you did pack the Birfield with what appears to be a moly grease. Is there a reason you did not fill the entire knuckle with the moly rather than the light colored grease? I have not seen wheel bearing grease in that light color before, (usually it is green or red).
As the axle rotates...
Yes, that's correct.
However, I would not personally use a nutsert on a seat. My fat ass in a seat that I'm hoping stays attached to the body when I get in a collision needs to have something a bit larger than the hole it it going through and not relying on the thickness of the sheet metal...
Only choices are to grind off the head and shove it out the bottom
Drill off the head and shove it out the bottom
Drop the gas tank, weld the nut back to the bottom
None of these are short scenarios and will still need another nut underneath that will hold, so eventually going to have to drop...
Actually, I would remove the seat (now only 3 bolts and a wiring harness) then soak it in penetrating oil. Then CENTER PUNCH it and drill it out from the top side. If you have access to left-hand drill bits, it can sometimes catch and unscrew it while you drill.
Drill it out with successively...
Yes, that is the vapor canister. There should be two hoses to it.
The correct fluid (per the FSM) for the power steering on these is Dexron 3 or equivalent. It should be red. If what you have in there is brown or clear, you should flush it and replace with Dexron 3. There are a few here in...
You need to CHECK YOUR NUTS!
The bottom of the steering arm on BOTH sides. The one on the LEFT side appears to be loose.
Please torque both sides (4) nuts on each side to 71 LB-FT. (or whatever N-M that equates to.
This is VERY important!
Welcome!
Show us all the goodness you have!
You have many of the things that the USA did NOT get (but we WANT!)
Good luck and ask away. There is also a Diesel section for your Diesel Engine questions. Those mostly have to come from countries other than USA.