These guys know this stuff far better than me, but from another that’s never built their own gears, look up on YouTube how to change the Pinion Seal, it captures what you’ll need to do, I attached a good one below.
The type of torque wrench they are referencing, is one that doesn’t click or buzz. You put it on the pinion nut, NOT to tighten the nut, but once you have it tight, and turn the pinion, and the gears etc. the inch pound torque wrench has a metal bar that pushed back in a measurement window, and it will show that it takes 20 inch pounds (example) to turn the nut.
Usually, you do this before, then take it off, so you can bring it back to the same inch pounds. There is a range in rhe Service Manual on this site.
I don’t know every year, but there is a seal and crush sleeve (on some, I don’t know all years )
These inch pound constant pressure torque wrenches are commonly used building firearms, was the reason I knew what these guys were talking about when I first came across this topic couple years ago on here.
The actual pinion nut, you don’t really have a Foot Pound target. You get it tight, then measure the turning inch pounds, and tighten to that spec, if that makes sense.