I'm doing my first full differential rebuild using AceAndrews' instructions. I'm using e30 lsd unit which is a bit different + e21 case and e30 3,91:1 pinion and ring.
One question about instructions. Is the following really correct that the pinion should rotate easier when the nut is tightened? I can understand that the crush sleeve could do that but first you would think the opposite.
"The factory manual calls for 25ft/lbs. of rotating torque. As you tighten the Pinion Shaft Nut down you'll feel quite a bit of resistance from the crush sleeve, be sure to stop frequently to rotate the flange/pinion by hand. With every twist the pinion should spin easier. Repeat this process until you hit the 25ft/lb mark continually (that is to say the pinion doesn't loosen as you twist) the final feel is similar to putting a finger in molasses (thick but smooth). With the nut torqued down, tap in your new lock-plate (it will be tight but it will expand into the relief slot on the flange [if you don't bend it in half])."
Another question - is this conversion correct? I don't have a clue about imperial torque units.
"25 pound foot = 33.9 newton meter"
AceAndrew - Thank you for your great article! It really helps a first-timer.